109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/* 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
|