177 lines
4.6 KiB
C
177 lines
4.6 KiB
C
/* $NetBSD: cmu.c,v 1.4 2001/06/11 05:24:06 enami Exp $ */
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/*-
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* Copyright (c) 1999 SASAKI Takesi
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* Copyright (c) 1999,2000 PocketBSD Project. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the PocketBSD project
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* and its contributors.
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* 4. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <mips/cpuregs.h>
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#include <machine/bus.h>
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#include "opt_vr41xx.h"
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#include <hpcmips/vr/vr.h>
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#include <hpcmips/vr/vrcpudef.h>
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#include <hpcmips/vr/vripreg.h>
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#include <hpcmips/vr/vripvar.h>
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#include <hpcmips/vr/cmureg.h>
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#include <machine/config_hook.h>
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struct vrcmu_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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config_hook_tag sc_hardpower;
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int sc_save;
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};
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int vrcmu_match __P((struct device *, struct cfdata *, void *));
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void vrcmu_attach __P((struct device *, struct device *, void *));
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int vrcmu_supply __P((vrcmu_chipset_tag_t, u_int16_t, int));
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int vrcmu_hardpower __P((void *, int, long, void *));
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struct vrcmu_function_tag vrcmu_functions = {
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vrcmu_supply
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};
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struct cfattach vrcmu_ca = {
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sizeof(struct vrcmu_softc), vrcmu_match, vrcmu_attach
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};
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int
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vrcmu_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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return (2); /* 1st attach group of vrip */
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}
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void
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vrcmu_attach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct vrip_attach_args *va = aux;
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struct vrcmu_softc *sc = (void *)self;
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sc->sc_iot = va->va_iot;
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if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
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0 /* no flags */, &sc->sc_ioh)) {
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printf(": can't map i/o space\n");
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return;
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}
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printf ("\n");
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vrip_cmu_function_register(va->va_vc, &vrcmu_functions, self);
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sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
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CONFIG_HOOK_PMEVENT_HARDPOWER,
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CONFIG_HOOK_SHARE,
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vrcmu_hardpower, sc);
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}
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/* For serial console */
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void
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__vrcmu_supply(mask, onoff)
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u_int16_t mask;
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int onoff;
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{
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u_int16_t reg;
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u_int32_t addr;
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addr = MIPS_PHYS_TO_KSEG1(VRIP_CMU_ADDR);
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reg = *((volatile u_int16_t *)addr);
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if (onoff)
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reg |= mask;
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else
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reg &= ~mask;
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*((volatile u_int16_t *)addr) = reg;
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}
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int
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vrcmu_supply(cc, mask, onoff)
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vrcmu_chipset_tag_t cc;
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u_int16_t mask;
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int onoff;
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{
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struct vrcmu_softc *sc = (void *)cc;
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u_int16_t reg;
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reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
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#ifdef VRCMU_VERBOSE
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printf("cmu register(enter):");
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bitdisp16(reg);
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#endif
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if (onoff)
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reg |= mask;
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else
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reg &= ~mask;
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg);
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#ifdef VRCMU_VERBOSE
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printf("cmu register(exit) :");
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bitdisp16(reg);
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#endif
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return (0);
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}
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int
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vrcmu_hardpower(ctx, type, id, msg)
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void *ctx;
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int type;
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long id;
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void *msg;
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{
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struct vrcmu_softc *sc = ctx;
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int why = (int)msg;
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switch (why) {
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case PWR_STANDBY:
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case PWR_SUSPEND:
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sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0);
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break;
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case PWR_RESUME:
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bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save);
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break;
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}
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return (0);
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}
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