1 /***********************license start*************** 2 * Author: Cavium Networks 3 * 4 * Contact: support@caviumnetworks.com 5 * This file is part of the OCTEON SDK 6 * 7 * Copyright (c) 2003-2008 Cavium Networks 8 * 9 * This file is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License, Version 2, as 11 * published by the Free Software Foundation. 12 * 13 * This file is distributed in the hope that it will be useful, but 14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty 15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or 16 * NONINFRINGEMENT. See the GNU General Public License for more 17 * details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this file; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22 * or visit http://www.gnu.org/licenses/. 23 * 24 * This file may also be available under a different license from Cavium. 25 * Contact Cavium Networks for more information 26 ***********************license end**************************************/ 27 28 /* 29 * Functions for SPI initialization, configuration, 30 * and monitoring. 31 */ 32 #ifndef __CVMX_HELPER_SPI_H__ 33 #define __CVMX_HELPER_SPI_H__ 34 35 /** 36 * Probe a SPI interface and determine the number of ports 37 * connected to it. The SPI interface should still be down after 38 * this call. 39 * 40 * @interface: Interface to probe 41 * 42 * Returns Number of ports on the interface. Zero to disable. 43 */ 44 extern int __cvmx_helper_spi_probe(int interface); 45 extern int __cvmx_helper_spi_enumerate(int interface); 46 47 /** 48 * Bringup and enable a SPI interface. After this call packet I/O 49 * should be fully functional. This is called with IPD enabled but 50 * PKO disabled. 51 * 52 * @interface: Interface to bring up 53 * 54 * Returns Zero on success, negative on failure 55 */ 56 extern int __cvmx_helper_spi_enable(int interface); 57 58 /** 59 * Return the link state of an IPD/PKO port as returned by 60 * auto negotiation. The result of this function may not match 61 * Octeon's link config if auto negotiation has changed since 62 * the last call to cvmx_helper_link_set(). 63 * 64 * @ipd_port: IPD/PKO port to query 65 * 66 * Returns Link state 67 */ 68 extern cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port); 69 70 /** 71 * Configure an IPD/PKO port for the specified link state. This 72 * function does not influence auto negotiation at the PHY level. 73 * The passed link state must always match the link state returned 74 * by cvmx_helper_link_get(). 75 * 76 * @ipd_port: IPD/PKO port to configure 77 * @link_info: The new link state 78 * 79 * Returns Zero on success, negative on failure 80 */ 81 extern int __cvmx_helper_spi_link_set(int ipd_port, 82 cvmx_helper_link_info_t link_info); 83 84 #endif