/***********************license start***************
* Author : Cavium Networks
*
* Contact : support @ caviumnetworks . com
* This file is part of the OCTEON SDK
*
* Copyright ( c ) 2003 - 2008 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
***********************license end**************************************/
/*
* Functions for NPI initialization , configuration ,
* and monitoring .
*/
#include <asm /octeon/octeon.h>
#include <asm /octeon/cvmx-config.h>
#include <asm /octeon/cvmx-helper.h>
#include <asm /octeon/cvmx-pip-defs.h>
/**
* Probe a NPI interface and determine the number of ports
* connected to it . The NPI interface should still be down
* after this call .
*
* @ interface : Interface to probe
*
* Returns Number of ports on the interface . Zero to disable .
*/
int __cvmx_helper_npi_probe(int interface)
{
#if CVMX_PKO_QUEUES_PER_PORT_PCI > 0
if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX))
return 4 ;
else if (OCTEON_IS_MODEL(OCTEON_CN56XX)
&& !OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
/* The packet engines didn't exist before pass 2 */
return 4 ;
else if (OCTEON_IS_MODEL(OCTEON_CN52XX)
&& !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X))
/* The packet engines didn't exist before pass 2 */
return 4 ;
#endif
return 0 ;
}
/**
* Bringup and enable a NPI interface . After this call packet
* I / O should be fully functional . This is called with IPD
* enabled but PKO disabled .
*
* @ interface : Interface to bring up
*
* Returns Zero on success , negative on failure
*/
int __cvmx_helper_npi_enable(int interface)
{
/*
* On CN50XX , CN52XX , and CN56XX we need to disable length
* checking so packet < 64 bytes and jumbo frames don ' t get
* errors .
*/
if (!OCTEON_IS_MODEL(OCTEON_CN3XXX) &&
!OCTEON_IS_MODEL(OCTEON_CN58XX)) {
int num_ports = cvmx_helper_ports_on_interface(interface);
int port;
for (port = 0 ; port < num_ports; port++) {
union cvmx_pip_prt_cfgx port_cfg;
int ipd_port =
cvmx_helper_get_ipd_port(interface, port);
port_cfg.u64 =
cvmx_read_csr(CVMX_PIP_PRT_CFGX(ipd_port));
port_cfg.s.maxerr_en = 0 ;
port_cfg.s.minerr_en = 0 ;
cvmx_write_csr(CVMX_PIP_PRT_CFGX(ipd_port),
port_cfg.u64);
}
}
/* Enables are controlled by the remote host, so nothing to do here */
return 0 ;
}
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(vorverarbeitet am 2026-09-27)
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