160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/* $NetBSD: leds.c,v 1.3 2003/07/15 02:15:07 lukem Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Gordon W. Ross and der Mouse.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Functions to flash the LEDs with some pattern.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: leds.c,v 1.3 2003/07/15 02:15:07 lukem Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <machine/cpu.h>
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#include <machine/sid.h>
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#include <machine/leds.h>
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#include "opt_cputype.h"
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static volatile u_short *diagreg = 0;
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static u_char led_countdown = 0;
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static u_char led_px = 0;
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/*
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* Initial value is the default pattern set.
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*/
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static struct led_patterns ledpat = {
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16, /* divisor */
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12, /* patlen */
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{ /* patterns */
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0x03, 0x06, 0x0c, 0x18,
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0x30, 0x60, 0xc0, 0x60,
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0x30, 0x18, 0x0c, 0x06,
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}
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};
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void
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ledsattach(int a)
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{
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switch (vax_boardtype) {
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#if VAX46 || VAXANY
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case VAX_BTYP_46: {
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extern struct vs_cpu *ka46_cpu;
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diagreg = (volatile u_short *)(&ka46_cpu->vc_diagdsp);
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break;
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}
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#endif
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#if VAX48 || VAXANY
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case VAX_BTYP_48: {
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extern struct vs_cpu *ka48_cpu;
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diagreg = (volatile u_short *)(&ka48_cpu->vc_diagdsp);
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break;
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}
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#endif
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#if VAX49 || VAXANY
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case VAX_BTYP_49:
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diagreg = (volatile u_short *)vax_map_physmem(0x25800000, 1);
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diagreg += 2;
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break;
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#endif
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default:
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return;
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}
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/* Turn on some lights. */
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leds_intr();
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}
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/*
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* This is called by the clock interrupt.
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*/
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void
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leds_intr()
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{
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register u_char i;
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if (diagreg == 0)
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return;
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if (led_countdown) {
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led_countdown--;
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return;
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}
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led_countdown = ledpat.divisor - 1;
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i = led_px;
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*diagreg = ~ledpat.pat[i];
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i = i+1;
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if (i == ledpat.patlen)
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i = 0;
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led_px = i;
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}
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/*
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* This is called by mem.c to handle /dev/leds
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*/
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int
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leds_uio(struct uio *uio)
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{
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int cnt, error;
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int off; /* NOT off_t */
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caddr_t va;
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off = uio->uio_offset;
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if ((off < 0) || (off > sizeof(ledpat)))
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return (EIO);
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cnt = min(uio->uio_resid, (sizeof(ledpat) - off));
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if (cnt == 0)
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return (0); /* EOF */
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va = ((char*)(&ledpat)) + off;
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error = uiomove(va, cnt, uio);
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return (error);
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}
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