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USB, to add ohci/ehci. Make fifo comply with iorec

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This commit is contained in:
Ørn E. Hansen
2013-04-21 21:28:45 +00:00
parent 2119da91e7
commit b2baa22b71
7 changed files with 46 additions and 53 deletions
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31
i2cspi_BaS_gcc/include/fifo.h
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@@ -12,16 +12,31 @@
#include <inttypes.h>
/*
* FIFO
*
* Make this look exactly like IOREC, so that
* we can interchange the two. But ignore the
* low, high watermarks. For now.
*
* in IOREC, the notion of head/tail is opposite
* to ours. So we place our head/tail, in the
* equivalent positions as TOS use is. So
* we can use this structure, intermittantly
* with TOS.
*/
typedef struct
{
char * buf;
int head;
int tail;
int size;
char * buf;
int16_t size;
int16_t tail;
int16_t head;
int16_t low;
int16_t high;
} fifo_t;
void fifo_init(fifo_t*, char*, int);
void fifo_advance(fifo_t*, int*);
void fifo_init(fifo_t*, char*, int16_t);
void fifo_advance(fifo_t*, int16_t*);
uint8_t fifo_get(fifo_t*);
void fifo_put(fifo_t*, uint8_t);
@@ -34,7 +49,7 @@ int fifo_unused(fifo_t*);
int fifo_full(fifo_t*);
int fifo_empty(fifo_t*);
int fifo_read(fifo_t*, unsigned char *, int);
int fifo_write(fifo_t*, const unsigned char*, int);
int fifo_read(fifo_t*, unsigned char *, int16_t);
int fifo_write(fifo_t*, const unsigned char*, int16_t);
#endif