1515 lines
39 KiB
C
1515 lines
39 KiB
C
/*
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* Copyright (C) 1995 by Pavel Antonov, Moscow, Russia.
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* Copyright (C) 1995 by Andrey A. Chernov, Moscow, Russia.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* SDL Communications Riscom/8 (based on Cirrus Logic CL-CD180) driver
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*
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*/
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#include "rc.h"
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#if NRC > 0
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/*#define RCDEBUG*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/conf.h>
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#include <sys/dkstat.h>
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#include <sys/fcntl.h>
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#include <sys/kernel.h>
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#ifdef DEVFS
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#include <sys/devfsext.h>
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#endif /*DEVFS*/
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#include <machine/clock.h>
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#include <i386/isa/isa_device.h>
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#include <i386/isa/ic/cd180.h>
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#include <i386/isa/rcreg.h>
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/* Prototypes */
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static int rcprobe __P((struct isa_device *));
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static int rcattach __P((struct isa_device *));
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/*-
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* This space intentionally left blank to stop __LINE__ from screwing up
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* regression tests :-(.
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*
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*
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*
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*/
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void rcpoll __P((void));
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#define rcin(port) RC_IN (nec, port)
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#define rcout(port,v) RC_OUT (nec, port, v)
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#define WAITFORCCR(u,c) rc_wait0(nec, (u), (c), __LINE__)
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#define CCRCMD(u,c,cmd) WAITFORCCR((u), (c)); rcout(CD180_CCR, (cmd))
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#define RC_IBUFSIZE 256
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#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE)
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#define RC_OBUFSIZE 512
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#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4)
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#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE)
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#define LOTS_OF_EVENTS 64
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#define RC_FAKEID 0x10
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#define RC_PROBED 1
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#define RC_ATTACHED 2
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#define GET_UNIT(dev) (minor(dev) & 0x3F)
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#define CALLOUT(dev) (minor(dev) & 0x80)
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/* For isa routines */
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struct isa_driver rcdriver = {
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rcprobe, rcattach, "rc"
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};
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static d_open_t rcopen;
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static d_close_t rcclose;
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static d_read_t rcread;
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static d_write_t rcwrite;
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static d_ioctl_t rcioctl;
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static d_stop_t rcstop;
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static d_devtotty_t rcdevtotty;
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#define CDEV_MAJOR 63
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static struct cdevsw rc_cdevsw =
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{ rcopen, rcclose, rcread, rcwrite, /*63*/
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rcioctl, rcstop, noreset, rcdevtotty,/* rc */
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ttpoll, nommap, NULL, "rc", NULL, -1 };
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/* Per-board structure */
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static struct rc_softc {
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u_int rcb_probed; /* 1 - probed, 2 - attached */
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u_int rcb_addr; /* Base I/O addr */
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u_int rcb_unit; /* unit # */
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u_char rcb_dtr; /* DTR status */
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struct rc_chans *rcb_baserc; /* base rc ptr */
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} rc_softc[NRC];
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/* Per-channel structure */
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static struct rc_chans {
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struct rc_softc *rc_rcb; /* back ptr */
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u_short rc_flags; /* Misc. flags */
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int rc_chan; /* Channel # */
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u_char rc_ier; /* intr. enable reg */
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u_char rc_msvr; /* modem sig. status */
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u_char rc_cor2; /* options reg */
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u_char rc_pendcmd; /* special cmd pending */
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u_int rc_dtrwait; /* dtr timeout */
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u_int rc_dcdwaits; /* how many waits DCD in open */
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u_char rc_hotchar; /* end packed optimize */
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struct tty *rc_tp; /* tty struct */
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u_char *rc_iptr; /* Chars input buffer */
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u_char *rc_hiwat; /* hi-water mark */
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u_char *rc_bufend; /* end of buffer */
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u_char *rc_optr; /* ptr in output buf */
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u_char *rc_obufend; /* end of output buf */
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u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */
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u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */
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#ifdef DEVFS
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void *devfs_token;
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#endif
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} rc_chans[NRC * CD180_NCHAN];
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static int rc_scheduled_event = 0;
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/* for pstat -t */
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static struct tty rc_tty[NRC * CD180_NCHAN];
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static const int nrc_tty = NRC * CD180_NCHAN;
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/* Flags */
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#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */
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#define RC_ACTOUT 0x0002 /* Dial-out port active */
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#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */
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#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */
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#define RC_DORXFER 0x0010 /* RXFER event planned */
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#define RC_DOXXFER 0x0020 /* XXFER event planned */
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#define RC_MODCHG 0x0040 /* Modem status changed */
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#define RC_OSUSP 0x0080 /* Output suspended */
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#define RC_OSBUSY 0x0100 /* start() routine in progress */
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#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */
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#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */
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#define RC_SEND_RDY 0x0800 /* ready to send */
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/* Table for translation of RCSR status bits to internal form */
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static int rc_rcsrt[16] = {
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0, TTY_OE, TTY_FE,
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TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE,
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TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI,
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TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE,
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TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE,
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TTY_BI|TTY_PE|TTY_FE|TTY_OE
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};
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/* Static prototypes */
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static void rc_hwreset __P((int, int, unsigned int));
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static int rc_test __P((int, int));
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static void rc_discard_output __P((struct rc_chans *));
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static void rc_hardclose __P((struct rc_chans *));
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static int rc_modctl __P((struct rc_chans *, int, int));
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static void rc_start __P((struct tty *));
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static int rc_param __P((struct tty *, struct termios *));
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static void rc_reinit __P((struct rc_softc *));
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#ifdef RCDEBUG
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static void printrcflags();
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#endif
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static timeout_t rc_dtrwakeup;
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static timeout_t rc_wakeup;
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static void disc_optim __P((struct tty *tp, struct termios *t, struct rc_chans *));
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static void rc_wait0 __P((int nec, int unit, int chan, int line));
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/**********************************************/
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/* Quick device probing */
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static int
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rcprobe(dvp)
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struct isa_device *dvp;
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{
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int irq = ffs(dvp->id_irq) - 1;
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register int nec = dvp->id_iobase;
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if (dvp->id_unit > NRC)
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return 0;
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if (!RC_VALIDADDR(nec)) {
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printf("rc%d: illegal base address %x\n", nec);
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return 0;
