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apci.c revision 1.1
      1  1.1  thorpej /*	$NetBSD: apci.c,v 1.1 1997/05/12 07:41:55 thorpej Exp $	*/
      2  1.1  thorpej 
      3  1.1  thorpej /*
      4  1.1  thorpej  * Copyright (c) 1997 Jason R. Thorpe.  All rights reserved.
      5  1.1  thorpej  * Copyright (c) 1988 University of Utah.
      6  1.1  thorpej  * Copyright (c) 1990, 1993
      7  1.1  thorpej  *	The Regents of the University of California.  All rights reserved.
      8  1.1  thorpej  *
      9  1.1  thorpej  * This code is derived from software contributed to Berkeley by
     10  1.1  thorpej  * the Systems Programming Group of the University of Utah Computer
     11  1.1  thorpej  * Science Department.
     12  1.1  thorpej  *
     13  1.1  thorpej  * Redistribution and use in source and binary forms, with or without
     14  1.1  thorpej  * modification, are permitted provided that the following conditions
     15  1.1  thorpej  * are met:
     16  1.1  thorpej  * 1. Redistributions of source code must retain the above copyright
     17  1.1  thorpej  *    notice, this list of conditions and the following disclaimer.
     18  1.1  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     19  1.1  thorpej  *    notice, this list of conditions and the following disclaimer in the
     20  1.1  thorpej  *    documentation and/or other materials provided with the distribution.
     21  1.1  thorpej  * 3. All advertising materials mentioning features or use of this software
     22  1.1  thorpej  *    must display the following acknowledgement:
     23  1.1  thorpej  *	This product includes software developed by the University of
     24  1.1  thorpej  *	California, Berkeley and its contributors.
     25  1.1  thorpej  * 4. Neither the name of the University nor the names of its contributors
     26  1.1  thorpej  *    may be used to endorse or promote products derived from this software
     27  1.1  thorpej  *    without specific prior written permission.
     28  1.1  thorpej  *
     29  1.1  thorpej  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     30  1.1  thorpej  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     31  1.1  thorpej  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     32  1.1  thorpej  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     33  1.1  thorpej  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     34  1.1  thorpej  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     35  1.1  thorpej  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     36  1.1  thorpej  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     37  1.1  thorpej  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     38  1.1  thorpej  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     39  1.1  thorpej  * SUCH DAMAGE.
     40  1.1  thorpej  *
     41  1.1  thorpej  *	@(#)dca.c	8.1 (Berkeley) 6/10/93
     42  1.1  thorpej  */
     43  1.1  thorpej 
     44  1.1  thorpej #ifdef APCICONSOLE
     45  1.1  thorpej #include <sys/param.h>
     46  1.1  thorpej #include <dev/cons.h>
     47  1.1  thorpej 
     48  1.1  thorpej #include <hp300/dev/frodoreg.h>		/* for APCI offsets */
     49  1.1  thorpej #include <hp300/dev/apcireg.h>		/* for register map */
     50  1.1  thorpej #include <hp300/dev/dcareg.h>		/* for register bits */
     51  1.1  thorpej 
     52  1.1  thorpej #include <hp300/stand/common/consdefs.h>
     53  1.1  thorpej #include <hp300/stand/common/samachdep.h>
     54  1.1  thorpej 
     55  1.1  thorpej struct apciregs *apcicnaddr = 0;
     56  1.1  thorpej 
     57  1.1  thorpej void
     58  1.1  thorpej apciprobe(cp)
     59  1.1  thorpej 	struct consdev *cp;
     60  1.1  thorpej {
     61  1.1  thorpej 	struct apciregs *apci = apcicnaddr =
     62  1.1  thorpej 	    (struct apciregs *)IIOV(FRODO_BASE + FRODO_APCI_OFFSET(1));
     63  1.1  thorpej 	struct dcadevice *dca = (struct dcadevice *)sctoaddr(9);
     64  1.1  thorpej 
     65  1.1  thorpej 	cp->cn_pri = CN_DEAD;
