Annotation of sys/arch/hp300/stand/common/apci.c, Revision 1.1.1.1
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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