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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | /***********************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; #if 0 /* * Technically CN30XX, CN31XX, and CN50XX contain packet * engines, but nobody ever uses them. Since this is the case, * we disable them here. */ else if (OCTEON_IS_MODEL(OCTEON_CN31XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) return 2; else if (OCTEON_IS_MODEL(OCTEON_CN30XX)) return 1; #endif #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; } |