Annotation of sys/arch/hp300/stand/common/apci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: apci.c,v 1.8 2006/08/17 06:31:10 miod Exp $ */
! 2: /* $NetBSD: apci.c,v 1.2 1997/10/04 17:20:15 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * Copyright (c) 1988 University of Utah.
! 42: * Copyright (c) 1990, 1993
! 43: * The Regents of the University of California. All rights reserved.
! 44: *
! 45: * This code is derived from software contributed to Berkeley by
! 46: * the Systems Programming Group of the University of Utah Computer
! 47: * Science Department.
! 48: *
! 49: * Redistribution and use in source and binary forms, with or without
! 50: * modification, are permitted provided that the following conditions
! 51: * are met:
! 52: * 1. Redistributions of source code must retain the above copyright
! 53: * notice, this list of conditions and the following disclaimer.
! 54: * 2. Redistributions in binary form must reproduce the above copyright
! 55: * notice, this list of conditions and the following disclaimer in the
! 56: * documentation and/or other materials provided with the distribution.
! 57: * 3. Neither the name of the University nor the names of its contributors
! 58: * may be used to endorse or promote products derived from this software
! 59: * without specific prior written permission.
! 60: *
! 61: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 62: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 63: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 64: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 65: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 66: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 67: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 68: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 69: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 70: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 71: * SUCH DAMAGE.
! 72: *
! 73: * @(#)dca.c 8.1 (Berkeley) 6/10/93
! 74: */
! 75:
! 76: #ifdef APCICONSOLE
! 77: #include <sys/param.h>
! 78:
! 79: #include <hp300/dev/frodoreg.h> /* for APCI offsets */
! 80: #include <hp300/dev/apcireg.h> /* for register map */
! 81: #include <hp300/dev/dcareg.h> /* for register bits */
! 82:
! 83: #include "samachdep.h"
! 84: #include "consdefs.h"
! 85:
! 86: struct apciregs *apcicnaddr = 0;
! 87:
! 88: void
! 89: apciprobe(struct consdev *cp)
! 90: {
! 91: volatile u_int8_t *frodoregs;
! 92:
! 93: /*
! 94: * Only a 425e can have an APCI console. On all other 4xx models,
! 95: * the "first" serial port is mapped to the DCA at select code 9.
! 96: */
! 97: if (machineid != HP_425 || mmuid != MMUID_425_E)
! 98: return;
! 99:
! 100: /*
! 101: * Check the service switch. On the 425e, this is a physical
! 102: * switch, unlike other frodo-based machines, so we can use it
! 103: * as a serial vs internal video selector, since the PROM can not
! 104: * be configured for serial console.
! 105: */
! 106: frodoregs = (volatile u_int8_t *)IIOV(FRODO_BASE);
! 107: if (badaddr((caddr_t)frodoregs) == 0 &&
! 108: (frodoregs[FRODO_IISR] & FRODO_IISR_SERVICE) == 0)
! 109: cp->cn_pri = CN_REMOTE;
! 110: else
! 111: cp->cn_pri = CN_NORMAL;
! 112: }
! 113:
! 114: void
! 115: apciinit(struct consdev *cp)
! 116: {
! 117: struct apciregs *apci = (struct apciregs *)apcicnaddr;
! 118:
! 119: apci->ap_cfcr = CFCR_DLAB;
! 120: apci->ap_data = APCIBRD(9600) & 0xff;
! 121: apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff;
! 122: apci->ap_cfcr = CFCR_8BITS;
! 123: apci->ap_fifo =
! 124: FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1;
! 125: apci->ap_mcr = MCR_DTR | MCR_RTS;
! 126: }
! 127:
! 128: /* ARGSUSED */
! 129: int
! 130: apcigetchar(dev_t dev)
! 131: {
! 132: #ifndef SMALL
! 133: struct apciregs *apci = apcicnaddr;
! 134: short stat;
! 135: int c;
! 136:
! 137: if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0)
! 138: return (0);
! 139: c = apci->ap_data;
! 140: return (c);
! 141: #else
! 142: return (0);
! 143: #endif
! 144: }
! 145:
! 146: /* ARGSUSED */
! 147: void
! 148: apciputchar(dev_t dev, int c)
! 149: {
! 150: struct apciregs *apci = apcicnaddr;
! 151: int timo;
! 152: short stat;
! 153:
! 154: /* wait a reasonable time for the transmitter to come ready */
! 155: timo = 50000;
! 156: while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
! 157: ;
! 158: apci->ap_data = c;
! 159: /* wait for this transmission to complete */
! 160: timo = 1000000;
! 161: while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
! 162: ;
! 163: }
! 164: #endif
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