mirror of https://gitee.com/openkylin/linux.git
Merge git://git.infradead.org/users/willy/linux-nvme
Pull NVMe update from Matthew Wilcox: "Mostly bugfixes again for the NVMe driver. I'd like to call out the exported tracepoint in the block layer; I believe Keith has cleared this with Jens. We've had a few reports from people who're really pounding on NVMe devices at scale, hence the timeout changes (and new module parameters), hotplug cpu deadlock, tracepoints, and minor performance tweaks" [ Jens hadn't seen that tracepoint thing, but is ok with it - it will end up going away when mq conversion happens ] * git://git.infradead.org/users/willy/linux-nvme: (22 commits) NVMe: Fix START_STOP_UNIT Scsi->NVMe translation. NVMe: Use Log Page constants in SCSI emulation NVMe: Define Log Page constants NVMe: Fix hot cpu notification dead lock NVMe: Rename io_timeout to nvme_io_timeout NVMe: Use last bytes of f/w rev SCSI Inquiry NVMe: Adhere to request queue block accounting enable/disable NVMe: Fix nvme get/put queue semantics NVMe: Delete NVME_GET_FEAT_TEMP_THRESH NVMe: Make admin timeout a module parameter NVMe: Make iod bio timeout a parameter NVMe: Prevent possible NULL pointer dereference NVMe: Fix the buffer size passed in GetLogPage(CDW10.NUMD) NVMe: Update data structures for NVMe 1.2 NVMe: Enable BUILD_BUG_ON checks NVMe: Update namespace and controller identify structures to the 1.1a spec NVMe: Flush with data support NVMe: Configure support for block flush NVMe: Add tracepoints NVMe: Protect against badly formatted CQEs ...
This commit is contained in:
Linus Torvalds
commit
b55b390202
|
|
@ -43,6 +43,7 @@
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|||
EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_remap);
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EXPORT_TRACEPOINT_SYMBOL_GPL(block_rq_remap);
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EXPORT_TRACEPOINT_SYMBOL_GPL(block_bio_complete);
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EXPORT_TRACEPOINT_SYMBOL_GPL(block_split);
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EXPORT_TRACEPOINT_SYMBOL_GPL(block_unplug);
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DEFINE_IDA(blk_queue_ida);
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|
|
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|||
|
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@ -10,10 +10,6 @@
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|||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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||||
#include <linux/nvme.h>
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|
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@ -46,16 +42,26 @@
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#include <scsi/sg.h>
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#include <asm-generic/io-64-nonatomic-lo-hi.h>
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#define NVME_Q_DEPTH 1024
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#include <trace/events/block.h>
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#define NVME_Q_DEPTH 1024
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#define SQ_SIZE(depth) (depth * sizeof(struct nvme_command))
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#define CQ_SIZE(depth) (depth * sizeof(struct nvme_completion))
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#define ADMIN_TIMEOUT (60 * HZ)
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#define IOD_TIMEOUT (4 * NVME_IO_TIMEOUT)
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#define ADMIN_TIMEOUT (admin_timeout * HZ)
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#define IOD_TIMEOUT (retry_time * HZ)
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unsigned char io_timeout = 30;
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module_param(io_timeout, byte, 0644);
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static unsigned char admin_timeout = 60;
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module_param(admin_timeout, byte, 0644);
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MODULE_PARM_DESC(admin_timeout, "timeout in seconds for admin commands");
