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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2021 Adrian Chadd <adrian@FreeBSD.org>.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef __QCOM_ESS_EDMA_DESC_H__
#define __QCOM_ESS_EDMA_DESC_H__
extern int qcom_ess_edma_desc_ring_setup(struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring,
char *label,
int count,
int sw_desc_size,
int hw_desc_size,
int num_segments,
int buffer_alignment);
extern int qcom_ess_edma_desc_ring_free(struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring);
extern void * qcom_ess_edma_desc_ring_get_sw_desc(
struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring,
uint16_t index);
extern void * qcom_ess_edma_desc_ring_get_hw_desc(
struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring,
uint16_t index);
extern int qcom_ess_edma_desc_ring_flush_preupdate(
struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring);
extern int qcom_ess_edma_desc_ring_flush_postupdate(
struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring);
extern int qcom_ess_edma_desc_ring_get_num_available(
struct qcom_ess_edma_softc *sc,
struct qcom_ess_edma_desc_ring *ring);
#endif /* __QCOM_ESS_EDMA_DESC_H__ */
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