Add a standalone APCI driver, adapted from the standalone DCA driver
by me. This driver should only be invoked when there are no other
suitable console devices present in the system. This situation currently
exists on the 425e, for which we do not have a frame buffer driver,
and who's PROM does not map the second APCI UART to select code 9,
like is done on the 4{00,25,33}{t,s}.
This commit is contained in:
thorpej
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/* $NetBSD: apci.c,v 1.1 1997/05/12 07:41:55 thorpej Exp $ */
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/*
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* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
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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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struct dcadevice *dca = (struct dcadevice *)sctoaddr(9);
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cp->cn_pri = CN_DEAD;
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/* Only 400-series machines can have this. */
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switch (machineid) {
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case HP_400:
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case HP_425:
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case HP_433:
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break;
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default:
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return;
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}
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/* Make sure there's not a DCA in the way. */
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if (badaddr((caddr_t)dca) == 0) {
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switch (dca->dca_id) {
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case DCAID0:
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case DCAID1:
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case DCAREMID0:
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case DCAREMID1:
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return;
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}
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}
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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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