1 files changed, 61 insertions, 0 deletions
diff --git a/sys/dev/ntb/ntb_transport.h b/sys/dev/ntb/ntb_transport.h
new file mode 100644
index 0000000..63cdbce
--- /dev/null
+++ b/sys/dev/ntb/ntb_transport.h
@@ -0,0 +1,61 @@
+/*-
+ * Copyright (c) 2016 Alexander Motin <mav@FreeBSD.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+struct ntb_transport_qp;
+
+extern devclass_t ntb_transport_devclass;
+
+enum ntb_link_event {
+	NTB_LINK_DOWN = 0,
+	NTB_LINK_UP,
+};
+
+struct ntb_queue_handlers {
+	void (*rx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+	    void *data, int len);
+	void (*tx_handler)(struct ntb_transport_qp *qp, void *qp_data,
+	    void *data, int len);
+	void (*event_handler)(void *data, enum ntb_link_event status);
+};
+
+int ntb_transport_queue_count(device_t dev);
+struct ntb_transport_qp *
+ntb_transport_create_queue(device_t dev, int q,
+    const struct ntb_queue_handlers *handlers, void *data);
+void ntb_transport_free_queue(struct ntb_transport_qp *qp);
+unsigned char ntb_transport_qp_num(struct ntb_transport_qp *qp);
+unsigned int ntb_transport_max_size(struct ntb_transport_qp *qp);
+int ntb_transport_rx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data,
+			     unsigned int len);
+int ntb_transport_tx_enqueue(struct ntb_transport_qp *qp, void *cb, void *data,
+			     unsigned int len);
+void *ntb_transport_rx_remove(struct ntb_transport_qp *qp, unsigned int *len);
+void ntb_transport_link_up(struct ntb_transport_qp *qp);
+void ntb_transport_link_down(struct ntb_transport_qp *qp);
+bool ntb_transport_link_query(struct ntb_transport_qp *qp);
+unsigned int ntb_transport_tx_free_entry(struct ntb_transport_qp *qp);