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}
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if (!RC_VALIDIRQ(irq)) {
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printf("rc%d: illegal IRQ value %d\n", irq);
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return 0;
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}
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rcout(CD180_PPRL, 0x22); /* Random values to Prescale reg. */
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rcout(CD180_PPRH, 0x11);
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if (rcin(CD180_PPRL) != 0x22 || rcin(CD180_PPRH) != 0x11)
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return 0;
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/* Now, test the board more thoroughly, with diagnostic */
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if (rc_test(nec, dvp->id_unit))
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return 0;
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rc_softc[dvp->id_unit].rcb_probed = RC_PROBED;
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return 0xF;
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}
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static int
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rcattach(dvp)
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struct isa_device *dvp;
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{
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register int chan, nec = dvp->id_iobase;
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struct rc_softc *rcb = &rc_softc[dvp->id_unit];
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struct rc_chans *rc = &rc_chans[dvp->id_unit * CD180_NCHAN];
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static int rc_wakeup_started = 0;
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struct tty *tp;
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/* Thorooughly test the device */
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if (rcb->rcb_probed != RC_PROBED)
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return 0;
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rcb->rcb_addr = nec;
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rcb->rcb_dtr = 0;
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rcb->rcb_baserc = rc;
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/*rcb->rcb_chipid = 0x10 + dvp->id_unit;*/
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printf("rc%d: %d chans, firmware rev. %c\n", dvp->id_unit,
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CD180_NCHAN, (rcin(CD180_GFRCR) & 0xF) + 'A');
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for (chan = 0; chan < CD180_NCHAN; chan++, rc++) {
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rc->rc_rcb = rcb;
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rc->rc_chan = chan;
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rc->rc_iptr = rc->rc_ibuf;
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rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
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rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
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rc->rc_flags = rc->rc_ier = rc->rc_msvr = 0;
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rc->rc_cor2 = rc->rc_pendcmd = 0;
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rc->rc_optr = rc->rc_obufend = rc->rc_obuf;
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rc->rc_dtrwait = 3 * hz;
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rc->rc_dcdwaits= 0;
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rc->rc_hotchar = 0;
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tp = rc->rc_tp = &rc_tty[chan];
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ttychars(tp);
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tp->t_lflag = tp->t_iflag = tp->t_oflag = 0;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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#ifdef DEVFS
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/* FIX THIS to reflect real devices */
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rc->devfs_token =
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devfs_add_devswf(&rc_cdevsw,
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(dvp->id_unit * CD180_NCHAN) + chan,
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DV_CHR, 0, 0, 0600, "rc%d.%d",
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dvp->id_unit, chan);
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#endif
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}
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rcb->rcb_probed = RC_ATTACHED;
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if (!rc_wakeup_started) {
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rc_wakeup((void *)NULL);
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rc_wakeup_started = 0;
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}
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return 1;
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}
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/* RC interrupt handling */
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void rcintr(unit)
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int unit;
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{
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register struct rc_softc *rcb = &rc_softc[unit];
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register struct rc_chans *rc;
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register int nec, resid;
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register u_char val, iack, bsr, ucnt, *optr;
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int good_data, t_state;
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if (rcb->rcb_probed != RC_ATTACHED) {
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printf("rc%d: bogus interrupt\n", unit);
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return;
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}
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nec = rcb->rcb_addr;
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bsr = ~(rcin(RC_BSR));
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if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) {
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printf("rc%d: extra interrupt\n", unit);
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rcout(CD180_EOIR, 0);
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return;
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}
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while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) {
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#ifdef RCDEBUG_DETAILED
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printf("rc%d: intr (%02x) %s%s%s%s\n", unit, bsr,
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(bsr & RC_BSR_TOUT)?"TOUT ":"",
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(bsr & RC_BSR_RXINT)?"RXINT ":"",
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(bsr & RC_BSR_TXINT)?"TXINT ":"",
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(bsr & RC_BSR_MOINT)?"MOINT":"");
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#endif
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if (bsr & RC_BSR_TOUT) {
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printf("rc%d: hardware failure, reset board\n", unit);
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rcout(RC_CTOUT, 0);
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rc_reinit(rcb);
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return;
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}
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if (bsr & RC_BSR_RXINT) {
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iack = rcin(RC_PILR_RX);
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good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID));
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if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) {
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printf("rc%d: fake rxint: %02x\n", unit, iack);
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goto more_intrs;
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}
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rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH);
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t_state = rc->rc_tp->t_state;
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/* Do RTS flow control stuff */
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if ( (rc->rc_flags & RC_RTSFLOW)
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|| !(t_state & TS_ISOPEN)
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) {
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if ( ( !(t_state & TS_ISOPEN)
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|| (t_state & TS_TBLOCK)
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)
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&& (rc->rc_msvr & MSVR_RTS)
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)
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rcout(CD180_MSVR,
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rc->rc_msvr &= ~MSVR_RTS);
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else if (!(rc->rc_msvr & MSVR_RTS))
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rcout(CD180_MSVR,
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rc->rc_msvr |= MSVR_RTS);
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}
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ucnt = rcin(CD180_RDCR) & 0xF;
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resid = 0;
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if (t_state & TS_ISOPEN) {
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/* check for input buffer overflow */
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if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) {
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resid = ucnt;
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ucnt = rc->rc_bufend - rc->rc_iptr;
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resid -= ucnt;
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if (!(rc->rc_flags & RC_WAS_BUFOVFL)) {
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rc->rc_flags |= RC_WAS_BUFOVFL;
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rc_scheduled_event++;
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}
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}
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optr = rc->rc_iptr;
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/* check foor good data */
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if (good_data) {
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while (ucnt-- > 0) {
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val = rcin(CD180_RDR);
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optr[0] = val;
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optr[INPUT_FLAGS_SHIFT] = 0;
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optr++;
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rc_scheduled_event++;
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if (val != 0 && val == rc->rc_hotchar)
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setsofttty();
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}
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} else {
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/* Store also status data */
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while (ucnt-- > 0) {
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iack = rcin(CD180_RCSR);
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if (iack & RCSR_Timeout)
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break;
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if ( (iack & RCSR_OE)
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&& !(rc->rc_flags & RC_WAS_SILOVFL)) {
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rc->rc_flags |= RC_WAS_SILOVFL;
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rc_scheduled_event++;
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}
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val = rcin(CD180_RDR);
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/*
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Don't store PE if IGNPAR and BREAK if IGNBRK,
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this hack allows "raw" tty optimization
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works even if IGN* is set.
