38 lines
929 B
C
38 lines
929 B
C
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/* esp/slc_regs.h
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*
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* ESP8266 SLC functions
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*/
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#ifndef _ESP_SLC_H
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#define _ESP_SLC_H
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#include "esp/slc_regs.h"
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/* Memory layout for DMA transfer descriptors. */
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struct SLCDescriptor
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{
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uint32_t flags;
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uint32_t buf_ptr;
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uint32_t next_link_ptr;
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};
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#define SLC_DESCRIPTOR_FLAGS_BLOCKSIZE_M 0x00000fff
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#define SLC_DESCRIPTOR_FLAGS_BLOCKSIZE_S 0
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#define SLC_DESCRIPTOR_FLAGS_DATA_LENGTH_M 0x00000fff
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#define SLC_DESCRIPTOR_FLAGS_DATA_LENGTH_S 12
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#define SLC_DESCRIPTOR_FLAGS_SUB_SOF BIT(29)
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#define SLC_DESCRIPTOR_FLAGS_EOF BIT(30)
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#define SLC_DESCRIPTOR_FLAGS_OWNER BIT(31)
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#define SLC_DESCRIPTOR_FLAGS(blocksize,datalen,sub_sof,eof,owner) ( \
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VAL2FIELD_M(SLC_DESCRIPTOR_FLAGS_BLOCKSIZE,blocksize)| \
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VAL2FIELD_M(SLC_DESCRIPTOR_FLAGS_DATA_LENGTH,datalen)| \
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((sub_sof)?SLC_DESCRIPTOR_FLAGS_SUB_SOF:0)| \
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((eof)?SLC_DESCRIPTOR_FLAGS_EOF:0)| \
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((owner)?SLC_DESCRIPTOR_FLAGS_OWNER:0) \
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)
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#endif /* _ESP_SLC_REGS_H */
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