hw/etraxfs_dma.h

   1 #ifndef HW_ETRAXFS_DMA_H
   2 #define HW_ETRAXFS_DMA_H 1
   3
   4 struct dma_context_metadata {
   5         /* data descriptor md */
   6         uint16_t metadata;
   7 };
   8
   9 struct etraxfs_dma_client
  10 {
  11         /* DMA controller. */
  12         int channel;
  13         void *ctrl;
  14
  15         /* client.  */
  16         struct {
  17                 int (*push)(void *opaque, unsigned char *buf,
  18                             int len, bool eop);
  19                 void (*pull)(void *opaque);
  20                 void (*metadata_push)(void *opaque,
  21                                       const struct dma_context_metadata *md);
  22                 void *opaque;
  23         } client;
  24 };
  25
  26 void *etraxfs_dmac_init(hwaddr base, int nr_channels);
  27 void etraxfs_dmac_connect(void *opaque, int channel, qemu_irq *line,
  28                           int input);
  29 void etraxfs_dmac_connect_client(void *opaque, int c,
  30                                  struct etraxfs_dma_client *cl);
  31 int etraxfs_dmac_input(struct etraxfs_dma_client *client,
  32                        void *buf, int len, int eop);
  33
  34 #endif