1 /* $NetBSD: cmu.c,v 1.5 2001/09/16 05:32:20 uch 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(struct device *, struct cfdata *, void *); 65 void vrcmu_attach(struct device *, struct device *, void *); 66 int vrcmu_supply(vrcmu_chipset_tag_t, u_int16_t, int); 67 int vrcmu_hardpower(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(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 if (bus_space_map(sc->sc_iot, va->va_addr, va->va_size, 92 0 /* no flags */, &sc->sc_ioh)) { 93 printf(": can't map i/o space\n"); 94 return; 95 } 96 printf ("\n"); 97 98 vrip_cmu_function_register(va->va_vc, &vrcmu_functions, self); 99 sc->sc_hardpower = config_hook(CONFIG_HOOK_PMEVENT, 100 CONFIG_HOOK_PMEVENT_HARDPOWER, 101 CONFIG_HOOK_SHARE, 102 vrcmu_hardpower, sc); 103 } 104 105 /* For serial console */ 106 void 107 __vrcmu_supply(u_int16_t mask, int onoff) 108 { 109 u_int16_t reg; 110 u_int32_t addr; 111 112 addr = MIPS_PHYS_TO_KSEG1(VRIP_CMU_ADDR); 113 reg = *((volatile u_int16_t *)addr); 114 if (onoff) 115 reg |= mask; 116 else 117 reg &= ~mask; 118 *((volatile u_int16_t *)addr) = reg; 119 } 120 121 int 122 vrcmu_supply(vrcmu_chipset_tag_t cc, u_int16_t mask, int onoff) 123 { 124 struct vrcmu_softc *sc = (void *)cc; 125 u_int16_t reg; 126 127 reg = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 128 #ifdef VRCMU_VERBOSE 129 printf("cmu register(enter):"); 130 bitdisp16(reg); 131 #endif 132 if (onoff) 133 reg |= mask; 134 else 135 reg &= ~mask; 136 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, reg); 137 #ifdef VRCMU_VERBOSE 138 printf("cmu register(exit) :"); 139 bitdisp16(reg); 140 #endif 141 return (0); 142 } 143 144 int 145 vrcmu_hardpower(void *ctx, int type, long id, void *msg) 146 { 147 struct vrcmu_softc *sc = ctx; 148 int why = (int)msg; 149 150 switch (why) { 151 case PWR_STANDBY: 152 case PWR_SUSPEND: 153 sc->sc_save = bus_space_read_2(sc->sc_iot, sc->sc_ioh, 0); 154 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, 0); 155 break; 156 case PWR_RESUME: 157 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 0, sc->sc_save); 158 break; 159 } 160 return (0); 161 } 162