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*/
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if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break))
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|| (!(iack & (RCSR_PE|RCSR_FE))
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|| !(rc->rc_tp->t_iflag & IGNPAR))
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&& (!(iack & RCSR_Break)
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|| !(rc->rc_tp->t_iflag & IGNBRK))) {
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if ( (iack & (RCSR_PE|RCSR_FE))
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&& (t_state & TS_CAN_BYPASS_L_RINT)
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&& ((iack & RCSR_FE)
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|| (iack & RCSR_PE)
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&& (rc->rc_tp->t_iflag & INPCK)))
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val = 0;
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else if (val != 0 && val == rc->rc_hotchar)
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setsofttty();
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optr[0] = val;
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optr[INPUT_FLAGS_SHIFT] = iack;
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optr++;
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rc_scheduled_event++;
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}
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}
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}
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rc->rc_iptr = optr;
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rc->rc_flags |= RC_DORXFER;
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} else
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resid = ucnt;
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/* Clear FIFO if necessary */
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while (resid-- > 0) {
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if (!good_data)
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iack = rcin(CD180_RCSR);
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else
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iack = 0;
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if (iack & RCSR_Timeout)
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break;
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(void) rcin(CD180_RDR);
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}
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goto more_intrs;
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}
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if (bsr & RC_BSR_MOINT) {
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iack = rcin(RC_PILR_MODEM);
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if (iack != (GIVR_IT_MSCI | RC_FAKEID)) {
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printf("rc%d: fake moint: %02x\n", unit, iack);
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goto more_intrs;
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}
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rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH);
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iack = rcin(CD180_MCR);
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rc->rc_msvr = rcin(CD180_MSVR);
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rcout(CD180_MCR, 0);
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#ifdef RCDEBUG
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printrcflags(rc, "moint");
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#endif
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if (rc->rc_flags & RC_CTSFLOW) {
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if (rc->rc_msvr & MSVR_CTS)
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rc->rc_flags |= RC_SEND_RDY;
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else
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rc->rc_flags &= ~RC_SEND_RDY;
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} else
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rc->rc_flags |= RC_SEND_RDY;
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if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) {
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rc_scheduled_event += LOTS_OF_EVENTS;
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rc->rc_flags |= RC_MODCHG;
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setsofttty();
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}
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goto more_intrs;
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}
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if (bsr & RC_BSR_TXINT) {
|
|
iack = rcin(RC_PILR_TX);
|
|
if (iack != (GIVR_IT_TDI | RC_FAKEID)) {
|
|
printf("rc%d: fake txint: %02x\n", unit, iack);
|
|
goto more_intrs;
|
|
}
|
|
rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH);
|
|
if ( (rc->rc_flags & RC_OSUSP)
|
|
|| !(rc->rc_flags & RC_SEND_RDY)
|
|
)
|
|
goto more_intrs;
|
|
/* Handle breaks and other stuff */
|
|
if (rc->rc_pendcmd) {
|
|
rcout(CD180_COR2, rc->rc_cor2 |= COR2_ETC);
|
|
rcout(CD180_TDR, CD180_C_ESC);
|
|
rcout(CD180_TDR, rc->rc_pendcmd);
|
|
rcout(CD180_COR2, rc->rc_cor2 &= ~COR2_ETC);
|
|
rc->rc_pendcmd = 0;
|
|
goto more_intrs;
|
|
}
|
|
optr = rc->rc_optr;
|
|
resid = rc->rc_obufend - optr;
|
|
if (resid > CD180_NFIFO)
|
|
resid = CD180_NFIFO;
|
|
while (resid-- > 0)
|
|
rcout(CD180_TDR, *optr++);
|
|
rc->rc_optr = optr;
|
|
|
|
/* output completed? */
|
|
if (optr >= rc->rc_obufend) {
|
|
rcout(CD180_IER, rc->rc_ier &= ~IER_TxRdy);
|
|
#ifdef RCDEBUG
|
|
printf("rc%d/%d: output completed\n", unit, rc->rc_chan);
|
|
#endif
|
|
if (!(rc->rc_flags & RC_DOXXFER)) {
|
|
rc_scheduled_event += LOTS_OF_EVENTS;
