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 * CONFIG_CAVIUM_RESERVE32 31 * This kernel config options controls the amount of memory configured 32 * in a wired TLB entry for all processes to share. If this is set, the 33 * driver will use this memory instead of kernel memory for pools. This 34 * allows 32bit userspace application to access the buffers, but also 35 * requires all received packets to be copied. 36 * CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS 37 * This kernel config option allows the user to control the number of 38 * packet and work queue buffers allocated by the driver. If this is zero, 39 * the driver uses the default from below. 40 * USE_SKBUFFS_IN_HW 41 * Tells the driver to populate the packet buffers with kernel skbuffs. 42 * This allows the driver to receive packets without copying them. It also 43 * means that 32bit userspace can't access the packet buffers. 44 * USE_HW_TCPUDP_CHECKSUM 45 * Controls if the Octeon TCP/UDP checksum engine is used for packet 46 * output. If this is zero, the kernel will perform the checksum in 47 * software. 48 * USE_ASYNC_IOBDMA 49 * Use asynchronous IO access to hardware. This uses Octeon's asynchronous 50 * IOBDMAs to issue IO accesses without stalling. Set this to zero 51 * to disable this. Note that IOBDMAs require CVMSEG. 52 * REUSE_SKBUFFS_WITHOUT_FREE 53 * Allows the TX path to free an skbuff into the FPA hardware pool. This 54 * can significantly improve performance for forwarding and bridging, but 55 * may be somewhat dangerous. Checks are made, but if any buffer is reused 56 * without the proper Linux cleanup, the networking stack may have very 57 * bizarre bugs. 58 */ 59#ifndef __ETHERNET_DEFINES_H__ 60#define __ETHERNET_DEFINES_H__ 61 62#include "cvmx-config.h" 63 64 65#define OCTEON_ETHERNET_VERSION "1.9" 66 67#ifndef CONFIG_CAVIUM_RESERVE32 68#define CONFIG_CAVIUM_RESERVE32 0 69#endif 70 71#define USE_SKBUFFS_IN_HW 1 72#ifdef CONFIG_NETFILTER 73#define REUSE_SKBUFFS_WITHOUT_FREE 0 74#else 75#define REUSE_SKBUFFS_WITHOUT_FREE 1 76#endif 77 78#define USE_HW_TCPUDP_CHECKSUM 1 79 80/* Enable Random Early Dropping under load */ 81#define USE_RED 1 82#define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) 83 84#define USE_10MBPS_PREAMBLE_WORKAROUND 1 85/* 86 * Use this to have all FPA frees also tell the L2 not to write data 87 * to memory. 88 */ 89#define DONT_WRITEBACK(x) (x) 90/* Use this to not have FPA frees control L2 */ 91/*#define DONT_WRITEBACK(x) 0 */ 92 93/* Maximum number of SKBs to try to free per xmit packet. */ 94#define MAX_OUT_QUEUE_DEPTH 1000 95 96#define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) 97#define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) 98 99#define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) 100 101 102#endif /* __ETHERNET_DEFINES_H__ */ 103