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Diffstat (limited to 'sys/arch/sparc/dev/led.c')
| -rw-r--r-- | sys/arch/sparc/dev/led.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/sys/arch/sparc/dev/led.c b/sys/arch/sparc/dev/led.c new file mode 100644 index 00000000000..da631ded13c --- /dev/null +++ b/sys/arch/sparc/dev/led.c @@ -0,0 +1,110 @@ +/* $Id: led.c,v 1.1 1998/03/25 07:54:56 jason Exp $ */ + +/* + * Copyright (c) 1998 Jason L. Wright (jason@thought.net) + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Jason Wright + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/device.h> +#include <sys/kernel.h> +#include <sys/systm.h> + +#include <machine/autoconf.h> +#include <machine/ctlreg.h> +#include <sparc/sparc/asm.h> +#include <sparc/dev/led.h> + +/* + * This is the driver for the "led" register available on some Sun4 + * machines. + */ + +static int ledmatch __P((struct device *, void *, void *)); +static void ledattach __P((struct device *, struct device *, void *)); + +struct cfattach led_ca = { + sizeof(struct device), ledmatch, ledattach +}; + +struct cfdriver led_cd = { + NULL, "led", DV_DULL +}; + +extern int sparc_led_blink; /* from machdep */ + +static char led_attached = 0; +static int led_index = 0; +static char led_patterns[] = + { 0xff, 0x7f, 0xbf, 0xdf, 0xef, 0xf7, 0xfb, 0xfd, 0xfe, + 0xff, 0xfe, 0xfd, 0xfb, 0xf7, 0xef, 0xdf, 0xbf, 0x7f, }; + +static int +ledmatch(parent, vcf, aux) + struct device *parent; + void *aux, *vcf; +{ + register struct confargs *ca = aux; + + if (CPU_ISSUN4) + return (strcmp("led", ca->ca_ra.ra_name) == 0); + return (0); +} + +/* ARGSUSED */ +static void +ledattach(parent, self, aux) + struct device *parent, *self; + void *aux; +{ + led_attached = 1; + printf("\n"); +} + +/* + * led_sun4_cycle: + * check to see whether we were configured and whether + * machdep.led_blink != 0, if so, put a new pattern into + * the register. + */ +void +led_sun4_cycle(zero) + void *zero; +{ + int s; + + if (!sparc_led_blink || !led_attached) + return; + led_index = (led_index + 1) % sizeof(led_patterns); + s = splhigh(); + stba(AC_DIAG_REG, ASI_CONTROL, led_patterns[led_index]); + splx(s); + s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 3)); + timeout(led_sun4_cycle, (caddr_t)0, s); +} |