freebsd-dev/sys/contrib/octeon-sdk/cvmx-helper-spi.h
Juli Mallett dc4ee6ca91 Merge the Cavium Octeon SDK 2.3.0 Simple Executive code and update FreeBSD to
make use of it where possible.

This primarily brings in support for newer hardware, and FreeBSD is not yet
able to support the abundance of IRQs on new hardware and many features in the
Ethernet driver.

Because of the changes to IRQs in the Simple Executive, we have to maintain our
own list of Octeon IRQs now, which probably can be pared-down and be specific
to the CIU interrupt unit soon, and when other interrupt mechanisms are added
they can maintain their own definitions.

Remove unmasking of interrupts from within the UART device now that the
function used is no longer present in the Simple Executive.  The unmasking
seems to have been gratuitous as this is more properly handled by the buses
above the UART device, and seems to work on that basis.
2012-03-11 06:17:49 +00:00

111 lines
3.7 KiB
C

/***********************license start***************
* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
* reserved.
*
*
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*
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*
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* its contributors may be used to endorse or promote products
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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***********************license end**************************************/
/**
* @file
*
* Functions for SPI initialization, configuration,
* and monitoring.
*
* <hr>$Revision: 70030 $<hr>
*/
#ifndef __CVMX_HELPER_SPI_H__
#define __CVMX_HELPER_SPI_H__
/**
* @INTERNAL
* Probe a SPI interface and determine the number of ports
* connected to it. The SPI interface should still be down after
* this call.
*
* @param interface Interface to probe
*
* @return Number of ports on the interface. Zero to disable.
*/
extern int __cvmx_helper_spi_probe(int interface);
extern int __cvmx_helper_spi_enumerate(int interface);
/**
* @INTERNAL
* Bringup and enable a SPI interface. After this call packet I/O
* should be fully functional. This is called with IPD enabled but
* PKO disabled.
*
* @param interface Interface to bring up
*
* @return Zero on success, negative on failure
*/
extern int __cvmx_helper_spi_enable(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
*/
extern cvmx_helper_link_info_t __cvmx_helper_spi_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
*/
extern int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
#endif