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 $
37 * $DragonFly: src/sys/dev/serial/stl/stallion.c,v 1.12 2004/09/19 02:00:25 dillon Exp $
40 /*****************************************************************************/
45 #include "opt_compat.h"
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/malloc.h>
54 #include <sys/fcntl.h>
55 #include <bus/isa/i386/isa_device.h>
56 #include <i386/isa/ic/scd1400.h>
57 #include <i386/isa/ic/sc26198.h>
58 #include <machine/comstats.h>
61 #include <bus/pci/pcivar.h>
62 #include <bus/pci/pcireg.h>
67 /*****************************************************************************/
70 * Define the version level of the kernel - so we can compile in the
71 * appropriate bits of code. By default this will compile for a 2.1
82 /*****************************************************************************/
85 * Define different board types. At the moment I have only declared
86 * those boards that this driver supports. But I will use the standard
87 * "assigned" board numbers. In the future this driver will support
88 * some of the other Stallion boards. Currently supported boards are
89 * abbreviated as EIO = EasyIO and ECH = EasyConnection 8/32.
95 #define BRD_ECH64PCI 27
96 #define BRD_EASYIOPCI 28
99 * When using the BSD "config" stuff there is no easy way to specifiy
100 * a secondary IO address region. So it is hard wired here. Also the
101 * shared interrupt information is hard wired here...
103 static unsigned int stl_ioshared = 0x280;
104 static unsigned int stl_irqshared = 0;
106 /*****************************************************************************/
109 * Define important driver limitations.
111 #define STL_MAXBRDS 8
112 #define STL_MAXPANELS 4
113 #define STL_MAXBANKS 8
114 #define STL_PORTSPERPANEL 16
115 #define STL_PORTSPERBRD 64
118 * Define the important minor number break down bits. These have been
119 * chosen to be "compatible" with the standard sio driver minor numbers.
120 * Extra high bits are used to distinguish between boards.
122 #define STL_CALLOUTDEV 0x80
123 #define STL_CTRLLOCK 0x40
124 #define STL_CTRLINIT 0x20
125 #define STL_CTRLDEV (STL_CTRLLOCK | STL_CTRLINIT)
127 #define STL_MEMDEV 0x07000000
129 #define STL_DEFSPEED TTYDEF_SPEED
130 #define STL_DEFCFLAG (CS8 | CREAD | HUPCL)
133 * I haven't really decided (or measured) what buffer sizes give
134 * a good balance between performance and memory usage. These seem
135 * to work pretty well...
137 #define STL_RXBUFSIZE 2048
138 #define STL_TXBUFSIZE 2048
140 #define STL_TXBUFLOW (STL_TXBUFSIZE / 4)
141 #define STL_RXBUFHIGH (3 * STL_RXBUFSIZE / 4)
143 /*****************************************************************************/
146 * Define our local driver identity first. Set up stuff to deal with
147 * all the local structures required by a serial tty driver.
149 static const char stl_drvname[] = "stl";
150 static const char stl_longdrvname[] = "Stallion Multiport Serial Driver";
151 static const char stl_drvversion[] = "2.0.0";
152 static int stl_brdprobed[STL_MAXBRDS];
154 static int stl_nrbrds = 0;
155 static int stl_doingtimeout = 0;
156 static struct callout stl_poll_ch;
158 static const char __file__[] = /*__FILE__*/ "stallion.c";
161 * Define global stats structures. Not used often, and can be
162 * re-used for each stats call.
164 static combrd_t stl_brdstats;
165 static comstats_t stl_comstats;
167 /*****************************************************************************/
170 * Define a set of structures to hold all the board/panel/port info
171 * for our ports. These will be dynamically allocated as required.
175 * Define a ring queue structure for each port. This will hold the
176 * TX data waiting to be output. Characters are fed into this buffer
177 * from the line discipline (or even direct from user space!) and
178 * then fed into the UARTs during interrupts. Will use a clasic ring
179 * queue here for this. The good thing about this type of ring queue
180 * is that the head and tail pointers can be updated without interrupt
181 * protection - since "write" code only needs to change the head, and
182 * interrupt code only needs to change the tail.
192 * Port, panel and board structures to hold status info about each.
193 * The board structure contains pointers to structures for each panel
194 * connected to it, and in turn each panel structure contains pointers
195 * for each port structure for each port on that panel. Note that
196 * the port structure also contains the board and panel number that it
197 * is associated with, this makes it (fairly) easy to get back to the
198 * board/panel info for a port. Also note that the tty struct is at
199 * the top of the structure, this is important, since the code uses
200 * this fact to get the port struct pointer from the tty struct
203 typedef struct stlport {
221 unsigned int rxignoremsk;
222 unsigned int rxmarkmsk;
223 unsigned int crenable;
226 struct termios initintios;
227 struct termios initouttios;
228 struct termios lockintios;
229 struct termios lockouttios;
230 struct timeval timestamp;
235 struct callout dtr_ch;
238 typedef struct stlpanel {
245 unsigned int ackmask;
246 void (*isr)(struct stlpanel *panelp, unsigned int iobase);
248 stlport_t *ports[STL_PORTSPERPANEL];
251 typedef struct stlbrd {
261 unsigned int ioaddr1;
262 unsigned int ioaddr2;
263 unsigned int iostatus;
265 unsigned int ioctrlval;
268 void (*isr)(struct stlbrd *brdp);
269 unsigned int bnkpageaddr[STL_MAXBANKS];
270 unsigned int bnkstataddr[STL_MAXBANKS];
271 stlpanel_t *bnk2panel[STL_MAXBANKS];
272 stlpanel_t *panels[STL_MAXPANELS];
273 stlport_t *ports[STL_PORTSPERBRD];
276 static stlbrd_t *stl_brds[STL_MAXBRDS];
279 * Per board state flags. Used with the state field of the board struct.
280 * Not really much here yet!
282 #define BRD_FOUND 0x1
285 * Define the port structure state flags. These set of flags are
286 * modified at interrupt time - so setting and reseting them needs
289 #define ASY_TXLOW 0x1
290 #define ASY_RXDATA 0x2
291 #define ASY_DCDCHANGE 0x4
292 #define ASY_DTRWAIT 0x8
293 #define ASY_RTSFLOW 0x10
294 #define ASY_RTSFLOWMODE 0x20
295 #define ASY_CTSFLOWMODE 0x40
296 #define ASY_TXFLOWED 0x80
297 #define ASY_TXBUSY 0x100
298 #define ASY_TXEMPTY 0x200
300 #define ASY_ACTIVE (ASY_TXLOW | ASY_RXDATA | ASY_DCDCHANGE)
303 * Define an array of board names as printable strings. Handy for
304 * referencing boards when printing trace and stuff.
306 static char *stl_brdnames[] = {
338 /*****************************************************************************/
341 * Hardware ID bits for the EasyIO and ECH boards. These defines apply
342 * to the directly accessable io ports of these boards (not the cd1400
343 * uarts - they are in scd1400.h).
345 #define EIO_8PORTRS 0x04
346 #define EIO_4PORTRS 0x05
347 #define EIO_8PORTDI 0x00
348 #define EIO_8PORTM 0x06
350 #define EIO_IDBITMASK 0x07
352 #define EIO_BRDMASK 0xf0
355 #define ID_BRD16 0x30
357 #define EIO_INTRPEND 0x08
358 #define EIO_INTEDGE 0x00
359 #define EIO_INTLEVEL 0x08
362 #define ECH_IDBITMASK 0xe0
363 #define ECH_BRDENABLE 0x08
364 #define ECH_BRDDISABLE 0x00
365 #define ECH_INTENABLE 0x01
366 #define ECH_INTDISABLE 0x00
367 #define ECH_INTLEVEL 0x02
368 #define ECH_INTEDGE 0x00
369 #define ECH_INTRPEND 0x01
370 #define ECH_BRDRESET 0x01
372 #define ECHMC_INTENABLE 0x01
373 #define ECHMC_BRDRESET 0x02
375 #define ECH_PNLSTATUS 2
376 #define ECH_PNL16PORT 0x20
377 #define ECH_PNLIDMASK 0x07
378 #define ECH_PNLXPID 0x40
379 #define ECH_PNLINTRPEND 0x80
380 #define ECH_ADDR2MASK 0x1e0
382 #define EIO_CLK 25000000
383 #define EIO_CLK8M 20000000
384 #define ECH_CLK EIO_CLK
387 * Define the PCI vendor and device ID for Stallion PCI boards.
389 #define STL_PCINSVENDID 0x100b
390 #define STL_PCINSDEVID 0xd001
392 #define STL_PCIVENDID 0x124d
393 #define STL_PCI32DEVID 0x0000
394 #define STL_PCI64DEVID 0x0002
395 #define STL_PCIEIODEVID 0x0003
397 #define STL_PCIBADCLASS 0x0101
399 typedef struct stlpcibrd {
400 unsigned short vendid;
401 unsigned short devid;
405 static stlpcibrd_t stl_pcibrds[] = {
406 { STL_PCIVENDID, STL_PCI64DEVID, BRD_ECH64PCI },
407 { STL_PCIVENDID, STL_PCIEIODEVID, BRD_EASYIOPCI },
408 { STL_PCIVENDID, STL_PCI32DEVID, BRD_ECHPCI },
409 { STL_PCINSVENDID, STL_PCINSDEVID, BRD_ECHPCI },
412 static int stl_nrpcibrds = sizeof(stl_pcibrds) / sizeof(stlpcibrd_t);
414 /*****************************************************************************/
417 * Define the vector mapping bits for the programmable interrupt board
418 * hardware. These bits encode the interrupt for the board to use - it
419 * is software selectable (except the EIO-8M).
421 static unsigned char stl_vecmap[] = {
422 0xff, 0xff, 0xff, 0x04, 0x06, 0x05, 0xff, 0x07,
423 0xff, 0xff, 0x00, 0x02, 0x01, 0xff, 0xff, 0x03
427 * Set up enable and disable macros for the ECH boards. They require
428 * the secondary io address space to be activated and deactivated.
429 * This way all ECH boards can share their secondary io region.
430 * If this is an ECH-PCI board then also need to set the page pointer
431 * to point to the correct page.
433 #define BRDENABLE(brdnr,pagenr) \
434 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
435 outb(stl_brds[(brdnr)]->ioctrl, \
436 (stl_brds[(brdnr)]->ioctrlval | ECH_BRDENABLE));\
437 else if (stl_brds[(brdnr)]->brdtype == BRD_ECHPCI) \
438 outb(stl_brds[(brdnr)]->ioctrl, (pagenr));
440 #define BRDDISABLE(brdnr) \
441 if (stl_brds[(brdnr)]->brdtype == BRD_ECH) \
442 outb(stl_brds[(brdnr)]->ioctrl, \
443 (stl_brds[(brdnr)]->ioctrlval | ECH_BRDDISABLE));
446 * Define some spare buffer space for un-wanted received characters.
448 static char stl_unwanted[SC26198_RXFIFOSIZE];
450 /*****************************************************************************/
453 * Define macros to extract a brd and port number from a minor number.
454 * This uses the extended minor number range in the upper 2 bytes of
455 * the device number. This gives us plenty of minor numbers to play
458 #define MKDEV2BRD(m) ((minor(m) & 0x00700000) >> 20)
459 #define MKDEV2PORT(m) ((minor(m) & 0x1f) | ((minor(m) & 0x00010000) >> 11))
462 * Define some handy local macros...
465 #define MIN(a,b) (((a) <= (b)) ? (a) : (b))
468 /*****************************************************************************/
471 * Declare all those functions in this driver! First up is the set of
472 * externally visible functions.
475 static int stlprobe(struct isa_device *idp);
476 static int stlattach(struct isa_device *idp);
478 STATIC d_open_t stlopen;
479 STATIC d_close_t stlclose;
480 STATIC d_ioctl_t stlioctl;
483 * Internal function prototypes.
485 static stlport_t *stl_dev2port(dev_t dev);
486 static int stl_findfreeunit(void);
487 static int stl_rawopen(stlport_t *portp);
488 static int stl_rawclose(stlport_t *portp);
489 static void stl_flush(stlport_t *portp, int flag);
490 static int stl_param(struct tty *tp, struct termios *tiosp);
491 static void stl_start(struct tty *tp);
492 static void stl_stop(struct tty *tp, int);
493 static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp);
494 static void stl_dotimeout(void);
495 static void stl_poll(void *arg);
496 static void stl_rxprocess(stlport_t *portp);
497 static void stl_flowcontrol(stlport_t *portp, int hw, int sw);
498 static void stl_dtrwakeup(void *arg);
499 static int stl_brdinit(stlbrd_t *brdp);
500 static int stl_initeio(stlbrd_t *brdp);
501 static int stl_initech(stlbrd_t *brdp);
502 static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp);
503 static void stl_eiointr(stlbrd_t *brdp);
504 static void stl_echatintr(stlbrd_t *brdp);
505 static void stl_echmcaintr(stlbrd_t *brdp);
506 static void stl_echpciintr(stlbrd_t *brdp);
507 static void stl_echpci64intr(stlbrd_t *brdp);
508 static int stl_memioctl(dev_t dev, unsigned long cmd, caddr_t data,
509 int flag, struct thread *td);
510 static int stl_getbrdstats(caddr_t data);
511 static int stl_getportstats(stlport_t *portp, caddr_t data);
512 static int stl_clrportstats(stlport_t *portp, caddr_t data);
513 static stlport_t *stl_getport(int brdnr, int panelnr, int portnr);
514 static ointhand2_t stlintr;
517 static const char *stlpciprobe(pcici_t tag, pcidi_t type);
518 static void stlpciattach(pcici_t tag, int unit);
519 static void stlpciintr(void * arg);
523 * CD1400 uart specific handling functions.
525 static void stl_cd1400setreg(stlport_t *portp, int regnr, int value);
526 static int stl_cd1400getreg(stlport_t *portp, int regnr);
527 static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value);
528 static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp);
529 static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
530 static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp);
531 static int stl_cd1400getsignals(stlport_t *portp);
532 static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts);
533 static void stl_cd1400ccrwait(stlport_t *portp);
534 static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx);
535 static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx);
536 static void stl_cd1400disableintrs(stlport_t *portp);
537 static void stl_cd1400sendbreak(stlport_t *portp, long len);
538 static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw);
539 static int stl_cd1400datastate(stlport_t *portp);
540 static void stl_cd1400flush(stlport_t *portp, int flag);
541 static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr);
542 static void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr);
543 static void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr);
544 static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase);
545 static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase);
548 * SC26198 uart specific handling functions.
550 static void stl_sc26198setreg(stlport_t *portp, int regnr, int value);
551 static int stl_sc26198getreg(stlport_t *portp, int regnr);
552 static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value);
553 static int stl_sc26198getglobreg(stlport_t *portp, int regnr);
554 static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp);
555 static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
556 static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp);
557 static int stl_sc26198getsignals(stlport_t *portp);
558 static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts);
559 static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx);
560 static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx);
561 static void stl_sc26198disableintrs(stlport_t *portp);
562 static void stl_sc26198sendbreak(stlport_t *portp, long len);
563 static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw);
564 static int stl_sc26198datastate(stlport_t *portp);
565 static void stl_sc26198flush(stlport_t *portp, int flag);
566 static void stl_sc26198txunflow(stlport_t *portp);
567 static void stl_sc26198wait(stlport_t *portp);
568 static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase);
569 static void stl_sc26198txisr(stlport_t *port);
570 static void stl_sc26198rxisr(stlport_t *port, unsigned int iack);
571 static void stl_sc26198rxgoodchars(stlport_t *portp);
572 static void stl_sc26198rxbadchars(stlport_t *portp);
573 static void stl_sc26198otherisr(stlport_t *port, unsigned int iack);
575 /*****************************************************************************/
578 * Generic UART support structure.
580 typedef struct uart {
581 int (*panelinit)(stlbrd_t *brdp, stlpanel_t *panelp);
582 void (*portinit)(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp);
583 int (*setport)(stlport_t *portp, struct termios *tiosp);
584 int (*getsignals)(stlport_t *portp);
585 void (*setsignals)(stlport_t *portp, int dtr, int rts);
586 void (*enablerxtx)(stlport_t *portp, int rx, int tx);
587 void (*startrxtx)(stlport_t *portp, int rx, int tx);
588 void (*disableintrs)(stlport_t *portp);
589 void (*sendbreak)(stlport_t *portp, long len);
590 void (*sendflow)(stlport_t *portp, int hw, int sw);
591 void (*flush)(stlport_t *portp, int flag);
592 int (*datastate)(stlport_t *portp);
593 void (*intr)(stlpanel_t *panelp, unsigned int iobase);
597 * Define some macros to make calling these functions nice and clean.
