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Add static asserts and create slc.h header for descriptor struct

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This commit is contained in:
Dag Ågren 2015-11-19 21:14:16 +02:00
parent 1f1bb4d190
commit cad1655330
3 changed files with 45 additions and 28 deletions
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37
core/include/esp/slc.h Normal file
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@ -0,0 +1,37 @@
/* esp/slc_regs.h
*
* ESP8266 SLC functions
*/
#ifndef _ESP_SLC_H
#define _ESP_SLC_H
#include "esp/slc_regs.h"
/* Memory layout for DMA transfer descriptors. */
struct SLCDescriptor
{
uint32_t flags;
uint32_t buf_ptr;
uint32_t next_link_ptr;
};
#define SLC_DESCRIPTOR_FLAGS_BLOCKSIZE_M 0x00000fff
#define SLC_DESCRIPTOR_FLAGS_BLOCKSIZE_S 0
#define SLC_DESCRIPTOR_FLAGS_DATA_LENGTH_M 0x00000fff
#define SLC_DESCRIPTOR_FLAGS_DATA_LENGTH_S 12
#define SLC_DESCRIPTOR_FLAGS_SUB_SOF BIT(29)
#define SLC_DESCRIPTOR_FLAGS_EOF BIT(30)
#define SLC_DESCRIPTOR_FLAGS_OWNER BIT(31)
#define SLC_DESCRIPTOR_FLAGS(blocksize,datalen,sub_sof,eof,owner) ( \
VAL2FIELD_M(SLC_DESCRIPTOR_FLAGS_BLOCKSIZE,blocksize)| \
VAL2FIELD_M(SLC_DESCRIPTOR_FLAGS_DATA_LENGTH,datalen)| \
((sub_sof)?SLC_DESCRIPTOR_FLAGS_SUB_SOF:0)| \
((eof)?SLC_DESCRIPTOR_FLAGS_EOF:0)| \
((owner)?SLC_DESCRIPTOR_FLAGS_OWNER:0) \
)
#endif /* _ESP_SLC_REGS_H */