apci.c revision 1.13 1 1.13 tsutsui /* $NetBSD: apci.c,v 1.13 2014/04/17 12:35:24 tsutsui Exp $ */
2 1.2 thorpej
3 1.2 thorpej /*-
4 1.3 thorpej * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
5 1.2 thorpej * All rights reserved.
6 1.2 thorpej *
7 1.2 thorpej * This code is derived from software contributed to The NetBSD Foundation
8 1.2 thorpej * by Jason R. Thorpe.
9 1.2 thorpej *
10 1.2 thorpej * Redistribution and use in source and binary forms, with or without
11 1.2 thorpej * modification, are permitted provided that the following conditions
12 1.2 thorpej * are met:
13 1.2 thorpej * 1. Redistributions of source code must retain the above copyright
14 1.2 thorpej * notice, this list of conditions and the following disclaimer.
15 1.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright
16 1.2 thorpej * notice, this list of conditions and the following disclaimer in the
17 1.2 thorpej * documentation and/or other materials provided with the distribution.
18 1.2 thorpej *
19 1.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 1.2 thorpej * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 1.2 thorpej * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 1.2 thorpej * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 1.2 thorpej * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 1.2 thorpej * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 1.2 thorpej * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 1.2 thorpej * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 1.2 thorpej * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 1.2 thorpej * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 1.2 thorpej * POSSIBILITY OF SUCH DAMAGE.
30 1.2 thorpej */
31 1.1 thorpej
32 1.1 thorpej /*
33 1.11 rmind * Copyright (c) 1988 University of Utah.
34 1.1 thorpej * Copyright (c) 1990, 1993
35 1.1 thorpej * The Regents of the University of California. All rights reserved.
36 1.4 agc *
37 1.4 agc * This code is derived from software contributed to Berkeley by
38 1.4 agc * the Systems Programming Group of the University of Utah Computer
39 1.4 agc * Science Department.
40 1.4 agc *
41 1.4 agc * Redistribution and use in source and binary forms, with or without
42 1.4 agc * modification, are permitted provided that the following conditions
43 1.4 agc * are met:
44 1.4 agc * 1. Redistributions of source code must retain the above copyright
45 1.4 agc * notice, this list of conditions and the following disclaimer.
46 1.4 agc * 2. Redistributions in binary form must reproduce the above copyright
47 1.4 agc * notice, this list of conditions and the following disclaimer in the
48 1.4 agc * documentation and/or other materials provided with the distribution.
49 1.4 agc * 3. Neither the name of the University nor the names of its contributors
50 1.4 agc * may be used to endorse or promote products derived from this software
51 1.4 agc * without specific prior written permission.
52 1.4 agc *
53 1.4 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54 1.4 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55 1.4 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56 1.4 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57 1.4 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58 1.4 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59 1.4 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 1.4 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61 1.4 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62 1.4 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63 1.4 agc * SUCH DAMAGE.
64 1.4 agc *
65 1.4 agc * @(#)dca.c 8.1 (Berkeley) 6/10/93
66 1.4 agc */
67 1.1 thorpej
68 1.1 thorpej #ifdef APCICONSOLE
69 1.1 thorpej #include <sys/param.h>
70 1.1 thorpej #include <dev/cons.h>
71 1.1 thorpej
72 1.6 tsutsui #include <lib/libsa/stand.h>
73 1.6 tsutsui
74 1.1 thorpej #include <hp300/dev/frodoreg.h> /* for APCI offsets */
75 1.9 tsutsui #include <hp300/dev/intioreg.h> /* for frodo offsets */
76 1.1 thorpej
77 1.5 tsutsui #include <hp300/stand/common/apcireg.h> /* for register map */
78 1.5 tsutsui #include <hp300/stand/common/dcareg.h> /* for register bits */
79 1.1 thorpej #include <hp300/stand/common/consdefs.h>
80 1.1 thorpej #include <hp300/stand/common/samachdep.h>
81 1.1 thorpej
82 1.1 thorpej struct apciregs *apcicnaddr = 0;
83 1.1 thorpej
84 1.1 thorpej void
85 1.7 tsutsui apciprobe(struct consdev *cp)
86 1.1 thorpej {
87 1.13 tsutsui volatile uint8_t *frodoregs;
88 1.1 thorpej
89 1.1 thorpej cp->cn_pri = CN_DEAD;
90 1.1 thorpej
91 1.3 thorpej /*
92 1.3 thorpej * Only a 425e can have an APCI console. On all other 4xx models,
93 1.3 thorpej * the "first" serial port is mapped to the DCA at select code 9.