599 #define stl_panelinit (* ((uart_t *) panelp->uartp)->panelinit)
600 #define stl_portinit (* ((uart_t *) portp->uartp)->portinit)
601 #define stl_setport (* ((uart_t *) portp->uartp)->setport)
602 #define stl_getsignals (* ((uart_t *) portp->uartp)->getsignals)
603 #define stl_setsignals (* ((uart_t *) portp->uartp)->setsignals)
604 #define stl_enablerxtx (* ((uart_t *) portp->uartp)->enablerxtx)
605 #define stl_startrxtx (* ((uart_t *) portp->uartp)->startrxtx)
606 #define stl_disableintrs (* ((uart_t *) portp->uartp)->disableintrs)
607 #define stl_sendbreak (* ((uart_t *) portp->uartp)->sendbreak)
608 #define stl_sendflow (* ((uart_t *) portp->uartp)->sendflow)
609 #define stl_uartflush (* ((uart_t *) portp->uartp)->flush)
610 #define stl_datastate (* ((uart_t *) portp->uartp)->datastate)
612 /*****************************************************************************/
615 * CD1400 UART specific data initialization.
617 static uart_t stl_cd1400uart = {
621 stl_cd1400getsignals,
622 stl_cd1400setsignals,
623 stl_cd1400enablerxtx,
625 stl_cd1400disableintrs,
634 * Define the offsets within the register bank of a cd1400 based panel.
635 * These io address offsets are common to the EasyIO board as well.
643 #define EREG_BANKSIZE 8
645 #define CD1400_CLK 25000000
646 #define CD1400_CLK8M 20000000
649 * Define the cd1400 baud rate clocks. These are used when calculating
650 * what clock and divisor to use for the required baud rate. Also
651 * define the maximum baud rate allowed, and the default base baud.
653 static int stl_cd1400clkdivs[] = {
654 CD1400_CLK0, CD1400_CLK1, CD1400_CLK2, CD1400_CLK3, CD1400_CLK4
658 * Define the maximum baud rate of the cd1400 devices.
660 #define CD1400_MAXBAUD 230400
662 /*****************************************************************************/
665 * SC26198 UART specific data initization.
667 static uart_t stl_sc26198uart = {
668 stl_sc26198panelinit,
671 stl_sc26198getsignals,
672 stl_sc26198setsignals,
673 stl_sc26198enablerxtx,
674 stl_sc26198startrxtx,
675 stl_sc26198disableintrs,
676 stl_sc26198sendbreak,
679 stl_sc26198datastate,
684 * Define the offsets within the register bank of a sc26198 based panel.
692 #define XP_BANKSIZE 4
695 * Define the sc26198 baud rate table. Offsets within the table
696 * represent the actual baud rate selector of sc26198 registers.
698 static unsigned int sc26198_baudtable[] = {
699 50, 75, 150, 200, 300, 450, 600, 900, 1200, 1800, 2400, 3600,
700 4800, 7200, 9600, 14400, 19200, 28800, 38400, 57600, 115200,
704 #define SC26198_NRBAUDS (sizeof(sc26198_baudtable) / sizeof(unsigned int))
707 * Define the maximum baud rate of the sc26198 devices.
709 #define SC26198_MAXBAUD 460800
711 /*****************************************************************************/
714 * Declare the driver isa structure.
716 struct isa_driver stldriver = {
717 stlprobe, stlattach, "stl"
720 /*****************************************************************************/
725 * Declare the driver pci structure.
727 static unsigned long stl_count;
729 static struct pci_device stlpcidriver = {
737 COMPAT_PCI_DRIVER (stlpci, stlpcidriver);
741 /*****************************************************************************/
746 * FreeBSD-2.2+ kernel linkage.
749 #define CDEV_MAJOR 72
750 static struct cdevsw stl_cdevsw = {
752 /* maj */ CDEV_MAJOR,
753 /* flags */ D_TTY | D_KQFILTER,
758 /* close */ stlclose,
760 /* write */ ttywrite,
761 /* ioctl */ stlioctl,
764 /* strategy */ nostrategy,
767 /* kqfilter */ ttykqfilter
770 static void stl_drvinit(void *unused)
774 SYSINIT(sidev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,stl_drvinit,NULL)
778 /*****************************************************************************/
781 * Probe for some type of EasyIO or EasyConnection 8/32 board at
782 * the supplied address. All we do is check if we can find the
783 * board ID for the board... (Note, PCI boards not checked here,
784 * they are done in the stlpciprobe() routine).
787 static int stlprobe(struct isa_device *idp)
792 printf("stlprobe(idp=%x): unit=%d iobase=%x\n", (int) idp,
793 idp->id_unit, idp->id_iobase);
796 if (idp->id_unit > STL_MAXBRDS)
799 status = inb(idp->id_iobase + 1);
800 if ((status & ECH_IDBITMASK) == ECH_ID) {
801 stl_brdprobed[idp->id_unit] = BRD_ECH;
805 status = inb(idp->id_iobase + 2);
806 switch (status & EIO_IDBITMASK) {
812 stl_brdprobed[idp->id_unit] = BRD_EASYIO;
821 /*****************************************************************************/
824 * Find an available internal board number (unit number). The problem
825 * is that the same unit numbers can be assigned to different boards
826 * detected during the ISA and PCI initialization phases.
829 static int stl_findfreeunit()
833 for (i = 0; (i < STL_MAXBRDS); i++)
834 if (stl_brds[i] == (stlbrd_t *) NULL)
836 return((i >= STL_MAXBRDS) ? -1 : i);
839 /*****************************************************************************/
842 * Allocate resources for and initialize the specified board.
845 static int stlattach(struct isa_device *idp)
848 int boardnr, portnr, minor_dev;
851 printf("stlattach(idp=%p): unit=%d iobase=%x\n", (void *) idp,
852 idp->id_unit, idp->id_iobase);
855 /* idp->id_ointr = stlintr; */
857 brdp = malloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO);
859 if ((brdp->brdnr = stl_findfreeunit()) < 0) {
860 printf("STALLION: too many boards found, max=%d\n",
864 if (brdp->brdnr >= stl_nrbrds)
865 stl_nrbrds = brdp->brdnr + 1;
867 brdp->unitid = idp->id_unit;
868 brdp->brdtype = stl_brdprobed[idp->id_unit];
869 brdp->ioaddr1 = idp->id_iobase;
870 brdp->ioaddr2 = stl_ioshared;
871 brdp->irq = ffs(idp->id_irq) - 1;
872 brdp->irqtype = stl_irqshared;
875 /* register devices for DEVFS */
876 boardnr = brdp->brdnr;
877 cdevsw_add(&stl_cdevsw, 31, boardnr);
878 make_dev(&stl_cdevsw, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
879 0600, "staliomem%d", boardnr);
881 for (portnr = 0, minor_dev = boardnr * 0x100000;
882 portnr < 32; portnr++, minor_dev++) {
884 make_dev(&stl_cdevsw, minor_dev,
885 UID_ROOT, GID_WHEEL, 0600,
886 "ttyE%d", portnr + (boardnr * 64));
887 make_dev(&stl_cdevsw, minor_dev + 32,
888 UID_ROOT, GID_WHEEL, 0600,
889 "ttyiE%d", portnr + (boardnr * 64));
890 make_dev(&stl_cdevsw, minor_dev + 64,
891 UID_ROOT, GID_WHEEL, 0600,
892 "ttylE%d", portnr + (boardnr * 64));
893 make_dev(&stl_cdevsw, minor_dev + 128,
894 UID_ROOT, GID_WHEEL, 0600,
895 "cue%d", portnr + (boardnr * 64));
896 make_dev(&stl_cdevsw, minor_dev + 160,
897 UID_ROOT, GID_WHEEL, 0600,
898 "cuie%d", portnr + (boardnr * 64));
899 make_dev(&stl_cdevsw, minor_dev + 192,
900 UID_ROOT, GID_WHEEL, 0600,
901 "cule%d", portnr + (boardnr * 64));
904 make_dev(&stl_cdevsw, minor_dev + 0x10000,
905 UID_ROOT, GID_WHEEL, 0600,
906 "ttyE%d", portnr + (boardnr * 64) + 32);
907 make_dev(&stl_cdevsw, minor_dev + 32 + 0x10000,
908 UID_ROOT, GID_WHEEL, 0600,
909 "ttyiE%d", portnr + (boardnr * 64) + 32);
910 make_dev(&stl_cdevsw, minor_dev + 64 + 0x10000,
911 UID_ROOT, GID_WHEEL, 0600,
912 "ttylE%d", portnr + (boardnr * 64) + 32);
913 make_dev(&stl_cdevsw, minor_dev + 128 + 0x10000,
914 UID_ROOT, GID_WHEEL, 0600,
915 "cue%d", portnr + (boardnr * 64) + 32);
916 make_dev(&stl_cdevsw, minor_dev + 160 + 0x10000,
917 UID_ROOT, GID_WHEEL, 0600,
918 "cuie%d", portnr + (boardnr * 64) + 32);
919 make_dev(&stl_cdevsw, minor_dev + 192 + 0x10000,
920 UID_ROOT, GID_WHEEL, 0600,
921 "cule%d", portnr + (boardnr * 64) + 32);
923 boardnr = brdp->brdnr;
924 make_dev(&stl_cdevsw, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
925 0600, "staliomem%d", boardnr);
927 for (portnr = 0, minor_dev = boardnr * 0x100000;
928 portnr < 32; portnr++, minor_dev++) {
930 make_dev(&stl_cdevsw, minor_dev,
931 UID_ROOT, GID_WHEEL, 0600,
932 "ttyE%d", portnr + (boardnr * 64));
933 make_dev(&stl_cdevsw, minor_dev + 32,
934 UID_ROOT, GID_WHEEL, 0600,
935 "ttyiE%d", portnr + (boardnr * 64));
936 make_dev(&stl_cdevsw, minor_dev + 64,
937 UID_ROOT, GID_WHEEL, 0600,
938 "ttylE%d", portnr + (boardnr * 64));
939 make_dev(&stl_cdevsw, minor_dev + 128,
940 UID_ROOT, GID_WHEEL, 0600,
941 "cue%d", portnr + (boardnr * 64));
942 make_dev(&stl_cdevsw, minor_dev + 160,
943 UID_ROOT, GID_WHEEL, 0600,
944 "cuie%d", portnr + (boardnr * 64));
945 make_dev(&stl_cdevsw, minor_dev + 192,
946 UID_ROOT, GID_WHEEL, 0600,
947 "cule%d", portnr + (boardnr * 64));
950 make_dev(&stl_cdevsw, minor_dev + 0x10000,
951 UID_ROOT, GID_WHEEL, 0600,
952 "ttyE%d", portnr + (boardnr * 64) + 32);
953 make_dev(&stl_cdevsw, minor_dev + 32 + 0x10000,
954 UID_ROOT, GID_WHEEL, 0600,
955 "ttyiE%d", portnr + (boardnr * 64) + 32);
956 make_dev(&stl_cdevsw, minor_dev + 64 + 0x10000,
957 UID_ROOT, GID_WHEEL, 0600,
958 "ttylE%d", portnr + (boardnr * 64) + 32);
959 make_dev(&stl_cdevsw, minor_dev + 128 + 0x10000,
960 UID_ROOT, GID_WHEEL, 0600,
961 "cue%d", portnr + (boardnr * 64) + 32);
962 make_dev(&stl_cdevsw, minor_dev + 160 + 0x10000,
963 UID_ROOT, GID_WHEEL, 0600,
964 "cuie%d", portnr + (boardnr * 64) + 32);
965 make_dev(&stl_cdevsw, minor_dev + 192 + 0x10000,
966 UID_ROOT, GID_WHEEL, 0600,
967 "cule%d", portnr + (boardnr * 64) + 32);
973 /*****************************************************************************/
978 * Probe specifically for the PCI boards. We need to be a little
979 * carefull here, since it looks sort like a Nat Semi IDE chip...
982 static const char *stlpciprobe(pcici_t tag, pcidi_t type)
988 printf("stlpciprobe(tag=%x,type=%x)\n", (int) &tag, (int) type);
992 for (i = 0; (i < stl_nrpcibrds); i++) {
993 if (((type & 0xffff) == stl_pcibrds[i].vendid) &&
994 (((type >> 16) & 0xffff) == stl_pcibrds[i].devid)) {
995 brdtype = stl_pcibrds[i].brdtype;
1001 return((char *) NULL);
1003 class = pci_conf_read(tag, PCI_CLASS_REG);
1004 if ((class & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE)
1005 return((char *) NULL);
1007 return(stl_brdnames[brdtype]);
1010 /*****************************************************************************/
1013 * Allocate resources for and initialize the specified PCI board.
1016 void stlpciattach(pcici_t tag, int unit)
1019 unsigned int bar[4];
1022 int boardnr, portnr, minor_dev;
1025 printf("stlpciattach(tag=%x,unit=%x)\n", (int) &tag, unit);
1028 brdp = malloc(sizeof(stlbrd_t), M_TTYS, M_WAITOK | M_ZERO);
1030 if ((unit < 0) || (unit > STL_MAXBRDS)) {
1031 printf("STALLION: bad PCI board unit number=%d\n", unit);
1036 * Allocate us a new driver unique unit number.
1038 if ((brdp->brdnr = stl_findfreeunit()) < 0) {
1039 printf("STALLION: too many boards found, max=%d\n",
1043 if (brdp->brdnr >= stl_nrbrds)
1044 stl_nrbrds = brdp->brdnr + 1;
1047 * Determine what type of PCI board this is...
1049 id = (unsigned int) pci_conf_read(tag, 0x0);
1050 for (i = 0; (i < stl_nrpcibrds); i++) {
1051 if (((id & 0xffff) == stl_pcibrds[i].vendid) &&
1052 (((id >> 16) & 0xffff) == stl_pcibrds[i].devid)) {
1053 brdp->brdtype = stl_pcibrds[i].brdtype;
1058 if (i >= stl_nrpcibrds) {
1059 printf("STALLION: probed PCI board unknown type=%x\n", id);
1063 for (i = 0; (i < 4); i++)
1064 bar[i] = (unsigned int) pci_conf_read(tag, 0x10 + (i * 4)) &
1067 switch (brdp->brdtype) {
1069 brdp->ioaddr1 = bar[1];
1070 brdp->ioaddr2 = bar[2];
1073 brdp->ioaddr1 = bar[2];
1074 brdp->ioaddr2 = bar[1];
1077 brdp->ioaddr1 = bar[1];
1078 brdp->ioaddr2 = bar[0];
1081 printf("STALLION: unknown PCI board type=%d\n", brdp->brdtype);
1086 brdp->unitid = brdp->brdnr; /* PCI units auto-assigned */
1087 brdp->irq = ((int) pci_conf_read(tag, 0x3c)) & 0xff;
1089 if (pci_map_int(tag, stlpciintr, (void *) NULL, &tty_imask) == 0) {
1090 printf("STALLION: failed to map interrupt irq=%d for unit=%d\n",
1091 brdp->irq, brdp->brdnr);
1097 /* register devices for DEVFS */
1098 boardnr = brdp->brdnr;
1099 make_dev(&stl_cdevsw, boardnr + 0x1000000, UID_ROOT, GID_WHEEL,
1100 0600, "staliomem%d", boardnr);
1102 for (portnr = 0, minor_dev = boardnr * 0x100000;
1103 portnr < 32; portnr++, minor_dev++) {
1105 make_dev(&stl_cdevsw, minor_dev,
1106 UID_ROOT, GID_WHEEL, 0600,
1107 "ttyE%d", portnr + (boardnr * 64));
1108 make_dev(&stl_cdevsw, minor_dev + 32,
1109 UID_ROOT, GID_WHEEL, 0600,
1110 "ttyiE%d", portnr + (boardnr * 64));
1111 make_dev(&stl_cdevsw, minor_dev + 64,
1112 UID_ROOT, GID_WHEEL, 0600,
1113 "ttylE%d", portnr + (boardnr * 64));
1114 make_dev(&stl_cdevsw, minor_dev + 128,
1115 UID_ROOT, GID_WHEEL, 0600,
1116 "cue%d", portnr + (boardnr * 64));
1117 make_dev(&stl_cdevsw, minor_dev + 160,
1118 UID_ROOT, GID_WHEEL, 0600,
1119 "cuie%d", portnr + (boardnr * 64));
1120 make_dev(&stl_cdevsw, minor_dev + 192,
1121 UID_ROOT, GID_WHEEL, 0600,
1122 "cule%d", portnr + (boardnr * 64));
1125 make_dev(&stl_cdevsw, minor_dev + 0x10000,
1126 UID_ROOT, GID_WHEEL, 0600,
1127 "ttyE%d", portnr + (boardnr * 64) + 32);
1128 make_dev(&stl_cdevsw, minor_dev + 32 + 0x10000,
1129 UID_ROOT, GID_WHEEL, 0600,
1130 "ttyiE%d", portnr + (boardnr * 64) + 32);
1131 make_dev(&stl_cdevsw, minor_dev + 64 + 0x10000,
1132 UID_ROOT, GID_WHEEL, 0600,
1133 "ttylE%d", portnr + (boardnr * 64) + 32);
1134 make_dev(&stl_cdevsw, minor_dev + 128 + 0x10000,
1135 UID_ROOT, GID_WHEEL, 0600,
1136 "cue%d", portnr + (boardnr * 64) + 32);
1137 make_dev(&stl_cdevsw, minor_dev + 160 + 0x10000,
1138 UID_ROOT, GID_WHEEL, 0600,
1139 "cuie%d", portnr + (boardnr * 64) + 32);
1140 make_dev(&stl_cdevsw, minor_dev + 192 + 0x10000,
1141 UID_ROOT, GID_WHEEL, 0600,
1142 "cule%d", portnr + (boardnr * 64) + 32);
1148 /*****************************************************************************/
1150 STATIC int stlopen(dev_t dev, int flag, int mode, struct thread *td)
1154 int error, callout, x;
1157 printf("stlopen(dev=%x,flag=%x,mode=%x,p=%x)\n", (int) dev, flag,
1162 * Firstly check if the supplied device number is a valid device.
