Annotation of sys/arch/hppa/dev/power.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: power.c,v 1.5 2004/06/11 12:53:09 mickey Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2003 Michael Shalayeff
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
! 25: * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
! 26: * THE POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: #include <sys/param.h>
! 30: #include <sys/kernel.h>
! 31: #include <sys/systm.h>
! 32: #include <sys/reboot.h>
! 33: #include <sys/device.h>
! 34: #include <sys/kthread.h>
! 35:
! 36: #include <machine/reg.h>
! 37: #include <machine/pdc.h>
! 38: #include <machine/autoconf.h>
! 39:
! 40: #include <hppa/dev/cpudevs.h>
! 41:
! 42: struct power_softc {
! 43: struct device sc_dev;
! 44: void *sc_ih;
! 45:
! 46: struct proc *sc_thread;
! 47: void (*sc_kicker)(void *);
! 48:
! 49: int sc_dr_cnt;
! 50: paddr_t sc_pwr_reg;
! 51: volatile int sc_interrupted;
! 52: };
! 53:
! 54: int powermatch(struct device *, void *, void *);
! 55: void powerattach(struct device *, struct device *, void *);
! 56:
! 57: struct cfattach power_ca = {
! 58: sizeof(struct power_softc), powermatch, powerattach
! 59: };
! 60:
! 61: struct cfdriver power_cd = {
! 62: NULL, "power", DV_DULL
! 63: };
! 64:
! 65: void power_thread_create(void *v);
! 66: void power_thread_dr(void *v);
! 67: void power_thread_reg(void *v);
! 68: void power_cold_hook_reg(int);
! 69: int power_intr(void *);
! 70:
! 71: int
! 72: powermatch(struct device *parent, void *cfdata, void *aux)
! 73: {
! 74: struct cfdata *cf = cfdata;
! 75: struct confargs *ca = aux;
! 76:
! 77: if (cf->cf_unit > 0 && !strcmp(ca->ca_name, "power"))
! 78: return (0);
! 79:
! 80: return (1);
! 81: }
! 82:
! 83: void
! 84: powerattach(struct device *parent, struct device *self, void *aux)
! 85: {
! 86: struct power_softc *sc = (struct power_softc *)self;
! 87: struct confargs *ca = aux;
! 88:
! 89: switch (cpu_hvers) {
! 90: case HPPA_BOARD_HP712_60:
! 91: case HPPA_BOARD_HP712_80:
! 92: case HPPA_BOARD_HP712_100:
! 93: case HPPA_BOARD_HP712_120:
! 94: sc->sc_kicker = power_thread_dr;
! 95: printf(": DR25\n");
! 96: break;
! 97:
! 98: default:
! 99: if (ca->ca_hpa) {
! 100: extern void (*cold_hook)(int);
! 101:
! 102: sc->sc_pwr_reg = ca->ca_hpa;
! 103: cold_hook = power_cold_hook_reg;
! 104: sc->sc_kicker = power_thread_reg;
! 105: printf("\n");
! 106: } else
! 107: printf(": not available\n");
! 108: break;
! 109: }
! 110:
! 111: if (ca->ca_irq >= 0)
! 112: sc->sc_ih = cpu_intr_establish(IPL_CLOCK, ca->ca_irq,
! 113: power_intr, sc, sc->sc_dev.dv_xname);
! 114:
! 115: if (sc->sc_kicker)
! 116: kthread_create_deferred(power_thread_create, sc);
! 117: }
! 118:
! 119: int
! 120: power_intr(void *v)
! 121: {
! 122: struct power_softc *sc = v;
! 123:
! 124: sc->sc_interrupted = 1;
! 125:
! 126: return (1);
! 127: }
! 128:
! 129: void
! 130: power_thread_create(void *v)
! 131: {
! 132: struct power_softc *sc = v;
! 133:
! 134: if (kthread_create(sc->sc_kicker, sc, &sc->sc_thread,
! 135: sc->sc_dev.dv_xname))
! 136: printf("WARNING: failed to create kernel power thread\n");
! 137: }
! 138:
! 139: void
! 140: power_thread_dr(void *v)
! 141: {
! 142: struct power_softc *sc = v;
! 143: u_int32_t r;
! 144:
! 145: for (;;) {
! 146: mfcpu(DR0_PCXL_SHINT_EN, r); /* XXX don't ask */
! 147: if (r & 0x80000000)
! 148: sc->sc_dr_cnt = 0;
! 149: else
! 150: sc->sc_dr_cnt++;
! 151:
! 152: /*
! 153: * the bit is undampened straight wire from the power
! 154: * switch and thus we have do dampen it ourselves.
! 155: */
! 156: if (sc->sc_dr_cnt == hz / 10)
! 157: boot(RB_POWERDOWN | RB_HALT);
! 158:
! 159: tsleep(v, PWAIT, "drpower", 10);
! 160: }
! 161: }
! 162:
! 163: void
! 164: power_thread_reg(void *v)
! 165: {
! 166: struct power_softc *sc = v;
! 167: u_int32_t r;
! 168:
! 169: for (;;) {
! 170: __asm __volatile("ldwas 0(%1), %0"
! 171: : "=&r" (r) : "r" (sc->sc_pwr_reg));
! 172:
! 173: if (!(r & 1))
! 174: boot(RB_POWERDOWN | RB_HALT);
! 175:
! 176: tsleep(v, PWAIT, "regpower", 10);
! 177: }
! 178: }
! 179:
! 180: void
! 181: power_cold_hook_reg(int on)
! 182: {
! 183: extern struct pdc_power_info pdc_power_info; /* machdep.c */
! 184: int error;
! 185:
! 186: if ((error = pdc_call((iodcio_t)pdc, 0, PDC_SOFT_POWER,
! 187: PDC_SOFT_POWER_ENABLE, &pdc_power_info,
! 188: on == HPPA_COLD_HOT)))
! 189: printf("power_cold_hook_reg: failed (%d)\n", error);
! 190: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to power.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / hppa / dev