628 lines
15 KiB
C
628 lines
15 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* 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>
|
|
#include <sys/param.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/disk.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/ioccom.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
|
|
#include <geom/geom.h>
|
|
|
|
#include "nvme_private.h"
|
|
|
|
static void nvme_bio_child_inbed(struct bio *parent, int bio_error);
|
|
static void nvme_bio_child_done(void *arg,
|
|
const struct nvme_completion *cpl);
|
|
static uint32_t nvme_get_num_segments(uint64_t addr, uint64_t size,
|
|
uint32_t alignment);
|
|
static void nvme_free_child_bios(int num_bios,
|
|
struct bio **child_bios);
|
|
static struct bio ** nvme_allocate_child_bios(int num_bios);
|
|
static struct bio ** nvme_construct_child_bios(struct bio *bp,
|
|
uint32_t alignment,
|
|
int *num_bios);
|
|
static int nvme_ns_split_bio(struct nvme_namespace *ns,
|
|
struct bio *bp,
|
|
uint32_t alignment);
|
|
|
|
static int
|
|
nvme_ns_ioctl(struct cdev *cdev, u_long cmd, caddr_t arg, int flag,
|
|
struct thread *td)
|
|
{
|
|
struct nvme_namespace *ns;
|
|
struct nvme_controller *ctrlr;
|
|
struct nvme_pt_command *pt;
|
|
|
|
ns = cdev->si_drv1;
|
|
ctrlr = ns->ctrlr;
|
|
|
|
switch (cmd) {
|
|
case NVME_IO_TEST:
|
|
case NVME_BIO_TEST:
|
|
nvme_ns_test(ns, cmd, arg);
|
|
break;
|
|
case NVME_PASSTHROUGH_CMD:
|
|
pt = (struct nvme_pt_command *)arg;
|
|
return (nvme_ctrlr_passthrough_cmd(ctrlr, pt, ns->id,
|
|
1 /* is_user_buffer */, 0 /* is_admin_cmd */));
|
|
case NVME_GET_NSID:
|
|
{
|
|
struct nvme_get_nsid *gnsid = (struct nvme_get_nsid *)arg;
|
|
strncpy(gnsid->cdev, device_get_nameunit(ctrlr->dev),
|
|
sizeof(gnsid->cdev));
|
|
gnsid->cdev[sizeof(gnsid->cdev) - 1] = '\0';
|
|
gnsid->nsid = ns->id;
|
|
break;
|
|
}
|
|
case DIOCGMEDIASIZE:
|
|
*(off_t *)arg = (off_t)nvme_ns_get_size(ns);
|
|
break;
|
|
case DIOCGSECTORSIZE:
|
|
*(u_int *)arg = nvme_ns_get_sector_size(ns);
|
|
break;
|
|
default:
|
|
return (ENOTTY);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
nvme_ns_open(struct cdev *dev __unused, int flags, int fmt __unused,
|
|
struct thread *td)
|
|
{
|
|
int error = 0;
|
|
|
|
if (flags & FWRITE)
|
|
error = securelevel_gt(td->td_ucred, 0);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
nvme_ns_close(struct cdev *dev __unused, int flags, int fmt __unused,
|
|
struct thread *td)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
nvme_ns_strategy_done(void *arg, const struct nvme_completion *cpl)
|
|
{
|
|
struct bio *bp = arg;
|
|
|
|
/*
|
|
* TODO: add more extensive translation of NVMe status codes
|
|
* to different bio error codes (i.e. EIO, EINVAL, etc.)
