NetBSD/sys/arch/hpcmips/vr/cmu.c

146 lines
4.2 KiB
C

/* $NetBSD: cmu.c,v 1.9 2002/02/02 10:50:08 takemura Exp $ */
/*-
* Copyright (c) 1999 SASAKI Takesi
* Copyright (c) 1999, 2000, 2002 PocketBSD Project. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <mips/cpuregs.h>
#include <machine/bus.h>
#include <machine/debug.h>
#include "opt_vr41xx.h"
#include <hpcmips/vr/vr.h>
#include <hpcmips/vr/vrcpudef.h>
#include <hpcmips/vr/vripif.h>
#include <hpcmips/vr/vripreg.h>
#include <hpcmips/vr/cmureg.h>
#include <machine/config_hook.h>
struct vrcmu_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
config_hook_tag sc_hardpower;
int sc_save;
struct vrcmu_chipset_tag sc_chipset;
};
int vrcmu_match(struct device *, struct cfdata *, void *);
void vrcmu_attach(struct device *, struct device *, void *);
int vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int);
int vrcmu_hardpower(void *, int, long, void *);
struct cfattach vrcmu_ca = {
sizeof(struct vrcmu_softc), vrcmu_match, vrcmu_attach
};
int
vrcmu_match(struct device *parent, struct cfdata *cf, void *aux)
{
return (2); /* 1st attach group of vrip */
}
void
vrcmu_attach(struct device *parent, struct device *self, void *aux)
{
struct vrip_attach_args *va = aux;
struct vrcmu_softc *sc = (void *)self;
sc->sc_iot = va->va_iot;
sc->sc_chipset.cc_sc = sc;
sc->sc_chipset.cc_clock = vrcmu_supply;
if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
0 /* no flags */, &sc->sc_ioh)) {
printf(": can't map i/o space\n");
return;
}
printf ("\n");
vrip_register_cmu(va->va_vc, &sc->sc_chipset);
sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
CONFIG_HOOK_PMEVENT_HARDPOWER,
CONFIG_HOOK_SHARE,
vrcmu_hardpower, sc);
}
int
vrcmu_supply(vrcmu_chipset_tag_t cc, u_int16_t mask, int onoff)
{
struct vrcmu_softc *sc = cc->cc_sc;
u_int16_t reg;
reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
#ifdef VRCMU_VERBOSE
printf("cmu register(enter):");
dbg_bit_print(reg);
#endif
if (onoff)
reg |= mask;
else
reg &= ~mask;
bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg);
#ifdef VRCMU_VERBOSE
printf("cmu register(exit) :");
dbg_bit_print(reg);
#endif
return (0);
}
int
vrcmu_hardpower(void *ctx, int type, long id, void *msg)
{
struct vrcmu_softc *sc = ctx;
int why = (int)msg;
switch (why) {
case PWR_STANDBY:
case PWR_SUSPEND:
sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0);
break;
case PWR_RESUME:
bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save);
break;
}
return (0);
}