LED blinker for the back panel leds on the 2100/3100.

2 files changed, 172 insertions, 0 deletions

diff --git a/sys/arch/pmax/dev/led.c b/sys/arch/pmax/dev/led.c
new file mode 100644
index 00000000000..991a7dcb2fe
--- /dev/null
+++ b/sys/arch/pmax/dev/led.c
@@ -0,0 +1,133 @@
+/*	$OpenBSD: led.c,v 1.1 1998/06/04 03:49:48 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 L. 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 <pmax/pmax/kn01.h>
+#include <pmax/pmax/pmaxtype.h>
+#include <pmax/dev/led.h>
+
+/*
+ * This is the driver for the "led" register available on the kn01 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
+};
+
+/* from machdep */
+extern int pmax_boardtype;
+
+static char led_attached = 0;
+static int led_index = 0;
+u_short led_current = 0xff;
+int pmax_led_blink;
+
+/*
+ * These led patterns produce a line that scrolls across the display, then
+ * back again.  Note that a value of 0 for a particular bit lights the
+ * corresponding LED, and 1 leaves it dark.
+ */
+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, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct confargs *ca = aux;
+
+	if (pmax_boardtype == DS_PMAX)		/* only handle [23]100 now */
+		return (strcmp("led", ca->ca_name) == 0);
+	return (0);
+}
+
+/* ARGSUSED */
+static void
+ledattach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	led_attached = 1;
+	printf("\n");
+
+	/* In case it's initialized to true... */
+	if (pmax_led_blink)
+		led_pmax_cycle((caddr_t)0);
+}
+
+/*
+ * Check to see whether we were configured and whether machdep.led_blink != 0.
+ * If so, put a new pattern into the register and schedule ourselves to
+ * be called again later.  The timeout is set to: [(1/8) * loadavg] seconds.
+ */
+void
+led_pmax_cycle(zero)
+	void *zero;
+{
+	int s;
+	unsigned short csr;
+
+	if (!led_attached)
+		return;
+
+	if (!pmax_led_blink)
+		led_current = 0xff;
+	else {
+		led_index = (led_index + 1) % sizeof(led_patterns);
+		led_current = led_patterns[led_index] & KN01_CSR_LEDS_MASK;
+	}
+
+	csr = *((volatile u_short *) MIPS_PHYS_TO_KSEG1(KN01_SYS_CSR));
+	csr = (csr & ~KN01_CSR_LEDS_MASK) | led_current;
+	*((volatile u_short *) MIPS_PHYS_TO_KSEG1(KN01_SYS_CSR)) = csr;
+
+	if (pmax_led_blink) {
+		s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 3));
+		timeout(led_pmax_cycle, (caddr_t)0, s);
+	}
+}
diff --git a/sys/arch/pmax/dev/led.h b/sys/arch/pmax/dev/led.h
new file mode 100644
index 00000000000..dceeb9f6843
--- /dev/null
+++ b/sys/arch/pmax/dev/led.h
@@ -0,0 +1,39 @@
+/*	$OpenBSD: led.h,v 1.1 1998/06/04 03:49:48 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 L. 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.
+ */
+
+/*
+ * pmax diag register on kn01 machines.
+ */
+
+extern int pmax_led_blink;
+void led_pmax_cycle __P((void *));