114 lines
3.5 KiB
C
114 lines
3.5 KiB
C
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/***********************license start***************
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* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* * Neither the name of Cavium Networks nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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*
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
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* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
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* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
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* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
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* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
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* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
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* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
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* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
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* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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*
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*
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* For any questions regarding licensing please contact marketing@caviumnetworks.com
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*
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***********************license end**************************************/
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/**
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* @file
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*
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* Functions for LOOP initialization, configuration,
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* and monitoring.
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*
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* <hr>$Revision: 41586 $<hr>
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*/
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#include "executive-config.h"
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#include "cvmx-config.h"
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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#include "cvmx.h"
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#include "cvmx-helper.h"
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/**
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* @INTERNAL
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* Probe a LOOP interface and determine the number of ports
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* connected to it. The LOOP interface should still be down
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* after this call.
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*
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* @param interface Interface to probe
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*
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* @return Number of ports on the interface. Zero to disable.
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*/
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int __cvmx_helper_loop_probe(int interface)
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{
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cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
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int num_ports = 4;
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int port;
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/* We need to disable length checking so packet < 64 bytes and jumbo
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frames don't get errors */
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for (port=0; port<num_ports; port++)
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{
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cvmx_pip_port_cfg_t port_cfg;
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int ipd_port = cvmx_helper_get_ipd_port(interface, port);
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port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
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port_cfg.s.maxerr_en = 0;
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port_cfg.s.minerr_en = 0;
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cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port), port_cfg.u64);
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}
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/* Disable FCS stripping for loopback ports */
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ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
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ipd_sub_port_fcs.s.port_bit2 = 0;
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cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
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return num_ports;
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}
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/**
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* @INTERNAL
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* Bringup and enable a LOOP interface. After this call packet
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* I/O should be fully functional. This is called with IPD
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* enabled but PKO disabled.
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*
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* @param interface Interface to bring up
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*
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* @return Zero on success, negative on failure
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*/
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int __cvmx_helper_loop_enable(int interface)
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{
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/* Do nothing. */
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return 0;
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}
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#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
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