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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2022 Tintri by DDN, Inc. All rights reserved.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stropts.h>
#include <err.h>
#include <libdevinfo.h>
#include <sys/nvme.h>
#include <assert.h>
#include "nvmeadm.h"
static boolean_t
nvme_ioctl(int fd, int ioc, size_t *bufsize, void **buf, uint64_t arg,
uint64_t *res)
{
nvme_ioctl_t nioc = { 0 };
void *ptr = NULL;
int ret;
if (bufsize != NULL && *bufsize != 0) {
assert(buf != NULL);
if (*buf != NULL) {
nioc.n_buf = (uintptr_t)*buf;
} else {
ptr = calloc(1, *bufsize);
if (ptr == NULL)
err(-1, "nvme_ioctl()");
nioc.n_buf = (uintptr_t)ptr;
}
nioc.n_len = *bufsize;
}
nioc.n_arg = arg;
ret = ioctl(fd, ioc, &nioc);
if (res != NULL)
*res = nioc.n_arg;
if (ret != 0) {
/*
* We're not clearing *res here as there may be cases where
* we get an error _and_ we have interesting information in
* returned in *res that callers of this functions might be
* interested in.
*/
if (debug)
warn("nvme_ioctl()");
if (ptr != NULL)
free(ptr);
return (B_FALSE);
}
if (bufsize != NULL)
*bufsize = nioc.n_len;
if (buf != NULL)
*buf = (void *)nioc.n_buf;
return (B_TRUE);
}
nvme_capabilities_t *
nvme_capabilities(int fd)
{
void *cap = NULL;
size_t bufsize = sizeof (nvme_capabilities_t);
(void) nvme_ioctl(fd, NVME_IOC_CAPABILITIES, &bufsize, &cap, 0, NULL);
return (cap);
}
nvme_version_t *
nvme_version(int fd)
{
void *vs = NULL;
size_t bufsize = sizeof (nvme_version_t);
(void) nvme_ioctl(fd, NVME_IOC_VERSION, &bufsize, &vs, 0, NULL);
return (vs);
}
void *
nvme_identify(int fd, uint8_t cns)
{
void *idctl = NULL;
size_t bufsize = NVME_IDENTIFY_BUFSIZE;
(void) nvme_ioctl(fd, NVME_IOC_IDENTIFY, &bufsize, &idctl, cns, NULL);
return (idctl);
}
void *
nvme_get_logpage(int fd, uint8_t logpage, size_t *bufsize)
{
void *buf = NULL;
(void) nvme_ioctl(fd, NVME_IOC_GET_LOGPAGE, bufsize, &buf, logpage,
NULL);
return (buf);
}
boolean_t
nvme_get_feature(int fd, uint8_t feature, uint32_t arg, uint64_t *res,
size_t *bufsize, void **buf)
{
return (nvme_ioctl(fd, NVME_IOC_GET_FEATURES, bufsize, buf,
(uint64_t)feature << 32 | arg, res));
}
int
nvme_intr_cnt(int fd)
{
uint64_t res = 0;
if (!nvme_ioctl(fd, NVME_IOC_INTR_CNT, NULL, NULL, 0, &res))
return (-1);
return ((int)res);
}
boolean_t
nvme_format_nvm(int fd, uint8_t lbaf, uint8_t ses)
{
nvme_format_nvm_t frmt = { 0 };
frmt.b.fm_lbaf = lbaf & 0xf;
frmt.b.fm_ses = ses & 0x7;
return (nvme_ioctl(fd, NVME_IOC_FORMAT, NULL, NULL, frmt.r, NULL));
}
boolean_t
nvme_detach(int fd)
{
return (nvme_ioctl(fd, NVME_IOC_DETACH, NULL, NULL, 0, NULL));
}
boolean_t
nvme_attach(int fd)
{
return (nvme_ioctl(fd, NVME_IOC_ATTACH, NULL, NULL, 0, NULL));
}
boolean_t
nvme_firmware_load(int fd, void *buf, size_t len, offset_t offset, uint16_t *sc)
{
boolean_t rv;
uint64_t res;
rv = nvme_ioctl(fd, NVME_IOC_FIRMWARE_DOWNLOAD, &len, &buf, offset,
&res);
/*
* If the hardware returned a command-specific status code, we'll get
* it as a negative value from the driver.
*/
if ((int64_t)res < 0)
*sc = (uint16_t)-(int64_t)res;
else
*sc = 0;
return (rv);
}
boolean_t
nvme_firmware_commit(int fd, int slot, int action, uint16_t *sc)
{
boolean_t rv;
uint64_t res;
rv = nvme_ioctl(fd, NVME_IOC_FIRMWARE_COMMIT, NULL, NULL,
((uint64_t)action << 32) | slot, &res);
/*
* If the hardware returned a command-specific status code, we'll get
* it as a negative value from the driver.
*/
if ((int64_t)res < 0)
*sc = (uint16_t)-(int64_t)res;
else
*sc = 0;
return (rv);
}
uint32_t
nvme_namespace_state(int fd)
{
uint64_t res = 0;
/*
* Ask the driver for the namespace state.
*/
if (nvme_ioctl(fd, NVME_IOC_NS_STATE, NULL, NULL, 0, &res)) {
return (res);
}
/*
* We're only here if the ioctl failed, which it really shouldnt. If so,
* we treat this the same as if the namespace was ignored.
*/
return (NVME_NS_STATE_IGNORED);
}
int
nvme_open(di_minor_t minor, boolean_t excl)
{
char *devpath, *path;
int fd;
if ((devpath = di_devfs_minor_path(minor)) == NULL)
err(-1, "nvme_open()");
if (asprintf(&path, "/devices%s", devpath) < 0) {
di_devfs_path_free(devpath);
err(-1, "nvme_open()");
}
di_devfs_path_free(devpath);
fd = open(path, O_RDWR | (excl ? O_EXCL: 0));
if (fd < 0) {
if (debug)
warn("nvme_open(%s)", path);
free(path);
return (-1);
}
free(path);
return (fd);
}
void
nvme_close(int fd)
{
(void) close(fd);
}
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