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nuttx/drivers/rpmsg/rpmsg_router.h

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drivers/rpmsg: add rpmsg router support Rpmsg Router is new rpmsg transport layer, it can router the rpmsg messages to a cpu that not directly connected with local cpu by Rpmsg, For the rpmsg services, it is as if there is a real Rpmsg Channel between the local cpu and the remote cpu. For examples, there are three cpus: ap, cp and audio. ap and cp, ap and audio has share memory and be connected by Rpmsg VirtIO, so ap and cp, ap and audio can communicate with each other by Rpmsg, but cp can not communicate with audio direclty. [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] With rpmsg router, the cp can communicate with audip by Rpmsg dereclty because the router in ap will forward the rpmsg message from cp/audio to audio/cp, like this: +<----- rpmsg router --> hub <-- rpmsg router ------>+ | | | [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] Signed-off-by: yintao <yintao@xiaomi.com>
2024-04-14 07:17:05 +02:00
/****************************************************************************
* drivers/rpmsg/rpmsg_router.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __DRIVERS_RPMSG_RPMSG_ROUTER_H
#define __DRIVERS_RPMSG_RPMSG_ROUTER_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/rpmsg/rpmsg.h>
#ifdef CONFIG_RPMSG_ROUTER
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define RPMSG_ROUTER_NAME "router:"
#define RPMSG_ROUTER_NAME_LEN 7
#define RPMSG_ROUTER_NAME_PREFIX "r:"
#define RPMSG_ROUTER_NAME_PREFIX_LEN 2
#define RPMSG_ROUTER_CPUNAME_LEN 8
drivers/rpmsg: Add edge_create and edge_destroy for router use cmd to notify the other cpu to destroy router edge device, and dont destroy the other cpu's "router:ept" Signed-off-by: yintao <yintao@xiaomi.com>
2024-07-02 12:31:52 +02:00
#define RPMSG_ROUTER_CREATE 1
#define RPMSG_ROUTER_DESTROY 2
drivers/rpmsg: add rpmsg router support Rpmsg Router is new rpmsg transport layer, it can router the rpmsg messages to a cpu that not directly connected with local cpu by Rpmsg, For the rpmsg services, it is as if there is a real Rpmsg Channel between the local cpu and the remote cpu. For examples, there are three cpus: ap, cp and audio. ap and cp, ap and audio has share memory and be connected by Rpmsg VirtIO, so ap and cp, ap and audio can communicate with each other by Rpmsg, but cp can not communicate with audio direclty. [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] With rpmsg router, the cp can communicate with audip by Rpmsg dereclty because the router in ap will forward the rpmsg message from cp/audio to audio/cp, like this: +<----- rpmsg router --> hub <-- rpmsg router ------>+ | | | [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] Signed-off-by: yintao <yintao@xiaomi.com>
2024-04-14 07:17:05 +02:00
/****************************************************************************
* Public Types
****************************************************************************/
begin_packed_struct struct rpmsg_router_s
{
drivers/rpmsg: Add edge_create and edge_destroy for router use cmd to notify the other cpu to destroy router edge device, and dont destroy the other cpu's "router:ept" Signed-off-by: yintao <yintao@xiaomi.com>
2024-07-02 12:31:52 +02:00
uint32_t cmd;
drivers/rpmsg: add rpmsg router support Rpmsg Router is new rpmsg transport layer, it can router the rpmsg messages to a cpu that not directly connected with local cpu by Rpmsg, For the rpmsg services, it is as if there is a real Rpmsg Channel between the local cpu and the remote cpu. For examples, there are three cpus: ap, cp and audio. ap and cp, ap and audio has share memory and be connected by Rpmsg VirtIO, so ap and cp, ap and audio can communicate with each other by Rpmsg, but cp can not communicate with audio direclty. [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] With rpmsg router, the cp can communicate with audip by Rpmsg dereclty because the router in ap will forward the rpmsg message from cp/audio to audio/cp, like this: +<----- rpmsg router --> hub <-- rpmsg router ------>+ | | | [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] Signed-off-by: yintao <yintao@xiaomi.com>
2024-04-14 07:17:05 +02:00
uint32_t tx_len;
uint32_t rx_len;
drivers/rpmsg: Add get_local_cpuname in router get_local_cpuname ops support for rpmsg router Signed-off-by: yintao <yintao@xiaomi.com>
2024-06-24 11:10:12 +02:00
char cpuname[RPMSG_ROUTER_CPUNAME_LEN];
drivers/rpmsg: add rpmsg router support Rpmsg Router is new rpmsg transport layer, it can router the rpmsg messages to a cpu that not directly connected with local cpu by Rpmsg, For the rpmsg services, it is as if there is a real Rpmsg Channel between the local cpu and the remote cpu. For examples, there are three cpus: ap, cp and audio. ap and cp, ap and audio has share memory and be connected by Rpmsg VirtIO, so ap and cp, ap and audio can communicate with each other by Rpmsg, but cp can not communicate with audio direclty. [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] With rpmsg router, the cp can communicate with audip by Rpmsg dereclty because the router in ap will forward the rpmsg message from cp/audio to audio/cp, like this: +<----- rpmsg router --> hub <-- rpmsg router ------>+ | | | [cp] <-- rpmsg virtio --> [ap] <-- rpmsg virtio --> [audio] Signed-off-by: yintao <yintao@xiaomi.com>
2024-04-14 07:17:05 +02:00
} end_packed_struct;
#endif /* CONFIG_RPMSG_ROUTER */
#endif /* __DRIVERS_RPMSG_RPMSG_ROUTER_H */
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