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unsigned char nvme_io_timeout = 30;
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module_param_named(io_timeout, nvme_io_timeout, byte, 0644);
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MODULE_PARM_DESC(io_timeout, "timeout in seconds for I/O");
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static unsigned char retry_time = 30;
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module_param(retry_time, byte, 0644);
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MODULE_PARM_DESC(retry_time, "time in seconds to retry failed I/O");
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static int nvme_major;
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module_param(nvme_major, int, 0);
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|
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@ -67,6 +73,7 @@ static LIST_HEAD(dev_list);
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static struct task_struct *nvme_thread;
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static struct workqueue_struct *nvme_workq;
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static wait_queue_head_t nvme_kthread_wait;
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static struct notifier_block nvme_nb;
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static void nvme_reset_failed_dev(struct work_struct *ws);
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|
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@ -199,16 +206,13 @@ static int alloc_cmdid_killable(struct nvme_queue *nvmeq, void *ctx,
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#define CMD_CTX_CANCELLED (0x30C + CMD_CTX_BASE)
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#define CMD_CTX_COMPLETED (0x310 + CMD_CTX_BASE)
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#define CMD_CTX_INVALID (0x314 + CMD_CTX_BASE)
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#define CMD_CTX_FLUSH (0x318 + CMD_CTX_BASE)
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#define CMD_CTX_ABORT (0x31C + CMD_CTX_BASE)
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#define CMD_CTX_ABORT (0x318 + CMD_CTX_BASE)
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|
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static void special_completion(struct nvme_queue *nvmeq, void *ctx,
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struct nvme_completion *cqe)
|
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{
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if (ctx == CMD_CTX_CANCELLED)
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return;
|
||||
if (ctx == CMD_CTX_FLUSH)
|
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return;
|
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if (ctx == CMD_CTX_ABORT) {
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++nvmeq->dev->abort_limit;
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return;
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|
|
@ -247,8 +251,9 @@ static void *free_cmdid(struct nvme_queue *nvmeq, int cmdid,
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|||
void *ctx;
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struct nvme_cmd_info *info = nvme_cmd_info(nvmeq);
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|
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if (cmdid >= nvmeq->q_depth) {
|
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*fn = special_completion;
|
||||
if (cmdid >= nvmeq->q_depth || !info[cmdid].fn) {
|
||||
if (fn)
|
||||
*fn = special_completion;
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return CMD_CTX_INVALID;
|
||||
}
|
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if (fn)
|
||||
|
|
@ -281,9 +286,17 @@ static struct nvme_queue *raw_nvmeq(struct nvme_dev *dev, int qid)
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|||
|
||||
static struct nvme_queue *get_nvmeq(struct nvme_dev *dev) __acquires(RCU)
|
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{
|
||||
struct nvme_queue *nvmeq;
|
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unsigned queue_id = get_cpu_var(*dev->io_queue);
|
||||
|
||||
rcu_read_lock();
|
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return rcu_dereference(dev->queues[queue_id]);
