/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SPARC_EBUS_DMA_H
#define __ASM_SPARC_EBUS_DMA_H

struct ebus_dma_info {
        spinlock_t      lock;
        void __iomem    *regs;

        unsigned int    flags;
#define EBUS_DMA_FLAG_USE_EBDMA_HANDLER         0x00000001
#define EBUS_DMA_FLAG_TCI_DISABLE               0x00000002

        /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
         * set.
         */
        void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
        void *client_cookie;
        unsigned int    irq;
#define EBUS_DMA_EVENT_ERROR    1
#define EBUS_DMA_EVENT_DMA      2
#define EBUS_DMA_EVENT_DEVICE   4

        unsigned char   name[64];
};

int ebus_dma_register(struct ebus_dma_info *p);
int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
void ebus_dma_unregister(struct ebus_dma_info *p);
int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
                            size_t len);
void ebus_dma_prepare(struct ebus_dma_info *p, int write);
unsigned int ebus_dma_residue(struct ebus_dma_info *p);
unsigned int ebus_dma_addr(struct ebus_dma_info *p);
void ebus_dma_enable(struct ebus_dma_info *p, int on);

#endif /* __ASM_SPARC_EBUS_DMA_H */