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85 lines
2.6 KiB
85 lines
2.6 KiB
/***********************license start*************** |
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* Author: Cavium Networks |
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* |
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* Contact: [email protected] |
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* This file is part of the OCTEON SDK |
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* |
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* Copyright (c) 2003-2008 Cavium Networks |
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* |
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* This file is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License, Version 2, as |
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* published by the Free Software Foundation. |
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* |
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* This file is distributed in the hope that it will be useful, but |
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or |
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* NONINFRINGEMENT. See the GNU General Public License for more |
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* details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this file; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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* or visit http://www.gnu.org/licenses/. |
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* |
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* This file may also be available under a different license from Cavium. |
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* Contact Cavium Networks for more information |
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***********************license end**************************************/ |
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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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#include <asm/octeon/octeon.h> |
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#include <asm/octeon/cvmx-config.h> |
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#include <asm/octeon/cvmx-helper.h> |
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#include <asm/octeon/cvmx-pip-defs.h> |
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/** |
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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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* @interface: Interface to probe |
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* |
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* Returns 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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union cvmx_ipd_sub_port_fcs 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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union cvmx_pip_prt_cfgx 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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* 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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* @interface: Interface to bring up |
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* |
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* Returns 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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