/* $OpenBSD: apci.c,v 1.28 2006/01/01 11:59:37 miod Exp $ */ /* $NetBSD: apci.c,v 1.9 2000/11/02 00:35:05 eeh Exp $ */ /*- * Copyright (c) 1996, 1997, 1999 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION 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. */ /* * Copyright (c) 1997 Michael Smith. All rights reserved. * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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. * * @(#)dca.c 8.2 (Berkeley) 1/12/94 */ /* * Device driver for the APCI 8250-like UARTs found on the Apollo * Utility Chip on HP 9000/400-series workstations. * * There are 4 APCI UARTs on the Frodo ASIC. The first one * is used to communicate with the Domain keyboard. The second * one is the serial console port when the firmware is in Domain/OS * mode, and is mapped to select code 9 by the HP-UX firmware (except * on 425e models). * * We don't bother attaching a tty to the first UART; it lacks modem/flow * control, and is directly connected to the keyboard connector anyhow. */ /* * XXX This driver is very similar to the dca driver, and much * XXX more code could be shared. (Currently, no code is shared.) * XXX FIXME! */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* to check for dca at 9 */ #include #include #include #include #include #include #include /* register bit definitions */ #ifdef DDB #include #endif struct apci_softc { struct device sc_dev; /* generic device glue */ struct isr sc_isr; struct apciregs *sc_apci; /* device registers */ struct tty *sc_tty; /* tty glue */ struct timeout sc_timeout; /* timeout */ int sc_ferr, sc_perr, sc_oflow, sc_toterr; /* stats */ int sc_flags; u_char sc_cua; /* callout mode */ }; /* sc_flags */ #define APCI_HASFIFO 0x01 /* unit has a fifo */ #define APCI_ISCONSOLE 0x02 /* unit is console */ #define APCI_SOFTCAR 0x04 /* soft carrier */ int apcimatch(struct device *, void *, void *); void apciattach(struct device *, struct device *, void *); struct cfattach apci_ca = { sizeof(struct apci_softc), apcimatch, apciattach }; struct cfdriver apci_cd = { NULL, "apci", DV_TTY }; int apciintr(void *); void apcieint(struct apci_softc *, int); void apcimint(struct apci_softc *, u_char); int apciparam(struct tty *, struct termios *); void apcistart(struct tty *); int apcimctl(struct apci_softc *, int, int); void apcitimeout(void *); cdev_decl(apci); #define APCIUNIT(x) (minor(x) & 0x7f) #define APCICUA(x) (minor(x) & 0x80) int apcidefaultrate = TTYDEF_SPEED; /* * Console support. */ struct apciregs *apci_cn = NULL; /* console hardware */ int apciconsinit; /* has been initialized */ int apcimajor; /* our major number */ cons_decl(apci); int apcimatch(parent, match, aux) struct device *parent; void *match, *aux; { struct frodo_attach_args *fa = aux; /* Looking for an apci? */ if (strcmp(fa->fa_name, apci_cd.cd_name) != 0) return (0); /* Are we checking a valid APCI offset? */ switch (fa->fa_offset) { case FRODO_APCI_OFFSET(1): case FRODO_APCI_OFFSET(2): case FRODO_APCI_OFFSET(3): /* Yup, we exist! */ return (1); } return (0); } void apciattach(parent, self, aux) struct device *parent, *self; void *aux; { struct apci_softc *sc = (struct apci_softc *)self; struct apciregs *apci; struct frodo_attach_args *fa = aux; sc->sc_apci = apci = (struct apciregs *)IIOV(FRODO_BASE + fa->fa_offset); sc->sc_flags = 0; /* Initialize timeout structure */ timeout_set(&sc->sc_timeout, apcitimeout, sc); /* Are we the console? */ if (apci == apci_cn) { sc->sc_flags |= APCI_ISCONSOLE; delay(100000); /* * We