50 lines
1.6 KiB
C
50 lines
1.6 KiB
C
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/****************************************************************************
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Copyright(c) 2019 by Aerospace C.Power (Chongqing) Microelectronics. ALL RIGHTS RESERVED.
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This Information is proprietary to Aerospace C.Power (Chongqing) Microelectronics and MAY NOT
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be copied by any method or incorporated into another program without
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the express written consent of Aerospace C.Power. This Information or any portion
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thereof remains the property of Aerospace C.Power. The Information contained herein
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is believed to be accurate and Aerospace C.Power assumes no responsibility or
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liability for its use in any way and conveys no license or title under
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any patent or copyright and makes no representation or warranty that this
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Information is free from patent or copyright infringement.
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****************************************************************************/
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#ifndef MAC_DMA_H
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#define MAC_DMA_H
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#include "os_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_DMA_FRAG_NUM 3
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/* pack for the structures in the whole file */
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#pragma pack(push) // save the pack status
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#pragma pack(1) // 1 byte align
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typedef PREPACK struct _dma_frag {
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uint32_t addr; // the addr of the data pointer, not the data itself
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uint32_t need_free : 1, // to be removed in future
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hw_own : 1, // is hw own this frag buf
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len : 30;
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} POSTPACK dma_frag_t;
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typedef PREPACK struct _dma_frag_list {
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dma_frag_t buf_frag;
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struct dma_frag_list_t *next;
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} POSTPACK dma_frag_list_t;
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#pragma pack(pop) // restore the pack status
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#ifdef __cplusplus
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}
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#endif
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#endif //MAC_DMA_H
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