Annotation of sys/arch/sparc/dev/led.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: led.c,v 1.12 2006/08/01 18:09:40 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998 Jason L. Wright (jason@thought.net)
! 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
! 18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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 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 IN
! 25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 26: * POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: /*
! 30: * Driver for leds on the 4/100, 4/200, 4/300, and 4/600. (sun4 & sun4m)
! 31: */
! 32:
! 33: #include <sys/param.h>
! 34: #include <sys/systm.h>
! 35: #include <sys/kernel.h>
! 36: #include <sys/errno.h>
! 37: #include <sys/socket.h>
! 38: #include <sys/syslog.h>
! 39: #include <sys/device.h>
! 40: #include <sys/malloc.h>
! 41: #include <sys/timeout.h>
! 42:
! 43: #include <machine/autoconf.h>
! 44: #include <machine/ctlreg.h>
! 45: #include <sparc/sparc/asm.h>
! 46: #include <sparc/cpu.h>
! 47: #include <sparc/sparc/cpuvar.h>
! 48: #include <sparc/dev/led.h>
! 49:
! 50: int ledmatch(struct device *, void *, void *);
! 51: void ledattach(struct device *, struct device *, void *);
! 52: void led_cycle(void *);
! 53:
! 54: struct cfattach led_ca = {
! 55: sizeof (struct led_softc), ledmatch, ledattach
! 56: };
! 57:
! 58: struct cfdriver led_cd = {
! 59: NULL, "led", DV_DULL
! 60: };
! 61:
! 62: static u_int8_t led_pattern[] = {
! 63: 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f,
! 64: 0xbf, 0xdf, 0xef, 0xf7, 0xfb, 0xfd,
! 65: };
! 66:
! 67: struct led_softc *led_sc = NULL;
! 68: extern int sparc_led_blink; /* from machdep */
! 69:
! 70: int
! 71: ledmatch(parent, vcf, aux)
! 72: struct device *parent;
! 73: void *vcf, *aux;
! 74: {
! 75: #if defined(SUN4)
! 76: struct cfdata *cf = vcf;
! 77: #endif
! 78: #if defined(SUN4) || defined(SUN4M)
! 79: struct confargs *ca = aux;
! 80: register struct romaux *ra = &ca->ca_ra;
! 81:
! 82: #if defined(SUN4M)
! 83: if (ca->ca_bustype == BUS_OBIO) {
! 84: if (strcmp("leds", ra->ra_name))
! 85: return (0);
! 86: return (1);
! 87: }
! 88: #endif /* SUN4M */
! 89:
! 90: #if defined(SUN4)
! 91: if (ca->ca_bustype == BUS_MAIN) {
! 92: if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
! 93: return (0);
! 94: if (CPU_ISSUN4)
! 95: return (1);
! 96: return (0);
! 97: }
! 98: #endif /* SUN4 */
! 99: #endif /* SUN4 || SUN4M */
! 100:
! 101: return (0);
! 102: }
! 103:
! 104: void
! 105: ledattach(parent, self, aux)
! 106: struct device *parent, *self;
! 107: void *aux;
! 108: {
! 109: struct confargs *ca = aux;
! 110: struct led_softc *sc = (struct led_softc *)self;
! 111:
! 112: sc->sc_node = ca->ca_ra.ra_node;
! 113:
! 114: timeout_set(&sc->sc_to, led_cycle, sc);
! 115:
! 116: if (CPU_ISSUN4M)
! 117: sc->sc_reg = mapiodev(&(ca->ca_ra.ra_reg[0]), 0,
! 118: ca->ca_ra.ra_reg[0].rr_len);
! 119:
! 120: led_sc = sc;
! 121: if (sparc_led_blink)
! 122: led_cycle(sc);
! 123: printf("\n");
! 124: }
! 125:
! 126: void
! 127: led_cycle(v)
! 128: void *v;
! 129: {
! 130: struct led_softc *sc = v;
! 131: int s;
! 132:
! 133: if (sc == NULL)
! 134: return;
! 135:
! 136: sc->sc_index = (sc->sc_index + 1) %
! 137: (sizeof(led_pattern)/sizeof(led_pattern[0]));
! 138:
! 139: if (sparc_led_blink == 0)
! 140: sc->sc_index = 0;
! 141:
! 142: #if defined(SUN4M)
! 143: if (CPU_ISSUN4M) {
! 144: s = splhigh();
! 145: (*sc->sc_reg) = led_pattern[sc->sc_index] | 0xff00;
! 146: splx(s);
! 147: }
! 148: #endif
! 149:
! 150: #if defined(SUN4)
! 151: if (CPU_ISSUN4) {
! 152: s = splhigh();
! 153: stba(AC_DIAG_REG, ASI_CONTROL, led_pattern[sc->sc_index]);
! 154: splx(s);
! 155: }
! 156: #endif
! 157:
! 158: if (sparc_led_blink != 0) {
! 159: s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 3));
! 160: timeout_add(&sc->sc_to, s);
! 161: }
! 162: }
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