Initial Spring 2016 commit.

2015-12-23 00:50:04 +00:00
commit cafa9f5690
732 changed files with 92195 additions and 0 deletions
--- a/kern/dev/lamebus/lrandom.c
+++ b/kern/dev/lamebus/lrandom.c
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
+ *	The President and Fellows of Harvard College.
+ *
+ * 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. Neither the name of the University 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 UNIVERSITY 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 UNIVERSITY 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.
+ */
+
+/*
+ * Driver for LAMEbus random generator card
+ */
+#include <types.h>
+#include <lib.h>
+#include <uio.h>
+#include <platform/bus.h>
+#include <lamebus/lrandom.h>
+#include "autoconf.h"
+
+/* Registers (offsets within slot) */
+#define LR_REG_RAND   0     /* random register */
+
+/* Constants */
+#define LR_RANDMAX  0xffffffff
+
+int
+config_lrandom(struct lrandom_softc *lr, int lrandomno)
+{
+	(void)lrandomno;
+	(void)lr;
+	return 0;
+}
+
+uint32_t
+lrandom_random(void *devdata)
+{
+	struct lrandom_softc *lr = devdata;
+	return bus_read_register(lr->lr_bus, lr->lr_buspos, LR_REG_RAND);
+}
+
+uint32_t
+lrandom_randmax(void *devdata)
+{
+	(void)devdata;
+	return LR_RANDMAX;
+}
+
+int
+lrandom_read(void *devdata, struct uio *uio)
+{
+	struct lrandom_softc *lr = devdata;
+	uint32_t val;
+	int result;
+
+	while (uio->uio_resid > 0) {
+		val = bus_read_register(lr->lr_bus, lr->lr_buspos,
+					  LR_REG_RAND);
+		result = uiomove(&val, sizeof(val), uio);
+		if (result) {
+			return result;
+		}
+	}
+
+	return 0;
+}