1164 if (minor(dev) & STL_MEMDEV)
1167 portp = stl_dev2port(dev);
1168 if (portp == (stlport_t *) NULL)
1170 if (minor(dev) & STL_CTRLDEV)
1174 callout = minor(dev) & STL_CALLOUTDEV;
1181 * Wait here for the DTR drop timeout period to expire.
1183 while (portp->state & ASY_DTRWAIT) {
1184 error = tsleep(&portp->dtrwait, PCATCH, "stldtr", 0);
1190 * We have a valid device, so now we check if it is already open.
1191 * If not then initialize the port hardware and set up the tty
1192 * struct as required.
1194 if ((tp->t_state & TS_ISOPEN) == 0) {
1195 tp->t_oproc = stl_start;
1196 tp->t_stop = stl_stop;
1197 tp->t_param = stl_param;
1199 tp->t_termios = callout ? portp->initouttios :
1203 if ((portp->sigs & TIOCM_CD) || callout)
1204 (*linesw[tp->t_line].l_modem)(tp, 1);
1207 if (portp->callout == 0) {
1212 if (portp->callout != 0) {
1213 if (flag & O_NONBLOCK) {
1217 error = tsleep(&portp->callout,
1218 PCATCH, "stlcall", 0);
1221 goto stlopen_restart;
1224 if ((tp->t_state & TS_XCLUDE) && suser(td)) {
1231 * If this port is not the callout device and we do not have carrier
1232 * then we need to sleep, waiting for it to be asserted.
1234 if (((tp->t_state & TS_CARR_ON) == 0) && !callout &&
1235 ((tp->t_cflag & CLOCAL) == 0) &&
1236 ((flag & O_NONBLOCK) == 0)) {
1238 error = tsleep(TSA_CARR_ON(tp), PCATCH, "stldcd", 0);
1242 goto stlopen_restart;
1246 * Open the line discipline.
1248 error = (*linesw[tp->t_line].l_open)(dev, tp);
1249 stl_ttyoptim(portp, &tp->t_termios);
1250 if ((tp->t_state & TS_ISOPEN) && callout)
1254 * If for any reason we get to here and the port is not actually
1255 * open then close of the physical hardware - no point leaving it
1256 * active when the open failed...
1260 if (((tp->t_state & TS_ISOPEN) == 0) && (portp->waitopens == 0))
1261 stl_rawclose(portp);
1266 /*****************************************************************************/
1268 STATIC int stlclose(dev_t dev, int flag, int mode, struct thread *td)
1275 printf("stlclose(dev=%s,flag=%x,mode=%x,p=%p)\n", devtoname(dev),
1276 flag, mode, (void *) p);
1279 if (minor(dev) & STL_MEMDEV)
1281 if (minor(dev) & STL_CTRLDEV)
1284 portp = stl_dev2port(dev);
1285 if (portp == (stlport_t *) NULL)
1290 (*linesw[tp->t_line].l_close)(tp, flag);
1291 stl_ttyoptim(portp, &tp->t_termios);
1292 stl_rawclose(portp);
1298 /*****************************************************************************/
1302 STATIC void stl_stop(struct tty *tp, int rw)
1305 printf("stl_stop(tp=%x,rw=%x)\n", (int) tp, rw);
1308 stl_flush((stlport_t *) tp, rw);
1313 STATIC int stlstop(struct tty *tp, int rw)
1316 printf("stlstop(tp=%x,rw=%x)\n", (int) tp, rw);
1319 stl_flush((stlport_t *) tp, rw);
1325 /*****************************************************************************/
1327 STATIC int stlioctl(dev_t dev, unsigned long cmd, caddr_t data, int flag,
1330 struct termios *newtios, *localtios;
1336 printf("stlioctl(dev=%s,cmd=%lx,data=%p,flag=%x,p=%p)\n",
1337 devtoname(dev), cmd, (void *) data, flag, (void *) p);
1340 if (minor(dev) & STL_MEMDEV)
1341 return(stl_memioctl(dev, cmd, data, flag, td));
1343 portp = stl_dev2port(dev);
1344 if (portp == (stlport_t *) NULL)
1350 * First up handle ioctls on the control devices.
1352 if (minor(dev) & STL_CTRLDEV) {
1353 if ((minor(dev) & STL_CTRLDEV) == STL_CTRLINIT)
1354 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1355 &portp->initouttios : &portp->initintios;
1356 else if ((minor(dev) & STL_CTRLDEV) == STL_CTRLLOCK)
1357 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1358 &portp->lockouttios : &portp->lockintios;
1364 if ((error = suser(td)) == 0)
1365 *localtios = *((struct termios *) data);
1368 *((struct termios *) data) = *localtios;
1371 *((int *) data) = TTYDISC;
1374 bzero(data, sizeof(struct winsize));
1384 * Deal with 4.3 compatibility issues if we have too...
1386 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
1388 struct termios tios;
1389 unsigned long oldcmd;
1391 tios = tp->t_termios;
1393 if ((error = ttsetcompat(tp, &cmd, data, &tios)))
1396 data = (caddr_t) &tios;
1401 * Carry out some pre-cmd processing work first...
1402 * Hmmm, not so sure we want this, disable for now...
1404 if ((cmd == TIOCSETA) || (cmd == TIOCSETAW) || (cmd == TIOCSETAF)) {
1405 newtios = (struct termios *) data;
1406 localtios = (minor(dev) & STL_CALLOUTDEV) ?
1407 &portp->lockouttios : &portp->lockintios;
1409 newtios->c_iflag = (tp->t_iflag & localtios->c_iflag) |
1410 (newtios->c_iflag & ~localtios->c_iflag);
1411 newtios->c_oflag = (tp->t_oflag & localtios->c_oflag) |
1412 (newtios->c_oflag & ~localtios->c_oflag);
1413 newtios->c_cflag = (tp->t_cflag & localtios->c_cflag) |
1414 (newtios->c_cflag & ~localtios->c_cflag);
1415 newtios->c_lflag = (tp->t_lflag & localtios->c_lflag) |
1416 (newtios->c_lflag & ~localtios->c_lflag);
1417 for (i = 0; (i < NCCS); i++) {
1418 if (localtios->c_cc[i] != 0)
1419 newtios->c_cc[i] = tp->t_cc[i];
1421 if (localtios->c_ispeed != 0)
1422 newtios->c_ispeed = tp->t_ispeed;
1423 if (localtios->c_ospeed != 0)
1424 newtios->c_ospeed = tp->t_ospeed;
1428 * Call the line discipline and the common command processing to
1429 * process this command (if they can).
1431 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1432 if (error != ENOIOCTL)
1436 error = ttioctl(tp, cmd, data, flag);
1437 stl_ttyoptim(portp, &tp->t_termios);
1438 if (error != ENOIOCTL) {
1446 * Process local commands here. These are all commands that only we
1447 * can take care of (they all rely on actually doing something special
1448 * to the actual hardware).
1452 stl_sendbreak(portp, -1);
1455 stl_sendbreak(portp, -2);
1458 stl_setsignals(portp, 1, -1);
1461 stl_setsignals(portp, 0, -1);
1464 i = *((int *) data);
1465 stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : 0),
1466 ((i & TIOCM_RTS) ? 1 : 0));
1469 i = *((int *) data);
1470 stl_setsignals(portp, ((i & TIOCM_DTR) ? 1 : -1),
1471 ((i & TIOCM_RTS) ? 1 : -1));
1474 i = *((int *) data);
1475 stl_setsignals(portp, ((i & TIOCM_DTR) ? 0 : -1),
1476 ((i & TIOCM_RTS) ? 0 : -1));
1479 *((int *) data) = (stl_getsignals(portp) | TIOCM_LE);
1482 if ((error = suser(td)) == 0)
1483 portp->dtrwait = *((int *) data) * hz / 100;
1486 *((int *) data) = portp->dtrwait * 100 / hz;
1489 portp->dotimestamp = 1;
1490 *((struct timeval *) data) = portp->timestamp;
1500 /*****************************************************************************/
1503 * Convert the specified minor device number into a port struct
1504 * pointer. Return NULL if the device number is not a valid port.
1507 STATIC stlport_t *stl_dev2port(dev_t dev)
1511 brdp = stl_brds[MKDEV2BRD(dev)];
1512 if (brdp == (stlbrd_t *) NULL)
1513 return((stlport_t *) NULL);
1514 return(brdp->ports[MKDEV2PORT(dev)]);
1517 /*****************************************************************************/
1520 * Initialize the port hardware. This involves enabling the transmitter
1521 * and receiver, setting the port configuration, and setting the initial
1525 static int stl_rawopen(stlport_t *portp)
1528 printf("stl_rawopen(portp=%p): brdnr=%d panelnr=%d portnr=%d\n",
1529 (void *) portp, portp->brdnr, portp->panelnr, portp->portnr);
1532 stl_setport(portp, &portp->tty.t_termios);
1533 portp->sigs = stl_getsignals(portp);
1534 stl_setsignals(portp, 1, 1);
1535 stl_enablerxtx(portp, 1, 1);
1536 stl_startrxtx(portp, 1, 0);
1540 /*****************************************************************************/
1543 * Shutdown the hardware of a port. Disable its transmitter and
1544 * receiver, and maybe drop signals if appropriate.
1547 static int stl_rawclose(stlport_t *portp)
1552 printf("stl_rawclose(portp=%p): brdnr=%d panelnr=%d portnr=%d\n",
1553 (void *) portp, portp->brdnr, portp->panelnr, portp->portnr);
1557 stl_disableintrs(portp);
1558 stl_enablerxtx(portp, 0, 0);
1559 stl_flush(portp, (FWRITE | FREAD));
1560 if (tp->t_cflag & HUPCL) {
1561 stl_setsignals(portp, 0, 0);
1562 if (portp->dtrwait != 0) {
1563 portp->state |= ASY_DTRWAIT;
1564 callout_reset(&portp->dtr_ch, portp->dtrwait,
1565 stl_dtrwakeup, portp);
1570 portp->state &= ~(ASY_ACTIVE | ASY_RTSFLOW);
1571 wakeup(&portp->callout);
1572 wakeup(TSA_CARR_ON(tp));
1576 /*****************************************************************************/
1579 * Clear the DTR waiting flag, and wake up any sleepers waiting for
1580 * DTR wait period to finish.
1583 static void stl_dtrwakeup(void *arg)
1587 portp = (stlport_t *) arg;
1588 portp->state &= ~ASY_DTRWAIT;
1589 wakeup(&portp->dtrwait);
1592 /*****************************************************************************/
1595 * Start (or continue) the transfer of TX data on this port. If the
1596 * port is not currently busy then load up the interrupt ring queue
1597 * buffer and kick of the transmitter. If the port is running low on
1598 * TX data then refill the ring queue. This routine is also used to
1599 * activate input flow control!
1602 static void stl_start(struct tty *tp)
1605 unsigned int len, stlen;
1609 portp = (stlport_t *) tp;
1612 printf("stl_start(tp=%x): brdnr=%d portnr=%d\n", (int) tp,
1613 portp->brdnr, portp->portnr);
1619 * Check if the ports input has been blocked, and take appropriate action.
1620 * Not very often do we really need to do anything, so make it quick.
1622 if (tp->t_state & TS_TBLOCK) {
1623 if ((portp->state & ASY_RTSFLOWMODE) &&
1624 ((portp->state & ASY_RTSFLOW) == 0))
1625 stl_flowcontrol(portp, 0, -1);
1627 if (portp->state & ASY_RTSFLOW)
1628 stl_flowcontrol(portp, 1, -1);
1633 * Check if the output cooked clist buffers are near empty, wake up
1634 * the line discipline to fill it up.
1636 if (tp->t_outq.c_cc <= tp->t_lowat) {
1637 if (tp->t_state & TS_ASLEEP) {
1638 tp->t_state &= ~TS_ASLEEP;
1639 wakeup(&tp->t_outq);
1641 selwakeup(&tp->t_wsel);
1645 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
1651 * Copy data from the clists into the interrupt ring queue. This will
1652 * require at most 2 copys... What we do is calculate how many chars
1653 * can fit into the ring queue, and how many can fit in 1 copy. If after
1654 * the first copy there is still more room then do the second copy.
1655 * The beauty of this type of ring queue is that we do not need to
1656 * spl protect our-selves, since we only ever update the head pointer,
1657 * and the interrupt routine only ever updates the tail pointer.
1659 if (tp->t_outq.c_cc != 0) {
1660 head = portp->tx.head;
1661 tail = portp->tx.tail;
1663 len = STL_TXBUFSIZE - (head - tail) - 1;
1664 stlen = portp->tx.endbuf - head;
1666 len = tail - head - 1;
1671 stlen = MIN(len, stlen);
1672 count = q_to_b(&tp->t_outq, head, stlen);
1675 if (head >= portp->tx.endbuf) {
1676 head = portp->tx.buf;
1678 stlen = q_to_b(&tp->t_outq, head, len);
1683 portp->tx.head = head;
1685 stl_startrxtx(portp, -1, 1);
1689 * If we sent something, make sure we are called again.
1691 tp->t_state |= TS_BUSY;
1696 * Do any writer wakeups.
1704 /*****************************************************************************/
1706 static void stl_flush(stlport_t *portp, int flag)
1712 printf("stl_flush(portp=%x,flag=%x)\n", (int) portp, flag);
1715 if (portp == (stlport_t *) NULL)
1720 if (flag & FWRITE) {
1721 stl_uartflush(portp, FWRITE);
1722 portp->tx.tail = portp->tx.head;
1726 * The only thing to watch out for when flushing the read side is
1727 * the RX status buffer. The interrupt code relys on the status
1728 * bytes as being zeroed all the time (it does not bother setting
1729 * a good char status to 0, it expects that it already will be).
1730 * We also need to un-flow the RX channel if flow control was
1734 head = portp->rx.head;
1735 tail = portp->rx.tail;
1740 len = portp->rx.endbuf - tail;
1741 bzero(portp->rxstatus.buf,
1742 (head - portp->rx.buf));
1744 bzero((tail + STL_RXBUFSIZE), len);
1745 portp->rx.tail = head;
1748 if ((portp->state & ASY_RTSFLOW) &&
1749 ((portp->tty.t_state & TS_TBLOCK) == 0))
1750 stl_flowcontrol(portp, 1, -1);
1756 /*****************************************************************************/
1759 * Interrupt handler for host based boards. Interrupts for all boards
1760 * are vectored through here.
1763 void stlintr(int unit)
1769 printf("stlintr(unit=%d)\n", unit);
1772 for (i = 0; (i < stl_nrbrds); i++) {
1773 if ((brdp = stl_brds[i]) == (stlbrd_t *) NULL)
1775 if (brdp->state == 0)
1777 (* brdp->isr)(brdp);
1781 /*****************************************************************************/
1785 static void stlpciintr(void *arg)
1792 /*****************************************************************************/
1795 * Interrupt service routine for EasyIO boards.
1798 static void stl_eiointr(stlbrd_t *brdp)
1804 printf("stl_eiointr(brdp=%p)\n", brdp);
1807 panelp = (stlpanel_t *) brdp->panels[0];
1808 iobase = panelp->iobase;
1809 while (inb(brdp->iostatus) & EIO_INTRPEND)
1810 (* panelp->isr)(panelp, iobase);
1814 * Interrupt service routine for ECH-AT board types.
1817 static void stl_echatintr(stlbrd_t *brdp)
1820 unsigned int ioaddr;
1823 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE));
1825 while (inb(brdp->iostatus) & ECH_INTRPEND) {
1826 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1827 ioaddr = brdp->bnkstataddr[bnknr];
1828 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1829 panelp = brdp->bnk2panel[bnknr];
1830 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1835 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE));
1838 /*****************************************************************************/
1841 * Interrupt service routine for ECH-MCA board types.
