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Code Issues Releases Activity

Move 128-bit integer routines to util.c so they can be used by more

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than just the log page code.

Sponsored by: Netflix, Inc
Submitted by: Matt Williams (via D11330)
This commit is contained in:
Warner Losh 2017-06-27 20:24:25 +00:00
parent 34d3e89f33
commit 970d454f63
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=320423
4 changed files with 82 additions and 49 deletions
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2
sbin/nvmecontrol/Makefile
View File

@ -3,7 +3,7 @@
PACKAGE=runtime
PROG= nvmecontrol
SRCS= nvmecontrol.c devlist.c firmware.c identify.c logpage.c \
perftest.c reset.c nvme_util.c power.c wdc.c
perftest.c reset.c nvme_util.c power.c util.c wdc.c
MAN= nvmecontrol.8
.PATH: ${SRCTOP}/sys/dev/nvme

48
sbin/nvmecontrol/logpage.c
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@ -80,54 +80,6 @@ print_bin(void *data, uint32_t length)
write(STDOUT_FILENO, data, length);
}
/*
* 128-bit integer augments to standard values. On i386 this
* doesn't exist, so we use 64-bit values. The 128-bit counters
* are crazy anyway, since for this purpose, you'd need a
* billion IOPs for billions of seconds to overflow them.
* So, on 32-bit i386, you'll get truncated values.
*/
#define UINT128_DIG 39
#ifdef __i386__
typedef uint64_t uint128_t;
#else
typedef __uint128_t uint128_t;
#endif
static inline uint128_t
to128(void *p)
{
return *(uint128_t *)p;
}
static char *
uint128_to_str(uint128_t u, char *buf, size_t buflen)
{
char *end = buf + buflen - 1;
*end-- = '\0';
if (u == 0)
*end-- = '0';
while (u && end >= buf) {
*end-- = u % 10 + '0';
u /= 10;
}
end++;
if (u != 0)
return NULL;
return end;
}
/* "Missing" from endian.h */
static __inline uint64_t
le48dec(const void *pp)
{
uint8_t const *p = (uint8_t const *)pp;
return (((uint64_t)le16dec(p + 4) << 32) | le32dec(p));
}
static void *
get_log_buffer(uint32_t size)
{

22
sbin/nvmecontrol/nvmecontrol.h
View File

@ -88,5 +88,27 @@ void read_logpage(int fd, uint8_t log_page, int nsid, void *payload,
void gen_usage(struct nvme_function *);
void dispatch(int argc, char *argv[], struct nvme_function *f);
/* Utility Routines */
/*
* 128-bit integer augments to standard values. On i386 this
* doesn't exist, so we use 64-bit values. So, on 32-bit i386,
* you'll get truncated values until someone implement 128bit
* ints in sofware.
*/
#define UINT128_DIG 39
#ifdef __i386__
typedef uint64_t uint128_t;
#else
typedef __uint128_t uint128_t;
#endif
static __inline uint128_t
to128(void *p)
{
return *(uint128_t *)p;
}
uint64_t le48dec(const void *pp);
char * uint128_to_str(uint128_t u, char *buf, size_t buflen);
#endif

59
sbin/nvmecontrol/util.c Normal file
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@ -0,0 +1,59 @@
/*-
* Copyright (c) 2017 Netflix, Inc
* All rights reserved.
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/endian.h>
#include "nvmecontrol.h"
char *
uint128_to_str(uint128_t u, char *buf, size_t buflen)
{
char *end = buf + buflen - 1;
*end-- = '\0';
if (u == 0)
*end-- = '0';
while (u && end >= buf) {
*end-- = u % 10 + '0';
u /= 10;
}
end++;
if (u != 0)
return NULL;
return end;
}
/* "Missing" from endian.h */
uint64_t
le48dec(const void *pp)
{
uint8_t const *p = (uint8_t const *)pp;
return (((uint64_t)le16dec(p + 4) << 32) | le32dec(p));
}