| 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 SRIO initialization, configuration, |
| 6 | * and monitoring. |
| 7 | */ |
| 8 | |
| 9 | #ifndef __CVMX_HELPER_SRIO_H__ |
| 10 | #define __CVMX_HELPER_SRIO_H__ |
| 11 | |
| 12 | /** |
| 13 | * @INTERNAL |
| 14 | * Convert interface number to sRIO link number |
| 15 | * per SoC model. |
| 16 | * |
| 17 | * @param xiface Interface to convert |
| 18 | * |
| 19 | * @return Srio link number |
| 20 | */ |
| 21 | int __cvmx_helper_srio_port(int xiface); |
| 22 | |
| 23 | /** |
| 24 | * @INTERNAL |
| 25 | * Probe a SRIO interface and determine the number of ports |
| 26 | * connected to it. The SRIO interface should still be down after |
| 27 | * this call. |
| 28 | * |
| 29 | * @param xiface Interface to probe |
| 30 | * |
| 31 | * @return Number of ports on the interface. Zero to disable. |
| 32 | */ |
| 33 | int __cvmx_helper_srio_probe(int xiface); |
| 34 | |
| 35 | /** |
| 36 | * @INTERNAL |
| 37 | * Bringup and enable a SRIO interface. After this call packet |
| 38 | * I/O should be fully functional. This is called with IPD |
| 39 | * enabled but PKO disabled. |
| 40 | * |
| 41 | * @param xiface Interface to bring up |
| 42 | * |
| 43 | * @return Zero on success, negative on failure |
| 44 | */ |
| 45 | int __cvmx_helper_srio_enable(int xiface); |
| 46 | |
| 47 | /** |
| 48 | * @INTERNAL |
| 49 | * Return the link state of an IPD/PKO port as returned by SRIO link status. |
| 50 | * |
| 51 | * @param ipd_port IPD/PKO port to query |
| 52 | * |
| 53 | * @return Link state |
| 54 | */ |
| 55 | cvmx_helper_link_info_t __cvmx_helper_srio_link_get(int ipd_port); |
| 56 | |
| 57 | /** |
| 58 | * @INTERNAL |
| 59 | * Configure an IPD/PKO port for the specified link state. This |
| 60 | * function does not influence auto negotiation at the PHY level. |
| 61 | * The passed link state must always match the link state returned |
| 62 | * by cvmx_helper_link_get(). It is normally best to use |
| 63 | * cvmx_helper_link_autoconf() instead. |
| 64 | * |
| 65 | * @param ipd_port IPD/PKO port to configure |
| 66 | * @param link_info The new link state |
| 67 | * |
| 68 | * @return Zero on success, negative on failure |
| 69 | */ |
| 70 | int __cvmx_helper_srio_link_set(int ipd_port, cvmx_helper_link_info_t link_info); |
| 71 | |
| 72 | #endif |