didn't know which unit this would be during * the console probe, so we have to fixup cn_dev here. */ cn_tab->cn_dev = makedev(apcimajor, self->dv_unit); } /* Look for a FIFO. */ apci->ap_fifo = FIFO_ENABLE|FIFO_RCV_RST|FIFO_XMT_RST|FIFO_TRIGGER_14; delay(100); if ((apci->ap_iir & IIR_FIFO_MASK) == IIR_FIFO_MASK) sc->sc_flags |= APCI_HASFIFO; /* Establish our interrupt handler. */ sc->sc_isr.isr_func = apciintr; sc->sc_isr.isr_arg = sc; sc->sc_isr.isr_priority = (sc->sc_flags & APCI_HASFIFO) ? IPL_TTY : IPL_TTYNOBUF; frodo_intr_establish(parent, fa->fa_line, &sc->sc_isr, self->dv_xname); /* Set soft carrier if requested by operator. */ if (self->dv_cfdata->cf_flags) sc->sc_flags |= APCI_SOFTCAR; /* * Need to reset baud rate, etc. of next print, so reset apciconsinit. * Also make sure console is always "hardwired". */ if (sc->sc_flags & APCI_ISCONSOLE) { apciconsinit = 0; sc->sc_flags |= APCI_SOFTCAR; printf(": console, "); } else printf(": "); if (sc->sc_flags & APCI_HASFIFO) printf("working fifo\n"); else printf("no fifo\n"); } /* ARGSUSED */ int apciopen(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { int unit = APCIUNIT(dev); struct apci_softc *sc; struct tty *tp; struct apciregs *apci; u_char code; int s, error = 0; if (unit >= apci_cd.cd_ndevs || (sc = apci_cd.cd_devs[unit]) == NULL) return (ENXIO); apci = sc->sc_apci; s = spltty(); if (sc->sc_tty == NULL) { tp = sc->sc_tty = ttymalloc(); } else tp = sc->sc_tty; splx(s); tp->t_oproc = apcistart; tp->t_param = apciparam; tp->t_dev = dev; if ((tp->t_state & TS_ISOPEN) == 0) { /* * Sanity clause: reset the chip on first open. * The chip might be left in an inconsistent state * if it is read inadventently. */ apciinit(apci, apcidefaultrate, CFCR_8BITS); tp->t_state |= TS_WOPEN; ttychars(tp); tp->t_iflag = TTYDEF_IFLAG; tp->t_oflag = TTYDEF_OFLAG; tp->t_cflag = TTYDEF_CFLAG; tp->t_lflag = TTYDEF_LFLAG; tp->t_ispeed = tp->t_ospeed = apcidefaultrate; s = spltty(); apciparam(tp, &tp->t_termios); ttsetwater(tp); /* Set the FIFO threshold based on the receive speed. */ if (sc->sc_flags & APCI_HASFIFO) apci->ap_fifo = FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | (tp->t_ispeed <= 1200 ? FIFO_TRIGGER_1 : FIFO_TRIGGER_14); /* Flush any pending I/O. */ while ((apci->ap_iir & IIR_IMASK) == IIR_RXRDY) code = apci->ap_data; } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) return (EBUSY); else s = spltty(); /* Set the modem control state. */ (void) apcimctl(sc, MCR_DTR | MCR_RTS, DMSET); /* Set soft-carrier if so configured. */ if ((sc->sc_flags & APCI_SOFTCAR) || APCICUA(dev) || (apcimctl(sc, 0, DMGET) & MSR_DCD)) tp->t_state |= TS_CARR_ON; if (APCICUA(dev)) { if (tp->t_state & TS_ISOPEN) { /* Ah, but someone already is dialed in... */ splx(s); return (EBUSY); } sc->sc_cua = 1; /* We go into CUA mode */ } /* Wait for carrier if necessary. */ if (flag & O_NONBLOCK) { if (!APCICUA(dev) && sc->sc_cua) { /* Opening TTY non-blocking... but the CUA is busy */ splx(s); return (EBUSY); } } else { while (sc->sc_cua || ((tp->t_cflag & CLOCAL) == 0 && (tp->t_state & TS_CARR_ON) == 0)) { tp->t_state |= TS_WOPEN; error = ttysleep(tp, (caddr_t)&tp->t_rawq, TTIPRI | PCATCH, ttopen, 0); if (!APCICUA(dev) && sc->sc_cua && error == EINTR) continue; if (error) { if (APCICUA(dev)) sc->sc_cua = 0; splx(s); return (error); } if (!APCICUA(dev) && sc->sc_cua) continue; } } splx(s); if (error == 0) error = (*linesw[tp->t_line].l_open)(dev, tp); if (error == 0) { /* clear errors, start timeout */ sc->sc_ferr = sc->sc_perr = sc->sc_oflow = sc->sc_toterr = 0; timeout_add(&sc->sc_timeout, hz); } return (error); } /* ARGSUSED */ int apciclose(dev, flag, mode, p) dev_t dev; int flag, mode; struct proc *p; { struct apci_softc *sc; struct tty *tp; struct apciregs *apci; int unit = APCIUNIT(dev); int s; sc = apci_cd.cd_devs[unit]; apci = sc->sc_apci; tp = sc->sc_tty; (*linesw[tp->t_line].l_close)(tp, flag); s = spltty(); apci->ap_cfcr &= ~CFCR_SBREAK; apci->ap_ier = 0; if (tp->t_cflag & HUPCL && (sc->sc_flags & APCI_SOFTCAR) == 0) { /* XXX perhaps only clear DTR */ (void) apcimctl(sc, 0, DMSET); } tp->t_state &= ~(TS_BUSY | TS_FLUSH); sc->sc_cua = 0; splx(s); ttyclose(tp); #if 0 ttyfree(tp); sc->sc_tty = NULL; #endif return (0); } int apciread(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(dev)]; struct tty *tp = sc->sc_tty; return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); } int apciwrite(dev, uio, flag) dev_t dev; struct uio *uio; int flag; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(dev)]; struct tty *tp = sc->sc_tty; return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); } struct tty * apcitty(dev) dev_t dev; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(dev)]; return (sc->sc_tty); } int apciintr(arg) void *arg; { struct apci_softc *sc = arg; struct apciregs *apci = sc->sc_apci; struct tty *tp = sc->sc_tty; u_char iir, lsr, c; int iflowdone = 0, claimed = 0; #define RCVBYTE() \ c = apci->ap_data; \ if (tp != NULL && (tp->t_state & TS_ISOPEN) != 0) \ (*linesw[tp->t_line].l_rint)(c, tp) for (;;) { iir = apci->ap_iir; /* get UART status */ switch (iir & IIR_IMASK) { case IIR_RLS: apcieint(sc, apci->ap_lsr); break; case IIR_RXRDY: case IIR_RXTOUT: RCVBYTE(); if (sc->sc_flags & APCI_HASFIFO) { while ((lsr = apci->ap_lsr) & LSR_RCV_MASK) { if (lsr == LSR_RXRDY) { RCVBYTE(); } else apcieint(sc, lsr); } } if (iflowdone == 0 && tp != NULL && (tp->t_cflag & CRTS_IFLOW) && tp->t_rawq.c_cc > (TTYHOG / 2)) { apci->ap_mcr &= ~MCR_RTS; iflowdone = 1; } break; case IIR_TXRDY: if (tp != NULL) { tp->t_state &=~ (TS_BUSY|TS_FLUSH); if (tp->t_line) (*linesw[tp->t_line].l_start)(tp); else apcistart(tp); } break; default: if (iir & IIR_NOPEND) return (claimed); log(LOG_WARNING, "%s: weird interrupt: 0x%x\n", sc->sc_dev.dv_xname, iir); /* FALLTHROUGH */ case IIR_MLSC: apcimint(sc, apci->ap_msr); break; } claimed = 1; } } void apcieint(sc, stat) struct apci_softc *sc; int stat; { struct tty *tp = sc->sc_tty; struct apciregs *apci = sc->sc_apci; int c; c = apci->ap_data; #ifdef DDB if ((sc->sc_flags & APCI_ISCONSOLE) && db_console && (stat & LSR_BI)) { Debugger(); return; } #endif if (tp == NULL || (tp->t_state & TS_ISOPEN) == 0) return; if (stat & (LSR_BI | LSR_FE)) { c |= TTY_FE; sc->sc_ferr++; } else if (stat & LSR_PE) { c |= TTY_PE; sc->sc_perr++; } else if (stat & LSR_OE) sc->sc_oflow++; (*linesw[tp->t_line].l_rint)(c, tp); } void apcimint(sc, stat) struct apci_softc *sc; u_char stat; { struct tty *tp = sc->sc_tty; struct apciregs *apci = sc->sc_apci; if (tp == NULL) return; if ((stat & MSR_DDCD) && (sc->sc_flags & APCI_SOFTCAR) == 0) { if (stat & MSR_DCD) (void)(*linesw[tp->t_line].l_modem)(tp, 1); else if ((*linesw[tp->t_line].l_modem)(tp, 0) == 0) apci->ap_mcr &= ~(MCR_DTR | MCR_RTS); } /* * CTS change. * If doing HW output flow control, start/stop output as appropriate. */ if ((stat & MSR_DCTS) && (tp->t_state & TS_ISOPEN) && (tp->t_cflag & CCTS_OFLOW)) { if (stat & MSR_CTS) { tp->t_state &=~ TS_TTSTOP; apcistart(tp); } else