|
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nvmeq = rcu_dereference(dev->queues[queue_id]);
|
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if (nvmeq)
|
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return nvmeq;
|
||||
|
||||
rcu_read_unlock();
|
||||
put_cpu_var(*dev->io_queue);
|
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return NULL;
|
||||
}
|
||||
|
||||
static void put_nvmeq(struct nvme_queue *nvmeq) __releases(RCU)
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|
|
@ -295,8 +308,15 @@ static void put_nvmeq(struct nvme_queue *nvmeq) __releases(RCU)
|
|||
static struct nvme_queue *lock_nvmeq(struct nvme_dev *dev, int q_idx)
|
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__acquires(RCU)
|
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{
|
||||
struct nvme_queue *nvmeq;
|
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|
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rcu_read_lock();
|
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return rcu_dereference(dev->queues[q_idx]);
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nvmeq = rcu_dereference(dev->queues[q_idx]);
|
||||
if (nvmeq)
|
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return nvmeq;
|
||||
|
||||
rcu_read_unlock();
|
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return NULL;
|
||||
}
|
||||
|
||||
static void unlock_nvmeq(struct nvme_queue *nvmeq) __releases(RCU)
|
||||
|
|
@ -387,25 +407,30 @@ void nvme_free_iod(struct nvme_dev *dev, struct nvme_iod *iod)
|
|||
static void nvme_start_io_acct(struct bio *bio)
|
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{
|
||||
struct gendisk *disk = bio->bi_bdev->bd_disk;
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const int rw = bio_data_dir(bio);
|
||||
int cpu = part_stat_lock();
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part_round_stats(cpu, &disk->part0);
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part_stat_inc(cpu, &disk->part0, ios[rw]);
|
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part_stat_add(cpu, &disk->part0, sectors[rw], bio_sectors(bio));
|
||||
part_inc_in_flight(&disk->part0, rw);
|
||||
part_stat_unlock();
|
||||
if (blk_queue_io_stat(disk->queue)) {
|
||||
const int rw = bio_data_dir(bio);
|
||||
int cpu = part_stat_lock();
|
||||
part_round_stats(cpu, &disk->part0);
|
||||
part_stat_inc(cpu, &disk->part0, ios[rw]);
|
||||
part_stat_add(cpu, &disk->part0, sectors[rw],
|
||||
bio_sectors(bio));
|
||||
part_inc_in_flight(&disk->part0, rw);
|
||||
part_stat_unlock();
|
||||
}
|
||||
}
|
||||
|
||||
static void nvme_end_io_acct(struct bio *bio, unsigned long start_time)
|
||||
{
|
||||
struct gendisk *disk = bio->bi_bdev->bd_disk;
|
||||
const int rw = bio_data_dir(bio);
|
||||
unsigned long duration = jiffies - start_time;
|
||||
int cpu = part_stat_lock();
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||||
part_stat_add(cpu, &disk->part0, ticks[rw], duration);
|
||||
part_round_stats(cpu, &disk->part0);
|
||||
part_dec_in_flight(&disk->part0, rw);
|
||||
part_stat_unlock();
|
||||
if (blk_queue_io_stat(disk->queue)) {
|
||||
const int rw = bio_data_dir(bio);
|
||||
unsigned long duration = jiffies - start_time;
|
||||
int cpu = part_stat_lock();
|
||||
part_stat_add(cpu, &disk->part0, ticks[rw], duration);
|
||||
part_round_stats(cpu, &disk->part0);
|
||||
part_dec_in_flight(&disk->part0, rw);
|
||||
part_stat_unlock();
|
||||
}
|
||||
}
|
||||
|
||||
static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
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||||
|
|
@ -414,6 +439,7 @@ static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
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|||
struct nvme_iod *iod = ctx;
|
||||
struct bio *bio = iod->private;
|
||||
u16 status = le16_to_cpup(&cqe->status) >> 1;
|
||||
int error = 0;
|
||||
|
||||
if (unlikely(status)) {
|
||||
if (!(status & NVME_SC_DNR ||
|
||||
|
|
@ -426,6 +452,7 @@ static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
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|||
wake_up(&nvmeq->sq_full);
|
||||
return;
|
||||
}
|
||||
error = -EIO;
|
||||
}
|
||||
if (iod->nents) {
|
||||
dma_unmap_sg(nvmeq->q_dmadev, iod->sg, iod->nents,
