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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
187 lines
5.1 KiB
C
187 lines
5.1 KiB
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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/proc.h>
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#include <sys/alq.h>
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#include <sys/time.h>
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#include <machine/stdarg.h>
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#include <dev/nand/nandsim_log.h>
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int nandsim_log_level;
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int nandsim_log_output;
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int log_size = NANDSIM_RAM_LOG_SIZE;
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static int nandsim_entry_size = NANDSIM_ENTRY_SIZE;
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static int nandsim_entry_count = NANDSIM_ENTRY_COUNT;
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static int str_index = 0;
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static char string[NANDSIM_ENTRY_SIZE + 1] = {0};
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int
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nandsim_log_init(struct nandsim_softc *sc, char *filename)
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{
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int error = 0;
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if (nandsim_log_output == NANDSIM_OUTPUT_FILE) {
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error = alq_open(&sc->alq, filename,
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curthread->td_ucred, 0644,
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nandsim_entry_size, nandsim_entry_count);
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} else if (nandsim_log_output == NANDSIM_OUTPUT_RAM) {
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sc->log_buff = malloc(log_size, M_NANDSIM, M_WAITOK | M_ZERO);
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if (!sc->log_buff)
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error = ENOMEM;
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}
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return (error);
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}
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void
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nandsim_log_close(struct nandsim_softc *sc)
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{
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if (nandsim_log_output == NANDSIM_OUTPUT_FILE) {
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memset(&string[str_index], 0, NANDSIM_ENTRY_SIZE - str_index);
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alq_write(sc->alq, (void *) string, ALQ_NOWAIT);
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str_index = 0;
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string[0] = '\0';
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alq_close(sc->alq);
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} else if (nandsim_log_output == NANDSIM_OUTPUT_RAM) {
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free(sc->log_buff, M_NANDSIM);
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sc->log_buff = NULL;
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}
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}
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void
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nandsim_log(struct nandsim_chip *chip, int level, const char *fmt, ...)
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{
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char hdr[TIME_STR_SIZE];
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char tmp[NANDSIM_ENTRY_SIZE];
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struct nandsim_softc *sc;
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struct timeval currtime;
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va_list ap;
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int hdr_len, len, rest;
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if (nandsim_log_output == NANDSIM_OUTPUT_NONE)
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return;
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if (chip == NULL)
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return;
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sc = chip->sc;
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if (!sc->alq && nandsim_log_output == NANDSIM_OUTPUT_FILE)
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return;
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if (level <= nandsim_log_level) {
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microtime(&currtime);
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hdr_len = sprintf(hdr, "%08jd.%08li [chip:%d, ctrl:%d]: ",
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(intmax_t)currtime.tv_sec, currtime.tv_usec,
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chip->chip_num, chip->ctrl_num);
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switch(nandsim_log_output) {
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case NANDSIM_OUTPUT_CONSOLE:
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printf("%s", hdr);
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va_start(ap, fmt);
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vprintf(fmt, ap);
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va_end(ap);
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break;
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case NANDSIM_OUTPUT_RAM:
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va_start(ap, fmt);
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len = vsnprintf(tmp, NANDSIM_ENTRY_SIZE - 1, fmt, ap);
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tmp[NANDSIM_ENTRY_SIZE - 1] = 0;
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va_end(ap);
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rest = log_size - sc->log_idx - 1;
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if (rest >= hdr_len) {
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bcopy(hdr, &sc->log_buff[sc->log_idx],
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hdr_len);
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sc->log_idx += hdr_len;
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sc->log_buff[sc->log_idx] = 0;
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} else {
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bcopy(hdr, &sc->log_buff[sc->log_idx], rest);
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bcopy(&hdr[rest], sc->log_buff,
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hdr_len - rest);
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sc->log_idx = hdr_len - rest;
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sc->log_buff[sc->log_idx] = 0;
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}
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rest = log_size - sc->log_idx - 1;
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if (rest >= len) {
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bcopy(tmp, &sc->log_buff[sc->log_idx], len);
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sc->log_idx += len;
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sc->log_buff[sc->log_idx] = 0;
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} else {
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bcopy(tmp, &sc->log_buff[sc->log_idx], rest);
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bcopy(&tmp[rest], sc->log_buff, len - rest);
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sc->log_idx = len - rest;
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sc->log_buff[sc->log_idx] = 0;
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}
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break;
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case NANDSIM_OUTPUT_FILE:
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va_start(ap, fmt);
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len = vsnprintf(tmp, NANDSIM_ENTRY_SIZE - 1, fmt, ap);
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tmp[NANDSIM_ENTRY_SIZE - 1] = 0;
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va_end(ap);
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rest = NANDSIM_ENTRY_SIZE - str_index;
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if (rest >= hdr_len) {
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strcat(string, hdr);
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str_index += hdr_len;
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} else {
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strlcat(string, hdr, NANDSIM_ENTRY_SIZE + 1);
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alq_write(sc->alq, (void *) string,
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ALQ_NOWAIT);
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strcpy(string, &hdr[rest]);
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str_index = hdr_len - rest;
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}
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rest = NANDSIM_ENTRY_SIZE - str_index;
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if (rest >= len) {
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strcat(string, tmp);
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str_index += len;
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} else {
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strlcat(string, tmp, NANDSIM_ENTRY_SIZE + 1);
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alq_write(sc->alq, (void *) string,
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ALQ_NOWAIT);
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strcpy(string, &tmp[rest]);
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str_index = len - rest;
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}
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break;
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default:
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break;
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}
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}
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}
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