93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
/****************************************************************************
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* arch/risc-v/src/mpfs/mpfs_ihc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __ARCH_RISCV_SRC_MPFS_MPFS_IHC_H
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#define __ARCH_RISCV_SRC_MPFS_MPFS_IHC_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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#ifndef __ASSEMBLY__
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: mpfs_ihc_init
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*
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* Description:
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* This initializes the Inter-Hart Communication (IHC) module. Rptun is
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* used to simplify the integration of rpmsg and virtio. This function
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* installs the proper interrupt handlers, installs a thread, and performs
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* all the required initialization tasks.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* OK on success, a nagated errno on error
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*
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****************************************************************************/
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int mpfs_ihc_init(void);
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/****************************************************************************
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* Name: mpfs_ihc_sbi_ecall_handler
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*
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* Description:
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* This is sbi_platform_operations / vendor_ext_provider ecall handler.
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* Related Linux ecalls end up here.
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*
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* Input Parameters:
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* funcid - SBI_EXT_IHC_CTX_INIT, SBI_EXT_IHC_SEND or
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* SBI_EXT_IHC_RECEIVE. Others are invalid.
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* remote_channel - The remote we're communicating with
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* message_ptr - Local storage for data exchange
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*
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* Returned Value:
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* OK on success, a negated error code otherwise
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*
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****************************************************************************/
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int mpfs_ihc_sbi_ecall_handler(unsigned long funcid, uint32_t remote_channel,
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uint32_t *message_ptr);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_RISCV_SRC_MPFS_MPFS_IHC_H */
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