04b6fa8330
facilities as well as support for the Octeon 2 family of SoCs.
XXX Note that with our antediluvian assembler, we can't support some Octeon 2
instructions and fall back to using the old ones instead.
131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 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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* * 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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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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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 OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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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: 49448 $<hr>
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*/
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-config.h>
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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#include <asm/octeon/cvmx-helper.h>
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#endif
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#include <asm/octeon/cvmx-pip-defs.h>
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#else
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#if !defined(__FreeBSD__) || !defined(_KERNEL)
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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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#endif
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#else
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#include "cvmx.h"
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#include "cvmx-helper.h"
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#endif
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#endif
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#ifdef CVMX_ENABLE_PKO_FUNCTIONS
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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_prt_cfgx_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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