137 lines
5.0 KiB
C
137 lines
5.0 KiB
C
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/**********************************************************************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2007 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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**********************************************************************/
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/*
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* A few defines are used to control the operation of this driver:
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* CONFIG_CAVIUM_RESERVE32
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* This kernel config options controls the amount of memory configured
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* in a wired TLB entry for all processes to share. If this is set, the
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* driver will use this memory instead of kernel memory for pools. This
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* allows 32bit userspace application to access the buffers, but also
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* requires all received packets to be copied.
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* CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS
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* This kernel config option allows the user to control the number of
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* packet and work queue buffers allocated by the driver. If this is zero,
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* the driver uses the default from below.
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* USE_SKBUFFS_IN_HW
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* Tells the driver to populate the packet buffers with kernel skbuffs.
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* This allows the driver to receive packets without copying them. It also
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* means that 32bit userspace can't access the packet buffers.
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* USE_32BIT_SHARED
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* This define tells the driver to allocate memory for buffers from the
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* 32bit sahred region instead of the kernel memory space.
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* USE_HW_TCPUDP_CHECKSUM
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* Controls if the Octeon TCP/UDP checksum engine is used for packet
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* output. If this is zero, the kernel will perform the checksum in
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* software.
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* USE_MULTICORE_RECEIVE
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* Process receive interrupts on multiple cores. This spreads the network
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* load across the first 8 processors. If ths is zero, only one core
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* processes incomming packets.
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* USE_ASYNC_IOBDMA
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* Use asynchronous IO access to hardware. This uses Octeon's asynchronous
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* IOBDMAs to issue IO accesses without stalling. Set this to zero
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* to disable this. Note that IOBDMAs require CVMSEG.
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* REUSE_SKBUFFS_WITHOUT_FREE
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* Allows the TX path to free an skbuff into the FPA hardware pool. This
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* can significantly improve performance for forwarding and bridging, but
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* may be somewhat dangerous. Checks are made, but if any buffer is reused
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* without the proper Linux cleanup, the networking stack may have very
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* bizarre bugs.
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*/
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#ifndef __ETHERNET_DEFINES_H__
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#define __ETHERNET_DEFINES_H__
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#include "cvmx-config.h"
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#define OCTEON_ETHERNET_VERSION "1.9"
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#ifndef CONFIG_CAVIUM_RESERVE32
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#define CONFIG_CAVIUM_RESERVE32 0
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#endif
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#if CONFIG_CAVIUM_RESERVE32
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#define USE_32BIT_SHARED 1
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#define USE_SKBUFFS_IN_HW 0
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#define REUSE_SKBUFFS_WITHOUT_FREE 0
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#else
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#define USE_32BIT_SHARED 0
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#define USE_SKBUFFS_IN_HW 1
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#ifdef CONFIG_NETFILTER
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#define REUSE_SKBUFFS_WITHOUT_FREE 0
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#else
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#define REUSE_SKBUFFS_WITHOUT_FREE 1
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#endif
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#endif
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/* Max interrupts per second per core */
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#define INTERRUPT_LIMIT 10000
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/* Don't limit the number of interrupts */
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/*#define INTERRUPT_LIMIT 0 */
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#define USE_HW_TCPUDP_CHECKSUM 1
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#define USE_MULTICORE_RECEIVE 1
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/* Enable Random Early Dropping under load */
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#define USE_RED 1
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#define USE_ASYNC_IOBDMA (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0)
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/*
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* Allow SW based preamble removal at 10Mbps to workaround PHYs giving
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* us bad preambles.
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*/
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#define USE_10MBPS_PREAMBLE_WORKAROUND 1
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/*
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* Use this to have all FPA frees also tell the L2 not to write data
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* to memory.
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*/
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#define DONT_WRITEBACK(x) (x)
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/* Use this to not have FPA frees control L2 */
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/*#define DONT_WRITEBACK(x) 0 */
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/* Maximum number of packets to process per interrupt. */
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#define MAX_RX_PACKETS 120
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/* Maximum number of SKBs to try to free per xmit packet. */
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#define MAX_SKB_TO_FREE 10
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#define MAX_OUT_QUEUE_DEPTH 1000
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#ifndef CONFIG_SMP
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#undef USE_MULTICORE_RECEIVE
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#define USE_MULTICORE_RECEIVE 0
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#endif
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#define IP_PROTOCOL_TCP 6
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#define IP_PROTOCOL_UDP 0x11
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#define FAU_NUM_PACKET_BUFFERS_TO_FREE (CVMX_FAU_REG_END - sizeof(uint32_t))
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#define TOTAL_NUMBER_OF_PORTS (CVMX_PIP_NUM_INPUT_PORTS+1)
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#endif /* __ETHERNET_DEFINES_H__ */
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