1844 static void stl_echmcaintr(stlbrd_t *brdp)
1847 unsigned int ioaddr;
1850 while (inb(brdp->iostatus) & ECH_INTRPEND) {
1851 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1852 ioaddr = brdp->bnkstataddr[bnknr];
1853 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1854 panelp = brdp->bnk2panel[bnknr];
1855 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1861 /*****************************************************************************/
1864 * Interrupt service routine for ECH-PCI board types.
1867 static void stl_echpciintr(stlbrd_t *brdp)
1870 unsigned int ioaddr;
1874 printf("stl_echpciintr(brdp=%x)\n", (int) brdp);
1879 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1880 outb(brdp->ioctrl, brdp->bnkpageaddr[bnknr]);
1881 ioaddr = brdp->bnkstataddr[bnknr];
1882 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1883 panelp = brdp->bnk2panel[bnknr];
1884 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1893 /*****************************************************************************/
1896 * Interrupt service routine for EC8/64-PCI board types.
1899 static void stl_echpci64intr(stlbrd_t *brdp)
1902 unsigned int ioaddr;
1906 printf("stl_echpci64intr(brdp=%p)\n", brdp);
1909 while (inb(brdp->ioctrl) & 0x1) {
1910 for (bnknr = 0; (bnknr < brdp->nrbnks); bnknr++) {
1911 ioaddr = brdp->bnkstataddr[bnknr];
1913 printf(" --> ioaddr=%x status=%x(%x)\n", ioaddr, inb(ioaddr) & ECH_PNLINTRPEND, inb(ioaddr));
1915 if (inb(ioaddr) & ECH_PNLINTRPEND) {
1916 panelp = brdp->bnk2panel[bnknr];
1917 (* panelp->isr)(panelp, (ioaddr & 0xfffc));
1923 /*****************************************************************************/
1926 * If we haven't scheduled a timeout then do it, some port needs high
1930 static void stl_dotimeout()
1933 printf("stl_dotimeout()\n");
1935 if (stl_doingtimeout == 0) {
1936 if ((stl_poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
1937 callout_init(&stl_poll_ch);
1938 callout_reset(&stl_poll_ch, 1, stl_poll, NULL);
1943 /*****************************************************************************/
1946 * Service "software" level processing. Too slow or painfull to be done
1947 * at real hardware interrupt time. This way we might also be able to
1948 * do some service on other waiting ports as well...
1951 static void stl_poll(void *arg)
1956 int brdnr, portnr, rearm, x;
1959 printf("stl_poll()\n");
1962 stl_doingtimeout = 0;
1966 for (brdnr = 0; (brdnr < stl_nrbrds); brdnr++) {
1967 if ((brdp = stl_brds[brdnr]) == (stlbrd_t *) NULL)
1969 for (portnr = 0; (portnr < brdp->nrports); portnr++) {
1970 if ((portp = brdp->ports[portnr]) == (stlport_t *) NULL)
1972 if ((portp->state & ASY_ACTIVE) == 0)
1976 if (portp->state & ASY_RXDATA)
1977 stl_rxprocess(portp);
1978 if (portp->state & ASY_DCDCHANGE) {
1979 portp->state &= ~ASY_DCDCHANGE;
1980 portp->sigs = stl_getsignals(portp);
1981 (*linesw[tp->t_line].l_modem)(tp,
1982 (portp->sigs & TIOCM_CD));
1984 if (portp->state & ASY_TXEMPTY) {
1985 if (stl_datastate(portp) == 0) {
1986 portp->state &= ~ASY_TXEMPTY;
1987 tp->t_state &= ~TS_BUSY;
1988 (*linesw[tp->t_line].l_start)(tp);
1991 if (portp->state & ASY_TXLOW) {
1992 portp->state &= ~ASY_TXLOW;
1993 (*linesw[tp->t_line].l_start)(tp);
1996 if (portp->state & ASY_ACTIVE)
2006 /*****************************************************************************/
2009 * Process the RX data that has been buffered up in the RX ring queue.
2012 static void stl_rxprocess(stlport_t *portp)
2015 unsigned int len, stlen, lostlen;
2021 printf("stl_rxprocess(portp=%x): brdnr=%d portnr=%d\n", (int) portp,
2022 portp->brdnr, portp->portnr);
2026 portp->state &= ~ASY_RXDATA;
2028 if ((tp->t_state & TS_ISOPEN) == 0) {
2029 stl_flush(portp, FREAD);
2034 * Calculate the amount of data in the RX ring queue. Also calculate
2035 * the largest single copy size...
2037 head = portp->rx.head;
2038 tail = portp->rx.tail;
2043 len = STL_RXBUFSIZE - (tail - head);
2044 stlen = portp->rx.endbuf - tail;
2047 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
2049 if (((tp->t_rawq.c_cc + len) >= TTYHOG) &&
2050 ((portp->state & ASY_RTSFLOWMODE) ||
2051 (tp->t_iflag & IXOFF)) &&
2052 ((tp->t_state & TS_TBLOCK) == 0)) {
2053 ch = TTYHOG - tp->t_rawq.c_cc - 1;
2054 len = (ch > 0) ? ch : 0;
2055 stlen = MIN(stlen, len);
2058 lostlen = b_to_q(tail, stlen, &tp->t_rawq);
2061 if (tail >= portp->rx.endbuf) {
2062 tail = portp->rx.buf;
2063 lostlen += b_to_q(tail, len, &tp->t_rawq);
2066 portp->stats.rxlost += lostlen;
2068 portp->rx.tail = tail;
2071 while (portp->rx.tail != head) {
2072 ch = (unsigned char) *(portp->rx.tail);
2073 status = *(portp->rx.tail + STL_RXBUFSIZE);
2075 *(portp->rx.tail + STL_RXBUFSIZE) = 0;
2076 if (status & ST_BREAK)
2078 if (status & ST_FRAMING)
2080 if (status & ST_PARITY)
2082 if (status & ST_OVERRUN)
2085 (*linesw[tp->t_line].l_rint)(ch, tp);
2086 if (portp->rx.tail == head)
2089 if (++(portp->rx.tail) >= portp->rx.endbuf)
2090 portp->rx.tail = portp->rx.buf;
2094 if (head != portp->rx.tail)
2095 portp->state |= ASY_RXDATA;
2098 * If we were flow controled then maybe the buffer is low enough that
2099 * we can re-activate it.
2101 if ((portp->state & ASY_RTSFLOW) && ((tp->t_state & TS_TBLOCK) == 0))
2102 stl_flowcontrol(portp, 1, -1);
2105 /*****************************************************************************/
2107 static int stl_param(struct tty *tp, struct termios *tiosp)
2111 portp = (stlport_t *) tp;
2112 if (portp == (stlport_t *) NULL)
2115 return(stl_setport(portp, tiosp));
2118 /*****************************************************************************/
2121 * Action the flow control as required. The hw and sw args inform the
2122 * routine what flow control methods it should try.
2125 static void stl_flowcontrol(stlport_t *portp, int hw, int sw)
2127 unsigned char *head, *tail;
2131 printf("stl_flowcontrol(portp=%x,hw=%d,sw=%d)\n", (int) portp, hw, sw);
2136 if (portp->state & ASY_RTSFLOWMODE) {
2138 if ((portp->state & ASY_RTSFLOW) == 0)
2140 } else if (hw > 0) {
2141 if (portp->state & ASY_RTSFLOW) {
2142 head = portp->rx.head;
2143 tail = portp->rx.tail;
2144 len = (head >= tail) ? (head - tail) :
2145 (STL_RXBUFSIZE - (tail - head));
2146 if (len < STL_RXBUFHIGH)
2153 * We have worked out what to do, if anything. So now apply it to the
2156 stl_sendflow(portp, hwflow, sw);
2159 /*****************************************************************************/
2162 * Enable l_rint processing bypass mode if tty modes allow it.
2165 static void stl_ttyoptim(stlport_t *portp, struct termios *tiosp)
2170 if (((tiosp->c_iflag &
2171 (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP)) == 0) &&
2172 (((tiosp->c_iflag & BRKINT) == 0) || (tiosp->c_iflag & IGNBRK)) &&
2173 (((tiosp->c_iflag & PARMRK) == 0) ||
2174 ((tiosp->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))) &&
2175 ((tiosp->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) ==0) &&
2176 (linesw[tp->t_line].l_rint == ttyinput))
2177 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2179 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2180 portp->hotchar = linesw[tp->t_line].l_hotchar;
2183 /*****************************************************************************/
2186 * Try and find and initialize all the ports on a panel. We don't care
2187 * what sort of board these ports are on - since the port io registers
2188 * are almost identical when dealing with ports.
2191 static int stl_initports(stlbrd_t *brdp, stlpanel_t *panelp)
2194 unsigned int chipmask;
2198 printf("stl_initports(panelp=%x)\n", (int) panelp);
2201 chipmask = stl_panelinit(brdp, panelp);
2204 * All UART's are initialized if found. Now go through and setup
2205 * each ports data structures. Also initialize each individual
2208 for (i = 0; (i < panelp->nrports); i++) {
2209 portp = malloc(sizeof(stlport_t), M_TTYS, M_WAITOK | M_ZERO);
2212 portp->brdnr = panelp->brdnr;
2213 portp->panelnr = panelp->panelnr;
2214 portp->uartp = panelp->uartp;
2215 portp->clk = brdp->clk;
2216 panelp->ports[i] = portp;
2218 j = STL_TXBUFSIZE + (2 * STL_RXBUFSIZE);
2219 portp->tx.buf = malloc(j, M_TTYS, M_WAITOK);
2220 portp->tx.endbuf = portp->tx.buf + STL_TXBUFSIZE;
2221 portp->tx.head = portp->tx.buf;
2222 portp->tx.tail = portp->tx.buf;
2223 portp->rx.buf = portp->tx.buf + STL_TXBUFSIZE;
2224 portp->rx.endbuf = portp->rx.buf + STL_RXBUFSIZE;
2225 portp->rx.head = portp->rx.buf;
2226 portp->rx.tail = portp->rx.buf;
2227 portp->rxstatus.buf = portp->rx.buf + STL_RXBUFSIZE;
2228 portp->rxstatus.endbuf = portp->rxstatus.buf + STL_RXBUFSIZE;
2229 portp->rxstatus.head = portp->rxstatus.buf;
2230 portp->rxstatus.tail = portp->rxstatus.buf;
2231 bzero(portp->rxstatus.head, STL_RXBUFSIZE);
2233 portp->initintios.c_ispeed = STL_DEFSPEED;
2234 portp->initintios.c_ospeed = STL_DEFSPEED;
2235 portp->initintios.c_cflag = STL_DEFCFLAG;
2236 portp->initintios.c_iflag = 0;
2237 portp->initintios.c_oflag = 0;
2238 portp->initintios.c_lflag = 0;
2239 bcopy(&ttydefchars[0], &portp->initintios.c_cc[0],
2240 sizeof(portp->initintios.c_cc));
2241 portp->initouttios = portp->initintios;
2242 portp->dtrwait = 3 * hz;
2243 callout_init(&portp->dtr_ch);
2245 stl_portinit(brdp, panelp, portp);
2251 /*****************************************************************************/
2254 * Try to find and initialize an EasyIO board.
2257 static int stl_initeio(stlbrd_t *brdp)
2260 unsigned int status;
2263 printf("stl_initeio(brdp=%x)\n", (int) brdp);
2266 brdp->ioctrl = brdp->ioaddr1 + 1;
2267 brdp->iostatus = brdp->ioaddr1 + 2;
2268 brdp->clk = EIO_CLK;
2269 brdp->isr = stl_eiointr;
2271 status = inb(brdp->iostatus);
2272 switch (status & EIO_IDBITMASK) {
2274 brdp->clk = EIO_CLK8M;
2284 switch (status & EIO_BRDMASK) {
2303 if (brdp->brdtype == BRD_EASYIOPCI) {
2304 outb((brdp->ioaddr2 + 0x4c), 0x41);
2307 * Check that the supplied IRQ is good and then use it to setup the
2308 * programmable interrupt bits on EIO board. Also set the edge/level
2309 * triggered interrupt bit.
2311 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2312 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2313 printf("STALLION: invalid irq=%d for brd=%d\n",
2314 brdp->irq, brdp->brdnr);
2317 outb(brdp->ioctrl, (stl_vecmap[brdp->irq] |
2318 ((brdp->irqtype) ? EIO_INTLEVEL : EIO_INTEDGE)));
2321 panelp = malloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO);
2322 panelp->brdnr = brdp->brdnr;
2323 panelp->panelnr = 0;
2324 panelp->nrports = brdp->nrports;
2325 panelp->iobase = brdp->ioaddr1;
2326 panelp->hwid = status;
2327 if ((status & EIO_IDBITMASK) == EIO_MK3) {
2328 panelp->uartp = (void *) &stl_sc26198uart;
2329 panelp->isr = stl_sc26198intr;
2331 panelp->uartp = (void *) &stl_cd1400uart;
2332 panelp->isr = stl_cd1400eiointr;
2334 brdp->panels[0] = panelp;
2336 brdp->hwid = status;
2337 brdp->state |= BRD_FOUND;
2341 /*****************************************************************************/
2344 * Try to find an ECH board and initialize it. This code is capable of
2345 * dealing with all types of ECH board.
2348 static int stl_initech(stlbrd_t *brdp)
2351 unsigned int status, nxtid;
2352 int panelnr, ioaddr, banknr, i;
2355 printf("stl_initech(brdp=%x)\n", (int) brdp);
2359 * Set up the initial board register contents for boards. This varys a
2360 * bit between the different board types. So we need to handle each
2361 * separately. Also do a check that the supplied IRQ is good.
2363 switch (brdp->brdtype) {
2366 brdp->isr = stl_echatintr;
2367 brdp->ioctrl = brdp->ioaddr1 + 1;
2368 brdp->iostatus = brdp->ioaddr1 + 1;
2369 status = inb(brdp->iostatus);
2370 if ((status & ECH_IDBITMASK) != ECH_ID)
2372 brdp->hwid = status;
2374 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2375 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2376 printf("STALLION: invalid irq=%d for brd=%d\n",
2377 brdp->irq, brdp->brdnr);
2380 status = ((brdp->ioaddr2 & ECH_ADDR2MASK) >> 1);
2381 status |= (stl_vecmap[brdp->irq] << 1);
2382 outb(brdp->ioaddr1, (status | ECH_BRDRESET));
2383 brdp->ioctrlval = ECH_INTENABLE |
2384 ((brdp->irqtype) ? ECH_INTLEVEL : ECH_INTEDGE);
2385 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDENABLE));
2386 outb(brdp->ioaddr1, status);
2390 brdp->isr = stl_echmcaintr;
2391 brdp->ioctrl = brdp->ioaddr1 + 0x20;
2392 brdp->iostatus = brdp->ioctrl;
2393 status = inb(brdp->iostatus);
2394 if ((status & ECH_IDBITMASK) != ECH_ID)
2396 brdp->hwid = status;
2398 if ((brdp->irq < 0) || (brdp->irq > 15) ||
2399 (stl_vecmap[brdp->irq] == (unsigned char) 0xff)) {
2400 printf("STALLION: invalid irq=%d for brd=%d\n",
2401 brdp->irq, brdp->brdnr);
2404 outb(brdp->ioctrl, ECHMC_BRDRESET);
2405 outb(brdp->ioctrl, ECHMC_INTENABLE);
2409 brdp->isr = stl_echpciintr;
2410 brdp->ioctrl = brdp->ioaddr1 + 2;
2414 brdp->isr = stl_echpci64intr;
2415 brdp->ioctrl = brdp->ioaddr2 + 0x40;
2416 outb((brdp->ioaddr1 + 0x4c), 0x43);
2420 printf("STALLION: unknown board type=%d\n", brdp->brdtype);
2424 brdp->clk = ECH_CLK;
2427 * Scan through the secondary io address space looking for panels.
2428 * As we find'em allocate and initialize panel structures for each.
