ucbio.c revision 1.5 1 /* $NetBSD: ucbio.c,v 1.5 2002/01/29 18:53:12 uch Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 /*
40 * Device driver for PHILIPS UCB1200 Advanced modem/audio analog front-end
41 * General Purpose I/O part.
42 */
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/device.h>
47
48 #include <machine/bus.h>
49 #include <machine/intr.h>
50
51 #include <hpcmips/tx/tx39var.h>
52 #include <hpcmips/tx/tx39sibvar.h>
53 #include <hpcmips/tx/tx39sibreg.h>
54
55 #include <hpcmips/dev/ucb1200var.h>
56 #include <hpcmips/dev/ucb1200reg.h>
57
58 #include <dev/hpc/hpciovar.h> /* I/O manager */
59
60 #include <machine/debug.h>
61
62 int ucbio_match(struct device*, struct cfdata *, void *);
63 void ucbio_attach(struct device*, struct device *, void *);
64
65 struct betty_port_status {
66 u_int16_t dir;
67 u_int16_t in, out;
68 };
69
70 struct ucbio_softc {
71 struct device sc_dev;
72 tx_chipset_tag_t sc_tc;
73
74 struct betty_port_status sc_stat, sc_ostat;
75 struct hpcio_chip sc_hc;
76 };
77
78 struct cfattach ucbio_ca = {
79 sizeof(struct ucbio_softc), ucbio_match, ucbio_attach
80 };
81
82 /* I/O */
83 static int betty_in(hpcio_chip_t, int);
84 static void betty_out(hpcio_chip_t, int, int);
85 /* interrupt */
86 static hpcio_intr_handle_t betty_intr_establish(hpcio_chip_t, int, int,
87 int (*)(void *), void *);
88 static void betty_intr_disestablish(hpcio_chip_t, void *);
89 /* debug */
90 static void betty_update(hpcio_chip_t);
91 static void betty_dump(hpcio_chip_t);
92
93 int
94 ucbio_match(struct device *parent, struct cfdata *cf, void *aux)
95 {
96 return (1);
97 }
98
99 void
100 ucbio_attach(struct device *parent, struct device *self, void *aux)
101 {
102 struct ucb1200_attach_args *ucba = aux;
103 struct ucbio_softc *sc = (void *)self;
104 struct hpcio_chip *hc = &sc->sc_hc;
105
106 sc->sc_tc = ucba->ucba_tc;
107 printf("\n");
108
109 hc->hc_sc = sc;
110 hc->hc_chipid = 2;
111 hc->hc_name = "UCB1200";
112 hc->hc_portread = betty_in;
113 hc->hc_portwrite = betty_out;
114 hc->hc_intr_establish = betty_intr_establish;
115 hc->hc_intr_disestablish = betty_intr_disestablish;
116 hc->hc_update = betty_update;
117 hc->hc_dump = betty_dump;
118
119 tx_conf_register_ioman(sc->sc_tc, hc);
120
121 hpcio_update(hc);
122 hpcio_dump(hc);
123 }
124
125 /* basic I/O */
126 static void
127 betty_out(hpcio_chip_t hc, int port, int onoff)
128 {
129 struct ucbio_softc *sc = hc->hc_sc;
130 tx_chipset_tag_t tc = sc->sc_tc;
131 txreg_t reg, pos;
132
133 pos = 1 << port;
134 reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
135 if (onoff)
136 reg |= pos;
137 else
138 reg &= ~pos;
139 txsibsf0_reg_write(tc, UCB1200_IO_DATA_REG, reg);
140 }
141
142 static int
143 betty_in(hpcio_chip_t hc, int port)
144 {
145 struct ucbio_softc *sc = hc->hc_sc;
146 tx_chipset_tag_t tc = sc->sc_tc;
147 txreg_t reg = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
148
149 return (reg & (1 << port));
150 }
151
152 /* interrupt method not implemented */
153 static hpcio_intr_handle_t
154 betty_intr_establish(hpcio_chip_t hc, int port, int mode, int (*func)(void *),
155 void *func_arg)
156 {
157 struct ucbio_softc *sc = hc->hc_sc;
158
159 printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname,
160 __FUNCTION__);
161
162 return (0);
163 }
164
165 static void
166 betty_intr_disestablish(hpcio_chip_t hc, void *ih)
167 {
168 struct ucbio_softc *sc = hc->hc_sc;
169
170 printf("%s: %s not implemented.\n", sc->sc_dev.dv_xname,
171 __FUNCTION__);
172 }
173
174 /* debug */
175 static void
176 betty_update(hpcio_chip_t hc)
177 {
178 struct ucbio_softc *sc = hc->hc_sc;
179 tx_chipset_tag_t tc = sc->sc_tc;
180 struct betty_port_status *stat = &sc->sc_stat;
181 u_int16_t dir, data;
182
183 sc->sc_ostat = *stat; /* save old status */
184 dir = stat->dir = txsibsf0_reg_read(tc, UCB1200_IO_DIR_REG);
185 data = txsibsf0_reg_read(tc, UCB1200_IO_DATA_REG);
186 stat->out = data & dir;
187 stat->in = data & ~dir;
188 }
189
190 static void
191 betty_dump(hpcio_chip_t hc)
192 {
193 #ifdef UCBIO_DEBUG
194 struct ucbio_softc *sc = hc->hc_sc;
195 struct betty_port_status *stat = &sc->sc_stat;
196
197 printf("[BETTY I/O]\n");
198 printf("IN ");
199 dbg_bit_print(stat->in);
200 printf("OUT ");
201 dbg_bit_print(stat->out);
202 printf("DIR ");
203 dbg_bit_print(stat->dir);
204 #endif /* UCBIO_DEBUG */
205 }
206