1 files changed, 47 insertions, 0 deletions
diff --git a/sys/dev/axgbe/xgbe_osdep.c b/sys/dev/axgbe/xgbe_osdep.c
new file mode 100644
index 000000000000..fae47fcfcba2
--- /dev/null
+++ b/sys/dev/axgbe/xgbe_osdep.c
@@ -0,0 +1,47 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Advanced Micro Devices, Inc.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * Contact Information :
+ * Rajesh Kumar <rajesh1.kumar@amd.com>
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include "xgbe.h"
+#include "xgbe_osdep.h"
+
+/* Bit Reversal - http://aggregate.org/MAGIC/#Bit%20Reversal */
+uint32_t bitrev32(uint32_t x)
+{
+        x = (((x & 0xaaaaaaaa) >> 1) | ((x & 0x55555555) << 1));
+        x = (((x & 0xcccccccc) >> 2) | ((x & 0x33333333) << 2));
+        x = (((x & 0xf0f0f0f0) >> 4) | ((x & 0x0f0f0f0f) << 4));
+        x = (((x & 0xff00ff00) >> 8) | ((x & 0x00ff00ff) << 8));
+
+        return ((x >> 16) | (x << 16));
+}