1/***********************license start*************** 2 * Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights 3 * reserved. 4 * 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are 8 * met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * * Redistributions in binary form must reproduce the above 14 * copyright notice, this list of conditions and the following 15 * disclaimer in the documentation and/or other materials provided 16 * with the distribution. 17 18 * * Neither the name of Cavium Inc. nor the names of 19 * its contributors may be used to endorse or promote products 20 * derived from this software without specific prior written 21 * permission. 22 23 * This Software, including technical data, may be subject to U.S. export control 24 * laws, including the U.S. Export Administration Act and its associated 25 * regulations, and may be subject to export or import regulations in other 26 * countries. 27 28 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS" 29 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR 30 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO 31 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR 32 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM 33 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE, 34 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF 35 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR 36 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR 37 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU. 38 ***********************license end**************************************/ 39 40 41 42 43 44 45 46/** 47 * @file 48 * 49 * Functions for LOOP initialization, configuration, 50 * and monitoring. 51 * 52 * <hr>$Revision: 70030 $<hr> 53 */ 54#ifdef CVMX_BUILD_FOR_LINUX_KERNEL 55#include <asm/octeon/cvmx.h> 56#include <asm/octeon/cvmx-config.h> 57#ifdef CVMX_ENABLE_PKO_FUNCTIONS 58#include <asm/octeon/cvmx-helper.h> 59#endif 60#include <asm/octeon/cvmx-pip-defs.h> 61#else 62#if !defined(__FreeBSD__) || !defined(_KERNEL) 63#include "executive-config.h" 64#include "cvmx-config.h" 65#ifdef CVMX_ENABLE_PKO_FUNCTIONS 66 67#include "cvmx.h" 68#include "cvmx-helper.h" 69#endif 70#else 71#include "cvmx.h" 72#include "cvmx-helper.h" 73#endif 74#endif 75#ifdef CVMX_ENABLE_PKO_FUNCTIONS 76 77 78int __cvmx_helper_loop_enumerate(int interface) 79{ 80 return (OCTEON_IS_MODEL(OCTEON_CN68XX) ? 8 : 4); 81} 82 83/** 84 * @INTERNAL 85 * Probe a LOOP interface and determine the number of ports 86 * connected to it. The LOOP interface should still be down 87 * after this call. 88 * 89 * @param interface Interface to probe 90 * 91 * @return Number of ports on the interface. Zero to disable. 92 */ 93int __cvmx_helper_loop_probe(int interface) 94{ 95 return __cvmx_helper_loop_enumerate(interface); 96} 97 98 99/** 100 * @INTERNAL 101 * Bringup and enable a LOOP interface. After this call packet 102 * I/O should be fully functional. This is called with IPD 103 * enabled but PKO disabled. 104 * 105 * @param interface Interface to bring up 106 * 107 * @return Zero on success, negative on failure 108 */ 109int __cvmx_helper_loop_enable(int interface) 110{ 111 cvmx_pip_prt_cfgx_t port_cfg; 112 int num_ports, index; 113 unsigned long offset; 114 115 num_ports = __cvmx_helper_get_num_ipd_ports(interface); 116 117 /* 118 * We need to disable length checking so packet < 64 bytes and jumbo 119 * frames don't get errors 120 */ 121 for (index = 0; index < num_ports; index++) { 122 offset = ((octeon_has_feature(OCTEON_FEATURE_PKND)) ? 123 cvmx_helper_get_pknd(interface, index) : 124 cvmx_helper_get_ipd_port(interface, index)); 125 126 port_cfg.u64 = cvmx_read_csr(CVMX_PIP_PRT_CFGX(offset)); 127 port_cfg.s.maxerr_en = 0; 128 port_cfg.s.minerr_en = 0; 129 cvmx_write_csr(CVMX_PIP_PRT_CFGX(offset), port_cfg.u64); 130 } 131 132 /* 133 * Disable FCS stripping for loopback ports 134 */ 135 if (!octeon_has_feature(OCTEON_FEATURE_PKND)) { 136 cvmx_ipd_sub_port_fcs_t ipd_sub_port_fcs; 137 ipd_sub_port_fcs.u64 = cvmx_read_csr(CVMX_IPD_SUB_PORT_FCS); 138 ipd_sub_port_fcs.s.port_bit2 = 0; 139 cvmx_write_csr(CVMX_IPD_SUB_PORT_FCS, ipd_sub_port_fcs.u64); 140 } 141 142 return 0; 143} 144 145#endif /* CVMX_ENABLE_PKO_FUNCTIONS */ 146 147