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34 lines
822 B
C
34 lines
822 B
C
#ifndef HW_ETRAXFS_DMA_H
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#define HW_ETRAXFS_DMA_H 1
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struct dma_context_metadata {
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/* data descriptor md */
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uint16_t metadata;
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};
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struct etraxfs_dma_client
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{
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/* DMA controller. */
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int channel;
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void *ctrl;
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/* client. */
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struct {
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int (*push)(void *opaque, unsigned char *buf,
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int len, bool eop);
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void (*pull)(void *opaque);
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void (*metadata_push)(void *opaque,
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const struct dma_context_metadata *md);
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void *opaque;
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} client;
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};
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void *etraxfs_dmac_init(hwaddr base, int nr_channels);
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void etraxfs_dmac_connect(void *opaque, int channel, qemu_irq *line,
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int input);
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void etraxfs_dmac_connect_client(void *opaque, int c,
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struct etraxfs_dma_client *cl);
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int etraxfs_dmac_input(struct etraxfs_dma_client *client,
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void *buf, int len, int eop);
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#endif
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