Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / octeon / ethernet-rx.h

diff --git a/kernel/drivers/staging/octeon/ethernet-rx.h b/kernel/drivers/staging/octeon/ethernet-rx.h
new file mode 100644 (file)
index 0000000..9240c85
--- /dev/null
+++ b/kernel/drivers/staging/octeon/ethernet-rx.h
@@ -0,0 +1,52 @@
+/*********************************************************************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2007 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+*********************************************************************/
+#include <asm/octeon/cvmx-fau.h>
+
+void cvm_oct_poll_controller(struct net_device *dev);
+void cvm_oct_rx_initialize(void);
+void cvm_oct_rx_shutdown(void);
+
+static inline void cvm_oct_rx_refill_pool(int fill_threshold)
+{
+       int number_to_free;
+       int num_freed;
+       /* Refill the packet buffer pool */
+       number_to_free =
+               cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
+
+       if (number_to_free > fill_threshold) {
+               cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
+                                     -number_to_free);
+               num_freed = cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL,
+                                                CVMX_FPA_PACKET_POOL_SIZE,
+                                                number_to_free);
+               if (num_freed != number_to_free) {
+                       cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
+                                       number_to_free - num_freed);
+               }
+       }
+}