2430 ioaddr = brdp->ioaddr2;
2435 for (i = 0; (i < STL_MAXPANELS); i++) {
2436 if (brdp->brdtype == BRD_ECHPCI) {
2437 outb(brdp->ioctrl, nxtid);
2438 ioaddr = brdp->ioaddr2;
2440 status = inb(ioaddr + ECH_PNLSTATUS);
2441 if ((status & ECH_PNLIDMASK) != nxtid)
2443 panelp = malloc(sizeof(stlpanel_t), M_TTYS, M_WAITOK | M_ZERO);
2444 panelp->brdnr = brdp->brdnr;
2445 panelp->panelnr = panelnr;
2446 panelp->iobase = ioaddr;
2447 panelp->pagenr = nxtid;
2448 panelp->hwid = status;
2449 brdp->bnk2panel[banknr] = panelp;
2450 brdp->bnkpageaddr[banknr] = nxtid;
2451 brdp->bnkstataddr[banknr++] = ioaddr + ECH_PNLSTATUS;
2453 if (status & ECH_PNLXPID) {
2454 panelp->uartp = (void *) &stl_sc26198uart;
2455 panelp->isr = stl_sc26198intr;
2456 if (status & ECH_PNL16PORT) {
2457 panelp->nrports = 16;
2458 brdp->bnk2panel[banknr] = panelp;
2459 brdp->bnkpageaddr[banknr] = nxtid;
2460 brdp->bnkstataddr[banknr++] = ioaddr + 4 +
2463 panelp->nrports = 8;
2466 panelp->uartp = (void *) &stl_cd1400uart;
2467 panelp->isr = stl_cd1400echintr;
2468 if (status & ECH_PNL16PORT) {
2469 panelp->nrports = 16;
2470 panelp->ackmask = 0x80;
2471 if (brdp->brdtype != BRD_ECHPCI)
2472 ioaddr += EREG_BANKSIZE;
2473 brdp->bnk2panel[banknr] = panelp;
2474 brdp->bnkpageaddr[banknr] = ++nxtid;
2475 brdp->bnkstataddr[banknr++] = ioaddr +
2478 panelp->nrports = 8;
2479 panelp->ackmask = 0xc0;
2484 ioaddr += EREG_BANKSIZE;
2485 brdp->nrports += panelp->nrports;
2486 brdp->panels[panelnr++] = panelp;
2487 if ((brdp->brdtype == BRD_ECH) || (brdp->brdtype == BRD_ECHMC)){
2488 if (ioaddr >= (brdp->ioaddr2 + 0x20)) {
2489 printf("STALLION: too many ports attached "
2490 "to board %d, remove last module\n",
2497 brdp->nrpanels = panelnr;
2498 brdp->nrbnks = banknr;
2499 if (brdp->brdtype == BRD_ECH)
2500 outb(brdp->ioctrl, (brdp->ioctrlval | ECH_BRDDISABLE));
2502 brdp->state |= BRD_FOUND;
2506 /*****************************************************************************/
2509 * Initialize and configure the specified board. This firstly probes
2510 * for the board, if it is found then the board is initialized and
2511 * then all its ports are initialized as well.
2514 static int stl_brdinit(stlbrd_t *brdp)
2520 printf("stl_brdinit(brdp=%x): unit=%d type=%d io1=%x io2=%x irq=%d\n",
2521 (int) brdp, brdp->brdnr, brdp->brdtype, brdp->ioaddr1,
2522 brdp->ioaddr2, brdp->irq);
2525 switch (brdp->brdtype) {
2537 printf("STALLION: unit=%d is unknown board type=%d\n",
2538 brdp->brdnr, brdp->brdtype);
2542 stl_brds[brdp->brdnr] = brdp;
2543 if ((brdp->state & BRD_FOUND) == 0) {
2545 printf("STALLION: %s board not found, unit=%d io=%x irq=%d\n",
2546 stl_brdnames[brdp->brdtype], brdp->brdnr,
2547 brdp->ioaddr1, brdp->irq);
2552 for (i = 0, k = 0; (i < STL_MAXPANELS); i++) {
2553 panelp = brdp->panels[i];
2554 if (panelp != (stlpanel_t *) NULL) {
2555 stl_initports(brdp, panelp);
2556 for (j = 0; (j < panelp->nrports); j++)
2557 brdp->ports[k++] = panelp->ports[j];
2561 printf("stl%d: %s (driver version %s) unit=%d nrpanels=%d nrports=%d\n",
2562 brdp->unitid, stl_brdnames[brdp->brdtype], stl_drvversion,
2563 brdp->brdnr, brdp->nrpanels, brdp->nrports);
2567 /*****************************************************************************/
2570 * Return the board stats structure to user app.
2573 static int stl_getbrdstats(caddr_t data)
2579 stl_brdstats = *((combrd_t *) data);
2580 if (stl_brdstats.brd >= STL_MAXBRDS)
2582 brdp = stl_brds[stl_brdstats.brd];
2583 if (brdp == (stlbrd_t *) NULL)
2586 bzero(&stl_brdstats, sizeof(combrd_t));
2587 stl_brdstats.brd = brdp->brdnr;
2588 stl_brdstats.type = brdp->brdtype;
2589 stl_brdstats.hwid = brdp->hwid;
2590 stl_brdstats.state = brdp->state;
2591 stl_brdstats.ioaddr = brdp->ioaddr1;
2592 stl_brdstats.ioaddr2 = brdp->ioaddr2;
2593 stl_brdstats.irq = brdp->irq;
2594 stl_brdstats.nrpanels = brdp->nrpanels;
2595 stl_brdstats.nrports = brdp->nrports;
2596 for (i = 0; (i < brdp->nrpanels); i++) {
2597 panelp = brdp->panels[i];
2598 stl_brdstats.panels[i].panel = i;
2599 stl_brdstats.panels[i].hwid = panelp->hwid;
2600 stl_brdstats.panels[i].nrports = panelp->nrports;
2603 *((combrd_t *) data) = stl_brdstats;;
2607 /*****************************************************************************/
2610 * Resolve the referenced port number into a port struct pointer.
2613 static stlport_t *stl_getport(int brdnr, int panelnr, int portnr)
2618 if ((brdnr < 0) || (brdnr >= STL_MAXBRDS))
2619 return((stlport_t *) NULL);
2620 brdp = stl_brds[brdnr];
2621 if (brdp == (stlbrd_t *) NULL)
2622 return((stlport_t *) NULL);
2623 if ((panelnr < 0) || (panelnr >= brdp->nrpanels))
2624 return((stlport_t *) NULL);
2625 panelp = brdp->panels[panelnr];
2626 if (panelp == (stlpanel_t *) NULL)
2627 return((stlport_t *) NULL);
2628 if ((portnr < 0) || (portnr >= panelp->nrports))
2629 return((stlport_t *) NULL);
2630 return(panelp->ports[portnr]);
2633 /*****************************************************************************/
2636 * Return the port stats structure to user app. A NULL port struct
2637 * pointer passed in means that we need to find out from the app
2638 * what port to get stats for (used through board control device).
2641 static int stl_getportstats(stlport_t *portp, caddr_t data)
2643 unsigned char *head, *tail;
2645 if (portp == (stlport_t *) NULL) {
2646 stl_comstats = *((comstats_t *) data);
2647 portp = stl_getport(stl_comstats.brd, stl_comstats.panel,
2649 if (portp == (stlport_t *) NULL)
2653 portp->stats.state = portp->state;
2654 /*portp->stats.flags = portp->flags;*/
2655 portp->stats.hwid = portp->hwid;
2656 portp->stats.ttystate = portp->tty.t_state;
2657 portp->stats.cflags = portp->tty.t_cflag;
2658 portp->stats.iflags = portp->tty.t_iflag;
2659 portp->stats.oflags = portp->tty.t_oflag;
2660 portp->stats.lflags = portp->tty.t_lflag;
2662 head = portp->tx.head;
2663 tail = portp->tx.tail;
2664 portp->stats.txbuffered = ((head >= tail) ? (head - tail) :
2665 (STL_TXBUFSIZE - (tail - head)));
2667 head = portp->rx.head;
2668 tail = portp->rx.tail;
2669 portp->stats.rxbuffered = (head >= tail) ? (head - tail) :
2670 (STL_RXBUFSIZE - (tail - head));
2672 portp->stats.signals = (unsigned long) stl_getsignals(portp);
2674 *((comstats_t *) data) = portp->stats;
2678 /*****************************************************************************/
2681 * Clear the port stats structure. We also return it zeroed out...
2684 static int stl_clrportstats(stlport_t *portp, caddr_t data)
2686 if (portp == (stlport_t *) NULL) {
2687 stl_comstats = *((comstats_t *) data);
2688 portp = stl_getport(stl_comstats.brd, stl_comstats.panel,
2690 if (portp == (stlport_t *) NULL)
2694 bzero(&portp->stats, sizeof(comstats_t));
2695 portp->stats.brd = portp->brdnr;
2696 portp->stats.panel = portp->panelnr;
2697 portp->stats.port = portp->portnr;
2698 *((comstats_t *) data) = stl_comstats;
2702 /*****************************************************************************/
2705 * The "staliomem" device is used for stats collection in this driver.
2708 static int stl_memioctl(dev_t dev, unsigned long cmd, caddr_t data, int flag,
2714 printf("stl_memioctl(dev=%s,cmd=%lx,data=%p,flag=%x)\n",
2715 devtoname(dev), cmd, (void *) data, flag);
2721 case COM_GETPORTSTATS:
2722 rc = stl_getportstats((stlport_t *) NULL, data);
2724 case COM_CLRPORTSTATS:
2725 rc = stl_clrportstats((stlport_t *) NULL, data);
2727 case COM_GETBRDSTATS:
2728 rc = stl_getbrdstats(data);
2738 /*****************************************************************************/
2740 /*****************************************************************************/
2741 /* CD1400 UART CODE */
2742 /*****************************************************************************/
2745 * These functions get/set/update the registers of the cd1400 UARTs.
2746 * Access to the cd1400 registers is via an address/data io port pair.
2749 static int stl_cd1400getreg(stlport_t *portp, int regnr)
2751 outb(portp->ioaddr, (regnr + portp->uartaddr));
2752 return(inb(portp->ioaddr + EREG_DATA));
2755 /*****************************************************************************/
2757 static void stl_cd1400setreg(stlport_t *portp, int regnr, int value)
2759 outb(portp->ioaddr, (regnr + portp->uartaddr));
2760 outb((portp->ioaddr + EREG_DATA), value);
2763 /*****************************************************************************/
2765 static int stl_cd1400updatereg(stlport_t *portp, int regnr, int value)
2767 outb(portp->ioaddr, (regnr + portp->uartaddr));
2768 if (inb(portp->ioaddr + EREG_DATA) != value) {
2769 outb((portp->ioaddr + EREG_DATA), value);
2775 /*****************************************************************************/
2777 static void stl_cd1400flush(stlport_t *portp, int flag)
2782 printf("stl_cd1400flush(portp=%x,flag=%x)\n", (int) portp, flag);
2785 if (portp == (stlport_t *) NULL)
2790 if (flag & FWRITE) {
2791 BRDENABLE(portp->brdnr, portp->pagenr);
2792 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
2793 stl_cd1400ccrwait(portp);
2794 stl_cd1400setreg(portp, CCR, CCR_TXFLUSHFIFO);
2795 stl_cd1400ccrwait(portp);
2796 BRDDISABLE(portp->brdnr);
2806 /*****************************************************************************/
2808 static void stl_cd1400ccrwait(stlport_t *portp)
2812 for (i = 0; (i < CCR_MAXWAIT); i++) {
2813 if (stl_cd1400getreg(portp, CCR) == 0)
2817 printf("stl%d: cd1400 device not responding, panel=%d port=%d\n",
2818 portp->brdnr, portp->panelnr, portp->portnr);
2821 /*****************************************************************************/
2824 * Transmit interrupt handler. This has gotta be fast! Handling TX
2825 * chars is pretty simple, stuff as many as possible from the TX buffer
2826 * into the cd1400 FIFO. Must also handle TX breaks here, since they
2827 * are embedded as commands in the data stream. Oh no, had to use a goto!
2830 static __inline void stl_cd1400txisr(stlpanel_t *panelp, int ioaddr)
2834 unsigned char ioack, srer;
2839 printf("stl_cd1400txisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
2842 ioack = inb(ioaddr + EREG_TXACK);
2843 if (((ioack & panelp->ackmask) != 0) ||
2844 ((ioack & ACK_TYPMASK) != ACK_TYPTX)) {
2845 printf("STALLION: bad TX interrupt ack value=%x\n",
2849 portp = panelp->ports[(ioack >> 3)];
2853 * Unfortunately we need to handle breaks in the data stream, since
2854 * this is the only way to generate them on the cd1400. Do it now if
2855 * a break is to be sent. Some special cases here: brklen is -1 then
2856 * start sending an un-timed break, if brklen is -2 then stop sending
2857 * an un-timed break, if brklen is -3 then we have just sent an
2858 * un-timed break and do not want any data to go out, if brklen is -4
2859 * then a break has just completed so clean up the port settings.
2861 if (portp->brklen != 0) {
2862 if (portp->brklen >= -1) {
2863 outb(ioaddr, (TDR + portp->uartaddr));
2864 outb((ioaddr + EREG_DATA), ETC_CMD);
2865 outb((ioaddr + EREG_DATA), ETC_STARTBREAK);
2866 if (portp->brklen > 0) {
2867 outb((ioaddr + EREG_DATA), ETC_CMD);
2868 outb((ioaddr + EREG_DATA), ETC_DELAY);
2869 outb((ioaddr + EREG_DATA), portp->brklen);
2870 outb((ioaddr + EREG_DATA), ETC_CMD);
2871 outb((ioaddr + EREG_DATA), ETC_STOPBREAK);
2876 } else if (portp->brklen == -2) {
2877 outb(ioaddr, (TDR + portp->uartaddr));
2878 outb((ioaddr + EREG_DATA), ETC_CMD);
2879 outb((ioaddr + EREG_DATA), ETC_STOPBREAK);
2881 } else if (portp->brklen == -3) {
2882 outb(ioaddr, (SRER + portp->uartaddr));
2883 srer = inb(ioaddr + EREG_DATA);
2884 srer &= ~(SRER_TXDATA | SRER_TXEMPTY);
2885 outb((ioaddr + EREG_DATA), srer);
2887 outb(ioaddr, (COR2 + portp->uartaddr));
2888 outb((ioaddr + EREG_DATA),
2889 (inb(ioaddr + EREG_DATA) & ~COR2_ETC));
2895 head = portp->tx.head;
2896 tail = portp->tx.tail;
2897 len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head));
2898 if ((len == 0) || ((len < STL_TXBUFLOW) &&
2899 ((portp->state & ASY_TXLOW) == 0))) {
2900 portp->state |= ASY_TXLOW;
2905 outb(ioaddr, (SRER + portp->uartaddr));
2906 srer = inb(ioaddr + EREG_DATA);
2907 if (srer & SRER_TXDATA) {
2908 srer = (srer & ~SRER_TXDATA) | SRER_TXEMPTY;
2910 srer &= ~(SRER_TXDATA | SRER_TXEMPTY);
2911 portp->state |= ASY_TXEMPTY;
2912 portp->state &= ~ASY_TXBUSY;
2914 outb((ioaddr + EREG_DATA), srer);
2916 len = MIN(len, CD1400_TXFIFOSIZE);
2917 portp->stats.txtotal += len;
2918 stlen = MIN(len, (portp->tx.endbuf - tail));
2919 outb(ioaddr, (TDR + portp->uartaddr));
2920 outsb((ioaddr + EREG_DATA), tail, stlen);
2923 if (tail >= portp->tx.endbuf)
2924 tail = portp->tx.buf;
2926 outsb((ioaddr + EREG_DATA), tail, len);
2929 portp->tx.tail = tail;
2933 outb(ioaddr, (EOSRR + portp->uartaddr));
2934 outb((ioaddr + EREG_DATA), 0);
2937 /*****************************************************************************/
2940 * Receive character interrupt handler. Determine if we have good chars
2941 * or bad chars and then process appropriately.
2944 static __inline void stl_cd1400rxisr(stlpanel_t *panelp, int ioaddr)
2948 unsigned int ioack, len, buflen, stlen;
2949 unsigned char status;
2954 printf("stl_cd1400rxisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
2957 ioack = inb(ioaddr + EREG_RXACK);
2958 if ((ioack & panelp->ackmask) != 0) {
2959 printf("STALLION: bad RX interrupt ack value=%x\n", ioack);
2962 portp = panelp->ports[(ioack >> 3)];
2966 * First up, calculate how much room there is in the RX ring queue.
2967 * We also want to keep track of the longest possible copy length,
2968 * this has to allow for the wrapping of the ring queue.
2970 head = portp->rx.head;
2971 tail = portp->rx.tail;
2973 buflen = STL_RXBUFSIZE - (head - tail) - 1;
2974 stlen = portp->rx.endbuf - head;
2976 buflen = tail - head - 1;
2981 * Check if the input buffer is near full. If so then we should take
2982 * some flow control action... It is very easy to do hardware and
2983 * software flow control from here since we have the port selected on
2986 if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) {
2987 if (((portp->state & ASY_RTSFLOW) == 0) &&
2988 (portp->state & ASY_RTSFLOWMODE)) {
2989 portp->state |= ASY_RTSFLOW;
2990 stl_cd1400setreg(portp, MCOR1,
2991 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
2992 stl_cd1400setreg(portp, MSVR2, 0);
2993 portp->stats.rxrtsoff++;
2998 * OK we are set, process good data... If the RX ring queue is full
2999 * just chuck the chars - don't leave them in the UART.
