xref: /netbsd/sys/dev/hpc/pwctl.c (revision 5f819ca3)
1 /*	$NetBSD: pwctl.c,v 1.20 2012/10/27 17:18:17 chs Exp $	*/
2 
3 /*-
4  * Copyright (c) 1999-2001
5  *         TAKEMURA Shin and PocketBSD Project. All rights reserved.
6  * Copyright (c) 2000,2001
7  *         SATO Kazumi. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  * 3. All advertising materials mentioning features or use of this software
18  *    must display the following acknowledgement:
19  *	This product includes software developed by the PocketBSD project
20  *	and its contributors.
21  * 4. Neither the name of the project nor the names of its contributors
22  *    may be used to endorse or promote products derived from this software
23  *    without specific prior written permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  */
38 
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: pwctl.c,v 1.20 2012/10/27 17:18:17 chs Exp $");
41 
42 #ifdef _KERNEL_OPT
43 #include "opt_pwctl.h"
44 #endif
45 
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/device.h>
49 #include <sys/reboot.h>
50 
51 #include <sys/bus.h>
52 #include <machine/config_hook.h>
53 #include <machine/platid.h>
54 #include <machine/platid_mask.h>
55 
56 #include <dev/hpc/hpciovar.h>
57 
58 #include "locators.h"
59 
60 #ifdef PWCTLDEBUG
61 #ifndef PWCTLDEBUG_CONF
62 #define PWCTLDEBUG_CONF	0
63 #endif
64 int	pwctl_debug = PWCTLDEBUG_CONF;
65 #define	DPRINTF(arg) if (pwctl_debug) printf arg;
66 #define	VPRINTF(arg) if (bootverbose) printf arg;
67 #else
68 #define	DPRINTF(arg)
69 #define	VPRINTF(arg) if (bootverbose) printf arg;
70 #endif
71 
72 struct pwctl_softc {
73 	hpcio_chip_t sc_hc;
74 	int sc_port;
75 	long sc_id;
76 	int sc_on, sc_off;
77 	config_hook_tag sc_hook_tag;
78 	config_hook_tag sc_hook_hardpower;
79 	config_hook_tag sc_ghook_tag;
80 	int sc_save;
81 	int sc_initvalue;
82 };
83 
84 static int	pwctl_match(device_t, cfdata_t, void *);
85 static void	pwctl_attach(device_t, device_t, void *);
86 static int	pwctl_hook(void *, int, long, void *);
87 static int	pwctl_ghook(void *, int, long, void *);
88 int	pwctl_hardpower(void *, int, long, void *);
89 
90 CFATTACH_DECL_NEW(pwctl, sizeof(struct pwctl_softc),
91     pwctl_match, pwctl_attach, NULL, NULL);
92 
93 int
pwctl_match(device_t parent,cfdata_t match,void * aux)94 pwctl_match(device_t parent, cfdata_t match, void *aux)
95 {
96 	struct hpcio_attach_args *haa = aux;
97 	platid_mask_t mask;
98 
99 	if (strcmp(haa->haa_busname, HPCIO_BUSNAME))
100 		return (0);
101 	if (match->cf_loc[HPCIOIFCF_PLATFORM] == 0)
102 		return (0);
103 	mask = PLATID_DEREF(match->cf_loc[HPCIOIFCF_PLATFORM]);
104 	if (!platid_match(&platid, &mask))
105 		return (0);
106 	return (1);
107 }
108 
109 void
pwctl_attach(device_t parent,device_t self,void * aux)110 pwctl_attach(device_t parent, device_t self, void *aux)
111 {
112 	struct hpcio_attach_args *haa = aux;
113 	int *loc;
