1/*********************************************************************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
6 *
7 * Copyright (c) 2003-2007 Cavium Networks
8 *
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
12 *
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT.  See the GNU General Public License for more
17 * details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/.
23 *
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26*********************************************************************/
27#include <asm/octeon/cvmx-fau.h>
28
29void cvm_oct_poll_controller(struct net_device *dev);
30void cvm_oct_rx_initialize(void);
31void cvm_oct_rx_shutdown(void);
32
33static inline void cvm_oct_rx_refill_pool(int fill_threshold)
34{
35	int number_to_free;
36	int num_freed;
37	/* Refill the packet buffer pool */
38	number_to_free =
39		cvmx_fau_fetch_and_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
40
41	if (number_to_free > fill_threshold) {
42		cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
43				      -number_to_free);
44		num_freed = cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL,
45						 CVMX_FPA_PACKET_POOL_SIZE,
46						 number_to_free);
47		if (num_freed != number_to_free) {
48			cvmx_fau_atomic_add32(FAU_NUM_PACKET_BUFFERS_TO_FREE,
49					number_to_free - num_freed);
50		}
51	}
52}
53