include/hw/cris/etraxfs_dma.h

   1 #ifndef HW_ETRAXFS_DMA_H
   2 #define HW_ETRAXFS_DMA_H
   3
   4 #include "exec/hwaddr.h"
   5
   6 struct dma_context_metadata {
   7         /* data descriptor md */
   8         uint16_t metadata;
   9 };
  10
  11 struct etraxfs_dma_client
  12 {
  13         /* DMA controller. */
  14         int channel;
  15         void *ctrl;
  16
  17         /* client.  */
  18         struct {
  19                 int (*push)(void *opaque, unsigned char *buf,
  20                             int len, bool eop);
  21                 void (*pull)(void *opaque);
  22                 void (*metadata_push)(void *opaque,
  23                                       const struct dma_context_metadata *md);
  24                 void *opaque;
  25         } client;
  26 };
  27
  28 void *etraxfs_dmac_init(hwaddr base, int nr_channels);
  29 void etraxfs_dmac_connect(void *opaque, int channel, qemu_irq *line,
  30                           int input);
  31 void etraxfs_dmac_connect_client(void *opaque, int c,
  32                                  struct etraxfs_dma_client *cl);
  33 int etraxfs_dmac_input(struct etraxfs_dma_client *client,
  34                        void *buf, int len, int eop);
  35
  36 #endif