openpcd/firmware/src/os/fifo.h @ master
| 1 | f1202753 | (no author) | #ifndef _FIFO_H
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| 2 | #define _FIFO_H
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| 3 | |||
| 4 | caf50003 | (no author) | #include <sys/types.h>
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| 5 | 8aaa856c | (no author) | |
| 6 | #define FIFO_SIZE 1024
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| 7 | |||
| 8 | f1202753 | (no author) | struct fifo { |
| 9 | 373c172a | Harald Welte | uint16_t size; /* actual FIFO size, can be smaller than 'data' */ |
| 10 | uint16_t producer; /* index of producer */ |
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| 11 | uint16_t consumer; /* index of consumer */ |
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| 12 | uint16_t watermark; |
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| 13 | uint8_t irq; |
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| 14 | uint8_t irq_en; |
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| 15 | uint8_t status; |
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| 16 | void (*callback)(struct fifo *fifo, uint8_t event, void *data); |
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| 17 | f1202753 | (no author) | void *cb_data; |
| 18 | 373c172a | Harald Welte | uint8_t data[FIFO_SIZE]; |
| 19 | f1202753 | (no author) | };
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| 20 | |||
| 21 | |||
| 22 | 373c172a | Harald Welte | extern int fifo_init(struct fifo *fifo, uint16_t size, |
| 23 | void (*callback)(struct fifo *fifo, uint8_t event, void *data), void *cb_data); |
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| 24 | extern uint16_t fifo_data_get(struct fifo *fifo, uint16_t len, uint8_t *data); |
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| 25 | extern uint16_t fifo_data_put(struct fifo *fifo, uint16_t len, uint8_t *data); |
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| 26 | f1202753 | (no author) | extern int fifo_available(struct fifo *fifo); |
| 27 | |||
| 28 | #endif
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