1 files changed, 54 insertions, 0 deletions
diff --git a/sys/dev/thunderbolt/tb_var.h b/sys/dev/thunderbolt/tb_var.h
new file mode 100644
index 000000000000..4874c420300e
--- /dev/null
+++ b/sys/dev/thunderbolt/tb_var.h
@@ -0,0 +1,54 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2022 Scott Long
+ * 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.
+ *
+ * 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.
+ *
+ * Thunderbolt firmware connection manager functions.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _TB_VAR_H
+#define _TB_VAR_H
+
+typedef struct {
+	int8_t link;
+	int8_t depth;
+} tb_addr_t;
+
+MALLOC_DECLARE(M_THUNDERBOLT);
+
+#define TB_VENDOR_LEN	48
+#define TB_MODEL_LEN	48
+#define TB_MAX_LINKS	4
+#define TB_MAX_DEPTH	6
+
+static __inline uint32_t
+tb_calc_crc(void *data, u_int len)
+{
+	return ( ~ (calculate_crc32c(~0L, data, len)));
+}
+
+#endif /* _TB_VAR_H */