xref: /netbsd-src/sys/arch/news68k/dev/ms_hb.c (revision c7fb772b85b2b5d4cfb282f868f454b4701534fd)
1 /*	$NetBSD: ms_hb.c,v 1.16 2021/08/07 16:19:00 thorpej Exp $	*/
2 
3 /*-
4  * Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 /*-
28  * Copyright (c) 2000 Tsubai Masanari.  All rights reserved.
29  *
30  * Redistribution and use in source and binary forms, with or without
31  * modification, are permitted provided that the following conditions
32  * are met:
33  * 1. Redistributions of source code must retain the above copyright
34  *    notice, this list of conditions and the following disclaimer.
35  * 2. Redistributions in binary form must reproduce the above copyright
36  *    notice, this list of conditions and the following disclaimer in the
37  *    documentation and/or other materials provided with the distribution.
38  * 3. The name of the author may not be used to endorse or promote products
39  *    derived from this software without specific prior written permission.
40  *
41  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
42  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
43  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
44  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
45  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
47  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
48  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
49  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
50  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
51  */
52 
53 #include <sys/cdefs.h>
54 __KERNEL_RCSID(0, "$NetBSD: ms_hb.c,v 1.16 2021/08/07 16:19:00 thorpej Exp $");
55 
56 #include <sys/param.h>
57 #include <sys/device.h>
58 #include <sys/systm.h>
59 
60 #include <dev/wscons/wsconsio.h>
61 #include <dev/wscons/wsmousevar.h>
62 
63 #include <machine/bus.h>
64 #include <machine/cpu.h>
65 
66 #include <news68k/dev/hbvar.h>
67 #include <news68k/dev/ms_hbreg.h>
68 #include <news68k/dev/msvar.h>
69 
70 #include <news68k/news68k/isr.h>
71 
72 #define MS_SIZE 0x10 /* XXX */
73 #define MS_IPL 5
74 
75 static int ms_hb_match(device_t, cfdata_t, void *);
76 static void ms_hb_attach(device_t, device_t, void *);
77 static void ms_hb_init(struct ms_softc *);
78 int ms_hb_intr(void *);
79 
80 static int ms_hb_enable(void *);
81 static int ms_hb_ioctl(void *, u_long, void *, int, struct lwp *);
82 static void ms_hb_disable(void *);
83 
84 CFATTACH_DECL_NEW(ms_hb, sizeof(struct ms_softc),
85     ms_hb_match, ms_hb_attach, NULL, NULL);
86 
87 struct wsmouse_accessops ms_hb_accessops = {
88 	ms_hb_enable,
89 	ms_hb_ioctl,
90 	ms_hb_disable
91 };
92 
93 static int
ms_hb_match(device_t parent,cfdata_t cf,void * aux)94 ms_hb_match(device_t parent, cfdata_t cf, void *aux)
95 {
96 	struct hb_attach_args *ha = aux;
97 	u_int addr;
98 
99 	if (strcmp(ha->ha_name, "ms"))
100 		return 0;
101 
102 	/* XXX no default address */
103 	if (ha->ha_address == (u_int)-1)
104 		return 0;
105 
106 	addr = ha->ha_address; /* XXX */
107 
108 	if (badaddr((void *)addr, 1))
109 		return 0;
110 
111 	return 1;
112 }
113 
114 static void
ms_hb_attach(device_t parent,device_t self,void * aux)115 ms_hb_attach(device_t parent, device_t self, void *aux)
116 {
117 	struct ms_softc *sc = device_private(self);
118 	struct hb_attach_args *ha = aux;
119 	bus_space_tag_t bt = ha->ha_bust;
120 	bus_space_handle_t bh;
121 	struct wsmousedev_attach_args wsa;
122 	int ipl;
123 
124 	sc->sc_dev = self;
125 	if (bus_space_map(bt, ha->ha_address, MS_SIZE, 0, &bh) != 0) {
126 		aprint_error(": can't map device space\n");
127 		return;
128 	}
129 
130 	aprint_normal("\n");
131 
132 	sc->sc_bt = bt;
133 	sc->sc_bh = bh;
134 	sc->sc_offset = MS_REG_DATA;
135 	ipl = ha->ha_ipl;
136 	if (ipl == -1)
137 		ipl = MS_IPL;
138 
139 	ms_hb_init(sc);
140 
141 	isrlink_autovec(ms_hb_intr, (void *)sc, ipl, IPL_TTY);
142 
143 	wsa.accessops = &ms_hb_accessops;
144 	wsa.accesscookie = sc;
145 	sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint,
146 	    CFARGS_NONE);
147 }
148 
149 static void
ms_hb_init(struct ms_softc * sc)150 ms_hb_init(struct ms_softc *sc)
151 {
152 	bus_space_tag_t bt = sc->sc_bt;
153 	bus_space_handle_t bh = sc->sc_bh;
154 
155 	bus_space_write_1(bt, bh, MS_REG_RESET, 0);
156 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
157 }
158 
159 int
ms_hb_intr(void * v)160 ms_hb_intr(void *v)
161 {
162 	struct ms_softc *sc = v;
163 	bus_space_tag_t bt = sc->sc_bt;
164 	bus_space_handle_t bh = sc->sc_bh;
165 	int handled = 0;
166 
167 	while ((bus_space_read_1(bt, bh, MS_REG_STAT) & MSSTAT_RDY) != 0) {
168 		ms_intr(sc);
169 		handled = 1;
170 	}
171 	if (handled)
172 		bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
173 
174 	return handled;
175 }
176 
177 static int
ms_hb_enable(void * v)178 ms_hb_enable(void *v)
179 {
180 	struct ms_softc *sc = v;
181 	bus_space_tag_t bt = sc->sc_bt;
182 	bus_space_handle_t bh = sc->sc_bh;
183 
184 	bus_space_write_1(bt, bh, MS_REG_INTE, MS_INTE);
185 
186 	return 0;
187 }
188 
189 static void
ms_hb_disable(void * v)190 ms_hb_disable(void *v)
191 {
192 	struct ms_softc *sc = v;
193 	bus_space_tag_t bt = sc->sc_bt;
194 	bus_space_handle_t bh = sc->sc_bh;
195 
196 	bus_space_write_1(bt, bh, MS_REG_INTE, 0);
197 }
198 
199 static int
ms_hb_ioctl(void * v,u_long cmd,void * data,int flag,struct lwp * l)200 ms_hb_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
201 {
202 
203 	return EPASSTHROUGH;
204 }
205