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/**********************************************************************
* 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_32BIT_SHARED
* This define tells the driver to allocate memory for buffers from the
* 32bit sahred region instead of the kernel memory space.
* 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_MULTICORE_RECEIVE
* Process receive interrupts on multiple cores. This spreads the network
* load across the first 8 processors. If ths is zero, only one core
* processes incomming packets.
* 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 "cvmx-config.h"
#define OCTEON_ETHERNET_VERSION "1.9"
#ifndef CONFIG_CAVIUM_RESERVE32
#define CONFIG_CAVIUM_RESERVE32 0
#endif
#if CONFIG_CAVIUM_RESERVE32
#define USE_32BIT_SHARED 1
#define USE_SKBUFFS_IN_HW 0
#define REUSE_SKBUFFS_WITHOUT_FREE 0
#else
#define USE_32BIT_SHARED 0
#define USE_SKBUFFS_IN_HW 1
#ifdef CONFIG_NETFILTER
#define REUSE_SKBUFFS_WITHOUT_FREE 0
#else
#define REUSE_SKBUFFS_WITHOUT_FREE 1
#endif
#endif
/* Max interrupts per second per core */
#define INTERRUPT_LIMIT 10000
/* Don't limit the number of interrupts */
/*#define INTERRUPT_LIMIT 0 */
#define USE_HW_TCPUDP_CHECKSUM 1
#define USE_MULTICORE_RECEIVE 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 packets to process per interrupt. */
#define MAX_RX_PACKETS 120
/* Maximum number of SKBs to try to free per xmit packet. */
#define MAX_SKB_TO_FREE 10
#define MAX_OUT_QUEUE_DEPTH 1000
#ifndef CONFIG_SMP
#undef USE_MULTICORE_RECEIVE
#define USE_MULTICORE_RECEIVE 0
#endif
#define IP_PROTOCOL_TCP 6
#define IP_PROTOCOL_UDP 0x11
#define FAU_NUM_PACKET_BUFFERS_TO_FREE (CVMX_FAU_REG_END - sizeof(uint32_t))
#define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1)
#endif /* __ETHERNET_DEFINES_H__ */
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