6f7c735300
The NAND Flash environment consists of several distinct components: - NAND framework (drivers harness for NAND controllers and NAND chips) - NAND simulator (NANDsim) - NAND file system (NAND FS) - Companion tools and utilities - Documentation (manual pages) This work is still experimental. Please use with caution. Obtained from: Semihalf Supported by: FreeBSD Foundation, Juniper Networks
166 lines
3.1 KiB
Objective-C
166 lines
3.1 KiB
Objective-C
#-
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# Copyright (C) 2009-2012 Semihalf
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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# NAND controller interface description
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#
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#include <sys/bus.h>
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#include <dev/nand/nand.h>
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INTERFACE nfc;
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CODE {
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static int nfc_default_method(device_t dev)
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{
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return (0);
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}
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static int nfc_softecc_get(device_t dev, void *buf, int pagesize,
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void *ecc, int *needwrite)
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{
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*needwrite = 1;
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return (nand_softecc_get(dev, buf, pagesize, ecc));
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}
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static int nfc_softecc_correct(device_t dev, void *buf, int pagesize,
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void *readecc, void *calcecc)
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{
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return (nand_softecc_correct(dev, buf, pagesize, readecc,
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calcecc));
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}
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};
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# Send command to a NAND chip
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#
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# Return values:
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# 0: Success
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#
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METHOD int send_command {
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device_t dev;
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uint8_t command;
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};
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# Send address to a NAND chip
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#
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# Return values:
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# 0: Success
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#
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METHOD int send_address {
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device_t dev;
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uint8_t address;
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};
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# Read byte
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#
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# Return values:
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# byte read
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#
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METHOD uint8_t read_byte {
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device_t dev;
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};
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# Write byte
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#
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METHOD void write_byte {
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device_t dev;
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uint8_t byte;
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};
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# Read word
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#
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# Return values:
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# word read
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#
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METHOD uint16_t read_word {
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device_t dev;
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};
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# Write word
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#
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METHOD void write_word {
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device_t dev;
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uint16_t word;
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};
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# Read buf
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#
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METHOD void read_buf {
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device_t dev;
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void *buf;
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uint32_t len;
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};
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# Write buf
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#
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METHOD void write_buf {
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device_t dev;
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void *buf;
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uint32_t len;
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};
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# Select CS
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#
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METHOD int select_cs {
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device_t dev;
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uint8_t cs;
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};
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# Read ready/busy signal
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#
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METHOD int read_rnb {
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device_t dev;
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};
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# Start command
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#
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# Return values:
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# 0: Success
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#
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METHOD int start_command {
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device_t dev;
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} DEFAULT nfc_default_method;
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# Generate ECC or get it from H/W
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#
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METHOD int get_ecc {
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device_t dev;
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void *buf;
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int pagesize;
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void *ecc;
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int *needwrite;
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} DEFAULT nfc_softecc_get;
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# Correct ECC
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#
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METHOD int correct_ecc {
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device_t dev;
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void *buf;
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int pagesize;
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void *readecc;
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void *calcecc;
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} DEFAULT nfc_softecc_correct;
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