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/* $OpenBSD: isadmavar.h,v 1.9 1997/12/21 14:41:24 downsj Exp $ */
/* $NetBSD: isadmavar.h,v 1.4 1996/03/01 04:08:46 mycroft Exp $ */
#define DMAMODE_WRITE 0
#define DMAMODE_READ 1
#define DMAMODE_LOOP 2
#define ISADMA_START_READ DMAMODE_READ /* read from device */
#define ISADMA_START_WRITE DMAMODE_WRITE /* write to device */
#define ISADMA_MAP_WAITOK 0x0001 /* OK for isadma_map to sleep */
#define ISADMA_MAP_BOUNCE 0x0002 /* use bounce buffer if necessary */
#define ISADMA_MAP_CONTIG 0x0004 /* must be physically contiguous */
#define ISADMA_MAP_8BIT 0x0008 /* must not cross 64k boundary */
#define ISADMA_MAP_16BIT 0x0010 /* must not cross 128k boundary */
struct isadma_seg { /* a physical contiguous segment */
vm_offset_t addr; /* address of this segment */
vm_size_t length; /* length of this segment (bytes) */
};
int isadma_map __P((caddr_t, vm_size_t, struct isadma_seg *, int));
void isadma_unmap __P((caddr_t, vm_size_t, int, struct isadma_seg *));
void isadma_copytobuf __P((caddr_t, vm_size_t, int, struct isadma_seg *));
void isadma_copyfrombuf __P((caddr_t, vm_size_t, int, struct isadma_seg *));
int isadma_acquire __P((int));
void isadma_release __P((int));
int isadma_isdrqfree __P((int));
void isadma_cascade __P((int));
void isadma_start __P((caddr_t, vm_size_t, int, int));
void isadma_abort __P((int));
int isadma_finished __P((int));
void isadma_done __P((int));
/*
* XXX these are needed until all drivers have been cleaned up
*/
#define isa_dma_acquire(c) isadma_acquire(c)
#define isa_dma_release(c) isadma_release(c)
#define isa_dmacascade(c) isadma_cascade((c))
#define isa_dmastart(f, a, s, c) isadma_start((a), (s), (c), (f))
#define isa_dmaabort(c) isadma_abort((c))
#define isa_dmafinished(c) isadma_finished((c))
#define isa_dmadone(f, a, s, c) isadma_done((c))
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