|
|
*/
|
|
if (nvme_completion_is_error(cpl)) {
|
|
bp->bio_error = EIO;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
bp->bio_resid = bp->bio_bcount;
|
|
} else
|
|
bp->bio_resid = 0;
|
|
|
|
biodone(bp);
|
|
}
|
|
|
|
static void
|
|
nvme_ns_strategy(struct bio *bp)
|
|
{
|
|
struct nvme_namespace *ns;
|
|
int err;
|
|
|
|
ns = bp->bio_dev->si_drv1;
|
|
err = nvme_ns_bio_process(ns, bp, nvme_ns_strategy_done);
|
|
|
|
if (err) {
|
|
bp->bio_error = err;
|
|
bp->bio_flags |= BIO_ERROR;
|
|
bp->bio_resid = bp->bio_bcount;
|
|
biodone(bp);
|
|
}
|
|
|
|
}
|
|
|
|
static struct cdevsw nvme_ns_cdevsw = {
|
|
.d_version = D_VERSION,
|
|
.d_flags = D_DISK,
|
|
.d_read = physread,
|
|
.d_write = physwrite,
|
|
.d_open = nvme_ns_open,
|
|
.d_close = nvme_ns_close,
|
|
.d_strategy = nvme_ns_strategy,
|
|
.d_ioctl = nvme_ns_ioctl
|
|
};
|
|
|
|
uint32_t
|
|
nvme_ns_get_max_io_xfer_size(struct nvme_namespace *ns)
|
|
{
|
|
return ns->ctrlr->max_xfer_size;
|
|
}
|
|
|
|
uint32_t
|
|
nvme_ns_get_sector_size(struct nvme_namespace *ns)
|
|
{
|
|
uint8_t flbas_fmt, lbads;
|
|
|
|
flbas_fmt = (ns->data.flbas >> NVME_NS_DATA_FLBAS_FORMAT_SHIFT) &
|
|
NVME_NS_DATA_FLBAS_FORMAT_MASK;
|
|
lbads = (ns->data.lbaf[flbas_fmt] >> NVME_NS_DATA_LBAF_LBADS_SHIFT) &
|
|
NVME_NS_DATA_LBAF_LBADS_MASK;
|
|
|
|
return (1 << lbads);
|
|
}
|
|
|
|
uint64_t
|
|
nvme_ns_get_num_sectors(struct nvme_namespace *ns)
|
|
{
|
|
return (ns->data.nsze);
|
|
}
|
|
|
|
uint64_t
|
|
nvme_ns_get_size(struct nvme_namespace *ns)
|
|
{
|
|
return (nvme_ns_get_num_sectors(ns) * nvme_ns_get_sector_size(ns));
|
|
}
|
|
|
|
uint32_t
|
|
nvme_ns_get_flags(struct nvme_namespace *ns)
|
|
{
|
|
return (ns->flags);
|
|
}
|
|
|
|
const char *
|
|
nvme_ns_get_serial_number(struct nvme_namespace *ns)
|
|
{
|
|
return ((const char *)ns->ctrlr->cdata.sn);
|
|
}
|
|
|
|
const char *
|
|
nvme_ns_get_model_number(struct nvme_namespace *ns)
|
|
{
|
|
return ((const char *)ns->ctrlr->cdata.mn);
|
|
}
|
|
|
|
const struct nvme_namespace_data *
|
|
nvme_ns_get_data(struct nvme_namespace *ns)
|
|
{
|
|
|
|
return (&ns->data);
|
|
}
|
|
|
|
uint32_t
|
|
nvme_ns_get_stripesize(struct nvme_namespace *ns)
|
|
{
|
|
uint32_t ss;
|
|
|
|
if (((ns->data.nsfeat >> NVME_NS_DATA_NSFEAT_NPVALID_SHIFT) &
|
|
NVME_NS_DATA_NSFEAT_NPVALID_MASK) != 0) {
|
|
ss = nvme_ns_get_sector_size(ns);
|
|
if (ns->data.npwa != 0)
|
|
return ((ns->data.npwa + 1) * ss);
|
|
else if (ns->data.npwg != 0)
|
|
return ((ns->data.npwg + 1) * ss);
|
|
}
|
|
return (ns->boundary);
|
|
}
|
|
|
|
static void
|
|
nvme_ns_bio_done(void *arg, const struct nvme_completion *status)
|
|
{
|
|
struct bio *bp = arg;
|
|
nvme_cb_fn_t bp_cb_fn;
|
|
|
|
bp_cb_fn = bp->bio_driver1;
|
|
|
|
if (bp->bio_driver2)
|
|
free(bp->bio_driver2, M_NVME);
|
|
|
|
if (nvme_completion_is_error(status)) {
|
|
bp->bio_flags |= BIO_ERROR;
|
|
if (bp->bio_error == 0)
|
|
bp->bio_error = EIO;
|
|
}
|
|
|
|
if ((bp->bio_flags & BIO_ERROR) == 0)
|
|
bp->bio_resid = 0;
|
|
else
|
|
bp->bio_resid = bp->bio_bcount;
|
|
|
|
bp_cb_fn(bp, status);
|
|
}
|
|
|
|
static void
|
|
nvme_bio_child_inbed(struct bio *parent, int bio_error)
|
|
{
|
|
struct nvme_completion parent_cpl;
|
|
int children, inbed;
|
|
|
|
if (bio_error != 0) {
|
|
parent->bio_flags |= BIO_ERROR;
|
|
parent->bio_error = bio_error;
|
|
}
|
|
|
|
/*
|
|
* atomic_fetchadd will return value before adding 1, so we still
|
|
* must add 1 to get the updated inbed number. Save bio_children
|
|
* before incrementing to guard against race conditions when
|
|
* two children bios complete on different queues.
