diff options
Diffstat (limited to 'sys/i386/isa/rc.c')
| -rw-r--r-- | sys/i386/isa/rc.c | 1466 |
1 files changed, 0 insertions, 1466 deletions
diff --git a/sys/i386/isa/rc.c b/sys/i386/isa/rc.c deleted file mode 100644 index c171949..0000000 --- a/sys/i386/isa/rc.c +++ /dev/null @@ -1,1466 +0,0 @@ -/* - * Copyright (C) 1995 by Pavel Antonov, Moscow, Russia. - * Copyright (C) 1995 by Andrey A. Chernov, Moscow, Russia. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - * - */ - -/* - * SDL Communications Riscom/8 (based on Cirrus Logic CL-CD180) driver - * - */ - -#include "rc.h" - -/*#define RCDEBUG*/ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/kernel.h> -#include <sys/tty.h> -#include <sys/conf.h> -#include <sys/dkstat.h> -#include <sys/fcntl.h> -#include <sys/bus.h> -#include <sys/interrupt.h> - - -#include <i386/isa/isa_device.h> - -#include <i386/isa/ic/cd180.h> -#include <i386/isa/rcreg.h> - -/* Prototypes */ -static int rcprobe(struct isa_device *); -static int rcattach(struct isa_device *); - -#define rcin(port) RC_IN (nec, port) -#define rcout(port,v) RC_OUT (nec, port, v) - -#define WAITFORCCR(u,c) rc_wait0(nec, (u), (c), __LINE__) -#define CCRCMD(u,c,cmd) WAITFORCCR((u), (c)); rcout(CD180_CCR, (cmd)) - -#define RC_IBUFSIZE 256 -#define RB_I_HIGH_WATER (TTYHOG - 2 * RC_IBUFSIZE) -#define RC_OBUFSIZE 512 -#define RC_IHIGHWATER (3 * RC_IBUFSIZE / 4) -#define INPUT_FLAGS_SHIFT (2 * RC_IBUFSIZE) -#define LOTS_OF_EVENTS 64 - -#define RC_FAKEID 0x10 - -#define RC_PROBED 1 -#define RC_ATTACHED 2 - -#define GET_UNIT(dev) (minor(dev) & 0x3F) -#define CALLOUT(dev) (minor(dev) & 0x80) - -/* For isa routines */ -struct isa_driver rcdriver = { - INTR_TYPE_TTY, - rcprobe, - rcattach, - "rc" -}; -COMPAT_ISA_DRIVER(rc, rcdriver); - -static d_open_t rcopen; -static d_close_t rcclose; -static d_ioctl_t rcioctl; - -#define CDEV_MAJOR 63 -static struct cdevsw rc_cdevsw = { - /* open */ rcopen, - /* close */ rcclose, - /* read */ ttyread, - /* write */ ttywrite, - /* ioctl */ rcioctl, - /* poll */ ttypoll, - /* mmap */ nommap, - /* strategy */ nostrategy, - /* name */ "rc", - /* maj */ CDEV_MAJOR, - /* dump */ nodump, - /* psize */ nopsize, - /* flags */ D_TTY | D_KQFILTER, - /* kqfilter */ ttykqfilter, -}; - -/* Per-board structure */ -static struct rc_softc { - u_int rcb_probed; /* 1 - probed, 2 - attached */ - u_int rcb_addr; /* Base I/O addr */ - u_int rcb_unit; /* unit # */ - u_char rcb_dtr; /* DTR status */ - struct rc_chans *rcb_baserc; /* base rc ptr */ -} rc_softc[NRC]; - -/* Per-channel structure */ -static struct rc_chans { - struct rc_softc *rc_rcb; /* back ptr */ - u_short rc_flags; /* Misc. flags */ - int rc_chan; /* Channel # */ - u_char rc_ier; /* intr. enable reg */ - u_char rc_msvr; /* modem sig. status */ - u_char rc_cor2; /* options reg */ - u_char rc_pendcmd; /* special cmd pending */ - u_int rc_dtrwait; /* dtr timeout */ - u_int rc_dcdwaits; /* how many waits DCD in open */ - u_char rc_hotchar; /* end packed optimize */ - struct tty *rc_tp; /* tty struct */ - u_char *rc_iptr; /* Chars input buffer */ - u_char *rc_hiwat; /* hi-water mark */ - u_char *rc_bufend; /* end of buffer */ - u_char *rc_optr; /* ptr in output buf */ - u_char *rc_obufend; /* end of output buf */ - u_char rc_ibuf[4 * RC_IBUFSIZE]; /* input buffer */ - u_char rc_obuf[RC_OBUFSIZE]; /* output buffer */ -} rc_chans[NRC * CD180_NCHAN]; - -static int rc_scheduled_event = 0; - -/* for pstat -t */ -static struct tty rc_tty[NRC * CD180_NCHAN]; -static const