     66  1.1  thorpej 
     67  1.1  thorpej 	/* Only 400-series machines can have this. */
     68  1.1  thorpej 	switch (machineid) {
     69  1.1  thorpej 	case HP_400:
     70  1.1  thorpej 	case HP_425:
     71  1.1  thorpej 	case HP_433:
     72  1.1  thorpej 		break;
     73  1.1  thorpej 	default:
     74  1.1  thorpej 		return;
     75  1.1  thorpej 	}
     76  1.1  thorpej 
     77  1.1  thorpej 	/* Make sure there's not a DCA in the way. */
     78  1.1  thorpej 	if (badaddr((caddr_t)dca) == 0) {
     79  1.1  thorpej 		switch (dca->dca_id) {
     80  1.1  thorpej 		case DCAID0:
     81  1.1  thorpej 		case DCAID1:
     82  1.1  thorpej 		case DCAREMID0:
     83  1.1  thorpej 		case DCAREMID1:
     84  1.1  thorpej 			return;
     85  1.1  thorpej 		}
     86  1.1  thorpej 	}
     87  1.1  thorpej 
     88  1.1  thorpej #ifdef FORCEAPCICONSOLE
     89  1.1  thorpej 	cp->cn_pri = CN_REMOTE;
     90  1.1  thorpej #else
     91  1.1  thorpej 	cp->cn_pri = CN_NORMAL;
     92  1.1  thorpej #endif
     93  1.1  thorpej 	curcons_scode = -2;
     94  1.1  thorpej }
     95  1.1  thorpej 
     96  1.1  thorpej void
     97  1.1  thorpej apciinit(cp)
     98  1.1  thorpej 	struct consdev *cp;
     99  1.1  thorpej {
    100  1.1  thorpej 	struct apciregs *apci = (struct apciregs *)apcicnaddr;
    101  1.1  thorpej 
    102  1.1  thorpej 	/*
    103  1.1  thorpej 	 * The only system on which this will happen is a 425e,
    104  1.1  thorpej 	 * which does not currently have a framebuffer console
    105  1.1  thorpej 	 * driver.  We use the ROM's output method to let the
    106  1.1  thorpej 	 * operator know we're switching to the APCI.
    107  1.1  thorpej 	 */
    108  1.1  thorpej 	userom = 1;
    109  1.1  thorpej 	printf("Switching to APCI console.\n");
    110  1.1  thorpej 	userom = 0;
    111  1.1  thorpej 
    112  1.1  thorpej 	apci->ap_cfcr = CFCR_DLAB;
    113  1.1  thorpej 	apci->ap_data = APCIBRD(9600) & 0xff;
    114  1.1  thorpej 	apci->ap_ier  = (APCIBRD(9600) >> 8) & 0xff;
    115  1.1  thorpej 	apci->ap_cfcr = CFCR_8BITS;
    116  1.1  thorpej 	apci->ap_fifo =
    117  1.1  thorpej 	    FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1;
    118  1.1  thorpej 	apci->ap_mcr = MCR_DTR | MCR_RTS;
    119  1.1  thorpej }
    120  1.1  thorpej 
    121  1.1  thorpej /* ARGSUSED */
    122  1.1  thorpej #ifndef SMALL
    123  1.1  thorpej int
    124  1.1  thorpej apcigetchar(dev)
    125  1.1  thorpej 	dev_t dev;
    126  1.1  thorpej {
    127  1.1  thorpej 	register struct apciregs *apci = apcicnaddr;
    128  1.1  thorpej 	short stat;
    129  1.1  thorpej 	int c;
    130  1.1  thorpej 
    131  1.1  thorpej 	if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0)
    132  1.1  thorpej 		return (0);
    133  1.1  thorpej 	c = apci->ap_data;
    134  1.1  thorpej 	return (c);
    135  1.1  thorpej }
    136  1.1  thorpej #else
    137  1.1  thorpej int
    138  1.1  thorpej apcigetchar(dev)
    139  1.1  thorpej 	dev_t dev;
    140  1.1  thorpej {
    141  1.1  thorpej 	return (0);
    142  1.1  thorpej }
    143  1.1  thorpej #endif
    144  1.1  thorpej 
    145  1.1  thorpej /* ARGSUSED */
    146  1.1  thorpej void
    147  1.1  thorpej apciputchar(dev, c)
    148  1.1  thorpej 	dev_t dev;
    149  1.1  thorpej 	int c;
    150  1.1  thorpej {
    151  1.1  thorpej 	struct apciregs *apci = apcicnaddr;
    152  1.1  thorpej 	int timo;
    153  1.1  thorpej 	short stat;
    154  1.1  thorpej 
    155  1.1  thorpej 	/* wait a reasonable time for the transmitter to come ready */
    156  1.1  thorpej 	timo = 50000;
    157  1.1  thorpej 	while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
    158  1.1  thorpej 		;
    159  1.1  thorpej 	apci->ap_data = c;
    160  1.1  thorpej 	/* wait for this transmission to complete */
    161  1.1  thorpej 	timo = 1000000;
    162  1.1  thorpej 	while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
    163  1.1  thorpej 		;
    164  1.1  thorpej }
    165  1.1  thorpej #endif
    166