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Sorry, I didn't attach the file!

Takemura

----- Original Message -----
From: "TAKEMURA Shin" <takemura@netbsd.org>
To: <thorpej@wasabisystems.com>
Cc: <cgd@broadcom.com>; <eeh@netbsd.org>; <mouse@rodents.montreal.qc.ca>;
<simonb@wasabisystems.com>; <tech-kern@netbsd.org>
Sent: Sunday, November 11, 2001 12:09 AM
Subject: Re: MI bus ops(Re: 16bit aligned NS16550 variant)


> Okay... I've wrote rough draft of sys/bus.h (attached).


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	filename="bus.h"

=0A=
/*-=0A=
 * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.=0A=
 * All rights reserved.=0A=
 *(snipped)=0A=
 */=0A=
=0A=
#include <machine/bus_types.h>=0A=
=0A=
#ifndef BUS_SPACE_MD_CALLS=0A=
/*=0A=
 * bus space operaion table=0A=
 */=0A=
struct bus_space_ops {=0A=
	/* sniped */=0A=
};=0A=
=0A=
/* here shuld be many macro definitions,=0A=
#define	bus_space_read_1(t, h, o)	...=0A=
(snipped) */=0A=
=0A=
#endif /* ! BUS_SPACE_MD_CALLS */=0A=
=0A=
#ifndef BUS_DMA_MD_CALLS=0A=
/*=0A=
 * bus DMA operaion table=0A=
 */=0A=
struct bus_dma_ops {=0A=
	/* sniped */=0A=
};=0A=
=0A=
/* here shuld be many macro definitions,=0A=
#define	bus_dmamap_create(t, s, n, m, b, f, p)	...=0A=
(snipped) */=0A=
=0A=
#endif /* ! BUS_DMA_MD_CALLS */=0A=
=0A=
#ifndef BUS_SPACE_MD_TYPES=0A=
typedef struct bus_space *bus_space_tag_t;=0A=
=0A=
/*=0A=
 *	bus_space_tag_t=0A=
 *=0A=
 *	bus space tag structure=0A=
 */=0A=
struct bus_space_tag {=0A=
	bus_space_tag_t bs_base;=0A=
	struct bus_space_ops bs_ops;=0A=
};=0A=
#endif /* ! BUS_SPACE_MD_TYPES */=0A=
=0A=
#ifndef BUS_DMA_MD_TYPES=0A=
typedef struct bus_dma_tag	*bus_dma_tag_t;=0A=
typedef struct bus_dma_segment	bus_dma_segment_t;=0A=
typedef struct bus_dmamap	*bus_dmamap_t;=0A=
=0A=
/*=0A=
 *	bus_dma_tag_t=0A=
 *=0A=
 *	Describes a implementation of DMA for a given bus.=0A=
 */=0A=
struct bus_dma_tag {=0A=
	bus_dma_tag_t bd_base;=0A=
	struct bus_dma_ops bd_ops;=0A=
};=0A=
=0A=
/*=0A=
 *	bus_dma_segment_t=0A=
 *=0A=
 *	Describes a single contiguous DMA transaction.=0A=
 */=0A=
struct bus_dma_segment {=0A=
	bus_addr_t	ds_addr;	/* DMA address */=0A=
	bus_size_t	ds_len;		/* length of transfer */=0A=
};=0A=
=0A=
/*=0A=
 *	bus_dmamap_t=0A=
 *=0A=
 *	Describes a DMA mapping.=0A=
 */=0A=
struct bus_dmamap {=0A=
	bus_size_t	dm_mapsize;	/* size of the mapping */=0A=
	int		dm_nsegs;	/* # valid segments in mapping */=0A=
	bus_dma_segment_t *dm_segs;	/* segments; variable length */=0A=
};=0A=
=0A=
#endif /* ! BUS_DMA_MD_TYPES */=0A=
=0A=
#include <machine/bus.h>=0A=

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