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/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/*
* Xen para-virtual sound device
*
* Copyright (C) 2016-2018 EPAM Systems Inc.
*
* Author: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
*/
#ifndef __XEN_SND_FRONT_SHBUF_H
#define __XEN_SND_FRONT_SHBUF_H
#include <xen/grant_table.h>
#include "xen_snd_front_evtchnl.h"
struct xen_snd_front_shbuf {
int num_grefs;
grant_ref_t *grefs;
u8 *directory;
u8 *buffer;
size_t buffer_sz;
};
grant_ref_t xen_snd_front_shbuf_get_dir_start(struct xen_snd_front_shbuf *buf);
int xen_snd_front_shbuf_alloc(struct xenbus_device *xb_dev,
struct xen_snd_front_shbuf *buf,
unsigned int buffer_sz);
void xen_snd_front_shbuf_clear(struct xen_snd_front_shbuf *buf);
void xen_snd_front_shbuf_free(struct xen_snd_front_shbuf *buf);
#endif /* __XEN_SND_FRONT_SHBUF_H */
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