1 /* $NetBSD: cmu.c,v 1.4 2001/06/11 05:24:06 enami 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