114 	struct pwctl_softc *sc = device_private(self);
115 
116 	loc = device_cfdata(self)->cf_loc;
117 	sc->sc_hc = (*haa->haa_getchip)(haa->haa_sc, loc[HPCIOIFCF_IOCHIP]);
118 	sc->sc_port = loc[HPCIOIFCF_PORT];
119 	sc->sc_id = loc[HPCIOIFCF_ID];
120 	sc->sc_on = loc[HPCIOIFCF_ACTIVE] ? 1 : 0;
121 	sc->sc_off = loc[HPCIOIFCF_ACTIVE] ? 0 : 1;
122 	sc->sc_initvalue = loc[HPCIOIFCF_INITVALUE];
123 
124 	printf(" port=%d id=%ld on=%d%s",
125 	    sc->sc_port, sc->sc_id, sc->sc_on,
126 	    sc->sc_initvalue == -1 ? "" :
127 	    sc->sc_initvalue ? " init=on" : " init=off");
128 
129 	if (sc->sc_port == HPCIOIFCF_PORT_DEFAULT ||
130 	    sc->sc_id == HPCIOIFCF_ID_DEFAULT) {
131 		printf(" (ignored)");
132 	} else {
133 		sc->sc_hook_tag = config_hook(CONFIG_HOOK_POWERCONTROL,
134 		    sc->sc_id, CONFIG_HOOK_SHARE, pwctl_hook, sc);
135 		sc->sc_ghook_tag = config_hook(CONFIG_HOOK_GET,
136 		    sc->sc_id, CONFIG_HOOK_SHARE, pwctl_ghook, sc);
137 		sc->sc_hook_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
138 		    CONFIG_HOOK_PMEVENT_HARDPOWER, CONFIG_HOOK_SHARE,
139 		    pwctl_hardpower, sc);
140 	}
141 
142 	if (sc->sc_initvalue != -1)
143 		hpcio_portwrite(sc->sc_hc, sc->sc_port,
144 		    sc->sc_initvalue ? sc->sc_on : sc->sc_off);
145 	printf("\n");
146 }
147 
148 int
pwctl_hook(void * ctx,int type,long id,void * msg)149 pwctl_hook(void *ctx, int type, long id, void *msg)
150 {
151 	struct pwctl_softc *sc = ctx;
152 
153 	DPRINTF(("pwctl hook: port %d %s(%d)", sc->sc_port,
154 	    msg ? "ON" : "OFF", msg ? sc->sc_on : sc->sc_off));
155 	hpcio_portwrite(sc->sc_hc, sc->sc_port,
156 	    msg ? sc->sc_on : sc->sc_off);
157 
158 	return (0);
159 }
160 
161 int
pwctl_ghook(void * ctx,int type,long id,void * msg)162 pwctl_ghook(void *ctx, int type, long id, void *msg)
163 {
164 	struct pwctl_softc *sc = ctx;
165 
166 	if (CONFIG_HOOK_VALUEP(msg))
167 		return (1);
168 
169 	*(int*)msg = hpcio_portread(sc->sc_hc, sc->sc_port) == sc->sc_on;
170 	DPRINTF(("pwctl ghook: port %d %s(%d)", sc->sc_port,
171 	    *(int*)msg? "ON" : "OFF", *(int*)msg ? sc->sc_on : sc->sc_off));
172 
173 	return (0);
174 }
175 
176 int
pwctl_hardpower(void * ctx,int type,long id,void * msg)177 pwctl_hardpower(void *ctx, int type, long id, void *msg)
178 {
179 	struct pwctl_softc *sc = ctx;
180 	int why =(int)msg;
181 
182 	VPRINTF(("pwctl hardpower: port %d %s: %s(%d)\n", sc->sc_port,
183 	    why == PWR_RESUME? "resume"
184 	    : why == PWR_SUSPEND? "suspend" : "standby",
185 	    sc->sc_save == sc->sc_on ? "on": "off", sc->sc_save));
186 
187 	switch (why) {
188 	case PWR_STANDBY:
189 		break;
190 	case PWR_SUSPEND:
191 		sc->sc_save = hpcio_portread(sc->sc_hc, sc->sc_port);
192 		hpcio_portwrite(sc->sc_hc, sc->sc_port, sc->sc_off);
193 		break;
194 	case PWR_RESUME:
195 		hpcio_portwrite(sc->sc_hc, sc->sc_port, sc->sc_save);
196 		break;
197 	}
198 
199 	return (0);
200 }
201