|
||||
|
|
@ -433,10 +460,9 @@ static void bio_completion(struct nvme_queue *nvmeq, void *ctx,
|
|||
nvme_end_io_acct(bio, iod->start_time);
|
||||
}
|
||||
nvme_free_iod(nvmeq->dev, iod);
|
||||
if (status)
|
||||
bio_endio(bio, -EIO);
|
||||
else
|
||||
bio_endio(bio, 0);
|
||||
|
||||
trace_block_bio_complete(bdev_get_queue(bio->bi_bdev), bio, error);
|
||||
bio_endio(bio, error);
|
||||
}
|
||||
|
||||
/* length is in bytes. gfp flags indicates whether we may sleep. */
|
||||
|
|
@ -525,6 +551,8 @@ static int nvme_split_and_submit(struct bio *bio, struct nvme_queue *nvmeq,
|
|||
if (!split)
|
||||
return -ENOMEM;
|
||||
|
||||
trace_block_split(bdev_get_queue(bio->bi_bdev), bio,
|
||||
split->bi_iter.bi_sector);
|
||||
bio_chain(split, bio);
|
||||
|
||||
if (!waitqueue_active(&nvmeq->sq_full))
|
||||
|
|
@ -627,16 +655,6 @@ static int nvme_submit_flush(struct nvme_queue *nvmeq, struct nvme_ns *ns,
|
|||
return 0;
|
||||
}
|
||||
|
||||
int nvme_submit_flush_data(struct nvme_queue *nvmeq, struct nvme_ns *ns)
|
||||
{
|
||||
int cmdid = alloc_cmdid(nvmeq, (void *)CMD_CTX_FLUSH,
|
||||
special_completion, NVME_IO_TIMEOUT);
|
||||
if (unlikely(cmdid < 0))
|
||||
return cmdid;
|
||||
|
||||
return nvme_submit_flush(nvmeq, ns, cmdid);
|
||||
}
|
||||
|
||||
static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod)
|
||||
{
|
||||
struct bio *bio = iod->private;
|
||||
|
|
@ -652,7 +670,7 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod)
|
|||
|
||||
if (bio->bi_rw & REQ_DISCARD)
|
||||
return nvme_submit_discard(nvmeq, ns, bio, iod, cmdid);
|
||||
if ((bio->bi_rw & REQ_FLUSH) && !iod->nents)
|
||||
if (bio->bi_rw & REQ_FLUSH)
|
||||
return nvme_submit_flush(nvmeq, ns, cmdid);
|
||||
|
||||
control = 0;
|
||||
|
|
@ -686,6 +704,26 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int nvme_split_flush_data(struct nvme_queue *nvmeq, struct bio *bio)
|
||||
{
|
||||
struct bio *split = bio_clone(bio, GFP_ATOMIC);
|
||||
if (!split)
|
||||
return -ENOMEM;
|
||||
|
||||
split->bi_iter.bi_size = 0;
|
||||
split->bi_phys_segments = 0;
|
||||
bio->bi_rw &= ~REQ_FLUSH;
|
||||
bio_chain(split, bio);
|
||||
|
||||
if (!waitqueue_active(&nvmeq->sq_full))
|
||||
add_wait_queue(&nvmeq->sq_full, &nvmeq->sq_cong_wait);
|
||||
bio_list_add(&nvmeq->sq_cong, split);
|
||||
bio_list_add(&nvmeq->sq_cong, bio);
|
||||
wake_up_process(nvme_thread);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Called with local interrupts disabled and the q_lock held. May not sleep.
|
||||
*/
|
||||
|
|
@ -696,11 +734,8 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
|
|||
int psegs = bio_phys_segments(ns->queue, bio);
|
||||
int result;
|
||||
|
||||
if ((bio->bi_rw & REQ_FLUSH) && psegs) {
|
||||
result = nvme_submit_flush_data(nvmeq, ns);
|
||||
if (result)
|
||||
return result;
|
||||
}
|
||||
if ((bio->bi_rw & REQ_FLUSH) && psegs)
|
||||
return nvme_split_flush_data(nvmeq, bio);
|
||||
|
||||
iod = nvme_alloc_iod(psegs, bio->bi_iter.bi_size, GFP_ATOMIC);
|
||||
if (!iod)
|
||||
|
|
@ -795,7 +830,6 @@ static void nvme_make_request(struct request_queue *q, struct bio *bio)
|
|||
int result = -EBUSY;
|
||||
|
||||
if (!nvmeq) {
|
||||
put_nvmeq(NULL);
|
||||
bio_endio(bio, -EIO);
|
||||
return;
|
||||
}
|
||||
|
|
@ -870,10 +904,8 @@ static int nvme_submit_sync_cmd(struct nvme_dev *dev, int q_idx,
|
|||
struct nvme_queue *nvmeq;
|
||||
|
||||
nvmeq = lock_nvmeq(dev, q_idx);
|
||||
if (!nvmeq) {
|
||||
unlock_nvmeq(nvmeq);
|
||||
if (!nvmeq)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
cmdinfo.task = current;
|
||||
cmdinfo.status = -EINTR;
|
||||
|
|
@ -898,9 +930,10 @@ static int nvme_submit_sync_cmd(struct nvme_dev *dev, int q_idx,
|
|||
|
||||
if (cmdinfo.status == -EINTR) {
|
||||
nvmeq = lock_nvmeq(dev, q_idx);
|
||||
if (nvmeq)
|
||||
if (nvmeq) {
|
||||
nvme_abort_command(nvmeq, cmdid);
|
||||
unlock_nvmeq(nvmeq);
|
||||
unlock_nvmeq(nvmeq);
|
||||
}
|
||||
return -EINTR;
|
||||
}
|
||||
|
||||
|
|
@ -1358,7 +1391,8 @@ static int nvme_wait_ready(struct nvme_dev *dev, u64 cap, bool enabled)
|
|||
return -EINTR;
|
||||
if (time_after(jiffies, timeout)) {
|
||||
dev_err(&dev->pci_dev->dev,
|
||||
"Device not ready; aborting initialisation\n");
|
||||
"Device not ready; aborting %s\n", enabled ?
