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/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (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 Inc. 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 INC. 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.
***********************license end**************************************/
/**
* @file
*
* Functions for LOOP initialization, configuration,
* and monitoring.
*
* <hr>$Revision: 70030 $<hr>
*/
#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-config.h>
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
#include <asm/octeon/cvmx-helper.h>
#endif
#include <asm/octeon/cvmx-pip-defs.h>
#else
#if !defined(__FreeBSD__) || !defined(_KERNEL)
#include "executive-config.h"
#include "cvmx-config.h"
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
#include "cvmx.h"
#include "cvmx-helper.h"
#endif
#else
#include "cvmx.h"
#include "cvmx-helper.h"
#endif
#endif
#ifdef CVMX_ENABLE_PKO_FUNCTIONS
int __cvmx_helper_loop_enumerate(int interface)
{
return (OCTEON_IS_MODEL(OCTEON_CN68XX) ? 8 : 4);
}
/**
* @INTERNAL
* Probe a LOOP interface and determine the number of ports
* connected to it. The LOOP interface should still be down
* after this call.
*
* @param interface Interface to probe
*
* @return Number of ports on the interface. Zero to disable.
*/
int __cvmx_helper_loop_probe(int interface)
{
return __cvmx_helper_loop_enumerate(interface);
}
/**
* @INTERNAL
* Bringup and enable a LOOP interface. After this call packet
* I/O should be fully functional. This is called with IPD
* enabled but PKO disabled.
*
* @param interface Interface to bring up
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_loop_enable(int interface)
{
cvmx_pip_prt_cfgx_t port_cfg;
int num_ports, index;
unsigned long offset;
num_ports = __cvmx_helper_get_num_ipd_ports(interface);
/*
* We need to disable length checking so packet < 64 bytes and jumbo
* frames don't get errors
*/
for (index = 0; index < num_ports; index++) {
offset = ((octeon_has_feature(OCTEON_FEATURE_PKND)) ?
cvmx_helper_get_pknd(interface, index) :
cvmx_helper_get_ipd_port(interface, index));
port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(offset));
port_cfg.s.maxerr_en = 0;
port_cfg.s.minerr_en = 0;
cvmx_write_csr(CVMX_PIP_PRT_CFGX(offset), port_cfg.u64);
}
/*
* Disable FCS stripping for loopback ports
*/
if (!octeon_has_feature(OCTEON_FEATURE_PKND)) {
cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs;
ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS);
ipd_sub_port_fcs.s.port_bit2 = 0;
cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64);
}
return 0;
}
#endif /* CVMX_ENABLE_PKO_FUNCTIONS */
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