94 1.3 thorpej */
95 1.3 thorpej if (machineid != HP_425 || mmuid != MMUID_425_E)
96 1.1 thorpej return;
97 1.1 thorpej
98 1.13 tsutsui /*
99 1.13 tsutsui * Check the service switch. On the 425e, this is a physical
100 1.13 tsutsui * switch, unlike other frodo-based machines, so we can use it
101 1.13 tsutsui * as a serial vs internal video selector, since the PROM can not
102 1.13 tsutsui * be configured for serial console.
103 1.13 tsutsui */
104 1.13 tsutsui frodoregs = (volatile u_int8_t *)IIOV(INTIOBASE + FRODO_BASE);
105 1.13 tsutsui if (badaddr((char *)frodoregs) == 0 &&
106 1.13 tsutsui (frodoregs[FRODO_IISR] & FRODO_IISR_SERVICE) == 0)
107 1.13 tsutsui cp->cn_pri = CN_REMOTE;
108 1.13 tsutsui else
109 1.13 tsutsui cp->cn_pri = CN_NORMAL;
110 1.13 tsutsui
111 1.1 thorpej #ifdef FORCEAPCICONSOLE
112 1.1 thorpej cp->cn_pri = CN_REMOTE;
113 1.1 thorpej #endif
114 1.1 thorpej curcons_scode = -2;
115 1.13 tsutsui
116 1.13 tsutsui apcicnaddr =
117 1.13 tsutsui (void *)IIOV(INTIOBASE + FRODO_BASE + FRODO_APCI_OFFSET(1));
118 1.1 thorpej }
119 1.1 thorpej
120 1.1 thorpej void
121 1.7 tsutsui apciinit(struct consdev *cp)
122 1.1 thorpej {
123 1.1 thorpej struct apciregs *apci = (struct apciregs *)apcicnaddr;
124 1.1 thorpej
125 1.1 thorpej /*
126 1.1 thorpej * The only system on which this will happen is a 425e,
127 1.1 thorpej * which does not currently have a framebuffer console
128 1.1 thorpej * driver. We use the ROM's output method to let the
129 1.1 thorpej * operator know we're switching to the APCI.
130 1.1 thorpej */
131 1.1 thorpej userom = 1;
132 1.1 thorpej printf("Switching to APCI console.\n");
133 1.1 thorpej userom = 0;
134 1.1 thorpej
135 1.1 thorpej apci->ap_cfcr = CFCR_DLAB;
136 1.1 thorpej apci->ap_data = APCIBRD(9600) & 0xff;
137 1.1 thorpej apci->ap_ier = (APCIBRD(9600) >> 8) & 0xff;
138 1.1 thorpej apci->ap_cfcr = CFCR_8BITS;
139 1.1 thorpej apci->ap_fifo =
140 1.1 thorpej FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER_1;
141 1.1 thorpej apci->ap_mcr = MCR_DTR | MCR_RTS;
142 1.1 thorpej }
143 1.1 thorpej
144 1.1 thorpej /* ARGSUSED */
145 1.1 thorpej #ifndef SMALL
146 1.1 thorpej int
147 1.7 tsutsui apcigetchar(dev_t dev)
148 1.1 thorpej {
149 1.6 tsutsui struct apciregs *apci = apcicnaddr;
150 1.1 thorpej short stat;
151 1.1 thorpej int c;
152 1.1 thorpej
153 1.1 thorpej if (((stat = apci->ap_lsr) & LSR_RXRDY) == 0)
154 1.6 tsutsui return 0;
155 1.1 thorpej c = apci->ap_data;
156 1.6 tsutsui return c;
157 1.1 thorpej }
158 1.1 thorpej #else
159 1.1 thorpej int
160 1.7 tsutsui apcigetchar(dev_t dev)
161 1.1 thorpej {
162 1.6 tsutsui
163 1.6 tsutsui return 0;
164 1.1 thorpej }
165 1.1 thorpej #endif
166 1.1 thorpej
167 1.1 thorpej /* ARGSUSED */
168 1.1 thorpej void
169 1.7 tsutsui apciputchar(dev_t dev, int c)
170 1.1 thorpej {
171 1.1 thorpej struct apciregs *apci = apcicnaddr;
172 1.1 thorpej int timo;
173 1.1 thorpej short stat;
174 1.1 thorpej
175 1.1 thorpej /* wait a reasonable time for the transmitter to come ready */
176 1.1 thorpej timo = 50000;
177 1.1 thorpej while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
178 1.1 thorpej ;
179 1.1 thorpej apci->ap_data = c;
180 1.1 thorpej /* wait for this transmission to complete */
181 1.1 thorpej timo = 1000000;
182 1.1 thorpej while (((stat = apci->ap_lsr) & LSR_TXRDY) == 0 && --timo)
183 1.1 thorpej ;
184 1.1 thorpej }
185 1.1 thorpej #endif
186