1 /* $NetBSD: com_dio.c,v 1.10 2024/01/16 05:48:28 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*-
33 * Copyright (c) 1991 The Regents of the University of California.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 * 3. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 *
60 * @(#)com.c 7.5 (Berkeley) 5/16/91
61 */
62
63 #include <sys/cdefs.h>
64 __KERNEL_RCSID(0, "$NetBSD: com_dio.c,v 1.10 2024/01/16 05:48:28 thorpej Exp $");
65
66 #include <sys/param.h>
67 #include <sys/systm.h>
68 #include <sys/device.h>
69 #include <sys/termios.h>
70 #include <sys/ttydefaults.h>
71
72 #include <machine/bus.h>
73
74 #include <dev/ic/comreg.h>
75 #include <dev/ic/comvar.h>
76
77 #include <hp300/dev/diovar.h>
78 #include <hp300/dev/diodevs.h>
79 #include <hp300/dev/com_dioreg.h>
80 #include <hp300/dev/com_diovar.h>
81
82 struct com_dio_softc {
83 struct com_softc sc_com; /* real "com" softc */
84
85 /* DIO-specific goo. */
86 struct bus_space_tag sc_tag; /* device specific bus space tag */
87 void *sc_ih; /* interrupt handler */
88 };
89
90 static int com_dio_match(device_t, cfdata_t , void *);
91 static void com_dio_attach(device_t, device_t, void *);
92
93 CFATTACH_DECL_NEW(com_dio, sizeof(struct com_dio_softc),
94 com_dio_match, com_dio_attach, NULL, NULL);
95
96 static int com_dio_speed = TTYDEF_SPEED;
97 static struct bus_space_tag comcntag;
98
99 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
100
101 static int
com_dio_match(device_t parent,cfdata_t match,void * aux)102 com_dio_match(device_t parent, cfdata_t match, void *aux)
103 {
104 struct dio_attach_args *da = aux;
105
106 switch (da->da_id) {
107 case DIO_DEVICE_ID_DCA0:
108 case DIO_DEVICE_ID_DCA0REM:
109 case DIO_DEVICE_ID_DCA1:
110 case DIO_DEVICE_ID_DCA1REM:
111 return 1;
112 }
113
114 return 0;
115 }
116
117 static void
com_dio_attach(device_t parent,device_t self,void * aux)118 com_dio_attach(device_t parent, device_t self, void *aux)
119 {
120 struct com_dio_softc *dsc = device_private(self);
121 struct com_softc *sc = &dsc->sc_com;
122 bus_space_tag_t iot;
123 bus_space_handle_t iohdca, iohcom;
124 struct dio_attach_args *da = aux;
125 int isconsole;
126
127 sc->sc_dev = self;
128 isconsole = com_is_console(&comcntag, da->da_addr + DCA_COM_OFFSET,
129 &iohcom);
130
131 if (isconsole) {
132 iot = &comcntag;
133 bus_space_unmap(iot, iohcom, COM_NPORTS);
134 } else {
135 iot = &dsc->sc_tag;
136 memcpy(iot, da->da_bst, sizeof(struct bus_space_tag));
137 dio_set_bus_space_oddbyte(iot);
138 }
139
140 if (bus_space_map(iot, da->da_addr, DCA_SIZE, 0, &iohdca) ||
141 bus_space_subregion(iot, iohdca, DCA_COM_OFFSET,
142 COM_NPORTS << 1, &iohcom)) {
143 aprint_error(": can't map i/o space\n");
144 return;
145 }
146
147 if (!isconsole) {
148 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff);
149 DELAY(1000);
150 }
151
152 com_init_regs(&sc->sc_regs, iot, iohcom,
153 da->da_addr + DCA_COM_OFFSET);
154
155 sc->sc_frequency = COM_DIO_FREQ;
156
157 com_attach_subr(sc);
158
159 dsc->sc_ih = dio_intr_establish(comintr, sc, da->da_ipl, ISRPRI_TTY);
160
161 /* Enable interrupts. */
162 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE);
163 }
164
165 int
com_dio_cnattach(bus_space_tag_t bst,bus_addr_t addr,int scode)166 com_dio_cnattach(bus_space_tag_t bst, bus_addr_t addr, int scode)
167 {
168 bus_space_tag_t iot = &comcntag;
169 bus_space_handle_t iohdca;
170 uint8_t id;
171
172 memcpy(iot, bst, sizeof(struct bus_space_tag));
173 dio_set_bus_space_oddbyte(iot);
174
175 if (bus_space_map(iot, addr, DCA_SIZE, 0, &iohdca))
176 return 1;
177 bus_space_write_1(iot, iohdca, DCA_RESET, 0xff);
178 DELAY(100);
179 bus_space_write_1(iot, iohdca, DCA_IC, IC_IE);
180
181 id = bus_space_read_1(iot, iohdca, DCA_ID);
182 bus_space_unmap(iot, iohdca, DCA_SIZE);
183
184 switch (id) {
185 #ifdef CONSCODE
186 case DCAID0:
187 case DCAID1:
188 #endif
189 case DCAREMID0:
190 case DCAREMID1:
191 break;
192 default:
193 return 1;
194 }
195
196 comcnattach(iot, addr + DCA_COM_OFFSET, com_dio_speed, COM_DIO_FREQ,
197 COM_TYPE_NORMAL, CONMODE);
198
199 return 0;
200 }
201