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cmu.c revision 1.2.2.1
      1 /*	$NetBSD: cmu.c,v 1.2.2.1 2001/06/21 19:24:42 nathanw Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 SASAKI Takesi
      5  * Copyright (c) 1999,2000 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/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/device.h>
     41 
     42 #include <mips/cpuregs.h>
     43 
     44 #include <machine/bus.h>
     45 
     46 #include "opt_vr41xx.h"
     47 #include <hpcmips/vr/vr.h>
     48 #include <hpcmips/vr/vrcpudef.h>
     49 #include <hpcmips/vr/vripreg.h>
     50 #include <hpcmips/vr/vripvar.h>
     51 
     52 #include <hpcmips/vr/cmureg.h>
     53 
     54 #include <machine/config_hook.h>
     55 
     56 struct vrcmu_softc {
     57 	struct device sc_dev;
     58 	bus_space_tag_t sc_iot;
     59 	bus_space_handle_t sc_ioh;
     60 	config_hook_tag sc_hardpower;
     61 	int sc_save;
     62 };
     63 
     64 int	vrcmu_match __P((struct device *, struct cfdata *, void *));
     65 void	vrcmu_attach __P((struct device *, struct device *, void *));
     66 int	vrcmu_supply __P((vrcmu_chipset_tag_t, u_int16_t, int));
     67 int	vrcmu_hardpower __P((void *, int, long, void *));
     68 
     69 struct vrcmu_function_tag vrcmu_functions = {
     70 	vrcmu_supply
     71 };
     72 
     73 struct cfattach vrcmu_ca = {
     74 	sizeof(struct vrcmu_softc), vrcmu_match, vrcmu_attach
     75 };
     76 
     77 int
     78 vrcmu_match(parent, cf, aux)
     79 	struct device *parent;
     80 	struct cfdata *cf;
     81 	void *aux;
     82 {
     83 
     84 	return (2);		/* 1st attach group of vrip */
     85 }
     86 
     87 void
     88 vrcmu_attach(parent, self, aux)
     89 	struct device *parent;
     90 	struct device *self;
     91 	void *aux;
     92 {
     93 	struct vrip_attach_args *va = aux;
     94 	struct vrcmu_softc *sc = (void *)self;
     95 
     96 	sc->sc_iot = va->va_iot;
     97 	if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size,
     98 	    0 /* no flags */, &sc->sc_ioh)) {
     99 		printf(": can't map i/o space\n");
    100 		return;
    101 	}
    102 	printf ("\n");
    103 
    104 	vrip_cmu_function_register(va->va_vc, &vrcmu_functions, self);
    105 	sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT,
    106 	    CONFIG_HOOK_PMEVENT_HARDPOWER,
    107 	    CONFIG_HOOK_SHARE,
    108 	    vrcmu_hardpower, sc);
    109 }
    110 
    111 /* For serial console */
    112 void
    113 __vrcmu_supply(mask, onoff)
    114 	u_int16_t mask;
    115 	int onoff;
    116 {
    117 	u_int16_t reg;
    118 	u_int32_t addr;
    119 
    120 	addr = MIPS_PHYS_TO_KSEG1(VRIP_CMU_ADDR);
    121 	reg = *((volatile u_int16_t *)addr);
    122 	if (onoff)
    123 		reg |= mask;
    124 	else
    125 		reg &= ~mask;
    126 	*((volatile u_int16_t *)addr) = reg;
    127 }
    128 
    129 int
    130 vrcmu_supply(cc, mask, onoff)
    131 	vrcmu_chipset_tag_t cc;
    132 	u_int16_t mask;
    133 	int onoff;
    134 {
    135 	struct vrcmu_softc *sc = (void *)cc;
    136 	u_int16_t reg;
    137 
    138 	reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
    139 #ifdef VRCMU_VERBOSE
    140 	printf("cmu register(enter):");
    141 	bitdisp16(reg);
    142 #endif
    143 	if (onoff)
    144 		reg |= mask;
    145 	else
    146 		reg &= ~mask;
    147 	bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg);
    148 #ifdef VRCMU_VERBOSE
    149 	printf("cmu register(exit) :");
    150 	bitdisp16(reg);
    151 #endif
    152 	return (0);
    153 }
    154 
    155 int
    156 vrcmu_hardpower(ctx, type, id, msg)
    157 	void *ctx;
    158 	int type;
    159 	long id;
    160 	void *msg;
    161 {
    162 	struct vrcmu_softc *sc = ctx;
    163 	int why = (int)msg;
    164 
    165 	switch (why) {
    166 	case PWR_STANDBY:
    167 	case PWR_SUSPEND:
    168 		sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0);
    169 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0);
    170 		break;
    171 	case PWR_RESUME:
    172 		bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save);
    173 		break;
    174 	}
    175 	return (0);
    176 }
    177