94 lines
3.7 KiB
C
94 lines
3.7 KiB
C
/****************************************************************************
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* arch/risc-v/src/mpfs/mpfs_dma.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_DMA_H
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#define __ARCH_RISCV_SRC_MPFS_MPFS_DMA_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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#include "mpfs_memorymap.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define MPFS_DMA_NUM_CHANNELS (4)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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struct mpfs_dma_channel_config
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{
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uint64_t src_addr; /* source address */
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uint64_t dest_addr; /* destination address */
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uint64_t num_bytes; /* Number of bytes to be transferred. (Base-2) */
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uint8_t enable_done_int; /* enable transfer complete interrupt */
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uint8_t enable_err_int; /* enable transfer error interrupt */
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uint8_t repeat; /* repeat the transaction */
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uint8_t force_order; /* Enforces strict ordering by only
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* allowing one of each transfer type
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* in-flight at a time */
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};
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#ifdef __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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* Public Function Prototypes
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****************************************************************************/
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EXTERN int mpfs_dma_setup_transfer(unsigned int channel,
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struct mpfs_dma_channel_config *config);
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EXTERN int mpfs_dma_set_transaction_size(unsigned int channel,
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uint8_t write_size,
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uint8_t read_size);
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EXTERN int mpfs_dma_start(unsigned int channel);
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EXTERN uint32_t mpfs_dma_get_transfer_type(unsigned int channel);
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EXTERN uint64_t mpfs_dma_get_bytes_remaining(unsigned int channel);
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EXTERN uint64_t mpfs_dma_get_current_destination(unsigned int channel);
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EXTERN uint64_t mpfs_dma_get_current_source(unsigned int channel);
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EXTERN int mpfs_dma_get_complete_status(unsigned int channel);
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EXTERN int mpfs_dma_get_error_status(unsigned int channel);
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EXTERN int mpfs_dma_clear_complete_status(unsigned int channel);
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EXTERN int mpfs_dma_clear_error_status(unsigned int channel);
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#if defined(__cplusplus)
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}
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#endif
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#undef EXTERN
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_RISCV_SRC_MPFS_MPFS_DMA_H */
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