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 28 /* 29 * A few defines are used to control the operation of this driver: 30 * USE_ASYNC_IOBDMA 31 * Use asynchronous IO access to hardware. This uses Octeon's asynchronous 32 * IOBDMAs to issue IO accesses without stalling. Set this to zero 33 * to disable this. Note that IOBDMAs require CVMSEG. 34 * REUSE_SKBUFFS_WITHOUT_FREE 35 * Allows the TX path to free an skbuff into the FPA hardware pool. This 36 * can significantly improve performance for forwarding and bridging, but 37 * may be somewhat dangerous. Checks are made, but if any buffer is reused 38 * without the proper Linux cleanup, the networking stack may have very 39 * bizarre bugs. 40 */ 41 #ifndef __ETHERNET_DEFINES_H__ 42 #define __ETHERNET_DEFINES_H__ 43 44 #include <asm/octeon/cvmx-config.h> 45 46 47 #define OCTEON_ETHERNET_VERSION "1.9" 48 49 #ifdef CONFIG_NETFILTER 50 #define REUSE_SKBUFFS_WITHOUT_FREE 0 51 #else 52 #define REUSE_SKBUFFS_WITHOUT_FREE 1 53 #endif 54 55 #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) 56 57 /* Maximum number of SKBs to try to free per xmit packet. */ 58 #define MAX_OUT_QUEUE_DEPTH 1000 59 60 #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) 61 #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) 62 63 #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) 64 65 66 #endif /* __ETHERNET_DEFINES_H__ */ 67