|
|
*/
|
|
children = atomic_load_acq_int(&parent->bio_children);
|
|
inbed = atomic_fetchadd_int(&parent->bio_inbed, 1) + 1;
|
|
if (inbed == children) {
|
|
bzero(&parent_cpl, sizeof(parent_cpl));
|
|
if (parent->bio_flags & BIO_ERROR) {
|
|
parent_cpl.status &= ~(NVME_STATUS_SC_MASK << NVME_STATUS_SC_SHIFT);
|
|
parent_cpl.status |= (NVME_SC_DATA_TRANSFER_ERROR) << NVME_STATUS_SC_SHIFT;
|
|
}
|
|
nvme_ns_bio_done(parent, &parent_cpl);
|
|
}
|
|
}
|
|
|
|
static void
|
|
nvme_bio_child_done(void *arg, const struct nvme_completion *cpl)
|
|
{
|
|
struct bio *child = arg;
|
|
struct bio *parent;
|
|
int bio_error;
|
|
|
|
parent = child->bio_parent;
|
|
g_destroy_bio(child);
|
|
bio_error = nvme_completion_is_error(cpl) ? EIO : 0;
|
|
nvme_bio_child_inbed(parent, bio_error);
|
|
}
|
|
|
|
static uint32_t
|
|
nvme_get_num_segments(uint64_t addr, uint64_t size, uint32_t align)
|
|
{
|
|
uint32_t num_segs, offset, remainder;
|
|
|
|
if (align == 0)
|
|
return (1);
|
|
|
|
KASSERT((align & (align - 1)) == 0, ("alignment not power of 2\n"));
|
|
|
|
num_segs = size / align;
|
|
remainder = size & (align - 1);
|
|
offset = addr & (align - 1);
|
|
if (remainder > 0 || offset > 0)
|
|
num_segs += 1 + (remainder + offset - 1) / align;
|
|
return (num_segs);
|
|
}
|
|
|
|
static void
|
|
nvme_free_child_bios(int num_bios, struct bio **child_bios)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_bios; i++) {
|
|
if (child_bios[i] != NULL)
|
|
g_destroy_bio(child_bios[i]);
|
|
}
|
|
|
|
free(child_bios, M_NVME);
|
|
}
|
|
|
|
static struct bio **
|
|
nvme_allocate_child_bios(int num_bios)
|
|
{
|
|
struct bio **child_bios;
|
|
int err = 0, i;
|
|
|
|
child_bios = malloc(num_bios * sizeof(struct bio *), M_NVME, M_NOWAIT);
|
|
if (child_bios == NULL)
|
|
return (NULL);
|
|
|
|
for (i = 0; i < num_bios; i++) {
|
|
child_bios[i] = g_new_bio();
|
|
if (child_bios[i] == NULL)
|
|
err = ENOMEM;
|
|
}
|
|
|
|
if (err == ENOMEM) {
|
|
nvme_free_child_bios(num_bios, child_bios);
|
|
return (NULL);
|
|
}
|
|
|
|
return (child_bios);
|
|
}
|
|
|
|
static struct bio **
|
|
nvme_construct_child_bios(struct bio *bp, uint32_t alignment, int *num_bios)
|
|
{
|
|
struct bio **child_bios;
|
|
struct bio *child;
|
|
uint64_t cur_offset;
|
|
caddr_t data;
|
|
uint32_t rem_bcount;
|
|
int i;
|
|
struct vm_page **ma;
|
|
uint32_t ma_offset;
|
|
|
|
*num_bios = nvme_get_num_segments(bp->bio_offset, bp->bio_bcount,
|
|
alignment);
|
|
child_bios = nvme_allocate_child_bios(*num_bios);
|
|
if (child_bios == NULL)
|
|
return (NULL);
|
|
|
|
bp->bio_children = *num_bios;
|
|
bp->bio_inbed = 0;
|
|
cur_offset = bp->bio_offset;
|
|
rem_bcount = bp->bio_bcount;
|
|
data = bp->bio_data;
|
|
ma_offset = bp->bio_ma_offset;
|
|
ma = bp->bio_ma;
|
|
|
|
for (i = 0; i < *num_bios; i++) {
|
|
child = child_bios[i];
|
|
child->bio_parent = bp;
|
|
child->bio_cmd = bp->bio_cmd;
|
|
child->bio_offset = cur_offset;
|
|
child->bio_bcount = min(rem_bcount,
|
|
alignment - (cur_offset & (alignment - 1)));
|
|
child->bio_flags = bp->bio_flags;
|
|
if (bp->bio_flags & BIO_UNMAPPED) {
|
|