|
||||
"initialisation" : "reset");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
|
@ -1481,7 +1515,11 @@ struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
|
|||
goto put_pages;
|
||||
}
|
||||
|
||||
err = -ENOMEM;
|
||||
iod = nvme_alloc_iod(count, length, GFP_KERNEL);
|
||||
if (!iod)
|
||||
goto put_pages;
|
||||
|
||||
sg = iod->sg;
|
||||
sg_init_table(sg, count);
|
||||
for (i = 0; i < count; i++) {
|
||||
|
|
@ -1494,7 +1532,6 @@ struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
|
|||
sg_mark_end(&sg[i - 1]);
|
||||
iod->nents = count;
|
||||
|
||||
err = -ENOMEM;
|
||||
nents = dma_map_sg(&dev->pci_dev->dev, sg, count,
|
||||
write ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
|
||||
if (!nents)
|
||||
|
|
@ -1894,6 +1931,8 @@ static struct nvme_ns *nvme_alloc_ns(struct nvme_dev *dev, unsigned nsid,
|
|||
blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
|
||||
if (dev->max_hw_sectors)
|
||||
blk_queue_max_hw_sectors(ns->queue, dev->max_hw_sectors);
|
||||
if (dev->vwc & NVME_CTRL_VWC_PRESENT)
|
||||
blk_queue_flush(ns->queue, REQ_FLUSH | REQ_FUA);
|
||||
|
||||
disk->major = nvme_major;
|
||||
disk->first_minor = 0;
|
||||
|
|
@ -2062,8 +2101,13 @@ static int set_queue_count(struct nvme_dev *dev, int count)
|
|||
|
||||
status = nvme_set_features(dev, NVME_FEAT_NUM_QUEUES, q_count, 0,
|
||||
&result);
|
||||
if (status)
|
||||
return status < 0 ? -EIO : -EBUSY;
|
||||
if (status < 0)
|
||||
return status;
|
||||
if (status > 0) {
|
||||
dev_err(&dev->pci_dev->dev, "Could not set queue count (%d)\n",
|
||||
status);
|
||||
return -EBUSY;
|
||||
}
|
||||
return min(result & 0xffff, result >> 16) + 1;
|
||||
}
|
||||
|
||||
|
|
@ -2072,14 +2116,25 @@ static size_t db_bar_size(struct nvme_dev *dev, unsigned nr_io_queues)
|
|||
return 4096 + ((nr_io_queues + 1) * 8 * dev->db_stride);
|
||||
}
|
||||
|
||||
static void nvme_cpu_workfn(struct work_struct *work)
|
||||
{
|
||||
struct nvme_dev *dev = container_of(work, struct nvme_dev, cpu_work);
|
||||
if (dev->initialized)
|
||||
nvme_assign_io_queues(dev);
|
||||
}
|
||||
|
||||
static int nvme_cpu_notify(struct notifier_block *self,
|
||||
unsigned long action, void *hcpu)
|
||||
{
|
||||
struct nvme_dev *dev = container_of(self, struct nvme_dev, nb);
|
||||
struct nvme_dev *dev;
|
||||
|
||||
switch (action) {
|
||||
case CPU_ONLINE:
|
||||
case CPU_DEAD:
|
||||
nvme_assign_io_queues(dev);
|
||||
spin_lock(&dev_list_lock);
|
||||
list_for_each_entry(dev, &dev_list, node)
|
||||
schedule_work(&dev->cpu_work);
|
||||
spin_unlock(&dev_list_lock);
|
||||
break;
|
||||
}
|
||||
return NOTIFY_OK;
|
||||
|
|
@ -2148,11 +2203,6 @@ static int nvme_setup_io_queues(struct nvme_dev *dev)
|
|||
nvme_free_queues(dev, nr_io_queues + 1);
|
||||
nvme_assign_io_queues(dev);
|
||||
|
||||
dev->nb.notifier_call = &nvme_cpu_notify;
|
||||
result = register_hotcpu_notifier(&dev->nb);
|
||||
if (result)
|
||||
