54 lines
1.7 KiB
C
54 lines
1.7 KiB
C
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/*
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* LitePCIe library
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*
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*/
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#ifndef LITEPCIE_LIB_H
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#define LITEPCIE_LIB_H
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#include <stdarg.h>
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#include <pthread.h>
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#define LITEPCIE_FILENAME "/dev/litepcie0"
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typedef struct {
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int litepcie_fd;
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struct litepcie_ioctl_mmap_info mmap_info;
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uint8_t *dma_tx_buf;
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int dma_tx_buf_size;
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uint8_t *dma_rx_buf;
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int dma_rx_buf_size;
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uint8_t *reg_buf;
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unsigned int tx_buf_size; /* in bytes */
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unsigned int tx_buf_count; /* number of buffers */
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unsigned int rx_buf_size; /* in bytes */
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unsigned int rx_buf_count; /* number of buffers */
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unsigned int tx_buf_len; /* in samples */
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unsigned int rx_buf_len; /* in samples */
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pthread_mutex_t fifo_mutex;
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int64_t rx_timestamp; /* timestamp (in samples) of the current RX buffer */
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unsigned int rx_buf_index; /* index of the current RX buffer */
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unsigned int rx_buf_next; /* index of the next buffer after the
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last received buffer */
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BOOL has_rx_timestamp; /* true if received at least one buffer */
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int64_t tx_underflow_count; /* TX too late */
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int64_t rx_overflow_count; /* RX too late */
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} LitePCIeState;
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void *litepcie_malloc(int size);
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void *litepcie_mallocz(int size);
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void litepcie_free(void *ptr);
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void __attribute__((format(printf, 2, 3))) litepcie_log(LitePCIeState *s, const char *fmt, ...);
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int64_t litepcie_get_time_ms(void);
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LitePCIeState *litepcie_open(const char *device_name);
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void litepcie_close(LitePCIeState *s);
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void litepcie_dma_start(LitePCIeState *s, int buf_size, int buf_count, BOOL is_loopback);
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void litepcie_dma_stop(LitePCIeState *s);
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void litepcie_writel(LitePCIeState *s, uint32_t addr, uint32_t val);
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uint32_t litepcie_readl(LitePCIeState *s, uint32_t addr);
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#endif /* LITEPCIE_LIB_H */
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