child->bio_ma_offset = ma_offset;
|
|
child->bio_ma = ma;
|
|
child->bio_ma_n =
|
|
nvme_get_num_segments(child->bio_ma_offset,
|
|
child->bio_bcount, PAGE_SIZE);
|
|
ma_offset = (ma_offset + child->bio_bcount) &
|
|
PAGE_MASK;
|
|
ma += child->bio_ma_n;
|
|
if (ma_offset != 0)
|
|
ma -= 1;
|
|
} else {
|
|
child->bio_data = data;
|
|
data += child->bio_bcount;
|
|
}
|
|
cur_offset += child->bio_bcount;
|
|
rem_bcount -= child->bio_bcount;
|
|
}
|
|
|
|
return (child_bios);
|
|
}
|
|
|
|
static int
|
|
nvme_ns_split_bio(struct nvme_namespace *ns, struct bio *bp,
|
|
uint32_t alignment)
|
|
{
|
|
struct bio *child;
|
|
struct bio **child_bios;
|
|
int err, i, num_bios;
|
|
|
|
child_bios = nvme_construct_child_bios(bp, alignment, &num_bios);
|
|
if (child_bios == NULL)
|
|
return (ENOMEM);
|
|
|
|
for (i = 0; i < num_bios; i++) {
|
|
child = child_bios[i];
|
|
err = nvme_ns_bio_process(ns, child, nvme_bio_child_done);
|
|
if (err != 0) {
|
|
nvme_bio_child_inbed(bp, err);
|
|
g_destroy_bio(child);
|
|
}
|
|
}
|
|
|
|
free(child_bios, M_NVME);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
nvme_ns_bio_process(struct nvme_namespace *ns, struct bio *bp,
|
|
nvme_cb_fn_t cb_fn)
|
|
{
|
|
struct nvme_dsm_range *dsm_range;
|
|
uint32_t num_bios;
|
|
int err;
|
|
|
|
bp->bio_driver1 = cb_fn;
|
|
|
|
if (ns->boundary > 0 &&
|
|
(bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE)) {
|
|
num_bios = nvme_get_num_segments(bp->bio_offset,
|
|
bp->bio_bcount, ns->boundary);
|
|
if (num_bios > 1)
|
|
return (nvme_ns_split_bio(ns, bp, ns->boundary));
|
|
}
|
|
|
|
switch (bp->bio_cmd) {
|
|
case BIO_READ:
|
|
err = nvme_ns_cmd_read_bio(ns, bp, nvme_ns_bio_done, bp);
|
|
break;
|
|
case BIO_WRITE:
|
|
err = nvme_ns_cmd_write_bio(ns, bp, nvme_ns_bio_done, bp);
|
|
break;
|
|
case BIO_FLUSH:
|
|
err = nvme_ns_cmd_flush(ns, nvme_ns_bio_done, bp);
|
|
break;
|
|
case BIO_DELETE:
|
|
dsm_range =
|
|
malloc(sizeof(struct nvme_dsm_range), M_NVME,
|
|
M_ZERO | M_NOWAIT);
|
|
if (!dsm_range) {
|
|
err = ENOMEM;
|
|
break;
|
|
}
|
|
dsm_range->length =
|
|
htole32(bp->bio_bcount/nvme_ns_get_sector_size(ns));
|
|
dsm_range->starting_lba =
|
|
htole64(bp->bio_offset/nvme_ns_get_sector_size(ns));
|
|
bp->bio_driver2 = dsm_range;
|
|
err = nvme_ns_cmd_deallocate(ns, dsm_range, 1,
|
|
nvme_ns_bio_done, bp);
|
|
if (err != 0)
|
|
free(dsm_range, M_NVME);
|
|
break;
|
|
default:
|
|
err = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
int
|
|
nvme_ns_ioctl_process(struct nvme_namespace *ns, u_long cmd, caddr_t arg,
|
|
int flag, struct thread *td)
|
|
{
|
|
return (nvme_ns_ioctl(ns->cdev, cmd, arg, flag, td));
|
|
}
|
|
|
|
int
|
|
nvme_ns_construct(struct nvme_namespace *ns, uint32_t id,
|
|
struct nvme_controller *ctrlr)
|
|
{
|
|
struct make_dev_args md_args;
|
|
struct nvme_completion_poll_status status;
|
|
int res;
|
|
int unit;
|
|
uint8_t flbas_fmt;
|
|
uint8_t vwc_present;
|
|
|
|
ns->ctrlr = ctrlr;
|
|
ns->id = id;
|
|
|
|
/*
|
|
* Namespaces are reconstructed after a controller reset, so check
|
|
* to make sure we only call mtx_init once on each mtx.