|
|
rc->rc_flags |= RC_DOXXFER;
|
|
setsofttty();
|
|
}
|
|
}
|
|
}
|
|
more_intrs:
|
|
rcout(CD180_EOIR, 0); /* end of interrupt */
|
|
rcout(RC_CTOUT, 0);
|
|
bsr = ~(rcin(RC_BSR));
|
|
}
|
|
}
|
|
|
|
/* Feed characters to output buffer */
|
|
static void rc_start(tp)
|
|
register struct tty *tp;
|
|
{
|
|
register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)];
|
|
register int nec = rc->rc_rcb->rcb_addr, s;
|
|
|
|
if (rc->rc_flags & RC_OSBUSY)
|
|
return;
|
|
s = spltty();
|
|
rc->rc_flags |= RC_OSBUSY;
|
|
disable_intr();
|
|
if (tp->t_state & TS_TTSTOP)
|
|
rc->rc_flags |= RC_OSUSP;
|
|
else
|
|
rc->rc_flags &= ~RC_OSUSP;
|
|
/* Do RTS flow control stuff */
|
|
if ( (rc->rc_flags & RC_RTSFLOW)
|
|
&& (tp->t_state & TS_TBLOCK)
|
|
&& (rc->rc_msvr & MSVR_RTS)
|
|
) {
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
rcout(CD180_MSVR, rc->rc_msvr &= ~MSVR_RTS);
|
|
} else if (!(rc->rc_msvr & MSVR_RTS)) {
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
rcout(CD180_MSVR, rc->rc_msvr |= MSVR_RTS);
|
|
}
|
|
enable_intr();
|
|
if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
|
|
goto out;
|
|
#ifdef RCDEBUG
|
|
printrcflags(rc, "rcstart");
|
|
#endif
|
|
ttwwakeup(tp);
|
|
#ifdef RCDEBUG
|
|
printf("rcstart: outq = %d obuf = %d\n",
|
|
tp->t_outq.c_cc, rc->rc_obufend - rc->rc_optr);
|
|
#endif
|
|
if (tp->t_state & TS_BUSY)
|
|
goto out; /* output still in progress ... */
|
|
|
|
if (tp->t_outq.c_cc > 0) {
|
|
u_int ocnt;
|
|
|
|
tp->t_state |= TS_BUSY;
|
|
ocnt = q_to_b(&tp->t_outq, rc->rc_obuf, sizeof rc->rc_obuf);
|
|
disable_intr();
|
|
rc->rc_optr = rc->rc_obuf;
|
|
rc->rc_obufend = rc->rc_optr + ocnt;
|
|
enable_intr();
|
|
if (!(rc->rc_ier & IER_TxRdy)) {
|
|
#ifdef RCDEBUG
|
|
printf("rc%d/%d: rcstart enable txint\n", rc->rc_rcb->rcb_unit, rc->rc_chan);
|
|
#endif
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
rcout(CD180_IER, rc->rc_ier |= IER_TxRdy);
|
|
}
|
|
}
|
|
out:
|
|
rc->rc_flags &= ~RC_OSBUSY;
|
|
(void) splx(s);
|
|
}
|
|
|
|
/* Handle delayed events. */
|
|
void rcpoll()
|
|
{
|
|
register struct rc_chans *rc;
|
|
register struct rc_softc *rcb;
|
|
register u_char *tptr, *eptr;
|
|
register struct tty *tp;
|
|
register int chan, icnt, nec, unit;
|
|
|
|
if (rc_scheduled_event == 0)
|
|
return;
|
|
repeat:
|
|
for (unit = 0; unit < NRC; unit++) {
|
|
rcb = &rc_softc[unit];
|
|
rc = rcb->rcb_baserc;
|
|
nec = rc->rc_rcb->rcb_addr;
|
|
for (chan = 0; chan < CD180_NCHAN; rc++, chan++) {
|
|
tp = rc->rc_tp;
|
|
#ifdef RCDEBUG
|
|
if (rc->rc_flags & (RC_DORXFER|RC_DOXXFER|RC_MODCHG|
|
|
RC_WAS_BUFOVFL|RC_WAS_SILOVFL))
|
|
printrcflags(rc, "rcevent");
|
|
#endif
|
|
if (rc->rc_flags & RC_WAS_BUFOVFL) {
|
|
disable_intr();
|
|
rc->rc_flags &= ~RC_WAS_BUFOVFL;
|
|
rc_scheduled_event--;
|
|
enable_intr();
|
|
printf("rc%d/%d: interrupt-level buffer overflow\n",
|
|
unit, chan);
|
|
}
|
|
if (rc->rc_flags & RC_WAS_SILOVFL) {
|
|
disable_intr();
|
|
rc->rc_flags &= ~RC_WAS_SILOVFL;
|
|
rc_scheduled_event--;
|
|
enable_intr();
|
|
printf("rc%d/%d: silo overflow\n",
|
|
unit, chan);
|
|
}
|
|
if (rc->rc_flags & RC_MODCHG) {
|
|
disable_intr();
|
|
rc->rc_flags &= ~RC_MODCHG;
|
|
rc_scheduled_event -= LOTS_OF_EVENTS;
|
|
enable_intr();
|
|
(*linesw[tp->t_line].l_modem)(tp, !!(rc->rc_msvr & MSVR_CD));
|
|
}
|
|
if (rc->rc_flags & RC_DORXFER) {
|
|
disable_intr();
|
|
rc->rc_flags &= ~RC_DORXFER;
|
|
eptr = rc->rc_iptr;
|
|
if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE])
|
|
tptr = &rc->rc_ibuf[RC_IBUFSIZE];
|
|
else
|
|
tptr = rc->rc_ibuf;
|
|
icnt = eptr - tptr;
|
|
if (icnt > 0) {
|
|
if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
|
|
rc->rc_iptr = rc->rc_ibuf;
|
|
rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE];
|
|
rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER];
|
|
} else {
|
|
rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
|
|
rc->rc_bufend = &rc->rc_ibuf[2 * RC_IBUFSIZE];
|
|
rc->rc_hiwat =
|
|
&rc->rc_ibuf[RC_IBUFSIZE + RC_IHIGHWATER];
|
|
}
|
|
if ( (rc->rc_flags & RC_RTSFLOW)
|
|
&& (tp->t_state & TS_ISOPEN)
|
|
&& !(tp->t_state & TS_TBLOCK)
|
|
&& !(rc->rc_msvr & MSVR_RTS)
|
|
) {
|
|
rcout(CD180_CAR, chan);
|
|
rcout(CD180_MSVR,
|
|
rc->rc_msvr |= MSVR_RTS);
|
|
}
|
|
rc_scheduled_event -= icnt;
|
|
}
|
|
enable_intr();
|
|
|
|
if (icnt <= 0 || !(tp->t_state & TS_ISOPEN))
|
|
goto done1;
|
|
|
|
if ( (tp->t_state & TS_CAN_BYPASS_L_RINT)
|
|
&& !(tp->t_state & TS_LOCAL)) {
|
|
if ((tp->t_rawq.c_cc + icnt) >= RB_I_HIGH_WATER
|
|
&& ((rc->rc_flags & RC_RTSFLOW) || (tp->t_iflag & IXOFF))
|
|
&& !(tp->t_state & TS_TBLOCK))
|
|
ttyblock(tp);
|
|
tk_nin += icnt;
|
|
tk_rawcc += icnt;
|
|
tp->t_rawcc += icnt;
|
|
if (b_to_q(tptr, icnt, &tp->t_rawq))
|
|
printf("rc%d/%d: tty-level buffer overflow\n",
|
|
unit, chan);
|
|
ttwakeup(tp);
|
|
if ((tp->t_state & TS_TTSTOP) && ((tp->t_iflag & IXANY)
|
|
|| (tp->t_cc[VSTART] == tp->t_cc[VSTOP]))) {
|
|
tp->t_state &= ~TS_TTSTOP;
|
|
tp->t_lflag &= ~FLUSHO;
|
|
rc_start(tp);
|
|
}
|
|
} else {
|
|
for (; tptr < eptr; tptr++)
|
|
(*linesw[tp->t_line].l_rint)
|
|
(tptr[0] |
|
|
rc_rcsrt[tptr[INPUT_FLAGS_SHIFT] & 0xF], tp);
|
|
}
|
|
done1: ;
|
|
}
|
|
if (rc->rc_flags & RC_DOXXFER) {
|
|
disable_intr();
|
|
rc_scheduled_event -= LOTS_OF_EVENTS;
|
|
rc->rc_flags &= ~RC_DOXXFER;
|
|
rc->rc_tp->t_state &= ~TS_BUSY;
|
|
enable_intr();
|
|
(*linesw[tp->t_line].l_start)(tp);
|
|
}
|
|
}
|
|
if (rc_scheduled_event == 0)
|
|
break;
|
|
}
|
|
if (rc_scheduled_event >= LOTS_OF_EVENTS)
|
|
goto repeat;
|
|
}
|
|
|
|
static void
|
|
rcstop(tp, rw)
|
|
register struct tty *tp;
|
|
int rw;
|
|
{
|
|
register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)];
|
|
u_char *tptr, *eptr;
|
|
|
|
#ifdef RCDEBUG
|
|
printf("rc%d/%d: rcstop %s%s\n", rc->rc_rcb->rcb_unit, rc->rc_chan,
|
|
(rw & FWRITE)?"FWRITE ":"", (rw & FREAD)?"FREAD":"");
|
|
#endif
|
|
if (rw & FWRITE)
|
|
rc_discard_output(rc);
|
|
disable_intr();
|
|
if (rw & FREAD) {