3001 if ((ioack & ACK_TYPMASK) == ACK_TYPRXGOOD) {
3002 outb(ioaddr, (RDCR + portp->uartaddr));
3003 len = inb(ioaddr + EREG_DATA);
3005 outb(ioaddr, (RDSR + portp->uartaddr));
3006 insb((ioaddr + EREG_DATA), &stl_unwanted[0], len);
3007 portp->stats.rxlost += len;
3008 portp->stats.rxtotal += len;
3010 len = MIN(len, buflen);
3011 portp->stats.rxtotal += len;
3012 stlen = MIN(len, stlen);
3014 outb(ioaddr, (RDSR + portp->uartaddr));
3015 insb((ioaddr + EREG_DATA), head, stlen);
3017 if (head >= portp->rx.endbuf) {
3018 head = portp->rx.buf;
3020 insb((ioaddr + EREG_DATA), head, len);
3025 } else if ((ioack & ACK_TYPMASK) == ACK_TYPRXBAD) {
3026 outb(ioaddr, (RDSR + portp->uartaddr));
3027 status = inb(ioaddr + EREG_DATA);
3028 ch = inb(ioaddr + EREG_DATA);
3029 if (status & ST_BREAK)
3030 portp->stats.rxbreaks++;
3031 if (status & ST_FRAMING)
3032 portp->stats.rxframing++;
3033 if (status & ST_PARITY)
3034 portp->stats.rxparity++;
3035 if (status & ST_OVERRUN)
3036 portp->stats.rxoverrun++;
3037 if (status & ST_SCHARMASK) {
3038 if ((status & ST_SCHARMASK) == ST_SCHAR1)
3039 portp->stats.txxon++;
3040 if ((status & ST_SCHARMASK) == ST_SCHAR2)
3041 portp->stats.txxoff++;
3044 if ((portp->rxignoremsk & status) == 0) {
3045 if ((tp->t_state & TS_CAN_BYPASS_L_RINT) &&
3046 ((status & ST_FRAMING) ||
3047 ((status & ST_PARITY) && (tp->t_iflag & INPCK))))
3049 if ((portp->rxmarkmsk & status) == 0)
3051 *(head + STL_RXBUFSIZE) = status;
3053 if (head >= portp->rx.endbuf)
3054 head = portp->rx.buf;
3057 printf("STALLION: bad RX interrupt ack value=%x\n", ioack);
3061 portp->rx.head = head;
3062 portp->state |= ASY_RXDATA;
3066 outb(ioaddr, (EOSRR + portp->uartaddr));
3067 outb((ioaddr + EREG_DATA), 0);
3070 /*****************************************************************************/
3073 * Modem interrupt handler. The is called when the modem signal line
3074 * (DCD) has changed state.
3077 static __inline void stl_cd1400mdmisr(stlpanel_t *panelp, int ioaddr)
3084 printf("stl_cd1400mdmisr(panelp=%x,ioaddr=%x)\n", (int) panelp, ioaddr);
3087 ioack = inb(ioaddr + EREG_MDACK);
3088 if (((ioack & panelp->ackmask) != 0) ||
3089 ((ioack & ACK_TYPMASK) != ACK_TYPMDM)) {
3090 printf("STALLION: bad MODEM interrupt ack value=%x\n", ioack);
3093 portp = panelp->ports[(ioack >> 3)];
3095 outb(ioaddr, (MISR + portp->uartaddr));
3096 misr = inb(ioaddr + EREG_DATA);
3097 if (misr & MISR_DCD) {
3098 portp->state |= ASY_DCDCHANGE;
3099 portp->stats.modem++;
3103 outb(ioaddr, (EOSRR + portp->uartaddr));
3104 outb((ioaddr + EREG_DATA), 0);
3107 /*****************************************************************************/
3110 * Interrupt service routine for cd1400 EasyIO boards.
3113 static void stl_cd1400eiointr(stlpanel_t *panelp, unsigned int iobase)
3115 unsigned char svrtype;
3118 printf("stl_cd1400eiointr(panelp=%x,iobase=%x)\n", (int) panelp,
3123 svrtype = inb(iobase + EREG_DATA);
3124 if (panelp->nrports > 4) {
3125 outb(iobase, (SVRR + 0x80));
3126 svrtype |= inb(iobase + EREG_DATA);
3129 printf("stl_cd1400eiointr(panelp=%x,iobase=%x): svrr=%x\n", (int) panelp, iobase, svrtype);
3132 if (svrtype & SVRR_RX)
3133 stl_cd1400rxisr(panelp, iobase);
3134 else if (svrtype & SVRR_TX)
3135 stl_cd1400txisr(panelp, iobase);
3136 else if (svrtype & SVRR_MDM)
3137 stl_cd1400mdmisr(panelp, iobase);
3140 /*****************************************************************************/
3143 * Interrupt service routine for cd1400 panels.
3146 static void stl_cd1400echintr(stlpanel_t *panelp, unsigned int iobase)
3148 unsigned char svrtype;
3151 printf("stl_cd1400echintr(panelp=%x,iobase=%x)\n", (int) panelp,
3156 svrtype = inb(iobase + EREG_DATA);
3157 outb(iobase, (SVRR + 0x80));
3158 svrtype |= inb(iobase + EREG_DATA);
3159 if (svrtype & SVRR_RX)
3160 stl_cd1400rxisr(panelp, iobase);
3161 else if (svrtype & SVRR_TX)
3162 stl_cd1400txisr(panelp, iobase);
3163 else if (svrtype & SVRR_MDM)
3164 stl_cd1400mdmisr(panelp, iobase);
3167 /*****************************************************************************/
3170 * Set up the cd1400 registers for a port based on the termios port
3174 static int stl_cd1400setport(stlport_t *portp, struct termios *tiosp)
3176 unsigned int clkdiv;
3177 unsigned char cor1, cor2, cor3;
3178 unsigned char cor4, cor5, ccr;
3179 unsigned char srer, sreron, sreroff;
3180 unsigned char mcor1, mcor2, rtpr;
3181 unsigned char clk, div;
3185 printf("stl_cd1400setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n",
3186 (int) portp, (int) tiosp, portp->brdnr, portp->portnr);
3204 * Set up the RX char ignore mask with those RX error types we
3205 * can ignore. We could have used some special modes of the cd1400
3206 * UART to help, but it is better this way because we can keep stats
3207 * on the number of each type of RX exception event.
3209 portp->rxignoremsk = 0;
3210 if (tiosp->c_iflag & IGNPAR)
3211 portp->rxignoremsk |= (ST_PARITY | ST_FRAMING | ST_OVERRUN);
3212 if (tiosp->c_iflag & IGNBRK)
3213 portp->rxignoremsk |= ST_BREAK;
3215 portp->rxmarkmsk = ST_OVERRUN;
3216 if (tiosp->c_iflag & (INPCK | PARMRK))
3217 portp->rxmarkmsk |= (ST_PARITY | ST_FRAMING);
3218 if (tiosp->c_iflag & BRKINT)
3219 portp->rxmarkmsk |= ST_BREAK;
3222 * Go through the char size, parity and stop bits and set all the
3223 * option registers appropriately.
3225 switch (tiosp->c_cflag & CSIZE) {
3240 if (tiosp->c_cflag & CSTOPB)
3245 if (tiosp->c_cflag & PARENB) {
3246 if (tiosp->c_cflag & PARODD)
3247 cor1 |= (COR1_PARENB | COR1_PARODD);
3249 cor1 |= (COR1_PARENB | COR1_PAREVEN);
3251 cor1 |= COR1_PARNONE;
3255 * Set the RX FIFO threshold at 6 chars. This gives a bit of breathing
3256 * space for hardware flow control and the like. This should be set to
3257 * VMIN. Also here we will set the RX data timeout to 10ms - this should
3258 * really be based on VTIME...
3260 cor3 |= FIFO_RXTHRESHOLD;
3264 * Calculate the baud rate timers. For now we will just assume that
3265 * the input and output baud are the same. Could have used a baud
3266 * table here, but this way we can generate virtually any baud rate
3269 if (tiosp->c_ispeed == 0)
3270 tiosp->c_ispeed = tiosp->c_ospeed;
3271 if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > CD1400_MAXBAUD))
3274 if (tiosp->c_ospeed > 0) {
3275 for (clk = 0; (clk < CD1400_NUMCLKS); clk++) {
3276 clkdiv = ((portp->clk / stl_cd1400clkdivs[clk]) /
3281 div = (unsigned char) clkdiv;
3285 * Check what form of modem signaling is required and set it up.
3287 if ((tiosp->c_cflag & CLOCAL) == 0) {
3290 sreron |= SRER_MODEM;
3294 * Setup cd1400 enhanced modes if we can. In particular we want to
3295 * handle as much of the flow control as possbile automatically. As
3296 * well as saving a few CPU cycles it will also greatly improve flow
3297 * control reliablilty.
3299 if (tiosp->c_iflag & IXON) {
3302 if (tiosp->c_iflag & IXANY)
3306 if (tiosp->c_cflag & CCTS_OFLOW)
3308 if (tiosp->c_cflag & CRTS_IFLOW)
3309 mcor1 |= FIFO_RTSTHRESHOLD;
3312 * All cd1400 register values calculated so go through and set them
3316 printf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr,
3317 portp->panelnr, portp->brdnr);
3318 printf(" cor1=%x cor2=%x cor3=%x cor4=%x cor5=%x\n", cor1, cor2,
3320 printf(" mcor1=%x mcor2=%x rtpr=%x sreron=%x sreroff=%x\n",
3321 mcor1, mcor2, rtpr, sreron, sreroff);
3322 printf(" tcor=%x tbpr=%x rcor=%x rbpr=%x\n", clk, div, clk, div);
3323 printf(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
3324 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP], tiosp->c_cc[VSTART],
3325 tiosp->c_cc[VSTOP]);
3329 BRDENABLE(portp->brdnr, portp->pagenr);
3330 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3331 srer = stl_cd1400getreg(portp, SRER);
3332 stl_cd1400setreg(portp, SRER, 0);
3333 ccr += stl_cd1400updatereg(portp, COR1, cor1);
3334 ccr += stl_cd1400updatereg(portp, COR2, cor2);
3335 ccr += stl_cd1400updatereg(portp, COR3, cor3);
3337 stl_cd1400ccrwait(portp);
3338 stl_cd1400setreg(portp, CCR, CCR_CORCHANGE);
3340 stl_cd1400setreg(portp, COR4, cor4);
3341 stl_cd1400setreg(portp, COR5, cor5);
3342 stl_cd1400setreg(portp, MCOR1, mcor1);
3343 stl_cd1400setreg(portp, MCOR2, mcor2);
3344 if (tiosp->c_ospeed == 0) {
3345 stl_cd1400setreg(portp, MSVR1, 0);
3347 stl_cd1400setreg(portp, MSVR1, MSVR1_DTR);
3348 stl_cd1400setreg(portp, TCOR, clk);
3349 stl_cd1400setreg(portp, TBPR, div);
3350 stl_cd1400setreg(portp, RCOR, clk);
3351 stl_cd1400setreg(portp, RBPR, div);
3353 stl_cd1400setreg(portp, SCHR1, tiosp->c_cc[VSTART]);
3354 stl_cd1400setreg(portp, SCHR2, tiosp->c_cc[VSTOP]);
3355 stl_cd1400setreg(portp, SCHR3, tiosp->c_cc[VSTART]);
3356 stl_cd1400setreg(portp, SCHR4, tiosp->c_cc[VSTOP]);
3357 stl_cd1400setreg(portp, RTPR, rtpr);
3358 mcor1 = stl_cd1400getreg(portp, MSVR1);
3359 if (mcor1 & MSVR1_DCD)
3360 portp->sigs |= TIOCM_CD;
3362 portp->sigs &= ~TIOCM_CD;
3363 stl_cd1400setreg(portp, SRER, ((srer & ~sreroff) | sreron));
3364 BRDDISABLE(portp->brdnr);
3365 portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE);
3366 portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0);
3367 portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0);
3368 stl_ttyoptim(portp, tiosp);
3374 /*****************************************************************************/
3377 * Action the flow control as required. The hw and sw args inform the
3378 * routine what flow control methods it should try.
3381 static void stl_cd1400sendflow(stlport_t *portp, int hw, int sw)
3386 printf("stl_cd1400sendflow(portp=%x,hw=%d,sw=%d)\n",
3387 (int) portp, hw, sw);
3391 BRDENABLE(portp->brdnr, portp->pagenr);
3392 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3395 stl_cd1400ccrwait(portp);
3397 stl_cd1400setreg(portp, CCR, CCR_SENDSCHR2);
3398 portp->stats.rxxoff++;
3400 stl_cd1400setreg(portp, CCR, CCR_SENDSCHR1);
3401 portp->stats.rxxon++;
3403 stl_cd1400ccrwait(portp);
3407 portp->state |= ASY_RTSFLOW;
3408 stl_cd1400setreg(portp, MCOR1,
3409 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
3410 stl_cd1400setreg(portp, MSVR2, 0);
3411 portp->stats.rxrtsoff++;
3412 } else if (hw > 0) {
3413 portp->state &= ~ASY_RTSFLOW;
3414 stl_cd1400setreg(portp, MSVR2, MSVR2_RTS);
3415 stl_cd1400setreg(portp, MCOR1,
3416 (stl_cd1400getreg(portp, MCOR1) | FIFO_RTSTHRESHOLD));
3417 portp->stats.rxrtson++;
3420 BRDDISABLE(portp->brdnr);
3424 /*****************************************************************************/
3427 * Return the current state of data flow on this port. This is only
3428 * really interresting when determining if data has fully completed
3429 * transmission or not... This is easy for the cd1400, it accurately
3430 * maintains the busy port flag.
3433 static int stl_cd1400datastate(stlport_t *portp)
3436 printf("stl_cd1400datastate(portp=%x)\n", (int) portp);
3439 if (portp == (stlport_t *) NULL)
3442 return((portp->state & ASY_TXBUSY) ? 1 : 0);
3445 /*****************************************************************************/
3448 * Set the state of the DTR and RTS signals. Got to do some extra
3449 * work here to deal hardware flow control.
3452 static void stl_cd1400setsignals(stlport_t *portp, int dtr, int rts)
3454 unsigned char msvr1, msvr2;
3458 printf("stl_cd1400setsignals(portp=%x,dtr=%d,rts=%d)\n", (int) portp,
3470 BRDENABLE(portp->brdnr, portp->pagenr);
3471 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3473 if (portp->tty.t_cflag & CRTS_IFLOW) {
3475 stl_cd1400setreg(portp, MCOR1,
3476 (stl_cd1400getreg(portp, MCOR1) & 0xf0));
3477 portp->stats.rxrtsoff++;
3479 stl_cd1400setreg(portp, MCOR1,
3480 (stl_cd1400getreg(portp, MCOR1) |
3481 FIFO_RTSTHRESHOLD));
3482 portp->stats.rxrtson++;
3485 stl_cd1400setreg(portp, MSVR2, msvr2);
3488 stl_cd1400setreg(portp, MSVR1, msvr1);
3489 BRDDISABLE(portp->brdnr);
3493 /*****************************************************************************/
3496 * Get the state of the signals.
3499 static int stl_cd1400getsignals(stlport_t *portp)
3501 unsigned char msvr1, msvr2;
3505 printf("stl_cd1400getsignals(portp=%x)\n", (int) portp);
3509 BRDENABLE(portp->brdnr, portp->pagenr);
3510 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3511 msvr1 = stl_cd1400getreg(portp, MSVR1);
3512 msvr2 = stl_cd1400getreg(portp, MSVR2);
3513 BRDDISABLE(portp->brdnr);
3517 sigs |= (msvr1 & MSVR1_DCD) ? TIOCM_CD : 0;
3518 sigs |= (msvr1 & MSVR1_CTS) ? TIOCM_CTS : 0;
3519 sigs |= (msvr1 & MSVR1_DTR) ? TIOCM_DTR : 0;
3520 sigs |= (msvr2 & MSVR2_RTS) ? TIOCM_RTS : 0;
3522 sigs |= (msvr1 & MSVR1_RI) ? TIOCM_RI : 0;
3523 sigs |= (msvr1 & MSVR1_DSR) ? TIOCM_DSR : 0;
3530 /*****************************************************************************/
3533 * Enable or disable the Transmitter and/or Receiver.
3536 static void stl_cd1400enablerxtx(stlport_t *portp, int rx, int tx)
3542 printf("stl_cd1400enablerxtx(portp=%x,rx=%d,tx=%d)\n",
3543 (int) portp, rx, tx);
3548 ccr |= CCR_TXDISABLE;
3550 ccr |= CCR_TXENABLE;
3552 ccr |= CCR_RXDISABLE;
3554 ccr |= CCR_RXENABLE;
3557 BRDENABLE(portp->brdnr, portp->pagenr);
3558 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x03));
3559 stl_cd1400ccrwait(portp);
3560 stl_cd1400setreg(portp, CCR, ccr);
3561 stl_cd1400ccrwait(portp);
3562 BRDDISABLE(portp->brdnr);
3566 /*****************************************************************************/
3569 * Start or stop the Transmitter and/or Receiver.
