154 lines
4.6 KiB
C
154 lines
4.6 KiB
C
/* $NetBSD: flash.h,v 1.7 2011/07/29 20:48:33 ahoka Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2011 Department of Software Engineering,
|
|
* University of Szeged, Hungary
|
|
* Copyright (c) 2011 Adam Hoka <ahoka@NetBSD.org>
|
|
* Copyright (c) 2010 David Tengeri <dtengeri@inf.u-szeged.hu>
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by the Department of Software Engineering, University of Szeged, Hungary
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _FLASH_H_
|
|
#define _FLASH_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <sys/module.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/flashio.h>
|
|
|
|
#ifdef FLASH_DEBUG
|
|
#define FLDPRINTF(x) if (flashdebug) printf x
|
|
#define FLDPRINTFN(n,x) if (flashdebug>(n)) printf x
|
|
#else
|
|
#define FLDPRINTF(x)
|
|
#define FLDPRINTFN(n,x)
|
|
#endif
|
|
|
|
struct flash_partition {
|
|
flash_off_t part_offset;
|
|
flash_size_t part_size;
|
|
int part_flags;
|
|
};
|
|
|
|
/**
|
|
* flash_softc - private structure for flash layer driver
|
|
*/
|
|
|
|
struct flash_softc {
|
|
device_t sc_dev;
|
|
device_t sc_parent_dev; /* Hardware (parent) device */
|
|
void *hw_softc; /* Hardware device private softc */
|
|
struct flash_interface *flash_if; /* Hardware interface */
|
|
struct flash_partition sc_partinfo; /* partition information */
|
|
|
|
bool sc_readonly; /* read only flash device */
|
|
};
|
|
|
|
struct flash_attach_args {
|
|
struct flash_interface *flash_if; /* Hardware interface */
|
|
struct flash_partition partinfo;
|
|
};
|
|
|
|
/**
|
|
* struct erase_instruction - instructions to erase a flash eraseblock
|
|
*/
|
|
struct flash_erase_instruction {
|
|
flash_off_t ei_addr;
|
|
flash_off_t ei_len;
|
|
void (*ei_callback)(struct flash_erase_instruction *);
|
|
u_long ei_priv;
|
|
u_char ei_state;
|
|
};
|
|
|
|
enum {
|
|
FLASH_PART_READONLY = (1<<0),
|
|
FLASH_PART_FILESYSTEM = (1<<2)
|
|
};
|
|
|
|
/**
|
|
* struct flash_interface - interface for flash operations
|
|
*/
|
|
struct flash_interface {
|
|
int (*erase)(device_t, struct flash_erase_instruction *);
|
|
int (*read)(device_t, flash_off_t, size_t, size_t *, uint8_t *);
|
|
int (*write)(device_t, flash_off_t, size_t, size_t *, const uint8_t *);
|
|
int (*block_markbad)(device_t, flash_off_t);
|
|
int (*block_isbad)(device_t, flash_off_t, bool *);
|
|
int (*sync)(device_t);
|
|
|
|
int (*submit)(device_t, struct buf *);
|
|
|
|
uint32_t page_size;
|
|
uint32_t erasesize;
|
|
uint32_t writesize;
|
|
uint32_t minor;
|
|
uint8_t type;
|
|
};
|
|
|
|
/**
|
|
* struct cache - for caching writes on block device
|
|
*/
|
|
struct flash_cache {
|
|
size_t fc_len;
|
|
flash_off_t fc_block;
|
|
uint8_t *fc_data;
|
|
};
|
|
|
|
device_t flash_attach_mi(struct flash_interface *, device_t);
|
|
const struct flash_interface *flash_get_interface(dev_t);
|
|
const struct flash_softc *flash_get_softc(dev_t);
|
|
device_t flash_get_device(dev_t);
|
|
flash_size_t flash_get_size(dev_t);
|
|
|
|
/* flash operations should be used through these */
|
|
int flash_erase(device_t, struct flash_erase_instruction *);
|
|
int flash_read(device_t, flash_off_t, size_t, size_t *, uint8_t *);
|
|
int flash_write(device_t, flash_off_t, size_t, size_t *, const uint8_t *);
|
|
int flash_block_markbad(device_t, flash_off_t);
|
|
int flash_block_isbad(device_t, flash_off_t, bool *);
|
|
int flash_sync(device_t);
|
|
|
|
/*
|
|
* check_pattern - checks the buffer only contains the byte pattern
|
|
*
|
|
* This functions checks if the buffer only contains a specified byte pattern.
|
|
* Returns %0 if found something else, %1 otherwise.
|
|
*/
|
|
static inline int
|
|
check_pattern(const void *buf, uint8_t patt, size_t offset, size_t size)
|
|
{
|
|
size_t i;
|
|
for (i = offset; i < size; i++) {
|
|
if (((const uint8_t *)buf)[i] != patt)
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#endif /* _FLASH_H_ */
|