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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2023-02-25 GuEe-GUI the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#define DBG_TAG "rpmsg.ns"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
/*
* Used when rt_rpmsg_create_endpoint(..., RT_NULL) (e.g. remote NS announce);
* application traffic should be bound via a higher layer later.
*/
static rt_err_t rpmsg_ns_remote_default_rx(struct rt_rpmsg_device *rdev,
rt_uint32_t src, void *data, rt_size_t len)
{
LOG_D("%s: remote endpoint rx (no user cb), src=%u len=%u", rt_dm_dev_get_name(&rdev->parent), src, len);
return RT_EOK;
}
static rt_err_t rpmsg_ns_rx_callback(struct rt_rpmsg_device *rdev,
rt_uint32_t src, void *data, rt_size_t len)
{
rt_err_t err = RT_EOK;
struct rt_rpmsg_ns_msg *msg = data;
struct rt_rpmsg_endpoint *ept;
struct rt_rpmsg_endpoint_info info;
if (len != sizeof(*msg))
{
LOG_E("Invalid MSG size = %d", len);
return -RT_EINVAL;
}
/* Fixup the name */
msg->name[RT_RPMSG_NAME_SIZE - 1] = '\0';
rt_strncpy(info.name, msg->name, RT_RPMSG_NAME_SIZE);
info.src = RT_RPMSG_ADDR_ANY;
info.dst = rt_le32_to_cpu(msg->addr);
LOG_D("%s: name: %s, src: %u, dst: %u", rt_dm_dev_get_name(&rdev->parent),
info.name, info.src, info.dst);
if (rt_le32_to_cpu(msg->flags) & RT_RPMSG_NS_DESTROY)
{
ept = rt_rpmsg_find_endpoint(rdev, &info);
if (ept)
{
err = rt_rpmsg_destroy_endpoint(rdev, ept);
}
else
{
err = -RT_EEMPTY;
}
}
else if (rt_le32_to_cpu(msg->flags) == RT_RPMSG_NS_CREATE)
{
ept = rt_rpmsg_create_endpoint(rdev, &info, RT_NULL);
if (rt_is_err(ept))
{
err = rt_ptr_err(ept);
}
}
else
{
LOG_E("Unsupported flags = %x", rt_le32_to_cpu(msg->flags));
}
if (err)
{
LOG_E("%s: name = %s, addr = %x flags = %d error = %s",
rt_dm_dev_get_name(&rdev->parent),
msg->name, msg->addr, msg->flags, rt_strerror(err));
}
return err;
}
static rt_err_t rpmsg_ns_probe(struct rt_rpmsg_device *rdev)
{
struct rt_rpmsg_endpoint *ep;
struct rt_rpmsg_endpoint_info info;
rt_strncpy(info.name, "name-service", RT_RPMSG_NAME_SIZE);
info.src = RT_RPMSG_NS_ADDR;
info.dst = RT_RPMSG_NS_ADDR;
ep = rt_rpmsg_create_endpoint(rdev, &info, &rpmsg_ns_rx_callback);
return rt_is_err(ep) ? rt_ptr_err(ep) : RT_EOK;
}
static struct rt_rpmsg_device_id rpmsg_ns_ids[] =
{
{ .name = "rpmsg-name-service" },
{ /* sentinel */ }
};
static struct rt_rpmsg_driver rpmsg_ns_driver =
{
.parent.parent =
{
.name = "rpmsg-ns",
},
.ids = rpmsg_ns_ids,
.probe = rpmsg_ns_probe,
.rx_callback = rpmsg_ns_remote_default_rx,
};
RT_RPMSG_DRIVER_EXPORT(rpmsg_ns_driver);
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