NetBSD/share/man/man9/flash.9

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.\" $NetBSD: flash.9,v 1.5 2014/03/18 18:20:40 riastradh Exp $
.\"
.\" Copyright (c) 2010 Department of Software Engineering,
.\" University of Szeged, Hungary
.\" Copyright (c) 2010 Adam Hoka <ahoka@NetBSD.org>
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.\" by the Department of Software Engineering, University of Szeged, Hungary
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.Dd March 31, 2011
.Dt FLASH 9
.Os
.Sh NAME
.Nm flash
.Nd subsystem for flash-like memory devices
.Sh SYNOPSIS
.In dev/flash/flash.h
.Ft device_t
.Fn flash_attach_mi "const struct flash_interface *fl" "device_t dev"
.Sh DESCRIPTION
Flash-like devices can register themselves to the
.Nm
layer with the
.Fa flash_hw_if
structure.
This structure has function pointers and other fields.
.Pp
The attachment can be done by calling
.Fn flash_attach_mi
with this structure and the device's
.Vt device_t
as an argument.
Return value is the flash layer device.
The
.Fa flash_interface
structure is shown below.
.Bd -literal
struct flash_interface {
int (*erase) (device_t, struct flash_erase_instruction *);
int (*read) (device_t, off_t, size_t, size_t *, uint8_t *);
int (*write) (device_t, off_t, size_t, size_t *, const uint8_t *);
int (*block_markbad)(device_t, uint64_t);
int (*block_isbad)(device_t, uint64_t);
int (*sync) (device_t);
int (*submit)(device_t, struct buf *);
/* storage for partition info */
struct flash_partition partition;
/* total size of mtd */
flash_addr_t size;
uint32_t page_size;
uint32_t erasesize;
uint32_t writesize;
uint32_t minor;
uint8_t type;
};
.Ed
.Sh SEE ALSO
.Xr flash 4 ,
.Xr nand 9
.Sh AUTHORS
.An Adam Hoka Aq Mt ahoka@NetBSD.org