|
|
rc->rc_flags &= ~RC_DORXFER;
|
|
eptr = rc->rc_iptr;
|
|
if (rc->rc_bufend == &rc->rc_ibuf[2 * RC_IBUFSIZE]) {
|
|
tptr = &rc->rc_ibuf[RC_IBUFSIZE];
|
|
rc->rc_iptr = &rc->rc_ibuf[RC_IBUFSIZE];
|
|
} else {
|
|
tptr = rc->rc_ibuf;
|
|
rc->rc_iptr = rc->rc_ibuf;
|
|
}
|
|
rc_scheduled_event -= eptr - tptr;
|
|
}
|
|
if (tp->t_state & TS_TTSTOP)
|
|
rc->rc_flags |= RC_OSUSP;
|
|
else
|
|
rc->rc_flags &= ~RC_OSUSP;
|
|
enable_intr();
|
|
}
|
|
|
|
static int
|
|
rcopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag, mode;
|
|
struct proc *p;
|
|
{
|
|
register struct rc_chans *rc;
|
|
register struct tty *tp;
|
|
int unit, nec, s, error = 0;
|
|
|
|
unit = GET_UNIT(dev);
|
|
if (unit >= NRC * CD180_NCHAN)
|
|
return ENXIO;
|
|
if (rc_softc[unit / CD180_NCHAN].rcb_probed != RC_ATTACHED)
|
|
return ENXIO;
|
|
rc = &rc_chans[unit];
|
|
tp = rc->rc_tp;
|
|
nec = rc->rc_rcb->rcb_addr;
|
|
#ifdef RCDEBUG
|
|
printf("rc%d/%d: rcopen: dev %x\n", rc->rc_rcb->rcb_unit, unit, dev);
|
|
#endif
|
|
s = spltty();
|
|
|
|
again:
|
|
while (rc->rc_flags & RC_DTR_OFF) {
|
|
error = tsleep(&(rc->rc_dtrwait), TTIPRI | PCATCH, "rcdtr", 0);
|
|
if (error != 0)
|
|
goto out;
|
|
}
|
|
if (tp->t_state & TS_ISOPEN) {
|
|
if (CALLOUT(dev)) {
|
|
if (!(rc->rc_flags & RC_ACTOUT)) {
|
|
error = EBUSY;
|
|
goto out;
|
|
}
|
|
} else {
|
|
if (rc->rc_flags & RC_ACTOUT) {
|
|
if (flag & O_NONBLOCK) {
|
|
error = EBUSY;
|
|
goto out;
|
|
}
|
|
if (error = tsleep(&rc->rc_rcb,
|
|
TTIPRI|PCATCH, "rcbi", 0))
|
|
goto out;
|
|
goto again;
|
|
}
|
|
}
|
|
if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {
|
|
error = EBUSY;
|
|
goto out;
|
|
}
|
|
} else {
|
|
tp->t_oproc = rc_start;
|
|
tp->t_param = rc_param;
|
|
tp->t_dev = dev;
|
|
|
|
if (CALLOUT(dev))
|
|
tp->t_cflag |= CLOCAL;
|
|
else
|
|
tp->t_cflag &= ~CLOCAL;
|
|
|
|
error = rc_param(tp, &tp->t_termios);
|
|
if (error)
|
|
goto out;
|
|
(void) rc_modctl(rc, TIOCM_RTS|TIOCM_DTR, DMSET);
|
|
|
|
ttsetwater(tp);
|
|
|
|
if ((rc->rc_msvr & MSVR_CD) || CALLOUT(dev))
|
|
(*linesw[tp->t_line].l_modem)(tp, 1);
|
|
}
|
|
if (!(tp->t_state & TS_CARR_ON) && !CALLOUT(dev)
|
|
&& !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) {
|
|
rc->rc_dcdwaits++;
|
|
error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "rcdcd", 0);
|
|
rc->rc_dcdwaits--;
|
|
if (error != 0)
|
|
goto out;
|
|
goto again;
|
|
}
|
|
error = (*linesw[tp->t_line].l_open)(dev, tp);
|
|
disc_optim(tp, &tp->t_termios, rc);
|
|
if ((tp->t_state & TS_ISOPEN) && CALLOUT(dev))
|
|
rc->rc_flags |= RC_ACTOUT;
|
|
out:
|
|
(void) splx(s);
|
|
|
|
if(rc->rc_dcdwaits == 0 && !(tp->t_state & TS_ISOPEN))
|
|
rc_hardclose(rc);
|
|
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
rcclose(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag, mode;
|
|
struct proc *p;
|
|
{
|
|
register struct rc_chans *rc;
|
|
register struct tty *tp;
|
|
int s, unit = GET_UNIT(dev);
|
|
|
|
if (unit >= NRC * CD180_NCHAN)
|
|
return ENXIO;
|
|
rc = &rc_chans[unit];
|
|
tp = rc->rc_tp;
|
|
#ifdef RCDEBUG
|
|
printf("rc%d/%d: rcclose dev %x\n", rc->rc_rcb->rcb_unit, unit, dev);
|
|
#endif
|
|
s = spltty();
|
|
(*linesw[tp->t_line].l_close)(tp, flag);
|
|
disc_optim(tp, &tp->t_termios, rc);
|
|
rcstop(tp, FREAD | FWRITE);
|
|
rc_hardclose(rc);
|
|
ttyclose(tp);
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
static void rc_hardclose(rc)
|
|
register struct rc_chans *rc;
|
|
{
|
|
register int s, nec = rc->rc_rcb->rcb_addr;
|
|
register struct tty *tp = rc->rc_tp;
|
|
|
|
s = spltty();
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
|
|
/* Disable rx/tx intrs */
|
|
rcout(CD180_IER, rc->rc_ier = 0);
|
|
if ( (tp->t_cflag & HUPCL)
|
|
|| !(rc->rc_flags & RC_ACTOUT)
|
|
&& !(rc->rc_msvr & MSVR_CD)
|
|
&& !(tp->t_cflag & CLOCAL)
|
|
|| !(tp->t_state & TS_ISOPEN)
|
|
) {
|
|
CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan);
|
|
WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan);
|
|
(void) rc_modctl(rc, TIOCM_RTS, DMSET);
|
|
if (rc->rc_dtrwait) {
|
|
timeout(rc_dtrwakeup, rc, rc->rc_dtrwait);
|
|
rc->rc_flags |= RC_DTR_OFF;
|
|
}
|
|
}
|
|
rc->rc_flags &= ~RC_ACTOUT;
|
|
wakeup((caddr_t) &rc->rc_rcb); /* wake bi */
|
|
wakeup(TSA_CARR_ON(tp));
|
|
(void) splx(s);
|
|
}
|
|
|
|
/* Read from line */
|
|
static int
|
|
rcread(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp;
|
|
|
|
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
|
|
}
|
|
|
|
/* Write to line */
|
|
static int
|
|
rcwrite(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
struct tty *tp = rc_chans[GET_UNIT(dev)].rc_tp;
|
|
|
|
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
|
|
}
|
|
|
|
/* Reset the bastard */
|
|
static void rc_hwreset(unit, nec, chipid)
|
|
register int unit, nec;
|
|
unsigned int chipid;
|
|
{
|
|
CCRCMD(unit, -1, CCR_HWRESET); /* Hardware reset */
|
|
DELAY(20000);
|
|
WAITFORCCR(unit, -1);
|
|
|
|
rcout(RC_CTOUT, 0); /* Clear timeout */
|
|
rcout(CD180_GIVR, chipid);
|
|
rcout(CD180_GICR, 0);
|
|
|
|
/* Set Prescaler Registers (1 msec) */
|
|
rcout(CD180_PPRL, ((RC_OSCFREQ + 999) / 1000) & 0xFF);
|
|
rcout(CD180_PPRH, ((RC_OSCFREQ + 999) / 1000) >> 8);
|
|
|
|
/* Initialize Priority Interrupt Level Registers */
|
|
rcout(CD180_PILR1, RC_PILR_MODEM);
|
|
rcout(CD180_PILR2, RC_PILR_TX);
|
|
rcout(CD180_PILR3, RC_PILR_RX);
|
|
|
|
/* Reset DTR */
|
|
rcout(RC_DTREG, ~0);
|
|
}
|
|
|
|
/* Set channel parameters */
|
|
static int rc_param(tp, ts)
|
|
register struct tty *tp;
|
|
struct termios *ts;
|
|
{
|
|
register struct rc_chans *rc = &rc_chans[GET_UNIT(tp->t_dev)];
|
|
register int nec = rc->rc_rcb->rcb_addr;
|
|
int idivs, odivs, s, val, cflag, iflag, lflag, inpflow;
|
|
|
|
if ( ts->c_ospeed < 0 || ts->c_ospeed > 76800
|
|
|| ts->c_ispeed < 0 || ts->c_ispeed > 76800
|
|
)
|
|
return (EINVAL);
|
|
if (ts->c_ispeed == 0)
|
|
ts->c_ispeed = ts->c_ospeed;
|
|
odivs = RC_BRD(ts->c_ospeed);
|
|
idivs = RC_BRD(ts->c_ispeed);
|
|
|
|
s = spltty();
