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- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * Copyright (C) 2020 Marvell International Ltd.
- *
- * Functions for XAUI initialization, configuration,
- * and monitoring.
- */
- #ifndef __CVMX_HELPER_XAUI_H__
- #define __CVMX_HELPER_XAUI_H__
- /**
- * @INTERNAL
- * Probe a XAUI interface and determine the number of ports
- * connected to it. The XAUI interface should still be down
- * after this call.
- *
- * @param xiface Interface to probe
- *
- * Return: Number of ports on the interface. Zero to disable.
- */
- int __cvmx_helper_xaui_probe(int xiface);
- int __cvmx_helper_xaui_enumerate(int xiface);
- /**
- * @INTERNAL
- * Bringup and enable a XAUI interface. After this call packet
- * I/O should be fully functional. This is called with IPD
- * enabled but PKO disabled.
- *
- * @param xiface Interface to bring up
- *
- * Return: Zero on success, negative on failure
- */
- int __cvmx_helper_xaui_enable(int xiface);
- /**
- * Retrain XAUI interface.
- *
- * GMX is disabled as part of retraining.
- * While GMX is disabled, new received packets are dropped.
- * If GMX was in the middle of recieving a packet when disabled,
- * that packet will be received before GMX idles.
- * Transmitted packets are buffered normally, but not sent.
- * If GMX was in the middle of transmitting a packet when disabled,
- * that packet will be transmitted before GMX idles.
- *
- * @param interface Interface to retrain
- *
- * Return: Zero on success, negative on failure
- */
- int cvmx_helper_xaui_link_retrain(int interface);
- /**
- * Reinitialize XAUI interface. Does a probe without changing the hardware
- * state.
- *
- * @param interface Interface to reinitialize
- *
- * Return: 0 on success, negative on failure
- */
- int cvmx_helper_xaui_link_reinit(int interface);
- /**
- * @INTERNAL
- * Return the link state of an IPD/PKO port as returned by
- * auto negotiation. The result of this function may not match
- * Octeon's link config if auto negotiation has changed since
- * the last call to cvmx_helper_link_set().
- *
- * @param ipd_port IPD/PKO port to query
- *
- * Return: Link state
- */
- cvmx_helper_link_info_t __cvmx_helper_xaui_link_get(int ipd_port);
- /**
- * @INTERNAL
- * Configure an IPD/PKO port for the specified link state. This
- * function does not influence auto negotiation at the PHY level.
- * The passed link state must always match the link state returned
- * by cvmx_helper_link_get(). It is normally best to use
- * cvmx_helper_link_autoconf() instead.
- *
- * @param ipd_port IPD/PKO port to configure
- * @param link_info The new link state
- *
- * Return: Zero on success, negative on failure
- */
- int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
- /**
- * @INTERNAL
- * Configure a port for internal and/or external loopback. Internal loopback
- * causes packets sent by the port to be received by Octeon. External loopback
- * causes packets received from the wire to sent out again.
- *
- * @param ipd_port IPD/PKO port to loopback.
- * @param enable_internal
- * Non zero if you want internal loopback
- * @param enable_external
- * Non zero if you want external loopback
- *
- * Return: Zero on success, negative on failure.
- */
- int __cvmx_helper_xaui_configure_loopback(int ipd_port, int enable_internal, int enable_external);
- #endif
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