3572 static void stl_cd1400startrxtx(stlport_t *portp, int rx, int tx)
3574 unsigned char sreron, sreroff;
3578 printf("stl_cd1400startrxtx(portp=%x,rx=%d,tx=%d)\n",
3579 (int) portp, rx, tx);
3585 sreroff |= (SRER_TXDATA | SRER_TXEMPTY);
3587 sreron |= SRER_TXDATA;
3589 sreron |= SRER_TXEMPTY;
3591 sreroff |= SRER_RXDATA;
3593 sreron |= SRER_RXDATA;
3596 BRDENABLE(portp->brdnr, portp->pagenr);
3597 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3598 stl_cd1400setreg(portp, SRER,
3599 ((stl_cd1400getreg(portp, SRER) & ~sreroff) | sreron));
3600 BRDDISABLE(portp->brdnr);
3602 portp->state |= ASY_TXBUSY;
3603 portp->tty.t_state |= TS_BUSY;
3608 /*****************************************************************************/
3611 * Disable all interrupts from this port.
3614 static void stl_cd1400disableintrs(stlport_t *portp)
3619 printf("stl_cd1400disableintrs(portp=%x)\n", (int) portp);
3623 BRDENABLE(portp->brdnr, portp->pagenr);
3624 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3625 stl_cd1400setreg(portp, SRER, 0);
3626 BRDDISABLE(portp->brdnr);
3630 /*****************************************************************************/
3632 static void stl_cd1400sendbreak(stlport_t *portp, long len)
3637 printf("stl_cd1400sendbreak(portp=%x,len=%d)\n", (int) portp,
3642 BRDENABLE(portp->brdnr, portp->pagenr);
3643 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3644 stl_cd1400setreg(portp, COR2,
3645 (stl_cd1400getreg(portp, COR2) | COR2_ETC));
3646 stl_cd1400setreg(portp, SRER,
3647 ((stl_cd1400getreg(portp, SRER) & ~SRER_TXDATA) |
3649 BRDDISABLE(portp->brdnr);
3652 portp->brklen = (len > 255) ? 255 : len;
3654 portp->brklen = len;
3657 portp->stats.txbreaks++;
3660 /*****************************************************************************/
3663 * Try and find and initialize all the ports on a panel. We don't care
3664 * what sort of board these ports are on - since the port io registers
3665 * are almost identical when dealing with ports.
3668 static void stl_cd1400portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp)
3671 printf("stl_cd1400portinit(brdp=%x,panelp=%x,portp=%x)\n",
3672 (int) brdp, (int) panelp, (int) portp);
3675 if ((brdp == (stlbrd_t *) NULL) || (panelp == (stlpanel_t *) NULL) ||
3676 (portp == (stlport_t *) NULL))
3679 portp->ioaddr = panelp->iobase + (((brdp->brdtype == BRD_ECHPCI) ||
3680 (portp->portnr < 8)) ? 0 : EREG_BANKSIZE);
3681 portp->uartaddr = (portp->portnr & 0x04) << 5;
3682 portp->pagenr = panelp->pagenr + (portp->portnr >> 3);
3684 BRDENABLE(portp->brdnr, portp->pagenr);
3685 stl_cd1400setreg(portp, CAR, (portp->portnr & 0x3));
3686 stl_cd1400setreg(portp, LIVR, (portp->portnr << 3));
3687 portp->hwid = stl_cd1400getreg(portp, GFRCR);
3688 BRDDISABLE(portp->brdnr);
3691 /*****************************************************************************/
3694 * Inbitialize the UARTs in a panel. We don't care what sort of board
3695 * these ports are on - since the port io registers are almost
3696 * identical when dealing with ports.
3699 static int stl_cd1400panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
3703 int nrchips, uartaddr, ioaddr;
3706 printf("stl_cd1400panelinit(brdp=%x,panelp=%x)\n", (int) brdp,
3710 BRDENABLE(panelp->brdnr, panelp->pagenr);
3713 * Check that each chip is present and started up OK.
3716 nrchips = panelp->nrports / CD1400_PORTS;
3717 for (i = 0; (i < nrchips); i++) {
3718 if (brdp->brdtype == BRD_ECHPCI) {
3719 outb((panelp->pagenr + (i >> 1)), brdp->ioctrl);
3720 ioaddr = panelp->iobase;
3722 ioaddr = panelp->iobase + (EREG_BANKSIZE * (i >> 1));
3724 uartaddr = (i & 0x01) ? 0x080 : 0;
3725 outb(ioaddr, (GFRCR + uartaddr));
3726 outb((ioaddr + EREG_DATA), 0);
3727 outb(ioaddr, (CCR + uartaddr));
3728 outb((ioaddr + EREG_DATA), CCR_RESETFULL);
3729 outb((ioaddr + EREG_DATA), CCR_RESETFULL);
3730 outb(ioaddr, (GFRCR + uartaddr));
3731 for (j = 0; (j < CCR_MAXWAIT); j++) {
3732 if ((gfrcr = inb(ioaddr + EREG_DATA)) != 0)
3735 if ((j >= CCR_MAXWAIT) || (gfrcr < 0x40) || (gfrcr > 0x60)) {
3736 printf("STALLION: cd1400 not responding, "
3737 "board=%d panel=%d chip=%d\n", panelp->brdnr,
3738 panelp->panelnr, i);
3741 chipmask |= (0x1 << i);
3742 outb(ioaddr, (PPR + uartaddr));
3743 outb((ioaddr + EREG_DATA), PPR_SCALAR);
3747 BRDDISABLE(panelp->brdnr);
3751 /*****************************************************************************/
3752 /* SC26198 HARDWARE FUNCTIONS */
3753 /*****************************************************************************/
3756 * These functions get/set/update the registers of the sc26198 UARTs.
3757 * Access to the sc26198 registers is via an address/data io port pair.
3758 * (Maybe should make this inline...)
3761 static int stl_sc26198getreg(stlport_t *portp, int regnr)
3763 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3764 return(inb(portp->ioaddr + XP_DATA));
3767 static void stl_sc26198setreg(stlport_t *portp, int regnr, int value)
3769 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3770 outb((portp->ioaddr + XP_DATA), value);
3773 static int stl_sc26198updatereg(stlport_t *portp, int regnr, int value)
3775 outb((portp->ioaddr + XP_ADDR), (regnr | portp->uartaddr));
3776 if (inb(portp->ioaddr + XP_DATA) != value) {
3777 outb((portp->ioaddr + XP_DATA), value);
3783 /*****************************************************************************/
3786 * Functions to get and set the sc26198 global registers.
3789 static int stl_sc26198getglobreg(stlport_t *portp, int regnr)
3791 outb((portp->ioaddr + XP_ADDR), regnr);
3792 return(inb(portp->ioaddr + XP_DATA));
3796 static void stl_sc26198setglobreg(stlport_t *portp, int regnr, int value)
3798 outb((portp->ioaddr + XP_ADDR), regnr);
3799 outb((portp->ioaddr + XP_DATA), value);
3803 /*****************************************************************************/
3806 * Inbitialize the UARTs in a panel. We don't care what sort of board
3807 * these ports are on - since the port io registers are almost
3808 * identical when dealing with ports.
3811 static int stl_sc26198panelinit(stlbrd_t *brdp, stlpanel_t *panelp)
3814 int nrchips, ioaddr;
3817 printf("stl_sc26198panelinit(brdp=%x,panelp=%x)\n", (int) brdp,
3821 BRDENABLE(panelp->brdnr, panelp->pagenr);
3824 * Check that each chip is present and started up OK.
3827 nrchips = (panelp->nrports + 4) / SC26198_PORTS;
3828 if (brdp->brdtype == BRD_ECHPCI)
3829 outb(brdp->ioctrl, panelp->pagenr);
3831 for (i = 0; (i < nrchips); i++) {
3832 ioaddr = panelp->iobase + (i * 4);
3833 outb((ioaddr + XP_ADDR), SCCR);
3834 outb((ioaddr + XP_DATA), CR_RESETALL);
3835 outb((ioaddr + XP_ADDR), TSTR);
3836 if (inb(ioaddr + XP_DATA) != 0) {
3837 printf("STALLION: sc26198 not responding, "
3838 "board=%d panel=%d chip=%d\n", panelp->brdnr,
3839 panelp->panelnr, i);
3842 chipmask |= (0x1 << i);
3843 outb((ioaddr + XP_ADDR), GCCR);
3844 outb((ioaddr + XP_DATA), GCCR_IVRTYPCHANACK);
3845 outb((ioaddr + XP_ADDR), WDTRCR);
3846 outb((ioaddr + XP_DATA), 0xff);
3849 BRDDISABLE(panelp->brdnr);
3853 /*****************************************************************************/
3856 * Initialize hardware specific port registers.
3859 static void stl_sc26198portinit(stlbrd_t *brdp, stlpanel_t *panelp, stlport_t *portp)
3862 printf("stl_sc26198portinit(brdp=%x,panelp=%x,portp=%x)\n",
3863 (int) brdp, (int) panelp, (int) portp);
3866 if ((brdp == (stlbrd_t *) NULL) || (panelp == (stlpanel_t *) NULL) ||
3867 (portp == (stlport_t *) NULL))
3870 portp->ioaddr = panelp->iobase + ((portp->portnr < 8) ? 0 : 4);
3871 portp->uartaddr = (portp->portnr & 0x07) << 4;
3872 portp->pagenr = panelp->pagenr;
3875 BRDENABLE(portp->brdnr, portp->pagenr);
3876 stl_sc26198setreg(portp, IOPCR, IOPCR_SETSIGS);
3877 BRDDISABLE(portp->brdnr);
3880 /*****************************************************************************/
3883 * Set up the sc26198 registers for a port based on the termios port
3887 static int stl_sc26198setport(stlport_t *portp, struct termios *tiosp)
3889 unsigned char mr0, mr1, mr2, clk;
3890 unsigned char imron, imroff, iopr, ipr;
3894 printf("stl_sc26198setport(portp=%x,tiosp=%x): brdnr=%d portnr=%d\n",
3895 (int) portp, (int) tiosp, portp->brdnr, portp->portnr);
3907 * Set up the RX char ignore mask with those RX error types we
3910 portp->rxignoremsk = 0;
3911 if (tiosp->c_iflag & IGNPAR)
3912 portp->rxignoremsk |= (SR_RXPARITY | SR_RXFRAMING |
3914 if (tiosp->c_iflag & IGNBRK)
3915 portp->rxignoremsk |= SR_RXBREAK;
3917 portp->rxmarkmsk = SR_RXOVERRUN;
3918 if (tiosp->c_iflag & (INPCK | PARMRK))
3919 portp->rxmarkmsk |= (SR_RXPARITY | SR_RXFRAMING);
3920 if (tiosp->c_iflag & BRKINT)
3921 portp->rxmarkmsk |= SR_RXBREAK;
3924 * Go through the char size, parity and stop bits and set all the
3925 * option registers appropriately.
3927 switch (tiosp->c_cflag & CSIZE) {
3942 if (tiosp->c_cflag & CSTOPB)
3947 if (tiosp->c_cflag & PARENB) {
3948 if (tiosp->c_cflag & PARODD)
3949 mr1 |= (MR1_PARENB | MR1_PARODD);
3951 mr1 |= (MR1_PARENB | MR1_PAREVEN);
3956 mr1 |= MR1_ERRBLOCK;
3959 * Set the RX FIFO threshold at 8 chars. This gives a bit of breathing
3960 * space for hardware flow control and the like. This should be set to
3963 mr2 |= MR2_RXFIFOHALF;
3966 * Calculate the baud rate timers. For now we will just assume that
3967 * the input and output baud are the same. The sc26198 has a fixed
3968 * baud rate table, so only discrete baud rates possible.
3970 if (tiosp->c_ispeed == 0)
3971 tiosp->c_ispeed = tiosp->c_ospeed;
3972 if ((tiosp->c_ospeed < 0) || (tiosp->c_ospeed > SC26198_MAXBAUD))
3975 if (tiosp->c_ospeed > 0) {
3976 for (clk = 0; (clk < SC26198_NRBAUDS); clk++) {
3977 if (tiosp->c_ospeed <= sc26198_baudtable[clk])
3983 * Check what form of modem signaling is required and set it up.
3985 if ((tiosp->c_cflag & CLOCAL) == 0) {
3986 iopr |= IOPR_DCDCOS;
3991 * Setup sc26198 enhanced modes if we can. In particular we want to
3992 * handle as much of the flow control as possible automatically. As
3993 * well as saving a few CPU cycles it will also greatly improve flow
3994 * control reliability.
3996 if (tiosp->c_iflag & IXON) {
3997 mr0 |= MR0_SWFTX | MR0_SWFT;
3998 imron |= IR_XONXOFF;
4000 imroff |= IR_XONXOFF;
4003 if (tiosp->c_iflag & IXOFF)
4007 if (tiosp->c_cflag & CCTS_OFLOW)
4009 if (tiosp->c_cflag & CRTS_IFLOW)
4013 * All sc26198 register values calculated so go through and set
4018 printf("SETPORT: portnr=%d panelnr=%d brdnr=%d\n", portp->portnr,
4019 portp->panelnr, portp->brdnr);
4020 printf(" mr0=%x mr1=%x mr2=%x clk=%x\n", mr0, mr1, mr2, clk);
4021 printf(" iopr=%x imron=%x imroff=%x\n", iopr, imron, imroff);
4022 printf(" schr1=%x schr2=%x schr3=%x schr4=%x\n",
4023 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP],
4024 tiosp->c_cc[VSTART], tiosp->c_cc[VSTOP]);
4028 BRDENABLE(portp->brdnr, portp->pagenr);
4029 stl_sc26198setreg(portp, IMR, 0);
4030 stl_sc26198updatereg(portp, MR0, mr0);
4031 stl_sc26198updatereg(portp, MR1, mr1);
4032 stl_sc26198setreg(portp, SCCR, CR_RXERRBLOCK);
4033 stl_sc26198updatereg(portp, MR2, mr2);
4034 iopr = (stl_sc26198getreg(portp, IOPIOR) & ~IPR_CHANGEMASK) | iopr;
4035 if (tiosp->c_ospeed == 0) {
4039 stl_sc26198setreg(portp, TXCSR, clk);
4040 stl_sc26198setreg(portp, RXCSR, clk);
4042 stl_sc26198updatereg(portp, IOPIOR, iopr);
4043 stl_sc26198setreg(portp, XONCR, tiosp->c_cc[VSTART]);
4044 stl_sc26198setreg(portp, XOFFCR, tiosp->c_cc[VSTOP]);
4045 ipr = stl_sc26198getreg(portp, IPR);
4047 portp->sigs &= ~TIOCM_CD;
4049 portp->sigs |= TIOCM_CD;
4050 portp->imr = (portp->imr & ~imroff) | imron;
4051 stl_sc26198setreg(portp, IMR, portp->imr);
4052 BRDDISABLE(portp->brdnr);
4053 portp->state &= ~(ASY_RTSFLOWMODE | ASY_CTSFLOWMODE);
4054 portp->state |= ((tiosp->c_cflag & CRTS_IFLOW) ? ASY_RTSFLOWMODE : 0);
4055 portp->state |= ((tiosp->c_cflag & CCTS_OFLOW) ? ASY_CTSFLOWMODE : 0);
4056 stl_ttyoptim(portp, tiosp);
4062 /*****************************************************************************/
4065 * Set the state of the DTR and RTS signals.
4068 static void stl_sc26198setsignals(stlport_t *portp, int dtr, int rts)
4070 unsigned char iopioron, iopioroff;
4074 printf("stl_sc26198setsignals(portp=%x,dtr=%d,rts=%d)\n",
4075 (int) portp, dtr, rts);
4081 iopioroff |= IPR_DTR;
4083 iopioron |= IPR_DTR;
4085 iopioroff |= IPR_RTS;
4087 iopioron |= IPR_RTS;
4090 BRDENABLE(portp->brdnr, portp->pagenr);
4091 if ((rts >= 0) && (portp->tty.t_cflag & CRTS_IFLOW)) {
4093 stl_sc26198setreg(portp, MR1,
4094 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4095 portp->stats.rxrtsoff++;
4097 stl_sc26198setreg(portp, MR1,
4098 (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS));
4099 portp->stats.rxrtson++;
4102 stl_sc26198setreg(portp, IOPIOR,
4103 ((stl_sc26198getreg(portp, IOPIOR) & ~iopioroff) | iopioron));
4104 BRDDISABLE(portp->brdnr);
4108 /*****************************************************************************/
4111 * Return the state of the signals.
4114 static int stl_sc26198getsignals(stlport_t *portp)
4120 printf("stl_sc26198getsignals(portp=%x)\n", (int) portp);
4124 BRDENABLE(portp->brdnr, portp->pagenr);
4125 ipr = stl_sc26198getreg(portp, IPR);
4126 BRDDISABLE(portp->brdnr);
4130 sigs |= (ipr & IPR_DCD) ? 0 : TIOCM_CD;
4131 sigs |= (ipr & IPR_CTS) ? 0 : TIOCM_CTS;
4132 sigs |= (ipr & IPR_DTR) ? 0: TIOCM_DTR;
4133 sigs |= (ipr & IPR_RTS) ? 0: TIOCM_RTS;
4137 /*****************************************************************************/
4140 * Enable/Disable the Transmitter and/or Receiver.
