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/*-
* Copyright (c) 2026 Justin Hibbits
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#ifndef _DEV_DPAA_FMAN_KEYGEN_H_
#define _DEV_DPAA_FMAN_KEYGEN_H_
struct fman_softc;
/*
* Bring up the FMan KeyGen block once per FMan instance. Enables error
* event reporting and clears all port/scheme bindings. Called from
* fman_init() in fman.c.
*/
int fman_kg_init(struct fman_softc *sc);
void fman_kg_fini(struct fman_softc *sc);
/*
* Configure a hash-distribution scheme for @hw_port_id: RSS-style
* spreading over @nfqs FQs starting at @base_fqid, keyed on the IP
* 5-tuple. @nfqs must be a power of two, @base_fqid must be aligned
* to @nfqs, and both fit in 24 bits (Linux constraint, matches the
* FMKG_SCM_FQB field width). Returns 0 on success or a non-zero
* errno; on success the scheme is bound to the port immediately and
* incoming frames start hashing on the next dequeue cycle.
*/
int fman_kg_alloc_hash_scheme(struct fman_softc *sc, int hw_port_id,
uint32_t base_fqid, uint32_t nfqs);
/*
* Undo fman_kg_alloc_hash_scheme() for @hw_port_id. Unbinds the
* scheme from the port, disables it, and releases the scheme slot.
* Frames after this point fall through to the port's dflt_fqid.
*/
int fman_kg_free_hash_scheme(struct fman_softc *sc, int hw_port_id);
#endif /* _DEV_DPAA_FMAN_KEYGEN_H_ */
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