sys/arch/hpcmips/vr/cmu.c

   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
  60 struct 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
  69 int     vrcmu_match(struct device *, struct cfdata *, void *);
  70 void    vrcmu_attach(struct device *, struct device *, void *);
  71 int     vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int);
  72 int     vrcmu_hardpower(void *, int, long, void *);
  73
  74 CFATTACH_DECL(vrcmu, sizeof(struct vrcmu_softc),
  75     vrcmu_match, vrcmu_attach, NULL, NULL);
  76
  77 int
  78 vrcmu_match(struct device *parent, struct cfdata *cf, void *aux)
  79 {
  80
  81         return (2);             /* 1st attach group of vrip */
  82 }
  83
  84 void
  85 vrcmu_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
 107 int
 108 vrcmu_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
 130 int
 131 vrcmu_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 }