goto free_queues;
|
||||
|
||||
return 0;
|
||||
|
||||
free_queues:
|
||||
|
|
@ -2184,6 +2234,7 @@ static int nvme_dev_add(struct nvme_dev *dev)
|
|||
|
||||
res = nvme_identify(dev, 0, 1, dma_addr);
|
||||
if (res) {
|
||||
dev_err(&pdev->dev, "Identify Controller failed (%d)\n", res);
|
||||
res = -EIO;
|
||||
goto out;
|
||||
}
|
||||
|
|
@ -2192,6 +2243,7 @@ static int nvme_dev_add(struct nvme_dev *dev)
|
|||
nn = le32_to_cpup(&ctrl->nn);
|
||||
dev->oncs = le16_to_cpup(&ctrl->oncs);
|
||||
dev->abort_limit = ctrl->acl + 1;
|
||||
dev->vwc = ctrl->vwc;
|
||||
memcpy(dev->serial, ctrl->sn, sizeof(ctrl->sn));
|
||||
memcpy(dev->model, ctrl->mn, sizeof(ctrl->mn));
|
||||
memcpy(dev->firmware_rev, ctrl->fr, sizeof(ctrl->fr));
|
||||
|
|
@ -2450,8 +2502,6 @@ static void nvme_dev_shutdown(struct nvme_dev *dev)
|
|||
int i;
|
||||
|
||||
dev->initialized = 0;
|
||||
unregister_hotcpu_notifier(&dev->nb);
|
||||
|
||||
nvme_dev_list_remove(dev);
|
||||
|
||||
if (!dev->bar || (dev->bar && readl(&dev->bar->csts) == -1)) {
|
||||
|
|
@ -2722,6 +2772,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
|||
INIT_LIST_HEAD(&dev->namespaces);
|
||||
dev->reset_workfn = nvme_reset_failed_dev;
|
||||
INIT_WORK(&dev->reset_work, nvme_reset_workfn);
|
||||
INIT_WORK(&dev->cpu_work, nvme_cpu_workfn);
|
||||
dev->pci_dev = pdev;
|
||||
pci_set_drvdata(pdev, dev);
|
||||
result = nvme_set_instance(dev);
|
||||
|
|
@ -2801,6 +2852,7 @@ static void nvme_remove(struct pci_dev *pdev)
|
|||
|
||||
pci_set_drvdata(pdev, NULL);
|
||||
flush_work(&dev->reset_work);
|
||||
flush_work(&dev->cpu_work);
|
||||
misc_deregister(&dev->miscdev);
|
||||
nvme_dev_remove(dev);
|
||||
nvme_dev_shutdown(dev);
|
||||
|
|
@ -2889,11 +2941,18 @@ static int __init nvme_init(void)
|
|||
else if (result > 0)
|
||||
nvme_major = result;
|
||||
|
||||
result = pci_register_driver(&nvme_driver);
|
||||
nvme_nb.notifier_call = &nvme_cpu_notify;
|
||||
result = register_hotcpu_notifier(&nvme_nb);
|
||||
if (result)
|
||||
goto unregister_blkdev;
|
||||
|
||||
result = pci_register_driver(&nvme_driver);
|
||||
if (result)
|
||||
goto unregister_hotcpu;
|
||||
return 0;
|
||||
|
||||
unregister_hotcpu:
|
||||
unregister_hotcpu_notifier(&nvme_nb);
|
||||
unregister_blkdev:
|
||||
unregister_blkdev(nvme_major, "nvme");
|
||||
kill_workq:
|
||||
|
|
@ -2904,9 +2963,11 @@ static int __init nvme_init(void)
|
|||
static void __exit nvme_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&nvme_driver);
|
||||
unregister_hotcpu_notifier(&nvme_nb);
|
||||
unregister_blkdev(nvme_major, "nvme");
|
||||
destroy_workqueue(nvme_workq);
|
||||
BUG_ON(nvme_thread && !IS_ERR(nvme_thread));
|
||||
_nvme_check_size();
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Matthew Wilcox <willy@linux.intel.com>");
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/*
|
||||
* NVM Express device driver
|
||||
* Copyright (c) 2011, Intel Corporation.