|
|
|
|
/* Select channel */
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
|
|
/* If speed == 0, hangup line */
|
|
if (ts->c_ospeed == 0) {
|
|
CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan, CCR_ResetChan);
|
|
WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan);
|
|
(void) rc_modctl(rc, TIOCM_DTR, DMBIC);
|
|
}
|
|
|
|
tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
|
|
cflag = ts->c_cflag;
|
|
iflag = ts->c_iflag;
|
|
lflag = ts->c_lflag;
|
|
|
|
if (idivs > 0) {
|
|
rcout(CD180_RBPRL, idivs & 0xFF);
|
|
rcout(CD180_RBPRH, idivs >> 8);
|
|
}
|
|
if (odivs > 0) {
|
|
rcout(CD180_TBPRL, odivs & 0xFF);
|
|
rcout(CD180_TBPRH, odivs >> 8);
|
|
}
|
|
|
|
/* set timeout value */
|
|
if (ts->c_ispeed > 0) {
|
|
int itm = ts->c_ispeed > 2400 ? 5 : 10000 / ts->c_ispeed + 1;
|
|
|
|
if ( !(lflag & ICANON)
|
|
&& ts->c_cc[VMIN] != 0 && ts->c_cc[VTIME] != 0
|
|
&& ts->c_cc[VTIME] * 10 > itm)
|
|
itm = ts->c_cc[VTIME] * 10;
|
|
|
|
rcout(CD180_RTPR, itm <= 255 ? itm : 255);
|
|
}
|
|
|
|
switch (cflag & CSIZE) {
|
|
case CS5: val = COR1_5BITS; break;
|
|
case CS6: val = COR1_6BITS; break;
|
|
case CS7: val = COR1_7BITS; break;
|
|
default:
|
|
case CS8: val = COR1_8BITS; break;
|
|
}
|
|
if (cflag & PARENB) {
|
|
val |= COR1_NORMPAR;
|
|
if (cflag & PARODD)
|
|
val |= COR1_ODDP;
|
|
if (!(cflag & INPCK))
|
|
val |= COR1_Ignore;
|
|
} else
|
|
val |= COR1_Ignore;
|
|
if (cflag & CSTOPB)
|
|
val |= COR1_2SB;
|
|
rcout(CD180_COR1, val);
|
|
|
|
/* Set FIFO threshold */
|
|
val = ts->c_ospeed <= 4800 ? 1 : CD180_NFIFO / 2;
|
|
inpflow = 0;
|
|
if ( (iflag & IXOFF)
|
|
&& ( ts->c_cc[VSTOP] != _POSIX_VDISABLE
|
|
&& ( ts->c_cc[VSTART] != _POSIX_VDISABLE
|
|
|| (iflag & IXANY)
|
|
)
|
|
)
|
|
) {
|
|
inpflow = 1;
|
|
val |= COR3_SCDE|COR3_FCT;
|
|
}
|
|
rcout(CD180_COR3, val);
|
|
|
|
/* Initialize on-chip automatic flow control */
|
|
val = 0;
|
|
rc->rc_flags &= ~(RC_CTSFLOW|RC_SEND_RDY);
|
|
if (cflag & CCTS_OFLOW) {
|
|
rc->rc_flags |= RC_CTSFLOW;
|
|
val |= COR2_CtsAE;
|
|
} else
|
|
rc->rc_flags |= RC_SEND_RDY;
|
|
if (tp->t_state & TS_TTSTOP)
|
|
rc->rc_flags |= RC_OSUSP;
|
|
else
|
|
rc->rc_flags &= ~RC_OSUSP;
|
|
if (cflag & CRTS_IFLOW)
|
|
rc->rc_flags |= RC_RTSFLOW;
|
|
else
|
|
rc->rc_flags &= ~RC_RTSFLOW;
|
|
|
|
if (inpflow) {
|
|
if (ts->c_cc[VSTART] != _POSIX_VDISABLE)
|
|
rcout(CD180_SCHR1, ts->c_cc[VSTART]);
|
|
rcout(CD180_SCHR2, ts->c_cc[VSTOP]);
|
|
val |= COR2_TxIBE;
|
|
if (iflag & IXANY)
|
|
val |= COR2_IXM;
|
|
}
|
|
|
|
rcout(CD180_COR2, rc->rc_cor2 = val);
|
|
|
|
CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan,
|
|
CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
|
|
|
|
disc_optim(tp, ts, rc);
|
|
|
|
/* modem ctl */
|
|
val = cflag & CLOCAL ? 0 : MCOR1_CDzd;
|
|
if (cflag & CCTS_OFLOW)
|
|
val |= MCOR1_CTSzd;
|
|
rcout(CD180_MCOR1, val);
|
|
|
|
val = cflag & CLOCAL ? 0 : MCOR2_CDod;
|
|
if (cflag & CCTS_OFLOW)
|
|
val |= MCOR2_CTSod;
|
|
rcout(CD180_MCOR2, val);
|
|
|
|
/* enable i/o and interrupts */
|
|
CCRCMD(rc->rc_rcb->rcb_unit, rc->rc_chan,
|
|
CCR_XMTREN | ((cflag & CREAD) ? CCR_RCVREN : CCR_RCVRDIS));
|
|
WAITFORCCR(rc->rc_rcb->rcb_unit, rc->rc_chan);
|
|
|
|
rc->rc_ier = cflag & CLOCAL ? 0 : IER_CD;
|
|
if (cflag & CCTS_OFLOW)
|
|
rc->rc_ier |= IER_CTS;
|
|
if (cflag & CREAD)
|
|
rc->rc_ier |= IER_RxData;
|
|
if (tp->t_state & TS_BUSY)
|
|
rc->rc_ier |= IER_TxRdy;
|
|
if (ts->c_ospeed != 0)
|
|
rc_modctl(rc, TIOCM_DTR, DMBIS);
|
|
if ((cflag & CCTS_OFLOW) && (rc->rc_msvr & MSVR_CTS))
|
|
rc->rc_flags |= RC_SEND_RDY;
|
|
rcout(CD180_IER, rc->rc_ier);
|
|
(void) splx(s);
|
|
return 0;
|
|
}
|
|
|
|
/* Re-initialize board after bogus interrupts */
|
|
static void rc_reinit(rcb)
|
|
struct rc_softc *rcb;
|
|
{
|
|
register struct rc_chans *rc, *rce;
|
|
register int nec;
|
|
|
|
nec = rcb->rcb_addr;
|
|
rc_hwreset(rcb->rcb_unit, nec, RC_FAKEID);
|
|
rc = &rc_chans[rcb->rcb_unit * CD180_NCHAN];
|
|
rce = rc + CD180_NCHAN;
|
|
for (; rc < rce; rc++)
|
|
(void) rc_param(rc->rc_tp, &rc->rc_tp->t_termios);
|
|
}
|
|
|
|
static int
|
|
rcioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
int cmd, flag;
|
|
caddr_t data;
|
|
struct proc *p;
|
|
{
|
|
register struct rc_chans *rc = &rc_chans[GET_UNIT(dev)];
|
|
register int s, error;
|
|
struct tty *tp = rc->rc_tp;
|
|
|
|
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
|
|
if (error >= 0)
|
|
return (error);
|
|
error = ttioctl(tp, cmd, data, flag);
|
|
disc_optim(tp, &tp->t_termios, rc);
|
|
if (error >= 0)
|
|
return (error);
|
|
s = spltty();
|
|
|
|
switch (cmd) {
|
|
case TIOCSBRK:
|
|
rc->rc_pendcmd = CD180_C_SBRK;
|
|
break;
|
|
|
|
case TIOCCBRK:
|
|
rc->rc_pendcmd = CD180_C_EBRK;
|
|
break;
|
|
|
|
case TIOCSDTR:
|
|
(void) rc_modctl(rc, TIOCM_DTR, DMBIS);
|
|
break;
|
|
|
|
case TIOCCDTR:
|
|
(void) rc_modctl(rc, TIOCM_DTR, DMBIC);
|
|
break;
|
|
|
|
case TIOCMGET:
|
|
*(int *) data = rc_modctl(rc, 0, DMGET);
|
|
break;
|
|
|
|
case TIOCMSET:
|
|
(void) rc_modctl(rc, *(int *) data, DMSET);
|
|
break;
|
|
|
|
case TIOCMBIC:
|
|
(void) rc_modctl(rc, *(int *) data, DMBIC);
|
|
break;
|
|
|
|
case TIOCMBIS:
|
|
(void) rc_modctl(rc, *(int *) data, DMBIS);
|
|
break;
|
|
|
|
case TIOCMSDTRWAIT:
|
|
error = suser(p->p_ucred, &p->p_acflag);
|
|
if (error != 0) {
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
rc->rc_dtrwait = *(int *)data * hz / 100;
|
|
break;
|
|
|
|
case TIOCMGDTRWAIT:
|
|
*(int *)data = rc->rc_dtrwait * 100 / hz;
|
|
break;
|
|
|
|
default:
|
|
(void) splx(s);
|
|
return ENOTTY;
|
|
}
|
|
(void) splx(s);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* Modem control routines */
|
|
|
|
static int rc_modctl(rc, bits, cmd)
|
|
register struct rc_chans *rc;
|
|
int bits, cmd;
|
|
{
|
|
register int nec = rc->rc_rcb->rcb_addr;
|
|
u_char *dtr = &rc->rc_rcb->rcb_dtr, msvr;
|
|
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
|
|
switch (cmd) {
|
|
case DMSET:
|
|
rcout(RC_DTREG, (bits & TIOCM_DTR) ?
