| Aaron Williams | 3bda89d | 2020-12-11 17:05:24 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Copyright (C) 2020 Marvell International Ltd. |
| 4 | * |
| 5 | * Functions for RGMII/GMII/MII initialization, configuration, |
| 6 | * and monitoring. |
| 7 | */ |
| 8 | |
| 9 | #ifndef __CVMX_HELPER_RGMII_H__ |
| 10 | #define __CVMX_HELPER_RGMII_H__ |
| 11 | |
| 12 | /** |
| 13 | * @INTERNAL |
| 14 | * Probe RGMII ports and determine the number present |
| 15 | * |
| 16 | * @param xiface Interface to probe |
| 17 | * |
| 18 | * @return Number of RGMII/GMII/MII ports (0-4). |
| 19 | */ |
| 20 | int __cvmx_helper_rgmii_probe(int xiface); |
| 21 | |
| 22 | /** |
| 23 | * Put an RGMII interface in loopback mode. Internal packets sent |
| 24 | * out will be received back again on the same port. Externally |
| 25 | * received packets will echo back out. |
| 26 | * |
| 27 | * @param port IPD port number to loop. |
| 28 | */ |
| 29 | void cvmx_helper_rgmii_internal_loopback(int port); |
| 30 | |
| 31 | /** |
| 32 | * @INTERNAL |
| 33 | * Configure all of the ASX, GMX, and PKO regsiters required |
| 34 | * to get RGMII to function on the supplied interface. |
| 35 | * |
| 36 | * @param xiface PKO Interface to configure (0 or 1) |
| 37 | * |
| 38 | * @return Zero on success |
| 39 | */ |
| 40 | int __cvmx_helper_rgmii_enable(int xiface); |
| 41 | |
| 42 | /** |
| 43 | * @INTERNAL |
| 44 | * Return the link state of an IPD/PKO port as returned by |
| 45 | * auto negotiation. The result of this function may not match |
| 46 | * Octeon's link config if auto negotiation has changed since |
| 47 | * the last call to cvmx_helper_link_set(). |
| 48 | * |
| 49 | * @param ipd_port IPD/PKO port to query |
| 50 | * |
| 51 | * @return Link state |
| 52 | */ |
| 53 | cvmx_helper_link_info_t __cvmx_helper_gmii_link_get(int ipd_port); |
| 54 | |
| 55 | /** |
| 56 | * @INTERNAL |
| 57 | * Return the link state of an IPD/PKO port as returned by |
| 58 | * auto negotiation. The result of this function may not match |
| 59 | * Octeon's link config if auto negotiation has changed since |
| 60 | * the last call to cvmx_helper_link_set(). |
| 61 | * |
| 62 | * @param ipd_port IPD/PKO port to query |
| 63 | * |
| 64 | * @return Link state |
| 65 | */ |
| 66 | cvmx_helper_link_info_t __cvmx_helper_rgmii_link_get(int ipd_port); |
| 67 | |
| 68 | /** |
| 69 | * @INTERNAL |
| 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 | * @param ipd_port IPD/PKO port to configure |
| 77 | * @param link_info The new link state |
| 78 | * |
| 79 | * @return Zero on success, negative on failure |
| 80 | */ |
| 81 | int __cvmx_helper_rgmii_link_set(int ipd_port, cvmx_helper_link_info_t link_info); |
| 82 | |
| 83 | /** |
| 84 | * @INTERNAL |
| 85 | * Configure a port for internal and/or external loopback. Internal loopback |
| 86 | * causes packets sent by the port to be received by Octeon. External loopback |
| 87 | * causes packets received from the wire to sent out again. |
| 88 | * |
| 89 | * @param ipd_port IPD/PKO port to loopback. |
| 90 | * @param enable_internal |
| 91 | * Non zero if you want internal loopback |
| 92 | * @param enable_external |
| 93 | * Non zero if you want external loopback |
| 94 | * |
| 95 | * @return Zero on success, negative on failure. |
| 96 | */ |
| 97 | int __cvmx_helper_rgmii_configure_loopback(int ipd_port, int enable_internal, int enable_external); |
| 98 | |
| 99 | #endif |