tp->t_state |= TS_TTSTOP; } } int apciioctl(dev, cmd, data, flag, p) dev_t dev; u_long cmd; caddr_t data; int flag; struct proc *p; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(dev)]; struct tty *tp = sc->sc_tty; struct apciregs *apci = sc->sc_apci; int error; error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); if (error >= 0) return (error); error = ttioctl(tp, cmd, data, flag, p); if (error >= 0) return (error); switch (cmd) { case TIOCSBRK: apci->ap_cfcr |= CFCR_SBREAK; break; case TIOCCBRK: apci->ap_cfcr &= ~CFCR_SBREAK; break; case TIOCSDTR: (void) apcimctl(sc, MCR_DTR | MCR_RTS, DMBIS); break; case TIOCCDTR: (void) apcimctl(sc, MCR_DTR | MCR_RTS, DMBIC); break; case TIOCMSET: (void) apcimctl(sc, *(int *)data, DMSET); break; case TIOCMBIS: (void) apcimctl(sc, *(int *)data, DMBIS); break; case TIOCMBIC: (void) apcimctl(sc, *(int *)data, DMBIC); break; case TIOCMGET: *(int *)data = apcimctl(sc, 0, DMGET); break; case TIOCGFLAGS: { int bits = 0; if (sc->sc_flags & APCI_SOFTCAR) bits |= TIOCFLAG_SOFTCAR; if (tp->t_cflag & CLOCAL) bits |= TIOCFLAG_CLOCAL; *(int *)data = bits; break; } case TIOCSFLAGS: { int userbits; error = suser(p, 0); if (error) return (EPERM); userbits = *(int *)data; if ((userbits & TIOCFLAG_SOFTCAR) || (sc->sc_flags & APCI_ISCONSOLE)) sc->sc_flags |= APCI_SOFTCAR; if (userbits & TIOCFLAG_CLOCAL) tp->t_cflag |= CLOCAL; break; } default: return (ENOTTY); } return (0); } int apciparam(tp, t) struct tty *tp; struct termios *t; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(tp->t_dev)]; struct apciregs *apci = sc->sc_apci; int cfcr, cflag = t->c_cflag; int ospeed = ttspeedtab(t->c_ospeed, apcispeedtab); int s; /* check requested parameters */ if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) return (EINVAL); switch (cflag & CSIZE) { case CS5: cfcr = CFCR_5BITS; break; case CS6: cfcr = CFCR_6BITS; break; case CS7: cfcr = CFCR_7BITS; break; case CS8: default: /* XXX gcc whines about cfcr being uninitialized... */ cfcr = CFCR_8BITS; break; } if (cflag & PARENB) { cfcr |= CFCR_PENAB; if ((cflag & PARODD) == 0) cfcr |= CFCR_PEVEN; } if (cflag & CSTOPB) cfcr |= CFCR_STOPB; s = spltty(); if (ospeed == 0) (void) apcimctl(sc, 0, DMSET); /* hang up line */ /* * Set the FIFO threshold based on the receive speed, if we * are changing it. */ if (tp->t_ispeed != t->c_ispeed) { if (sc->sc_flags & APCI_HASFIFO) apci->ap_fifo = FIFO_ENABLE | (t->c_ispeed <= 1200 ? FIFO_TRIGGER_1 : FIFO_TRIGGER_14); } if (ospeed != 0) { apci->ap_cfcr |= CFCR_DLAB; apci->ap_data = ospeed & 0xff; apci->ap_ier = (ospeed >> 8) & 0xff; apci->ap_cfcr = cfcr; } else apci->ap_cfcr = cfcr; /* and copy to tty */ tp->t_ispeed = t->c_ispeed; tp->t_ospeed = t->c_ospeed; tp->t_cflag = cflag; apci->ap_ier = IER_ERXRDY | IER_ETXRDY | IER_ERLS | IER_EMSC; splx(s); return (0); } void apcistart(tp) struct tty *tp; { struct apci_softc *sc = apci_cd.cd_devs[APCIUNIT(tp->t_dev)]; struct apciregs *apci = sc->sc_apci; int s, c; s = spltty(); if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) goto out; if (tp->t_outq.c_cc <= tp->t_lowat) { if (tp->t_state & TS_ASLEEP) { tp->t_state &= ~TS_ASLEEP; wakeup((caddr_t)&tp->t_outq); } if (tp->t_outq.c_cc == 0) goto out; selwakeup(&tp->t_wsel); } if (apci->ap_lsr & LSR_TXRDY) { tp->t_state |= TS_BUSY; if (sc->sc_flags & APCI_HASFIFO) { for (c = 0; c < 16 && tp->t_outq.c_cc; ++c) apci->ap_data = getc(&tp->t_outq); } else apci->ap_data = getc(&tp->t_outq); } out: splx(s); } /* * Stop output on a line. */ /* ARGSUSED */ int apcistop(tp, flag) struct tty *tp; int flag; { int s; s = spltty(); if (tp->t_state & TS_BUSY) if ((tp->t_state & TS_TTSTOP) == 0) tp->t_state |= TS_FLUSH; splx(s); return (0); } int apcimctl(sc, bits, how) struct apci_softc *sc; int bits, how; { struct apciregs *apci = sc->sc_apci; int s; s = spltty(); switch (how) { case DMSET: apci->ap_mcr = bits; break; case DMBIS: apci->ap_mcr |= bits; break; case DMBIC: apci->ap_mcr &= ~bits; break; case DMGET: bits = apci->ap_msr; break; } splx(s); return (bits); } void apcitimeout(arg) void *arg; { struct apci_softc *sc = arg; int ferr, perr, oflow, s; if (sc->sc_tty == NULL || (sc->sc_tty->t_state & TS_ISOPEN) == 0) return; /* Log any errors. */ if (sc->sc_ferr || sc->sc_perr || sc->sc_oflow) { s = spltty(); /* XXX necessary? */ ferr = sc->sc_ferr; perr = sc->sc_perr; oflow = sc->sc_oflow; sc->sc_ferr = sc->sc_perr = sc->sc_oflow = 0; splx(s); sc->sc_toterr += ferr + perr + oflow; log(LOG_WARNING, "%s: %d frame, %d parity, %d overflow, %d total errors\n", sc->sc_dev.dv_xname, ferr, perr, oflow, sc->sc_toterr); } timeout_add(&sc->sc_timeout, hz); } /* * The following routines are required for the APCI to act as the console. */ void apcicnprobe(cp) struct consdev *cp; { volatile u_int8_t *frodoregs; /* locate the major number */ for (apcimajor = 0; apcimajor < nchrdev; apcimajor++) if (cdevsw[apcimajor].d_open == apciopen) break; /* initialize the required fields */ cp->cn_dev = makedev(apcimajor, 0); /* XXX */ /* * The APCI can only be a console on a 425e; on other 4xx * models, the "first" serial port is mapped to the DCA * at select code 9. See frodo.c for the autoconfiguration * version of this check. */ if (machineid != HP_425 || mmuid != MMUID_425_E) return; /* * Check the service switch. On the 425e, this is a physical * switch, unlike other frodo-based machines, so we can use it * as a serial vs internal video selector, since the PROM can not * be configured for serial console. */ frodoregs = (volatile u_int8_t *)IIOV(FRODO_BASE); if (badaddr((caddr_t)frodoregs) == 0 && !ISSET(frodoregs[FRODO_IISR], FRODO_IISR_SERVICE)) cp->cn_pri = CN_REMOTE; else cp->cn_pri = CN_NORMAL; /* * If our priority is higher than the currently-remembered * console, install ourselves. */ if (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri) { cn_tab = cp; conscode = CONSCODE_INVALID; } } /* ARGSUSED */ void apcicninit(cp) struct consdev *cp; { /* * We are not interested by the second console pass. */ if (consolepass != 0) return; apci_cn = (struct apciregs *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1)); apciinit(apci_cn, apcidefaultrate, CFCR_8BITS); apciconsinit = 1; } /* ARGSUSED */ int apcicngetc(dev) dev_t dev; { u_char stat; int c, s; s = splhigh(); while (((stat = apci_cn->ap_lsr) & LSR_RXRDY) == 0) ; c = apci_cn->ap_data; /* clear any interrupts generated by this transmission */ stat = apci_cn->ap_iir; splx(s); return (c); } /* ARGSUSED */ void apcicnputc(dev, c) dev_t dev; int c; { int timo; u_char stat; int s; s = splhigh(); if (apciconsinit == 0) { apciinit(apci_cn, apcidefaultrate, CFCR_8BITS); apciconsinit = 1; } /* wait for any pending transmission to finish */ timo = 50000; while (((stat = apci_cn->ap_lsr) & LSR_TXRDY) == 0 && --timo) ; apci_cn->ap_data = c & 0xff; /* wait for this transmission to complete */ timo = 1500000; while (((stat = apci_cn->ap_lsr) & LSR_TXRDY) == 0 && --timo) ; /* clear any interrupts generated by this transmission */ stat = apci_cn->ap_iir; splx(s); }