|
||||
* Copyright (c) 2011-2014, Intel Corporation.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
|
|
@ -10,10 +10,6 @@
|
|||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
/*
|
||||
|
|
@ -243,8 +239,6 @@ static int sg_version_num = 30534; /* 2 digits for each component */
|
|||
#define READ_CAP_16_RESP_SIZE 32
|
||||
|
||||
/* NVMe Namespace and Command Defines */
|
||||
#define NVME_GET_SMART_LOG_PAGE 0x02
|
||||
#define NVME_GET_FEAT_TEMP_THRESH 0x04
|
||||
#define BYTES_TO_DWORDS 4
|
||||
#define NVME_MAX_FIRMWARE_SLOT 7
|
||||
|
||||
|
|
@ -686,6 +680,7 @@ static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns,
|
|||
u8 resp_data_format = 0x02;
|
||||
u8 protect;
|
||||
u8 cmdque = 0x01 << 1;
|
||||
u8 fw_offset = sizeof(dev->firmware_rev);
|
||||
|
||||
mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
|
||||
&dma_addr, GFP_KERNEL);
|
||||
|
|
@ -721,7 +716,11 @@ static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns,
|
|||
inq_response[7] = cmdque; /* wbus16=0 | sync=0 | vs=0 */
|
||||
strncpy(&inq_response[8], "NVMe ", 8);
|
||||
strncpy(&inq_response[16], dev->model, 16);
|
||||
strncpy(&inq_response[32], dev->firmware_rev, 4);
|
||||
|
||||
while (dev->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4)
|
||||
fw_offset--;
|
||||
fw_offset -= 4;
|
||||
strncpy(&inq_response[32], dev->firmware_rev + fw_offset, 4);
|
||||
|
||||
xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
|
||||
res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
|
||||
|
|
@ -1018,8 +1017,8 @@ static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
|
|||
c.common.opcode = nvme_admin_get_log_page;
|
||||
c.common.nsid = cpu_to_le32(0xFFFFFFFF);
|
||||
c.common.prp1 = cpu_to_le64(dma_addr);
|
||||
c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) /
|
||||
BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE);
|
||||
c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
|
||||
BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
|
||||
res = nvme_submit_admin_cmd(dev, &c, NULL);
|
||||
if (res != NVME_SC_SUCCESS) {
|
||||
temp_c = LOG_TEMP_UNKNOWN;
|
||||
|
|
@ -1086,8 +1085,8 @@ static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|||
c.common.opcode = nvme_admin_get_log_page;
|
||||
c.common.nsid = cpu_to_le32(0xFFFFFFFF);
|
||||
c.common.prp1 = cpu_to_le64(dma_addr);
|
||||
c.common.cdw10[0] = cpu_to_le32(((sizeof(struct nvme_smart_log) /
|
||||
BYTES_TO_DWORDS) << 16) | NVME_GET_SMART_LOG_PAGE);
|
||||
c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
|
||||
BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
|
||||
res = nvme_submit_admin_cmd(dev, &c, NULL);
|
||||
if (res != NVME_SC_SUCCESS) {
|
||||
temp_c_cur = LOG_TEMP_UNKNOWN;
|
||||
|
|
@ -1477,7 +1476,7 @@ static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|||
goto out_dma;
|
||||
}
|
||||
id_ctrl = mem;
|
||||
lowest_pow_st = id_ctrl->npss - 1;
|
||||
lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
|
||||
|
||||
switch (pc) {
|
||||
case NVME_POWER_STATE_START_VALID:
|
||||
|
|
@ -1494,20 +1493,19 @@ static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
|
|||
break;
|
||||
case NVME_POWER_STATE_IDLE:
|
||||
/* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */
|
||||
/* min of desired state and (lps-1) because lps is STOP */
|
||||
if (pcmod == 0x0)
|
||||
ps_desired = min(POWER_STATE_1, (lowest_pow_st - 1));
|
||||
ps_desired = POWER_STATE_1;
|
||||
else if (pcmod == 0x1)
|
||||
ps_desired = min(POWER_STATE_2, (lowest_pow_st - 1));
|
||||
ps_desired = POWER_STATE_2;
|
||||
else if (pcmod == 0x2)
|
||||
ps_desired = min(POWER_STATE_3, (lowest_pow_st - 1));
|
||||
ps_desired = POWER_STATE_3;
|
||||
break;
|
||||
case NVME_POWER_STATE_STANDBY:
|
||||
/* Action unspecified if POWER CONDITION MODIFIER != [0,1] */
|
||||
if (pcmod == 0x0)
|
||||
ps_desired = max(0, (lowest_pow_st - 2));
|
||||
ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2));
|
||||
else if (pcmod == 0x1)
|
||||
ps_desired = max(0, (lowest_pow_st - 1));
|
||||
ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1));
|
||||
break;
|
||||
case NVME_POWER_STATE_LU_CONTROL:
|
||||
default:
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/*
|
||||
* Definitions for the NVM Express interface
|
||||
* Copyright (c) 2011-2013, Intel Corporation.
