Start on a basic ACPI framework -- does not do much more than read out the

ACPI tables into kernel memory and attach ACPI and HPET timers currently.

In order to test this code, enabling the devices in GENERIC as well as
the ACPI_ENABLE option is needed.  This code does not do any thermal
control yet, so this should be done with care depending on the platform.

In the tree so more people can contribute to making this more fully
featured.

Ok niklas@ grange@ tedu@

1 files changed, 42 insertions, 0 deletions

diff --git a/sys/dev/acpi/acpiutil.c b/sys/dev/acpi/acpiutil.c
new file mode 100644
index 00000000000..c364c97d03b
--- /dev/null
+++ b/sys/dev/acpi/acpiutil.c
@@ -0,0 +1,42 @@
+/*	$OpenBSD: acpiutil.c,v 1.1 2005/06/02 20:09:39 tholo Exp $	*/
+/*
+ * Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+
+#include <dev/acpi/acpireg.h>
+#include <dev/acpi/acpivar.h>
+
+u_int
+acpi_checksum(const void *v, size_t len)
+{
+	const u_char *p = v;
+	u_char s;
+	int i;
+
+	s = 0;
+	for (i = 0; i < len; i++)
+		s += p[i];
+
+	if (s)
+	    printf("acpi: bad checksum at %p\n", v);
+
+	return (s);
+}