projects / deliverable / linux.git / blame
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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 | ||
| 46 | /** | |
| 47 | * Bringup and enable a SPI interface. After this call packet I/O | |
| 48 | * should be fully functional. This is called with IPD enabled but | |
| 49 | * PKO disabled. | |
| 50 | * | |
| 51 | * @interface: Interface to bring up | |
| 52 | * | |
| 53 | * Returns Zero on success, negative on failure | |
| 54 | */ | |
| 55 | extern int __cvmx_helper_spi_enable(int interface); | |
| 56 | ||
| 57 | /** | |
| 58 | * Return the link state of an IPD/PKO port as returned by | |
| 59 | * auto negotiation. The result of this function may not match | |
| 60 | * Octeon's link config if auto negotiation has changed since | |
| 61 | * the last call to cvmx_helper_link_set(). | |
| 62 | * | |
| 63 | * @ipd_port: IPD/PKO port to query | |
| 64 | * | |
| 65 | * Returns Link state | |
| 66 | */ | |
| 67 | extern cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port); | |
| 68 | ||
| 69 | /** | |
| 70 | * Configure an IPD/PKO port for the specified link state. This | |
| 71 | * function does not influence auto negotiation at the PHY level. | |
| 72 | * The passed link state must always match the link state returned | |
| 73 | * by cvmx_helper_link_get(). It is normally best to use | |
| 74 | * cvmx_helper_link_autoconf() instead. | |
| 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 |