|
|
*
|
|
* TODO: Move this somewhere where it gets called at controller
|
|
* construction time, which is not invoked as part of each
|
|
* controller reset.
|
|
*/
|
|
if (!mtx_initialized(&ns->lock))
|
|
mtx_init(&ns->lock, "nvme ns lock", NULL, MTX_DEF);
|
|
|
|
status.done = 0;
|
|
nvme_ctrlr_cmd_identify_namespace(ctrlr, id, &ns->data,
|
|
nvme_completion_poll_cb, &status);
|
|
nvme_completion_poll(&status);
|
|
if (nvme_completion_is_error(&status.cpl)) {
|
|
nvme_printf(ctrlr, "nvme_identify_namespace failed\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Convert data to host endian */
|
|
nvme_namespace_data_swapbytes(&ns->data);
|
|
|
|
/*
|
|
* If the size of is zero, chances are this isn't a valid
|
|
* namespace (eg one that's not been configured yet). The
|
|
* standard says the entire id will be zeros, so this is a
|
|
* cheap way to test for that.
|
|
*/
|
|
if (ns->data.nsze == 0)
|
|
return (ENXIO);
|
|
|
|
flbas_fmt = (ns->data.flbas >> NVME_NS_DATA_FLBAS_FORMAT_SHIFT) &
|
|
NVME_NS_DATA_FLBAS_FORMAT_MASK;
|
|
/*
|
|
* Note: format is a 0-based value, so > is appropriate here,
|
|
* not >=.
|
|
*/
|
|
if (flbas_fmt > ns->data.nlbaf) {
|
|
nvme_printf(ctrlr,
|
|
"lba format %d exceeds number supported (%d)\n",
|
|
flbas_fmt, ns->data.nlbaf + 1);
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* Older Intel devices (like the PC35xxx and P45xx series) advertise in
|
|
* vendor specific space an alignment that improves performance. If
|
|
* present use for the stripe size. NVMe 1.3 standardized this as
|
|
* NOIOB, and newer Intel drives use that.
|
|
*/
|
|
if ((ctrlr->quirks & QUIRK_INTEL_ALIGNMENT) != 0) {
|
|
if (ctrlr->cdata.vs[3] != 0)
|
|
ns->boundary =
|
|
1 << (ctrlr->cdata.vs[3] + NVME_MPS_SHIFT +
|
|
NVME_CAP_HI_MPSMIN(ctrlr->cap_hi));
|
|
else
|
|
ns->boundary = 0;
|
|
} else {
|
|
ns->boundary = ns->data.noiob * nvme_ns_get_sector_size(ns);
|
|
}
|
|
|
|
if (nvme_ctrlr_has_dataset_mgmt(&ctrlr->cdata))
|
|
ns->flags |= NVME_NS_DEALLOCATE_SUPPORTED;
|
|
|
|
vwc_present = (ctrlr->cdata.vwc >> NVME_CTRLR_DATA_VWC_PRESENT_SHIFT) &
|
|
NVME_CTRLR_DATA_VWC_PRESENT_MASK;
|
|
if (vwc_present)
|
|
ns->flags |= NVME_NS_FLUSH_SUPPORTED;
|
|
|
|
/*
|
|
* cdev may have already been created, if we are reconstructing the
|
|
* namespace after a controller-level reset.
|
|
*/
|
|
if (ns->cdev != NULL)
|
|
return (0);
|
|
|
|
/*
|
|
* Namespace IDs start at 1, so we need to subtract 1 to create a
|
|
* correct unit number.
|
|
*/
|
|
unit = device_get_unit(ctrlr->dev) * NVME_MAX_NAMESPACES + ns->id - 1;
|
|
|
|
make_dev_args_init(&md_args);
|
|
md_args.mda_devsw = &nvme_ns_cdevsw;
|
|
md_args.mda_unit = unit;
|
|
md_args.mda_mode = 0600;
|
|
md_args.mda_si_drv1 = ns;
|
|
res = make_dev_s(&md_args, &ns->cdev, "nvme%dns%d",
|
|
device_get_unit(ctrlr->dev), ns->id);
|
|
if (res != 0)
|
|
return (ENXIO);
|
|
|
|
ns->cdev->si_flags |= SI_UNMAPPED;
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
nvme_ns_destruct(struct nvme_namespace *ns)
|
|
{
|
|
|
|
if (ns->cdev != NULL)
|
|
destroy_dev(ns->cdev);
|
|
}
|