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#ifndef _PCILIB_DMA_H
#define _PCILIB_DMA_H
#define PCILIB_DMA_BUFFER_INVALID ((size_t)-1)
#define PCILIB_DMA_MODIFICATION_DEFAULT 0 /**< first 0x100 are reserved */
typedef uint32_t pcilib_dma_modification_t;
typedef struct {
int started;
size_t ring_size, buffer_size;
size_t ring_head, ring_tail;
} pcilib_dma_engine_status_t;
typedef struct {
int used;
int error;
int first;
int last;
size_t size;
} pcilib_dma_buffer_status_t;
struct pcilib_dma_api_description_s {
pcilib_dma_context_t *(*init)(pcilib_t *ctx, pcilib_dma_modification_t type, void *arg);
void (*free)(pcilib_dma_context_t *ctx);
int (*status)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_engine_status_t *status, size_t n_buffers, pcilib_dma_buffer_status_t *buffers);
int (*enable_irq)(pcilib_dma_context_t *ctx, pcilib_irq_type_t irq_type, pcilib_dma_flags_t flags);
int (*disable_irq)(pcilib_dma_context_t *ctx, pcilib_dma_flags_t flags);
int (*acknowledge_irq)(pcilib_dma_context_t *ctx, pcilib_irq_type_t irq_type, pcilib_irq_source_t irq_source);
int (*start_dma)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags);
int (*stop_dma)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags);
int (*push)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, void *buf, size_t *written);
int (*stream)(pcilib_dma_context_t *ctx, pcilib_dma_engine_t dma, uintptr_t addr, size_t size, pcilib_dma_flags_t flags, pcilib_timeout_t timeout, pcilib_dma_callback_t cb, void *cbattr);
double (*benchmark)(pcilib_dma_context_t *ctx, pcilib_dma_engine_addr_t dma, uintptr_t addr, size_t size, size_t iterations, pcilib_dma_direction_t direction);
};
struct pcilib_dma_context_s {
int ignore_eop;
};
int pcilib_set_dma_engine_description(pcilib_t *ctx, pcilib_dma_engine_t engine, pcilib_dma_engine_description_t *desc);
int pcilib_get_dma_status(pcilib_t *ctx, pcilib_dma_engine_t dma, pcilib_dma_engine_status_t *status, size_t n_buffers, pcilib_dma_buffer_status_t *buffers);
#endif /* _PCILIB_DMA_H */
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