usrp2: implemented packet ctrl to read and write slow path packets from the new interface

1 files changed, 47 insertions, 0 deletions

diff --git a/firmware/microblaze/lib/pkt_ctrl.h b/firmware/microblaze/lib/pkt_ctrl.h
new file mode 100644
index 000000000..156fc06dc
--- /dev/null
+++ b/firmware/microblaze/lib/pkt_ctrl.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2010 Ettus Research LLC
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef INCLUDED_PKT_CTRL_H
+#define INCLUDED_PKT_CTRL_H
+
+#include <stddef.h>
+
+/*!
+ * Try to claim an incomming buffer.
+ * \param num_lines filled with the buffer size
+ * \return a pointer to the buffer memory or NULL
+ */
+void *claim_incoming_buffer(size_t *num_lines);
+
+/*!
+ * Release the incoming buffer. Call when done.
+ */
+void release_incoming_buffer(void);
+
+/*!
+ * Claim an outgoing buffer.
+ * \return a pointer to the buffer
+ */
+void *claim_outgoing_buffer(void);
+
+/*!
+ * Commit the outgoing buffer.
+ * \param num_lines how many lines written.
+ */
+void commit_outgoing_buffer(size_t num_lines);
+
+#endif /* INCLUDED_PKT_CTRL_H */