1 files changed, 121 insertions, 0 deletions
diff --git a/sys/dev/thunderbolt/tb_if.m b/sys/dev/thunderbolt/tb_if.m
new file mode 100644
index 000000000000..8b0918811a5d
--- /dev/null
+++ b/sys/dev/thunderbolt/tb_if.m
@@ -0,0 +1,121 @@
+#-
+# 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.
+#
+# $FreeBSD$
+#
+
+#include <sys/bus.h>
+#include <sys/types.h>
+#include <dev/thunderbolt/tb_reg.h>
+
+INTERFACE tb;
+
+CODE {
+	struct nhi_softc;
+
+	int
+	tb_generic_find_ufp(device_t dev, device_t *ufp)
+	{
+		device_t parent;
+
+		parent = device_get_parent(dev);
+		if (parent == NULL)
+			return (EOPNOTSUPP);
+
+		return (TB_FIND_UFP(parent, ufp));
+	}
+
+	int
+	tb_generic_get_debug(device_t dev, u_int *debug)
+	{
+		device_t parent;
+
+		parent = device_get_parent(dev);
+		if (parent == NULL)
+			return (EOPNOTSUPP);
+
+		return (TB_GET_DEBUG(parent, debug));
+	}
+
+}
+
+HEADER {
+	struct nhi_softc;
+
+	struct tb_lcmbox_cmd {
+		uint32_t cmd;
+		uint32_t cmd_resp;
+		uint32_t data_in;
+		uint32_t data_out;
+	};
+
+	int tb_generic_find_ufp(device_t, device_t *);
+	int tb_generic_get_debug(device_t, u_int *);
+}
+
+#
+# Read the LC Mailbox
+#
+METHOD int lc_mailbox {
+	device_t	dev;
+	struct tb_lcmbox_cmd	*cmd;
+};
+
+#
+# Read from the PCIE2CIO port
+#
+METHOD int pcie2cio_read {
+	device_t	dev;
+	u_int		space;
+	u_int		port;
+	u_int		index;
+	uint32_t	*val;
+}
+
+#
+# Write to the PCIE2CIO port
+#
+METHOD int pcie2cio_write {
+	device_t	dev;
+	u_int		space;
+	u_int		port;
+	u_int		index;
+	uint32_t	val;
+}
+
+#
+# Return the device that's the upstream facing port
+#
+METHOD int find_ufp {
+	device_t dev;
+	device_t *ufp;
+} DEFAULT tb_generic_find_ufp;
+
+METHOD int get_debug {
+	device_t dev;
+	u_int *debug;
+} DEFAULT tb_generic_get_debug;