diff options
Diffstat (limited to 'sys/dev/qcom_ess_edma/qcom_ess_edma_desc.h')
| -rw-r--r-- | sys/dev/qcom_ess_edma/qcom_ess_edma_desc.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sys/dev/qcom_ess_edma/qcom_ess_edma_desc.h b/sys/dev/qcom_ess_edma/qcom_ess_edma_desc.h new file mode 100644 index 000000000000..b7213d94da5d --- /dev/null +++ b/sys/dev/qcom_ess_edma/qcom_ess_edma_desc.h @@ -0,0 +1,63 @@ +/*- + * 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__ */ |