|
|
~(*dtr |= 1 << rc->rc_chan) :
|
|
~(*dtr &= ~(1 << rc->rc_chan)));
|
|
msvr = rcin(CD180_MSVR);
|
|
if (bits & TIOCM_RTS)
|
|
msvr |= MSVR_RTS;
|
|
else
|
|
msvr &= ~MSVR_RTS;
|
|
if (bits & TIOCM_DTR)
|
|
msvr |= MSVR_DTR;
|
|
else
|
|
msvr &= ~MSVR_DTR;
|
|
rcout(CD180_MSVR, msvr);
|
|
break;
|
|
|
|
case DMBIS:
|
|
if (bits & TIOCM_DTR)
|
|
rcout(RC_DTREG, ~(*dtr |= 1 << rc->rc_chan));
|
|
msvr = rcin(CD180_MSVR);
|
|
if (bits & TIOCM_RTS)
|
|
msvr |= MSVR_RTS;
|
|
if (bits & TIOCM_DTR)
|
|
msvr |= MSVR_DTR;
|
|
rcout(CD180_MSVR, msvr);
|
|
break;
|
|
|
|
case DMGET:
|
|
bits = TIOCM_LE;
|
|
msvr = rc->rc_msvr = rcin(CD180_MSVR);
|
|
|
|
if (msvr & MSVR_RTS)
|
|
bits |= TIOCM_RTS;
|
|
if (msvr & MSVR_CTS)
|
|
bits |= TIOCM_CTS;
|
|
if (msvr & MSVR_DSR)
|
|
bits |= TIOCM_DSR;
|
|
if (msvr & MSVR_DTR)
|
|
bits |= TIOCM_DTR;
|
|
if (msvr & MSVR_CD)
|
|
bits |= TIOCM_CD;
|
|
if (~rcin(RC_RIREG) & (1 << rc->rc_chan))
|
|
bits |= TIOCM_RI;
|
|
return bits;
|
|
|
|
case DMBIC:
|
|
if (bits & TIOCM_DTR)
|
|
rcout(RC_DTREG, ~(*dtr &= ~(1 << rc->rc_chan)));
|
|
msvr = rcin(CD180_MSVR);
|
|
if (bits & TIOCM_RTS)
|
|
msvr &= ~MSVR_RTS;
|
|
if (bits & TIOCM_DTR)
|
|
msvr &= ~MSVR_DTR;
|
|
rcout(CD180_MSVR, msvr);
|
|
break;
|
|
}
|
|
rc->rc_msvr = rcin(CD180_MSVR);
|
|
return 0;
|
|
}
|
|
|
|
/* Test the board. */
|
|
int rc_test(nec, unit)
|
|
register int nec;
|
|
int unit;
|
|
{
|
|
int chan = 0;
|
|
int i = 0, rcnt, old_level;
|
|
unsigned int iack, chipid;
|
|
unsigned short divs;
|
|
static u_char ctest[] = "\377\125\252\045\244\0\377";
|
|
#define CTLEN 8
|
|
#define ERR(s) { \
|
|
printf("rc%d: ", unit); printf s ; printf("\n"); \
|
|
(void) splx(old_level); return 1; }
|
|
|
|
struct rtest {
|
|
u_char txbuf[CD180_NFIFO]; /* TX buffer */
|
|
u_char rxbuf[CD180_NFIFO]; /* RX buffer */
|
|
int rxptr; /* RX pointer */
|
|
int txptr; /* TX pointer */
|
|
} tchans[CD180_NCHAN];
|
|
|
|
old_level = spltty();
|
|
|
|
chipid = RC_FAKEID;
|
|
|
|
/* First, reset board to inital state */
|
|
rc_hwreset(unit, nec, chipid);
|
|
|
|
divs = RC_BRD(19200);
|
|
|
|
/* Initialize channels */
|
|
for (chan = 0; chan < CD180_NCHAN; chan++) {
|
|
|
|
/* Select and reset channel */
|
|
rcout(CD180_CAR, chan);
|
|
CCRCMD(unit, chan, CCR_ResetChan);
|
|
WAITFORCCR(unit, chan);
|
|
|
|
/* Set speed */
|
|
rcout(CD180_RBPRL, divs & 0xFF);
|
|
rcout(CD180_RBPRH, divs >> 8);
|
|
rcout(CD180_TBPRL, divs & 0xFF);
|
|
rcout(CD180_TBPRH, divs >> 8);
|
|
|
|
/* set timeout value */
|
|
rcout(CD180_RTPR, 0);
|
|
|
|
/* Establish local loopback */
|
|
rcout(CD180_COR1, COR1_NOPAR | COR1_8BITS | COR1_1SB);
|
|
rcout(CD180_COR2, COR2_LLM);
|
|
rcout(CD180_COR3, CD180_NFIFO);
|
|
CCRCMD(unit, chan, CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3);
|
|
CCRCMD(unit, chan, CCR_RCVREN | CCR_XMTREN);
|
|
WAITFORCCR(unit, chan);
|
|
rcout(CD180_MSVR, MSVR_RTS);
|
|
|
|
/* Fill TXBUF with test data */
|
|
for (i = 0; i < CD180_NFIFO; i++) {
|
|
tchans[chan].txbuf[i] = ctest[i];
|
|
tchans[chan].rxbuf[i] = 0;
|
|
}
|
|
tchans[chan].txptr = tchans[chan].rxptr = 0;
|
|
|
|
/* Now, start transmit */
|
|
rcout(CD180_IER, IER_TxMpty|IER_RxData);
|
|
}
|
|
/* Pseudo-interrupt poll stuff */
|
|
for (rcnt = 10000; rcnt-- > 0; rcnt--) {
|
|
i = ~(rcin(RC_BSR));
|
|
if (i & RC_BSR_TOUT)
|
|
ERR(("BSR timeout bit set\n"))
|
|
else if (i & RC_BSR_TXINT) {
|
|
iack = rcin(RC_PILR_TX);
|
|
if (iack != (GIVR_IT_TDI | chipid))
|
|
ERR(("Bad TX intr ack (%02x != %02x)\n",
|
|
iack, GIVR_IT_TDI | chipid));
|
|
chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH;
|
|
/* If no more data to transmit, disable TX intr */
|
|
if (tchans[chan].txptr >= CD180_NFIFO) {
|
|
iack = rcin(CD180_IER);
|
|
rcout(CD180_IER, iack & ~IER_TxMpty);
|
|
} else {
|
|
for (iack = tchans[chan].txptr;
|
|
iack < CD180_NFIFO; iack++)
|
|
rcout(CD180_TDR,
|
|
tchans[chan].txbuf[iack]);
|
|
tchans[chan].txptr = iack;
|
|
}
|
|
rcout(CD180_EOIR, 0);
|
|
} else if (i & RC_BSR_RXINT) {
|
|
u_char ucnt;
|
|
|
|
iack = rcin(RC_PILR_RX);
|
|
if (iack != (GIVR_IT_RGDI | chipid) &&
|
|
iack != (GIVR_IT_REI | chipid))
|
|
ERR(("Bad RX intr ack (%02x != %02x)\n",
|
|
iack, GIVR_IT_RGDI | chipid))
|
|
chan = (rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH;
|
|
ucnt = rcin(CD180_RDCR) & 0xF;
|
|
while (ucnt-- > 0) {
|
|
iack = rcin(CD180_RCSR);
|
|
