58f9d806d1
Use page directory based shared buffer implementation now available as common code for Xen frontend drivers. Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com> Reviewed-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
55 lines
1.5 KiB
C
55 lines
1.5 KiB
C
/* 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_H
|
|
#define __XEN_SND_FRONT_H
|
|
|
|
#include "xen_snd_front_cfg.h"
|
|
|
|
struct xen_snd_front_card_info;
|
|
struct xen_snd_front_evtchnl;
|
|
struct xen_snd_front_evtchnl_pair;
|
|
struct xen_front_pgdir_shbuf;
|
|
struct xensnd_query_hw_param;
|
|
|
|
struct xen_snd_front_info {
|
|
struct xenbus_device *xb_dev;
|
|
|
|
struct xen_snd_front_card_info *card_info;
|
|
|
|
int num_evt_pairs;
|
|
struct xen_snd_front_evtchnl_pair *evt_pairs;
|
|
|
|
struct xen_front_cfg_card cfg;
|
|
};
|
|
|
|
int xen_snd_front_stream_query_hw_param(struct xen_snd_front_evtchnl *evtchnl,
|
|
struct xensnd_query_hw_param *hw_param_req,
|
|
struct xensnd_query_hw_param *hw_param_resp);
|
|
|
|
int xen_snd_front_stream_prepare(struct xen_snd_front_evtchnl *evtchnl,
|
|
struct xen_front_pgdir_shbuf *shbuf,
|
|
u8 format, unsigned int channels,
|
|
unsigned int rate, u32 buffer_sz,
|
|
u32 period_sz);
|
|
|
|
int xen_snd_front_stream_close(struct xen_snd_front_evtchnl *evtchnl);
|
|
|
|
int xen_snd_front_stream_write(struct xen_snd_front_evtchnl *evtchnl,
|
|
unsigned long pos, unsigned long count);
|
|
|
|
int xen_snd_front_stream_read(struct xen_snd_front_evtchnl *evtchnl,
|
|
unsigned long pos, unsigned long count);
|
|
|
|
int xen_snd_front_stream_trigger(struct xen_snd_front_evtchnl *evtchnl,
|
|
int type);
|
|
|
|
#endif /* __XEN_SND_FRONT_H */
|