1/*	$NetBSD: cmu.c,v 1.11.6.3 2004/09/21 13:16:13 skrll Exp $	*/
2
3/*-
4 * Copyright (c) 1999 SASAKI Takesi
5 * Copyright (c) 1999, 2000, 2002 PocketBSD Project. All rights reserved.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the PocketBSD project
19 *	and its contributors.
20 * 4. Neither the name of the project nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 */
37
38#include <sys/cdefs.h>
39__KERNEL_RCSID(0, "$NetBSD: cmu.c,v 1.11.6.3 2004/09/21 13:16:13 skrll Exp $");
40
41#include <sys/param.h>
42#include <sys/systm.h>
43#include <sys/device.h>
44
45#include <mips/cpuregs.h>
46
47#include <machine/bus.h>
48#include <machine/debug.h>
49
50#include "opt_vr41xx.h"
51#include <hpcmips/vr/vr.h>
52#include <hpcmips/vr/vrcpudef.h>
53#include <hpcmips/vr/vripif.h>
54#include <hpcmips/vr/vripreg.h>
55
56#include <hpcmips/vr/cmureg.h>
57
58#include <machine/config_hook.h>
59
60struct vrcmu_softc {
61	struct device sc_dev;
62	bus_space_tag_t sc_iot;
63	bus_space_handle_t sc_ioh;
64	config_hook_tag sc_hardpower;
65	int sc_save;
66	struct vrcmu_chipset_tag sc_chipset;
67};
68
69int	vrcmu_match(struct device *, struct cfdata *, void *);
70void	vrcmu_attach(struct device *, struct device *, void *);
71int	vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int);
72int	vrcmu_hardpower(void *, int, long, void *);
73
74CFATTACH_DECL(vrcmu, sizeof(struct vrcmu_softc),
75    vrcmu_match, vrcmu_attach, NULL, NULL);
76
77int
78vrcmu_match(struct device *parent, struct cfdata *cf, void *aux)
79{
80
81	return (2);		/* 1st attach group of vrip */
82}
83
84void
85vrcmu_attach(struct device *parent, struct device *self, void *aux)
86{
87	struct vrip_attach_args *va = aux;
88	struct vrcmu_softc *sc = (void *)self;
89
90	sc->sc_iot = va->va_iot;
91	sc->sc_chipset.cc_sc = sc;
92	sc->sc_chipset.cc_clock = vrcmu_supply;
93	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
94	    0 /* no flags */, &sc->sc_ioh)) {
95		printf(": can't map i/o space\n");
96		return;
97	}
98	printf ("\n");
99
100	vrip_register_cmu(va->va_vc, &sc->sc_chipset);
101	sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
102	    CONFIG_HOOK_PMEVENT_HARDPOWER,
103	    CONFIG_HOOK_SHARE,
104	    vrcmu_hardpower, sc);
105}
106
107int
108vrcmu_supply(vrcmu_chipset_tag_t cc, u_int16_t mask, int onoff)
109{
110	struct vrcmu_softc *sc = cc->cc_sc;
111	u_int16_t reg;
112
113	reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
114#ifdef VRCMU_VERBOSE
115	printf("cmu register(enter):");
116	dbg_bit_print(reg);
117#endif
118	if (onoff)
119		reg |= mask;
120	else
121		reg &= ~mask;
122	bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg);
123#ifdef VRCMU_VERBOSE
124	printf("cmu register(exit) :");
125	dbg_bit_print(reg);
126#endif
127	return (0);
128}
129
130int
131vrcmu_hardpower(void *ctx, int type, long id, void *msg)
132{
133	struct vrcmu_softc *sc = ctx;
134	int why = (int)msg;
135
136	switch (why) {
137	case PWR_STANDBY:
138	case PWR_SUSPEND:
139		sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
140		bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0);
141		break;
142	case PWR_RESUME:
143		bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save);
144		break;
145	}
146	return (0);
147}
148