186 lines
6.1 KiB
C
186 lines
6.1 KiB
C
/* $NetBSD: apci.c,v 1.3 1999/07/31 21:17:08 thorpej Exp $ */
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/*-
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* Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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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* @(#)dca.c 8.1 (Berkeley) 6/10/93
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*/
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#ifdef APCICONSOLE
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#include <sys/param.h>
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#include <dev/cons.h>
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#include <hp300/dev/frodoreg.h> /* for APCI offsets */
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#include <hp300/dev/apcireg.h> /* for register map */
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#include <hp300/dev/dcareg.h> /* for register bits */
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#include <hp300/stand/common/consdefs.h>
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#include <hp300/stand/common/samachdep.h>
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struct apciregs *apcicnaddr = 0;
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void
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apciprobe(cp)
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struct consdev *cp;
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{
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struct apciregs *apci = apcicnaddr =
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(struct apciregs *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1));
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cp->cn_pri = CN_DEAD;
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/*
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* Only a 425e can have an APCI console. On all other 4xx models,
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* the "first" serial port is mapped to the DCA at select code 9.
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*/
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if (machineid != HP_425 || mmuid != MMUID_425_E)
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return;
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#ifdef FORCEAPCICONSOLE
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cp->cn_pri = CN_REMOTE;
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#else
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cp->cn_pri = CN_NORMAL;
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#endif
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curcons_scode = -2;
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}
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void
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apciinit(cp)
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struct consdev *cp;
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{
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struct apciregs *apci = (struct apciregs *)apcicnaddr;
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/*
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* The only system on which this will happen is a 425e,
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* which does not currently have a framebuffer console
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* driver. We use the ROM's output method to let the
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* operator know we're switching to the APCI.
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*/
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userom = 1;
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printf("Switching to APCI console.\n");
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userom = 0;
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apci->ap_cfcr = CFCR_DLAB;
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apci->ap_data = APCIBRD(9600) & 0xff;
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apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff;
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apci->ap_cfcr = CFCR_8BITS;
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apci->ap_fifo =
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FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1;
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apci->ap_mcr = MCR_DTR | MCR_RTS;
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}
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/* ARGSUSED */
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#ifndef SMALL
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int
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apcigetchar(dev)
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dev_t dev;
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{
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register struct apciregs *apci = apcicnaddr;
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short stat;
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int c;
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if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0)
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return (0);
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c = apci->ap_data;
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return (c);
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}
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#else
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int
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apcigetchar(dev)
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dev_t dev;
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{
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return (0);
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}
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#endif
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/* ARGSUSED */
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void
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apciputchar(dev, c)
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dev_t dev;
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int c;
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{
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struct apciregs *apci = apcicnaddr;
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int timo;
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short stat;
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/* wait a reasonable time for the transmitter to come ready */
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timo = 50000;
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while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
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;
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apci->ap_data = c;
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/* wait for this transmission to complete */
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timo = 1000000;
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while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
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;
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}
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#endif
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