arch/sparc/include/asm/ebus_dma.h

   1 #ifndef __ASM_SPARC_EBUS_DMA_H
   2 #define __ASM_SPARC_EBUS_DMA_H
   3
   4 struct ebus_dma_info {
   5         spinlock_t      lock;
   6         void __iomem    *regs;
   7
   8         unsigned int    flags;
   9 #define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
  10 #define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002
  11
  12         /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
  13          * set.
  14          */
  15         void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
  16         void *client_cookie;
  17         unsigned int    irq;
  18 #define EBUS_DMA_EVENT_ERROR    1
  19 #define EBUS_DMA_EVENT_DMA      2
  20 #define EBUS_DMA_EVENT_DEVICE   4
  21
  22         unsigned char   name[64];
  23 };
  24
  25 extern int ebus_dma_register(struct ebus_dma_info *p);
  26 extern int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
  27 extern void ebus_dma_unregister(struct ebus_dma_info *p);
  28 extern int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
  29                             size_t len);
  30 extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
  31 extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
  32 extern unsigned int ebus_dma_addr(struct ebus_dma_info *p);
  33 extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
  34
  35 #endif /* __ASM_SPARC_EBUS_DMA_H */