/********************************************************************** * 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 **********************************************************************/ /* * A few defines are used to control the operation of this driver: * CONFIG_CAVIUM_RESERVE32 * This kernel config options controls the amount of memory configured * in a wired TLB entry for all processes to share. If this is set, the * driver will use this memory instead of kernel memory for pools. This * allows 32bit userspace application to access the buffers, but also * requires all received packets to be copied. * CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS * This kernel config option allows the user to control the number of * packet and work queue buffers allocated by the driver. If this is zero, * the driver uses the default from below. * USE_SKBUFFS_IN_HW * Tells the driver to populate the packet buffers with kernel skbuffs. * This allows the driver to receive packets without copying them. It also * means that 32bit userspace can't access the packet buffers. * USE_HW_TCPUDP_CHECKSUM * Controls if the Octeon TCP/UDP checksum engine is used for packet * output. If this is zero, the kernel will perform the checksum in * software. * USE_ASYNC_IOBDMA * Use asynchronous IO access to hardware. This uses Octeon's asynchronous * IOBDMAs to issue IO accesses without stalling. Set this to zero * to disable this. Note that IOBDMAs require CVMSEG. * REUSE_SKBUFFS_WITHOUT_FREE * Allows the TX path to free an skbuff into the FPA hardware pool. This * can significantly improve performance for forwarding and bridging, but * may be somewhat dangerous. Checks are made, but if any buffer is reused * without the proper Linux cleanup, the networking stack may have very * bizarre bugs. */ #ifndef __ETHERNET_DEFINES_H__ #define __ETHERNET_DEFINES_H__ #include #define OCTEON_ETHERNET_VERSION "1.9" #ifndef CONFIG_CAVIUM_RESERVE32 #define CONFIG_CAVIUM_RESERVE32 0 #endif #define USE_SKBUFFS_IN_HW 1 #ifdef CONFIG_NETFILTER #define REUSE_SKBUFFS_WITHOUT_FREE 0 #else #define REUSE_SKBUFFS_WITHOUT_FREE 1 #endif #define USE_HW_TCPUDP_CHECKSUM 1 /* Enable Random Early Dropping under load */ #define USE_RED 1 #define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0) /* * Allow SW based preamble removal at 10Mbps to workaround PHYs giving * us bad preambles. */ #define USE_10MBPS_PREAMBLE_WORKAROUND 1 /* * Use this to have all FPA frees also tell the L2 not to write data * to memory. */ #define DONT_WRITEBACK(x) (x) /* Use this to not have FPA frees control L2 */ /*#define DONT_WRITEBACK(x) 0 */ /* Maximum number of SKBs to try to free per xmit packet. */ #define MAX_OUT_QUEUE_DEPTH 1000 #define FAU_TOTAL_TX_TO_CLEAN (CVMX_FAU_REG_END - sizeof(uint32_t)) #define FAU_NUM_PACKET_BUFFERS_TO_FREE (FAU_TOTAL_TX_TO_CLEAN - sizeof(uint32_t)) #define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1) #endif /* __ETHERNET_DEFINES_H__ */