if (iack & RCSR_Timeout)
|
|
break;
|
|
if (iack & 0xF)
|
|
ERR(("Bad char chan %d (RCSR = %02X)\n",
|
|
chan, iack))
|
|
if (tchans[chan].rxptr > CD180_NFIFO)
|
|
ERR(("Got extra chars chan %d\n",
|
|
chan))
|
|
tchans[chan].rxbuf[tchans[chan].rxptr++] =
|
|
rcin(CD180_RDR);
|
|
}
|
|
rcout(CD180_EOIR, 0);
|
|
}
|
|
rcout(RC_CTOUT, 0);
|
|
for (iack = chan = 0; chan < CD180_NCHAN; chan++)
|
|
if (tchans[chan].rxptr >= CD180_NFIFO)
|
|
iack++;
|
|
if (iack == CD180_NCHAN)
|
|
break;
|
|
}
|
|
for (chan = 0; chan < CD180_NCHAN; chan++) {
|
|
/* Select and reset channel */
|
|
rcout(CD180_CAR, chan);
|
|
CCRCMD(unit, chan, CCR_ResetChan);
|
|
}
|
|
|
|
if (!rcnt)
|
|
ERR(("looses characters during local loopback\n"))
|
|
/* Now, check data */
|
|
for (chan = 0; chan < CD180_NCHAN; chan++)
|
|
for (i = 0; i < CD180_NFIFO; i++)
|
|
if (ctest[i] != tchans[chan].rxbuf[i])
|
|
ERR(("data mismatch chan %d ptr %d (%d != %d)\n",
|
|
chan, i, ctest[i], tchans[chan].rxbuf[i]))
|
|
(void) splx(old_level);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef RCDEBUG
|
|
static void printrcflags(rc, comment)
|
|
struct rc_chans *rc;
|
|
char *comment;
|
|
{
|
|
u_short f = rc->rc_flags;
|
|
register int nec = rc->rc_rcb->rcb_addr;
|
|
|
|
printf("rc%d/%d: %s flags: %s%s%s%s%s%s%s%s%s%s%s%s\n",
|
|
rc->rc_rcb->rcb_unit, rc->rc_chan, comment,
|
|
(f & RC_DTR_OFF)?"DTR_OFF " :"",
|
|
(f & RC_ACTOUT) ?"ACTOUT " :"",
|
|
(f & RC_RTSFLOW)?"RTSFLOW " :"",
|
|
(f & RC_CTSFLOW)?"CTSFLOW " :"",
|
|
(f & RC_DORXFER)?"DORXFER " :"",
|
|
(f & RC_DOXXFER)?"DOXXFER " :"",
|
|
(f & RC_MODCHG) ?"MODCHG " :"",
|
|
(f & RC_OSUSP) ?"OSUSP " :"",
|
|
(f & RC_OSBUSY) ?"OSBUSY " :"",
|
|
(f & RC_WAS_BUFOVFL) ?"BUFOVFL " :"",
|
|
(f & RC_WAS_SILOVFL) ?"SILOVFL " :"",
|
|
(f & RC_SEND_RDY) ?"SEND_RDY":"");
|
|
|
|
rcout(CD180_CAR, rc->rc_chan);
|
|
|
|
printf("rc%d/%d: msvr %02x ier %02x ccsr %02x\n",
|
|
rc->rc_rcb->rcb_unit, rc->rc_chan,
|
|
rcin(CD180_MSVR),
|
|
rcin(CD180_IER),
|
|
rcin(CD180_CCSR));
|
|
}
|
|
#endif /* RCDEBUG */
|
|
|
|
static struct tty *
|
|
rcdevtotty(dev)
|
|
dev_t dev;
|
|
{
|
|
int unit;
|
|
|
|
unit = GET_UNIT(dev);
|
|
if (unit >= NRC * CD180_NCHAN)
|
|
return NULL;
|
|
return (&rc_tty[unit]);
|
|
}
|
|
|
|
static void
|
|
rc_dtrwakeup(chan)
|
|
void *chan;
|
|
{
|
|
struct rc_chans *rc;
|
|
|
|
rc = (struct rc_chans *)chan;
|
|
rc->rc_flags &= ~RC_DTR_OFF;
|
|
wakeup(&rc->rc_dtrwait);
|
|
}
|
|
|
|
static void
|
|
rc_discard_output(rc)
|
|
struct rc_chans *rc;
|
|
{
|
|
disable_intr();
|
|
if (rc->rc_flags & RC_DOXXFER) {
|
|
rc_scheduled_event -= LOTS_OF_EVENTS;
|
|
rc->rc_flags &= ~RC_DOXXFER;
|
|
}
|
|
rc->rc_optr = rc->rc_obufend;
|
|
rc->rc_tp->t_state &= ~TS_BUSY;
|
|
enable_intr();
|
|
ttwwakeup(rc->rc_tp);
|
|
}
|
|
|
|
static void
|
|
rc_wakeup(chan)
|
|
void *chan;
|
|
{
|
|
timeout(rc_wakeup, (caddr_t)NULL, 1);
|
|
|
|
if (rc_scheduled_event != 0) {
|
|
int s;
|
|
|
|
s = splsofttty();
|
|
rcpoll();
|
|
splx(s);
|
|
}
|
|
}
|
|
|
|
static void
|
|
disc_optim(tp, t, rc)
|
|
struct tty *tp;
|
|
struct termios *t;
|
|
struct rc_chans *rc;
|
|
{
|
|
|
|
if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
|
|
&& (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
|
|
&& (!(t->c_iflag & PARMRK)
|
|
|| (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
|
|
&& !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
|
|
&& linesw[tp->t_line].l_rint == ttyinput)
|
|
tp->t_state |= TS_CAN_BYPASS_L_RINT;
|
|
else
|
|
tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
|
|
if (tp->t_line == SLIPDISC)
|
|
rc->rc_hotchar = 0xc0;
|
|
else if (tp->t_line == PPPDISC)
|
|
rc->rc_hotchar = 0x7e;
|
|
else
|
|
rc->rc_hotchar = 0;
|
|
}
|
|
|
|
static void
|
|
rc_wait0(nec, unit, chan, line)
|
|
int nec, unit, chan, line;
|
|
{
|
|
int rcnt;
|
|
|
|
for (rcnt = 50; rcnt && rcin(CD180_CCR); rcnt--)
|
|
DELAY(30);
|
|
if (rcnt == 0)
|
|
printf("rc%d/%d: channel command timeout, rc.c line: %d\n",
|
|
unit, chan, line);
|
|
}
|
|
|
|
static rc_devsw_installed = 0;
|
|
|
|
static void rc_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
|
|
if( ! rc_devsw_installed ) {
|
|
dev = makedev(CDEV_MAJOR, 0);
|
|
cdevsw_add(&dev,&rc_cdevsw, NULL);
|
|
rc_devsw_installed = 1;
|
|
}
|
|
}
|
|
|
|
SYSINIT(rcdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,rc_drvinit,NULL)
|
|
|
|
|
|
#endif /* NRC */
|