1 /* $NetBSD: cmu.c,v 1.11 2002/10/02 05:26:52 thorpej 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/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 #include <machine/debug.h> 46 47 #include "opt_vr41xx.h" 48 #include <hpcmips/vr/vr.h> 49 #include <hpcmips/vr/vrcpudef.h> 50 #include <hpcmips/vr/vripif.h> 51 #include <hpcmips/vr/vripreg.h> 52 53 #include <hpcmips/vr/cmureg.h> 54 55 #include <machine/config_hook.h> 56 57 struct vrcmu_softc { 58 struct device sc_dev; 59 bus_space_tag_t sc_iot; 60 bus_space_handle_t sc_ioh; 61 config_hook_tag sc_hardpower; 62 int sc_save; 63 struct vrcmu_chipset_tag sc_chipset; 64 }; 65 66 int vrcmu_match(struct device *, struct cfdata *, void *); 67 void vrcmu_attach(struct device *, struct device *, void *); 68 int vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int); 69 int vrcmu_hardpower(void *, int, long, void *); 70 71 CFATTACH_DECL(vrcmu, sizeof(struct vrcmu_softc), 72 vrcmu_match, vrcmu_attach, NULL, NULL); 73 74 int 75 vrcmu_match(struct device *parent, struct cfdata *cf, void *aux) 76 { 77 78 return (2); /* 1st attach group of vrip */ 79 } 80 81 void 82 vrcmu_attach(struct device *parent, struct device *self, void *aux) 83 { 84 struct vrip_attach_args *va = aux; 85 struct vrcmu_softc *sc = (void *)self; 86 87 sc->sc_iot = va->va_iot; 88 sc->sc_chipset.cc_sc = sc; 89 sc->sc_chipset.cc_clock = vrcmu_supply; 90 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 91 0 /* no flags */, &sc->sc_ioh)) { 92 printf(": can't map i/o space\n"); 93 return; 94 } 95 printf ("\n"); 96 97 vrip_register_cmu(va->va_vc, &sc->sc_chipset); 98 sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT, 99 CONFIG_HOOK_PMEVENT_HARDPOWER, 100 CONFIG_HOOK_SHARE, 101 vrcmu_hardpower, sc); 102 } 103 104 int 105 vrcmu_supply(vrcmu_chipset_tag_t cc, u_int16_t mask, int onoff) 106 { 107 struct vrcmu_softc *sc = cc->cc_sc; 108 u_int16_t reg; 109 110 reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 111 #ifdef VRCMU_VERBOSE 112 printf("cmu register(enter):"); 113 dbg_bit_print(reg); 114 #endif 115 if (onoff) 116 reg |= mask; 117 else 118 reg &= ~mask; 119 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg); 120 #ifdef VRCMU_VERBOSE 121 printf("cmu register(exit) :"); 122 dbg_bit_print(reg); 123 #endif 124 return (0); 125 } 126 127 int 128 vrcmu_hardpower(void *ctx, int type, long id, void *msg) 129 { 130 struct vrcmu_softc *sc = ctx; 131 int why = (int)msg; 132 133 switch (why) { 134 case PWR_STANDBY: 135 case PWR_SUSPEND: 136 sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 137 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0); 138 break; 139 case PWR_RESUME: 140 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save); 141 break; 142 } 143 return (0); 144 } 145