mirror of https://gitee.com/openkylin/linux.git
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/***********************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 LOOP 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 LOOP interface and determine the number of ports
|
|
* connected to it. The LOOP 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_loop_probe(int interface)
|
|
{
|
|
union cvmx_ipd_sub_port_fcs ipd_sub_port_fcs;
|
|
int num_ports = 4;
|
|
int port;
|
|
|
|
/* We need to disable length checking so packet < 64 bytes and jumbo
|
|
frames don't get errors */
|
|
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);
|
|
}
|
|
|
|
/* Disable FCS stripping for loopback ports */
|
|
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 num_ports;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @interface: Interface to bring up
|
|
*
|
|
* Returns Zero on success, negative on failure
|
|
*/
|
|
int __cvmx_helper_loop_enable(int interface)
|
|
{
|
|
/* Do nothing. */
|
|
return 0;
|
|
}
|