int nrc_tty = NRC * CD180_NCHAN; - -/* Flags */ -#define RC_DTR_OFF 0x0001 /* DTR wait, for close/open */ -#define RC_ACTOUT 0x0002 /* Dial-out port active */ -#define RC_RTSFLOW 0x0004 /* RTS flow ctl enabled */ -#define RC_CTSFLOW 0x0008 /* CTS flow ctl enabled */ -#define RC_DORXFER 0x0010 /* RXFER event planned */ -#define RC_DOXXFER 0x0020 /* XXFER event planned */ -#define RC_MODCHG 0x0040 /* Modem status changed */ -#define RC_OSUSP 0x0080 /* Output suspended */ -#define RC_OSBUSY 0x0100 /* start() routine in progress */ -#define RC_WAS_BUFOVFL 0x0200 /* low-level buffer ovferflow */ -#define RC_WAS_SILOVFL 0x0400 /* silo buffer overflow */ -#define RC_SEND_RDY 0x0800 /* ready to send */ - -/* Table for translation of RCSR status bits to internal form */ -static int rc_rcsrt[16] = { - 0, TTY_OE, TTY_FE, - TTY_FE|TTY_OE, TTY_PE, TTY_PE|TTY_OE, - TTY_PE|TTY_FE, TTY_PE|TTY_FE|TTY_OE, TTY_BI, - TTY_BI|TTY_OE, TTY_BI|TTY_FE, TTY_BI|TTY_FE|TTY_OE, - TTY_BI|TTY_PE, TTY_BI|TTY_PE|TTY_OE, TTY_BI|TTY_PE|TTY_FE, - TTY_BI|TTY_PE|TTY_FE|TTY_OE -}; - -static void *rc_ih; - -/* Static prototypes */ -static ointhand2_t rcintr; -static void rc_hwreset(int, int, unsigned int); -static int rc_test(int, int); -static void rc_discard_output(struct rc_chans *); -static void rc_hardclose(struct rc_chans *); -static int rc_modctl(struct rc_chans *, int, int); -static void rc_start(struct tty *); -static void rc_stop(struct tty *, int rw); -static int rc_param(struct tty *, struct termios *); -static void rcpoll(void *); -static void rc_reinit(struct rc_softc *); -#ifdef RCDEBUG -static void printrcflags(); -#endif -static timeout_t rc_dtrwakeup; -static timeout_t rc_wakeup; -static void disc_optim(struct tty *tp, struct termios *t, struct rc_chans *); -static void rc_wait0(int nec, int unit, int chan, int line); - -/**********************************************/ - -/* Quick device probing */ -static int -rcprobe(dvp) - struct isa_device *dvp; -{ - int irq = ffs(dvp->id_irq) - 1; - register int nec = dvp->id_iobase; - - if (dvp->id_unit > NRC) - return 0; - if (!RC_VALIDADDR(nec)) { - printf("rc%d: illegal base address %x\n", dvp->id_unit, nec); - return 0; - } - if (!RC_VALIDIRQ(irq)) { - printf("rc%d: illegal IRQ value %d\n", dvp->id_unit, irq); - return 0; - } - rcout(CD180_PPRL, 0x22); /* Random values to Prescale reg. */ - rcout(CD180_PPRH, 0x11); - if (rcin(CD180_PPRL) != 0x22 || rcin(CD180_PPRH) != 0x11) - return 0; - /* Now, test the board more thoroughly, with diagnostic */ - if (rc_test(nec, dvp->id_unit)) - return 0; - rc_softc[dvp->id_unit].rcb_probed = RC_PROBED; - - return 0xF; -} - -static int -rcattach(dvp) - struct isa_device *dvp; -{ - register int chan, nec = dvp->id_iobase; - struct rc_softc *rcb = &rc_softc[dvp->id_unit]; - struct rc_chans *rc = &rc_chans[dvp->id_unit * CD180_NCHAN]; - static int rc_started = 0; - struct tty *tp; - - dvp->id_ointr = rcintr; - - /* Thorooughly test the device */ - if (rcb->rcb_probed != RC_PROBED) - return 0; - rcb->rcb_addr = nec; - rcb->rcb_dtr = 0; - rcb->rcb_baserc = rc; - rcb->rcb_unit = dvp->id_unit; - /*rcb->rcb_chipid = 0x10 + dvp->id_unit;*/ - printf("rc%d: %d chans, firmware rev. %c\n", rcb->rcb_unit, - CD180_NCHAN, (rcin(CD180_GFRCR) & 0xF) + 'A'); - - for (chan = 0; chan < CD180_NCHAN; chan++, rc++) { - rc->rc_rcb = rcb; - rc->rc_chan = chan; - rc->rc_iptr = rc->rc_ibuf; - rc->rc_bufend = &rc->rc_ibuf[RC_IBUFSIZE]; - rc->rc_hiwat = &rc->rc_ibuf[RC_IHIGHWATER]; - rc->rc_flags = rc->rc_ier = rc->rc_msvr = 0; - rc->rc_cor2 = rc->rc_pendcmd = 0; - rc->rc_optr = rc->rc_obufend = rc->rc_obuf; - rc->rc_dtrwait = 3 * hz; - rc->rc_dcdwaits= 0; - rc->rc_hotchar = 0; - tp = rc->rc_tp = &rc_tty[chan + (dvp->id_unit * CD180_NCHAN)]; - ttychars(tp); - tp->t_lflag = tp->t_iflag = tp->t_oflag = 0; - tp->t_cflag = TTYDEF_CFLAG; - tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; - make_dev(&rc_cdevsw, chan + CD180_NCHAN * rcb->rcb_unit, - UID_ROOT, GID_WHEEL, 0600, "ttym%d", chan + CD180_NCHAN * - rcb->rcb_unit); - make_dev(&rc_cdevsw, chan + CD180_NCHAN * rcb->rcb_unit + 128, - UID_UUCP, GID_DIALER, 0660, "cuam%d", chan + CD180_NCHAN * - rcb->rcb_unit); - } - rcb->rcb_probed = RC_ATTACHED; - if (!rc_started) { - cdevsw_add(&rc_cdevsw); - swi_add(&tty_ithd, "tty:rc", rcpoll, NULL, SWI_TTY, 0, &rc_ih); - rc_wakeup((void *)NULL); - rc_started = 1; - } - return 1; -} - -/* RC interrupt handling */ -static void -rcintr(unit) - int unit; -{ - register struct rc_softc *rcb = &rc_softc[unit]; - register struct rc_chans *rc; - register int nec, resid; - register u_char val, iack, bsr, ucnt, *optr; - int good_data, t_state; - - if (rcb->rcb_probed != RC_ATTACHED) { - printf("rc%d: bogus interrupt\n", unit); - return; - } - nec = rcb->rcb_addr; - - bsr = ~(rcin(RC_BSR)); - - if (!(bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT))) { - printf("rc%d: extra interrupt\n", unit); - rcout(CD180_EOIR, 0); - return; - } - - while (bsr & (RC_BSR_TOUT|RC_BSR_RXINT|RC_BSR_TXINT|RC_BSR_MOINT)) { -#ifdef RCDEBUG_DETAILED - printf("rc%d: intr (%02x) %s%s%s%s\n", unit, bsr, - (bsr & RC_BSR_TOUT)?"TOUT ":"", - (bsr & RC_BSR_RXINT)?"RXINT ":"", - (bsr & RC_BSR_TXINT)?"TXINT ":"", - (bsr & RC_BSR_MOINT)?"MOINT":""); -#endif - if (bsr & RC_BSR_TOUT) { - printf("rc%d: hardware failure, reset board\n", unit); - rcout(RC_CTOUT, 0); - rc_reinit(rcb); - return; - } - if (bsr & RC_BSR_RXINT) { - iack = rcin(RC_PILR_RX); - good_data = (iack == (GIVR_IT_RGDI | RC_FAKEID)); - if (!good_data && iack != (GIVR_IT_REI | RC_FAKEID)) { - printf("rc%d: fake rxint: %02x\n", unit, iack); - goto more_intrs; - } - rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); - t_state = rc->rc_tp->t_state; - /* Do RTS flow control stuff */ - if ( (rc->rc_flags & RC_RTSFLOW) - || !(t_state & TS_ISOPEN) - ) { - if ( ( !(t_state & TS_ISOPEN) - || (t_state & TS_TBLOCK) - ) - && (rc->rc_msvr & MSVR_RTS) - ) - rcout(CD180_MSVR, - rc->rc_msvr &= ~MSVR_RTS); - else if (!(rc->rc_msvr & MSVR_RTS)) - rcout(CD180_MSVR, - rc->rc_msvr |= MSVR_RTS); - } - ucnt = rcin(CD180_RDCR) & 0xF; - resid = 0; - - if (t_state & TS_ISOPEN) { - /* check for input buffer overflow */ - if ((rc->rc_iptr + ucnt) >= rc->rc_bufend) { - resid = ucnt; - ucnt = rc->rc_bufend - rc->rc_iptr; - resid -= ucnt; - if (!(rc->rc_flags & RC_WAS_BUFOVFL)) { - rc->rc_flags |= RC_WAS_BUFOVFL; - rc_scheduled_event++; - } - } - optr = rc->rc_iptr; - /* check foor good data */ - if (good_data) { - while (ucnt-- > 0) { - val = rcin(CD180_RDR); - optr[0] = val; - optr[INPUT_FLAGS_SHIFT] = 0; - optr++; - rc_scheduled_event++; - if (val != 0 && val == rc->rc_hotchar) - swi_sched(rc_ih, 0); - } - } else { - /* Store also status data */ - while (ucnt-- > 0) { - iack = rcin(CD180_RCSR); - if (iack & RCSR_Timeout) - break; - if ( (iack & RCSR_OE) - && !(rc->rc_flags & RC_WAS_SILOVFL)) { - rc->rc_flags |= RC_WAS_SILOVFL; - rc_scheduled_event++; - } - val = rcin(CD180_RDR); - /* - Don't store PE if IGNPAR and BREAK if IGNBRK, - this hack allows "raw" tty optimization - works even if IGN* is set. - */ - if ( !