arch/mips/include/asm/octeon/cvmx-helper-rgmii.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/octeon/cvmx-helper-rgmii.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/asm/octeon/cvmx-helper-rgmii.h
Extension
.h
Size
2964 bytes
Lines
94
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __CVMX_HELPER_RGMII_H__
#define __CVMX_HELPER_RGMII_H__

/**
 * Probe RGMII ports and determine the number present
 *
 * @interface: Interface to probe
 *
 * Returns Number of RGMII/GMII/MII ports (0-4).
 */
extern int __cvmx_helper_rgmii_probe(int interface);
#define __cvmx_helper_rgmii_enumerate __cvmx_helper_rgmii_probe

/**
 * Put an RGMII interface in loopback mode. Internal packets sent
 * out will be received back again on the same port. Externally
 * received packets will echo back out.
 *
 * @port:   IPD port number to loop.
 */
extern void cvmx_helper_rgmii_internal_loopback(int port);

/**
 * Configure all of the ASX, GMX, and PKO registers required
 * to get RGMII to function on the supplied interface.
 *
 * @interface: PKO Interface to configure (0 or 1)
 *
 * Returns Zero on success
 */
extern int __cvmx_helper_rgmii_enable(int interface);

/**
 * 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().
 *
 * @ipd_port: IPD/PKO port to query
 *
 * Returns Link state
 */
extern union cvmx_helper_link_info __cvmx_helper_rgmii_link_get(int ipd_port);

/**
 * 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().
 *
 * @ipd_port:  IPD/PKO port to configure
 * @link_info: The new link state
 *
 * Returns Zero on success, negative on failure
 */
extern int __cvmx_helper_rgmii_link_set(int ipd_port,
					union cvmx_helper_link_info link_info);

#endif

Annotation

Implementation Notes