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Add /dev/leds (closes PR#2172 from der Mouse)

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gwr 1997-03-18 22:21:50 +00:00
parent 98730721d9
commit c960be72aa
4 changed files with 166 additions and 21 deletions
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3
sys/arch/sun3/conf/files.sun3
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@ -1,4 +1,4 @@
# $NetBSD: files.sun3,v 1.37 1997/03/17 19:46:51 gwr Exp $
# $NetBSD: files.sun3,v 1.38 1997/03/18 22:21:50 gwr Exp $
#
# sun3-specific configuration info
@ -23,6 +23,7 @@ file arch/sun3/sun3/dvma.c
file arch/sun3/sun3/fpu.c
file arch/sun3/sun3/isr.c
file arch/sun3/sun3/kgdb_machdep.c kgdb
file arch/sun3/sun3/leds.c
file arch/sun3/sun3/machdep.c
file arch/sun3/sun3/mem.c
file arch/sun3/sun3/pmap.c

45
sys/arch/sun3/include/leds.h Normal file
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@ -0,0 +1,45 @@
/* $NetBSD: leds.h,v 1.1 1997/03/18 22:21:51 gwr Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross and der Mouse.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/* Data structure supported by /dev/leds */
struct led_patterns {
u_char divisor; /* divides 100 Hz clock (0 means 256). */
u_char patlen; /* patterns to use (0 means 256). */
u_char pat[256]; /* the patters... */
};

23
sys/arch/sun3/sun3/clock.c
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@ -1,4 +1,4 @@
/* $NetBSD: clock.c,v 1.38 1997/03/05 19:00:07 gwr Exp $ */
/* $NetBSD: clock.c,v 1.39 1997/03/18 22:21:53 gwr Exp $ */
/*
* Copyright (c) 1994 Gordon W. Ross
@ -73,7 +73,6 @@
void _isr_clock __P((void)); /* in locore.s */
void clock_intr __P((struct clockframe));
static void frob_leds __P((void));
static volatile void *intersil_va;
@ -269,7 +268,7 @@ setstatclockrate(newhz)
/*
* This is is called by the "custom" interrupt handler.
* Note that we can get ZS interrupts while this runs,
* and those may touch the interrupt_reg, so we have to
* and zshard may touch the interrupt_reg, so we must
* be careful to use the single_inst_* macros to modify
* the interrupt register atomically.
*/
@ -292,23 +291,7 @@ clock_intr(cf)
hardclock(&cf);
/* Entertainment! */
frob_leds();
}
static void
frob_leds()
{
static unsigned char led_pattern = 0xFE;
extern int ticks;
if ((ticks & 7) != 0)
return;
/* XXX - Move this LED frobbing to the idle loop? */
led_pattern = (led_pattern << 1) | 1;
if (led_pattern == 0xFF)
led_pattern = 0xFE;
set_control_byte((char *) DIAG_REG, led_pattern);
leds_intr();
}

116
sys/arch/sun3/sun3/leds.c Normal file
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@ -0,0 +1,116 @@
/* $NetBSD: leds.c,v 1.1 1997/03/18 22:21:52 gwr Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Gordon W. Ross and der Mouse.
*
* 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 the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* Functions to flash the LEDs with some pattern.
* (LED = Light Emitting Diode)
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <machine/autoconf.h>
#include <machine/control.h>
#include <machine/leds.h>
#include <machine/machdep.h>
static u_char led_countdown = 0;
static u_char led_px = 0;
/* Initial value is the default pattern set. */
static struct led_patterns ledpat = {
8, /* divisor */
8, /* patlen */
{ /* patterns */
0xF0, 0xE1, 0xC3, 0x87,
0x0F, 0x1E, 0x3C, 0x78
}
};
/*
* This is called by the clock interrupt.
*/
void
leds_intr()
{
register u_char i;
if (led_countdown) {
led_countdown--;
return;
}
led_countdown = ledpat.divisor - 1;
i = led_px;
set_control_byte((char *) DIAG_REG, ledpat.pat[i]);
i = i+1;
if (i == ledpat.patlen)
i = 0;
led_px = i;
}
/*
* This is called by mem.c to handle /dev/leds
*/
int
leds_uio(struct uio *uio)
{
int cnt, error;
int off; /* NOT off_t */
caddr_t va;
off = uio->uio_offset;
if ((off < 0) || (off > sizeof(ledpat)))
return (EFAULT);
cnt = min(uio->uio_resid, (sizeof(ledpat) - off));
if (cnt == 0)
return (0); /* EOF */
va = ((char*)(&ledpat)) + off;
error = uiomove(va, cnt, uio);
return (error);
}