建立工程，成功创建两个虚拟串口
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ranchuan
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source/OpenAMP/open-amp/lib/include/openamp/remoteproc_virtio.h
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source/OpenAMP/open-amp/lib/include/openamp/remoteproc_virtio.h
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/*
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* Remoteproc Virtio Framework
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*
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* Copyright(c) 2018 Xilinx Ltd.
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* Copyright(c) 2011 Texas Instruments, Inc.
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* Copyright(c) 2011 Google, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Texas Instruments nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef REMOTEPROC_VIRTIO_H
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#define REMOTEPROC_VIRTIO_H
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#include <metal/io.h>
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#include <metal/list.h>
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#include <openamp/virtio.h>
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#if defined __cplusplus
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extern "C" {
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#endif
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/* define vdev notification funciton user should implement */
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typedef int (*rpvdev_notify_func)(void *priv, uint32_t id);
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/**
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* struct remoteproc_virtio
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* @priv pointer to private data
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* @notifyid notification id
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* @vdev_rsc address of vdev resource
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* @vdev_rsc_io metal I/O region of vdev_info, can be NULL
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* @notify notification function
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* @vdev virtio device
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* @node list node
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*/
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struct remoteproc_virtio {
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void *priv;
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uint32_t notify_id;
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void *vdev_rsc;
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struct metal_io_region *vdev_rsc_io;
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rpvdev_notify_func notify;
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struct virtio_device vdev;
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struct metal_list node;
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};
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/**
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* rproc_virtio_create_vdev
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*
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* Create rproc virtio vdev
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*
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* @role: 0 - virtio master, 1 - virtio slave
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* @notifyid: virtio device notification id
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* @rsc: pointer to the virtio device resource
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* @rsc_io: pointer to the virtio device resource I/O region
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* @priv: pointer to the private data
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* @notify: vdev and virtqueue notification function
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* @rst_cb: reset virtio device callback
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*
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* return pointer to the created virtio device for success,
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* NULL for failure.
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*/
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struct virtio_device *
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rproc_virtio_create_vdev(unsigned int role, unsigned int notifyid,
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void *rsc, struct metal_io_region *rsc_io,
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void *priv,
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rpvdev_notify_func notify,
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virtio_dev_reset_cb rst_cb);
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/**
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* rproc_virtio_remove_vdev
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*
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* Create rproc virtio vdev
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*
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* @vdev - pointer to the virtio device
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*/
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void rproc_virtio_remove_vdev(struct virtio_device *vdev);
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/**
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* rproc_virtio_create_vring
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*
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* Create rproc virtio vring
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*
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* @vdev: pointer to the virtio device
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* @index: vring index in the virtio device
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* @notifyid: remoteproc vring notification id
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* @va: vring virtual address
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* @io: pointer to vring I/O region
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* @num_desc: number of descriptors
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* @align: vring alignment
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*
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* return 0 for success, negative value for failure.
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*/
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int rproc_virtio_init_vring(struct virtio_device *vdev, unsigned int index,
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unsigned int notifyid, void *va,
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struct metal_io_region *io,
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unsigned int num_descs, unsigned int align);
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/**
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* rproc_virtio_notified
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*
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* remoteproc virtio is got notified
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*
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* @vdev - pointer to the virtio device
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* @notifyid - notify id
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*
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* return 0 for successful, negative value for failure
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*/
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int rproc_virtio_notified(struct virtio_device *vdev, uint32_t notifyid);
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/**
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* rproc_virtio_wait_remote_ready
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*
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* Blocking function, waiting for the remote core is ready to start
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* communications.
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*
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* @vdev - pointer to the virtio device
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*
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* return true when remote processor is ready.
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*/
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void rproc_virtio_wait_remote_ready(struct virtio_device *vdev);
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#if defined __cplusplus
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}
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#endif
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#endif /* REMOTEPROC_VIRTIO_H */
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