4143 static void stl_sc26198enablerxtx(stlport_t *portp, int rx, int tx)
4149 printf("stl_sc26198enablerxtx(portp=%x,rx=%d,tx=%d)\n",
4150 (int) portp, rx, tx);
4153 ccr = portp->crenable;
4155 ccr &= ~CR_TXENABLE;
4159 ccr &= ~CR_RXENABLE;
4164 BRDENABLE(portp->brdnr, portp->pagenr);
4165 stl_sc26198setreg(portp, SCCR, ccr);
4166 BRDDISABLE(portp->brdnr);
4167 portp->crenable = ccr;
4171 /*****************************************************************************/
4174 * Start/stop the Transmitter and/or Receiver.
4177 static void stl_sc26198startrxtx(stlport_t *portp, int rx, int tx)
4183 printf("stl_sc26198startrxtx(portp=%x,rx=%d,tx=%d)\n",
4184 (int) portp, rx, tx);
4193 imr &= ~(IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG);
4195 imr |= IR_RXRDY | IR_RXBREAK | IR_RXWATCHDOG;
4198 BRDENABLE(portp->brdnr, portp->pagenr);
4199 stl_sc26198setreg(portp, IMR, imr);
4200 BRDDISABLE(portp->brdnr);
4203 portp->state |= ASY_TXBUSY;
4204 portp->tty.t_state |= TS_BUSY;
4209 /*****************************************************************************/
4212 * Disable all interrupts from this port.
4215 static void stl_sc26198disableintrs(stlport_t *portp)
4220 printf("stl_sc26198disableintrs(portp=%x)\n", (int) portp);
4224 BRDENABLE(portp->brdnr, portp->pagenr);
4226 stl_sc26198setreg(portp, IMR, 0);
4227 BRDDISABLE(portp->brdnr);
4231 /*****************************************************************************/
4233 static void stl_sc26198sendbreak(stlport_t *portp, long len)
4238 printf("stl_sc26198sendbreak(portp=%x,len=%d)\n",
4239 (int) portp, (int) len);
4243 BRDENABLE(portp->brdnr, portp->pagenr);
4245 stl_sc26198setreg(portp, SCCR, CR_TXSTARTBREAK);
4246 portp->stats.txbreaks++;
4248 stl_sc26198setreg(portp, SCCR, CR_TXSTOPBREAK);
4250 BRDDISABLE(portp->brdnr);
4254 /*****************************************************************************/
4257 * Take flow control actions...
4260 static void stl_sc26198sendflow(stlport_t *portp, int hw, int sw)
4266 printf("stl_sc26198sendflow(portp=%x,hw=%d,sw=%d)\n",
4267 (int) portp, hw, sw);
4270 if (portp == (stlport_t *) NULL)
4274 BRDENABLE(portp->brdnr, portp->pagenr);
4277 mr0 = stl_sc26198getreg(portp, MR0);
4278 stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX));
4280 stl_sc26198setreg(portp, SCCR, CR_TXSENDXOFF);
4282 portp->stats.rxxoff++;
4284 stl_sc26198setreg(portp, SCCR, CR_TXSENDXON);
4286 portp->stats.rxxon++;
4288 stl_sc26198wait(portp);
4289 stl_sc26198setreg(portp, MR0, mr0);
4293 portp->state |= ASY_RTSFLOW;
4294 stl_sc26198setreg(portp, MR1,
4295 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4296 stl_sc26198setreg(portp, IOPIOR,
4297 (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS));
4298 portp->stats.rxrtsoff++;
4299 } else if (hw > 0) {
4300 portp->state &= ~ASY_RTSFLOW;
4301 stl_sc26198setreg(portp, MR1,
4302 (stl_sc26198getreg(portp, MR1) | MR1_AUTORTS));
4303 stl_sc26198setreg(portp, IOPIOR,
4304 (stl_sc26198getreg(portp, IOPIOR) | IOPR_RTS));
4305 portp->stats.rxrtson++;
4308 BRDDISABLE(portp->brdnr);
4312 /*****************************************************************************/
4315 * Return the current state of data flow on this port. This is only
4316 * really interresting when determining if data has fully completed
4317 * transmission or not... The sc26198 interrupt scheme cannot
4318 * determine when all data has actually drained, so we need to
4319 * check the port statusy register to be sure.
4322 static int stl_sc26198datastate(stlport_t *portp)
4328 printf("stl_sc26198datastate(portp=%x)\n", (int) portp);
4331 if (portp == (stlport_t *) NULL)
4333 if (portp->state & ASY_TXBUSY)
4337 BRDENABLE(portp->brdnr, portp->pagenr);
4338 sr = stl_sc26198getreg(portp, SR);
4339 BRDDISABLE(portp->brdnr);
4342 return((sr & SR_TXEMPTY) ? 0 : 1);
4345 /*****************************************************************************/
4347 static void stl_sc26198flush(stlport_t *portp, int flag)
4352 printf("stl_sc26198flush(portp=%x,flag=%x)\n", (int) portp, flag);
4355 if (portp == (stlport_t *) NULL)
4359 BRDENABLE(portp->brdnr, portp->pagenr);
4360 if (flag & FWRITE) {
4361 stl_sc26198setreg(portp, SCCR, CR_TXRESET);
4362 stl_sc26198setreg(portp, SCCR, portp->crenable);
4365 while (stl_sc26198getreg(portp, SR) & SR_RXRDY)
4366 stl_sc26198getreg(portp, RXFIFO);
4368 BRDDISABLE(portp->brdnr);
4372 /*****************************************************************************/
4375 * If we are TX flow controlled and in IXANY mode then we may
4376 * need to unflow control here. We gotta do this because of the
4377 * automatic flow control modes of the sc26198 - which downs't
4378 * support any concept of an IXANY mode.
4381 static void stl_sc26198txunflow(stlport_t *portp)
4385 mr0 = stl_sc26198getreg(portp, MR0);
4386 stl_sc26198setreg(portp, MR0, (mr0 & ~MR0_SWFRXTX));
4387 stl_sc26198setreg(portp, SCCR, CR_HOSTXON);
4388 stl_sc26198setreg(portp, MR0, mr0);
4389 portp->state &= ~ASY_TXFLOWED;
4392 /*****************************************************************************/
4395 * Delay for a small amount of time, to give the sc26198 a chance
4396 * to process a command...
4399 static void stl_sc26198wait(stlport_t *portp)
4404 printf("stl_sc26198wait(portp=%x)\n", (int) portp);
4407 if (portp == (stlport_t *) NULL)
4410 for (i = 0; (i < 20); i++)
4411 stl_sc26198getglobreg(portp, TSTR);
4414 /*****************************************************************************/
4417 * Transmit interrupt handler. This has gotta be fast! Handling TX
4418 * chars is pretty simple, stuff as many as possible from the TX buffer
4419 * into the sc26198 FIFO.
4422 static __inline void stl_sc26198txisr(stlport_t *portp)
4424 unsigned int ioaddr;
4430 printf("stl_sc26198txisr(portp=%x)\n", (int) portp);
4433 ioaddr = portp->ioaddr;
4435 head = portp->tx.head;
4436 tail = portp->tx.tail;
4437 len = (head >= tail) ? (head - tail) : (STL_TXBUFSIZE - (tail - head));
4438 if ((len == 0) || ((len < STL_TXBUFLOW) &&
4439 ((portp->state & ASY_TXLOW) == 0))) {
4440 portp->state |= ASY_TXLOW;
4445 outb((ioaddr + XP_ADDR), (MR0 | portp->uartaddr));
4446 mr0 = inb(ioaddr + XP_DATA);
4447 if ((mr0 & MR0_TXMASK) == MR0_TXEMPTY) {
4448 portp->imr &= ~IR_TXRDY;
4449 outb((ioaddr + XP_ADDR), (IMR | portp->uartaddr));
4450 outb((ioaddr + XP_DATA), portp->imr);
4451 portp->state |= ASY_TXEMPTY;
4452 portp->state &= ~ASY_TXBUSY;
4454 mr0 |= ((mr0 & ~MR0_TXMASK) | MR0_TXEMPTY);
4455 outb((ioaddr + XP_DATA), mr0);
4458 len = MIN(len, SC26198_TXFIFOSIZE);
4459 portp->stats.txtotal += len;
4460 stlen = MIN(len, (portp->tx.endbuf - tail));
4461 outb((ioaddr + XP_ADDR), GTXFIFO);
4462 outsb((ioaddr + XP_DATA), tail, stlen);
4465 if (tail >= portp->tx.endbuf)
4466 tail = portp->tx.buf;
4468 outsb((ioaddr + XP_DATA), tail, len);
4471 portp->tx.tail = tail;
4475 /*****************************************************************************/
4478 * Receive character interrupt handler. Determine if we have good chars
4479 * or bad chars and then process appropriately. Good chars are easy
4480 * just shove the lot into the RX buffer and set all status byte to 0.
4481 * If a bad RX char then process as required. This routine needs to be
4485 static __inline void stl_sc26198rxisr(stlport_t *portp, unsigned int iack)
4488 printf("stl_sc26198rxisr(portp=%x,iack=%x)\n", (int) portp, iack);
4491 if ((iack & IVR_TYPEMASK) == IVR_RXDATA)
4492 stl_sc26198rxgoodchars(portp);
4494 stl_sc26198rxbadchars(portp);
4497 * If we are TX flow controlled and in IXANY mode then we may need
4498 * to unflow control here. We gotta do this because of the automatic
4499 * flow control modes of the sc26198.
4501 if ((portp->state & ASY_TXFLOWED) && (portp->tty.t_iflag & IXANY))
4502 stl_sc26198txunflow(portp);
4505 /*****************************************************************************/
4508 * Process the good received characters from RX FIFO.
4511 static void stl_sc26198rxgoodchars(stlport_t *portp)
4513 unsigned int ioaddr, len, buflen, stlen;
4517 printf("stl_sc26198rxgoodchars(port=%x)\n", (int) portp);
4520 ioaddr = portp->ioaddr;
4523 * First up, calculate how much room there is in the RX ring queue.
4524 * We also want to keep track of the longest possible copy length,
4525 * this has to allow for the wrapping of the ring queue.
4527 head = portp->rx.head;
4528 tail = portp->rx.tail;
4530 buflen = STL_RXBUFSIZE - (head - tail) - 1;
4531 stlen = portp->rx.endbuf - head;
4533 buflen = tail - head - 1;
4538 * Check if the input buffer is near full. If so then we should take
4539 * some flow control action... It is very easy to do hardware and
4540 * software flow control from here since we have the port selected on
4543 if (buflen <= (STL_RXBUFSIZE - STL_RXBUFHIGH)) {
4544 if (((portp->state & ASY_RTSFLOW) == 0) &&
4545 (portp->state & ASY_RTSFLOWMODE)) {
4546 portp->state |= ASY_RTSFLOW;
4547 stl_sc26198setreg(portp, MR1,
4548 (stl_sc26198getreg(portp, MR1) & ~MR1_AUTORTS));
4549 stl_sc26198setreg(portp, IOPIOR,
4550 (stl_sc26198getreg(portp, IOPIOR) & ~IOPR_RTS));
4551 portp->stats.rxrtsoff++;
4556 * OK we are set, process good data... If the RX ring queue is full
4557 * just chuck the chars - don't leave them in the UART.
4559 outb((ioaddr + XP_ADDR), GIBCR);
4560 len = inb(ioaddr + XP_DATA) + 1;
4562 outb((ioaddr + XP_ADDR), GRXFIFO);
4563 insb((ioaddr + XP_DATA), &stl_unwanted[0], len);
4564 portp->stats.rxlost += len;
4565 portp->stats.rxtotal += len;
4567 len = MIN(len, buflen);
4568 portp->stats.rxtotal += len;
4569 stlen = MIN(len, stlen);
4571 outb((ioaddr + XP_ADDR), GRXFIFO);
4572 insb((ioaddr + XP_DATA), head, stlen);
4574 if (head >= portp->rx.endbuf) {
4575 head = portp->rx.buf;
4577 insb((ioaddr + XP_DATA), head, len);
4583 portp->rx.head = head;
4584 portp->state |= ASY_RXDATA;
4588 /*****************************************************************************/
4591 * Process all characters in the RX FIFO of the UART. Check all char
4592 * status bytes as well, and process as required. We need to check
4593 * all bytes in the FIFO, in case some more enter the FIFO while we
4594 * are here. To get the exact character error type we need to switch
4595 * into CHAR error mode (that is why we need to make sure we empty
4599 static void stl_sc26198rxbadchars(stlport_t *portp)
4602 unsigned int status;
4608 * First up, calculate how much room there is in the RX ring queue.
4609 * We also want to keep track of the longest possible copy length,
4610 * this has to allow for the wrapping of the ring queue.
4612 head = portp->rx.head;
4613 tail = portp->rx.tail;
4614 len = (head >= tail) ? (STL_RXBUFSIZE - (head - tail) - 1) :
4618 * To get the precise error type for each character we must switch
4619 * back into CHAR error mode.
4621 mr1 = stl_sc26198getreg(portp, MR1);
4622 stl_sc26198setreg(portp, MR1, (mr1 & ~MR1_ERRBLOCK));
4624 while ((status = stl_sc26198getreg(portp, SR)) & SR_RXRDY) {
4625 stl_sc26198setreg(portp, SCCR, CR_CLEARRXERR);
4626 ch = stl_sc26198getreg(portp, RXFIFO);
4628 if (status & SR_RXBREAK)
4629 portp->stats.rxbreaks++;
4630 if (status & SR_RXFRAMING)
4631 portp->stats.rxframing++;
4632 if (status & SR_RXPARITY)
4633 portp->stats.rxparity++;
4634 if (status & SR_RXOVERRUN)
4635 portp->stats.rxoverrun++;
4636 if ((portp->rxignoremsk & status) == 0) {
4637 if ((portp->tty.t_state & TS_CAN_BYPASS_L_RINT) &&
4638 ((status & SR_RXFRAMING) ||
4639 ((status & SR_RXPARITY) &&
4640 (portp->tty.t_iflag & INPCK))))
4642 if ((portp->rxmarkmsk & status) == 0)
4645 *(head + STL_RXBUFSIZE) = status;
4647 if (head >= portp->rx.endbuf)
4648 head = portp->rx.buf;
4655 * To get correct interrupt class we must switch back into BLOCK
4658 stl_sc26198setreg(portp, MR1, mr1);
4660 portp->rx.head = head;
4661 portp->state |= ASY_RXDATA;
4665 /*****************************************************************************/
4668 * Other interrupt handler. This includes modem signals, flow
4669 * control actions, etc.
4672 static void stl_sc26198otherisr(stlport_t *portp, unsigned int iack)
4674 unsigned char cir, ipr, xisr;
4677 printf("stl_sc26198otherisr(portp=%x,iack=%x)\n", (int) portp, iack);
4680 cir = stl_sc26198getglobreg(portp, CIR);
4682 switch (cir & CIR_SUBTYPEMASK) {
4684 ipr = stl_sc26198getreg(portp, IPR);
4685 if (ipr & IPR_DCDCHANGE) {
4686 portp->state |= ASY_DCDCHANGE;
4687 portp->stats.modem++;
4691 case CIR_SUBXONXOFF:
4692 xisr = stl_sc26198getreg(portp, XISR);
4693 if (xisr & XISR_RXXONGOT) {
4694 portp->state |= ASY_TXFLOWED;
4695 portp->stats.txxoff++;
4697 if (xisr & XISR_RXXOFFGOT) {
4698 portp->state &= ~ASY_TXFLOWED;
4699 portp->stats.txxon++;
4703 stl_sc26198setreg(portp, SCCR, CR_BREAKRESET);
4704 stl_sc26198rxbadchars(portp);
4711 /*****************************************************************************/
4714 * Interrupt service routine for sc26198 panels.
4717 static void stl_sc26198intr(stlpanel_t *panelp, unsigned int iobase)
4723 * Work around bug in sc26198 chip... Cannot have A6 address
4724 * line of UART high, else iack will be returned as 0.
4726 outb((iobase + 1), 0);
4728 iack = inb(iobase + XP_IACK);
4730 printf("stl_sc26198intr(panelp=%p,iobase=%x): iack=%x\n", panelp, iobase, iack);
4732 portp = panelp->ports[(iack & IVR_CHANMASK) + ((iobase & 0x4) << 1)];
4734 if (iack & IVR_RXDATA)
4735 stl_sc26198rxisr(portp, iack);
4736 else if (iack & IVR_TXDATA)
4737 stl_sc26198txisr(portp);
4739 stl_sc26198otherisr(portp, iack);
4742 /*****************************************************************************/