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/*-
* Copyright (C) 2012-2013 Intel Corporation
* 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/param.h>
#include <sys/ioccom.h>
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "nvmecontrol.h"
typedef void (*nvme_fn_t)(int argc, char *argv[]);
struct nvme_function {
const char *name;
nvme_fn_t fn;
const char *usage;
} funcs[] = {
{"devlist", devlist, DEVLIST_USAGE},
{"identify", identify, IDENTIFY_USAGE},
{"perftest", perftest, PERFTEST_USAGE},
{"reset", reset, RESET_USAGE},
{NULL, NULL, NULL},
};
static void
usage(void)
{
struct nvme_function *f;
f = funcs;
fprintf(stderr, "usage:\n");
while (f->name != NULL) {
fprintf(stderr, "%s", f->usage);
f++;
}
exit(EX_USAGE);
}
static void
print_bytes(void *data, uint32_t length)
{
uint32_t i, j;
uint8_t *p, *end;
end = (uint8_t *)data + length;
for (i = 0; i < length; i++) {
p = (uint8_t *)data + (i*16);
printf("%03x: ", i*16);
for (j = 0; j < 16 && p < end; j++)
printf("%02x ", *p++);
if (p >= end)
break;
printf("\n");
}
printf("\n");
}
static void
print_dwords(void *data, uint32_t length)
{
uint32_t *p;
uint32_t i, j;
p = (uint32_t *)data;
length /= sizeof(uint32_t);
for (i = 0; i < length; i+=8) {
printf("%03x: ", i*4);
for (j = 0; j < 8; j++)
printf("%08x ", p[i+j]);
printf("\n");
}
printf("\n");
}
void
print_hex(void *data, uint32_t length)
{
if (length >= sizeof(uint32_t) || length % sizeof(uint32_t) == 0)
print_dwords(data, length);
else
print_bytes(data, length);
}
void
read_controller_data(int fd, struct nvme_controller_data *cdata)
{
struct nvme_pt_command pt;
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_IDENTIFY;
pt.cmd.cdw10 = 1;
pt.buf = cdata;
pt.len = sizeof(*cdata);
pt.is_read = 1;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
printf("Identify request failed. errno=%d (%s)\n",
errno, strerror(errno));
exit(EX_IOERR);
}
if (nvme_completion_is_error(&pt.cpl)) {
printf("Passthrough command returned error.\n");
exit(EX_IOERR);
}
}
void
read_namespace_data(int fd, int nsid, struct nvme_namespace_data *nsdata)
{
struct nvme_pt_command pt;
memset(&pt, 0, sizeof(pt));
pt.cmd.opc = NVME_OPC_IDENTIFY;
pt.cmd.nsid = nsid;
pt.buf = nsdata;
pt.len = sizeof(*nsdata);
pt.is_read = 1;
if (ioctl(fd, NVME_PASSTHROUGH_CMD, &pt) < 0) {
printf("Identify request failed. errno=%d (%s)\n",
errno, strerror(errno));
exit(EX_IOERR);
}
if (nvme_completion_is_error(&pt.cpl)) {
printf("Passthrough command returned error.\n");
exit(EX_IOERR);
}
}
int
open_dev(const char *str, int *fd, int show_error, int exit_on_error)
{
struct stat devstat;
char full_path[64];
if (!strnstr(str, NVME_CTRLR_PREFIX, strlen(NVME_CTRLR_PREFIX))) {
if (show_error)
fprintf(stderr,
"Controller/namespace IDs must begin with '%s'.\n",
NVME_CTRLR_PREFIX);
if (exit_on_error)
exit(EX_USAGE);
else
return (EX_USAGE);
}
snprintf(full_path, sizeof(full_path), "/dev/%s", str);
if (stat(full_path, &devstat) != 0) {
if (show_error)
fprintf(stderr, "Could not stat %s. errno=%d (%s)\n",
full_path, errno, strerror(errno));
if (exit_on_error)
exit(EX_NOINPUT);
else
return (EX_NOINPUT);
}
*fd = open(full_path, O_RDWR);
if (*fd < 0) {
if (show_error)
fprintf(stderr, "Could not open %s. errno=%d (%s)\n",
full_path, errno, strerror(errno));
if (exit_on_error)
exit(EX_NOPERM);
else
return (EX_NOPERM);
}
return (EX_OK);
}
int
main(int argc, char *argv[])
{
struct nvme_function *f;
if (argc < 2)
usage();
f = funcs;
while (f->name != NULL) {
if (strcmp(argv[1], f->name) == 0)
f->fn(argc-1, &argv[1]);
f++;
}
usage();
return (0);
}
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