FreeBSD/Linux Kernel Cross Reference
sys/mips/cavium/octe/ethernet-defines.h

     /*************************************************************************
     Copyright (c) 2003-2007  Cavium Networks (support@cavium.com). All rights
     reserved.
     
     
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions are
     met:
     
        * Redistributions of source code must retain the above copyright
          notice, this list of conditions and the following disclaimer.
    
        * Redistributions in binary form must reproduce the above
          copyright notice, this list of conditions and the following
          disclaimer in the documentation and/or other materials provided
          with the distribution.
    
        * Neither the name of Cavium Networks nor the names of
          its contributors may be used to endorse or promote products
          derived from this software without specific prior written
          permission.
    
    This Software, including technical data, may be subject to U.S. export  control laws, including the U.S. Export Administration Act and its  associated regulations, and may be subject to export or import  regulations in other countries.
    
    TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
    AND WITH ALL FAULTS AND CAVIUM  NETWORKS MAKES NO PROMISES, REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
    
    *************************************************************************/
    /* $FreeBSD: releng/8.4/sys/mips/cavium/octe/ethernet-defines.h 210311 2010-07-20 19:25:11Z jmallett $ */
    
    /*
     * 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_MBUFS_IN_HW
     *      Tells the driver to populate the packet buffers with kernel mbufs.
     *      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.
     */
    #ifndef CONFIG_CAVIUM_RESERVE32
    #define CONFIG_CAVIUM_RESERVE32 0
    #endif
    
    #if CONFIG_CAVIUM_RESERVE32
            #define USE_32BIT_SHARED            1
            #define USE_MBUFS_IN_HW           0
    #else
            #define USE_32BIT_SHARED            0
            #define USE_MBUFS_IN_HW           1
    #endif
    
    #define INTERRUPT_LIMIT             10000   /* Max interrupts per second per core */
    /*#define INTERRUPT_LIMIT             0     *//* Don't limit the number of interrupts */
    #define USE_HW_TCPUDP_CHECKSUM      1
    #define USE_MULTICORE_RECEIVE       1
    #define USE_RED                     1   /* Enable Random Early Dropping under load */
    #if 0
    #define USE_ASYNC_IOBDMA            (CONFIG_CAVIUM_OCTEON_CVMSEG_SIZE > 0)
    #else
    #define USE_ASYNC_IOBDMA            0
    #endif
    #define USE_10MBPS_PREAMBLE_WORKAROUND 1    /* Allow SW based preamble removal at 10Mbps to workaround PHYs giving us bad preambles */
    #define DONT_WRITEBACK(x)           (x) /* Use this to have all FPA frees also tell the L2 not to write data to memory */
    /*#define DONT_WRITEBACK(x)         0   *//* Use this to not have FPA frees control L2 */
    
    #define MAX_RX_PACKETS 120 /* Maximum number of packets to process per interrupt. */
    #define MAX_OUT_QUEUE_DEPTH 1000
    
    #ifndef 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)
   

Cache object: f168713b8fd9edb6ca55cfcd0032abe3