LXR linux/arch/sparc/include/asm/ebus

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __ASM_SPARC_EBUS_DMA_H
   3#define __ASM_SPARC_EBUS_DMA_H
   4
   5struct ebus_dma_info {
   6        spinlock_t      lock;
   7        void __iomem    *regs;
   8
   9        unsigned int    flags;
  10#define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
  11#define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002
  12
  13        /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
  14         * set.
  15         */
  16        void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
  17        void *client_cookie;
  18        unsigned int    irq;
  19#define EBUS_DMA_EVENT_ERROR    1
  20#define EBUS_DMA_EVENT_DMA      2
  21#define EBUS_DMA_EVENT_DEVICE   4
  22
  23        unsigned char   name[64];
  24};
  25
  26int ebus_dma_register(struct ebus_dma_info *p);
  27int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
  28void ebus_dma_unregister(struct ebus_dma_info *p);
  29int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
  30                            size_t len);
  31void ebus_dma_prepare(struct ebus_dma_info *p, int write);
  32unsigned int ebus_dma_residue(struct ebus_dma_info *p);
  33unsigned int ebus_dma_addr(struct ebus_dma_info *p);
  34void ebus_dma_enable(struct ebus_dma_info *p, int on);
  35
  36#endif /* __ASM_SPARC_EBUS_DMA_H */
  37