(iack & (RCSR_PE|RCSR_FE|RCSR_Break)) - || ((!(iack & (RCSR_PE|RCSR_FE)) - || !(rc->rc_tp->t_iflag & IGNPAR)) - && (!(iack & RCSR_Break) - || !(rc->rc_tp->t_iflag & IGNBRK)))) { - if ( (iack & (RCSR_PE|RCSR_FE)) - && (t_state & TS_CAN_BYPASS_L_RINT) - && ((iack & RCSR_FE) - || ((iack & RCSR_PE) - && (rc->rc_tp->t_iflag & INPCK)))) - val = 0; - else if (val != 0 && val == rc->rc_hotchar) - swi_sched(rc_ih, 0); - optr[0] = val; - optr[INPUT_FLAGS_SHIFT] = iack; - optr++; - rc_scheduled_event++; - } - } - } - rc->rc_iptr = optr; - rc->rc_flags |= RC_DORXFER; - } else - resid = ucnt; - /* Clear FIFO if necessary */ - while (resid-- > 0) { - if (!good_data) - iack = rcin(CD180_RCSR); - else - iack = 0; - if (iack & RCSR_Timeout) - break; - (void) rcin(CD180_RDR); - } - goto more_intrs; - } - if (bsr & RC_BSR_MOINT) { - iack = rcin(RC_PILR_MODEM); - if (iack != (GIVR_IT_MSCI | RC_FAKEID)) { - printf("rc%d: fake moint: %02x\n", unit, iack); - goto more_intrs; - } - rc = rcb->rcb_baserc + ((rcin(CD180_GICR) & GICR_CHAN) >> GICR_LSH); - iack = rcin(CD180_MCR); - rc->rc_msvr = rcin(CD180_MSVR); - rcout(CD180_MCR, 0); -#ifdef RCDEBUG - printrcflags(rc, "moint"); -#endif - if (rc->rc_flags & RC_CTSFLOW) { - if (rc->rc_msvr & MSVR_CTS) - rc->rc_flags |= RC_SEND_RDY; - else - rc->rc_flags &= ~RC_SEND_RDY; - } else - rc->rc_flags |= RC_SEND_RDY; - if ((iack & MCR_CDchg) && !(rc->rc_flags & RC_MODCHG)) { - rc_scheduled_event += LOTS_OF_EVENTS; - rc->rc_flags |= RC_MODCHG; - swi_sched(rc_ih, 0); - } - goto more_intrs; - } - 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; - swi_sched(rc_ih, 0); - } - } - } - 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. */ -static void -rcpoll(void *arg) -{ - 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 -rc_stop(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: rc_stop %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, td) - dev_t dev; - int flag, mode; - struct thread *td; -{ - 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; - dev->si_tty = 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; - } - error = tsleep(&rc->rc_rcb, - TTIPRI|PCATCH, "rcbi", 0); - if (error) - goto out; - goto again; - } - } - if (tp->t_state & TS_XCLUDE && - suser(td)) { - error = EBUSY; - goto out; - } - } else { - tp->t_oproc = rc_start; - tp->t_param = rc_param; - tp->t_stop = rc_stop; - 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); - - 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, td) - dev_t dev; - int flag, mode; - struct thread *td; -{ - 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); - rc_stop(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); -} - -/* 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, td) -dev_t dev; -u_long cmd; -int flag; -caddr_t data; -struct thread *td; -{ - 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, td); - if (error != ENOIOCTL) - return (error); - error = ttioctl(tp, cmd, data, flag); - disc_optim(tp, &tp->t_termios, rc); - if (error != ENOIOCTL) - 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(td); - 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. */ -static 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 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(NULL); - 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; - rc->rc_hotchar = linesw[tp->t_line].l_hotchar; -} - -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); -} |