|
||||
* Copyright (c) 2011-2014, Intel Corporation.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
|
|
@ -10,10 +10,6 @@
|
|||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#ifndef _LINUX_NVME_H
|
||||
|
|
@ -66,8 +62,8 @@ enum {
|
|||
|
||||
#define NVME_VS(major, minor) (major << 16 | minor)
|
||||
|
||||
extern unsigned char io_timeout;
|
||||
#define NVME_IO_TIMEOUT (io_timeout * HZ)
|
||||
extern unsigned char nvme_io_timeout;
|
||||
#define NVME_IO_TIMEOUT (nvme_io_timeout * HZ)
|
||||
|
||||
/*
|
||||
* Represents an NVM Express device. Each nvme_dev is a PCI function.
|
||||
|
|
@ -94,7 +90,7 @@ struct nvme_dev {
|
|||
struct miscdevice miscdev;
|
||||
work_func_t reset_workfn;
|
||||
struct work_struct reset_work;
|
||||
struct notifier_block nb;
|
||||
struct work_struct cpu_work;
|
||||
char name[12];
|
||||
char serial[20];
|
||||
char model[40];
|
||||
|
|
@ -103,6 +99,7 @@ struct nvme_dev {
|
|||
u32 stripe_size;
|
||||
u16 oncs;
|
||||
u16 abort_limit;
|
||||
u8 vwc;
|
||||
u8 initialized;
|
||||
};
|
||||
|
||||
|
|
@ -159,7 +156,6 @@ struct nvme_iod *nvme_map_user_pages(struct nvme_dev *dev, int write,
|
|||
void nvme_unmap_user_pages(struct nvme_dev *dev, int write,
|
||||
struct nvme_iod *iod);
|
||||
int nvme_submit_io_cmd(struct nvme_dev *, struct nvme_command *, u32 *);
|
||||
int nvme_submit_flush_data(struct nvme_queue *nvmeq, struct nvme_ns *ns);
|
||||
int nvme_submit_admin_cmd(struct nvme_dev *, struct nvme_command *,
|
||||
u32 *result);
|
||||
int nvme_identify(struct nvme_dev *, unsigned nsid, unsigned cns,
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/*
|
||||
* Definitions for the NVM Express interface
|
||||
* Copyright (c) 2011-2013, Intel Corporation.
|
||||
* Copyright (c) 2011-2014, Intel Corporation.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms and conditions of the GNU General Public License,
|
||||
|
|
@ -10,10 +10,6 @@
|
|||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
* more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License along with
|
||||
* this program; if not, write to the Free Software Foundation, Inc.,
|
||||
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*/
|
||||
|
||||
#ifndef _UAPI_LINUX_NVME_H
|
||||
|
|
@ -31,7 +27,12 @@ struct nvme_id_power_state {
|
|||
__u8 read_lat;
|
||||
__u8 write_tput;
|
||||
__u8 write_lat;
|
||||
__u8 rsvd16[16];
|
||||
__le16 idle_power;
|
||||
__u8 idle_scale;
|
||||
__u8 rsvd19;
|
||||
__le16 active_power;
|
||||
__u8 active_work_scale;
|
||||
__u8 rsvd23[9];
|
||||
};
|
||||
|
||||
enum {
|
||||
|
|
@ -49,7 +50,9 @@ struct nvme_id_ctrl {
|
|||
__u8 ieee[3];
|
||||
__u8 mic;
|
||||
__u8 mdts;
|
||||
__u8 rsvd78[178];
|
||||
__u16 cntlid;
|
||||
__u32 ver;
|
||||
__u8 rsvd84[172];
|
||||
__le16 oacs;
|
||||
__u8 acl;
|
||||
__u8 aerl;
|
||||
|
|
@ -57,7 +60,11 @@ struct nvme_id_ctrl {
|
|||
__u8 lpa;
|
||||
__u8 elpe;
|
||||
__u8 npss;
|
||||
__u8 rsvd264[248];
|
||||
__u8 avscc;
|
||||
__u8 apsta;
|
||||
__le16 wctemp;
|
||||
__le16 cctemp;
|
||||
__u8 rsvd270[242];
|
||||
__u8 sqes;
|
||||
__u8 cqes;
|
||||
__u8 rsvd514[2];
|
||||
|
|
@ -68,7 +75,12 @@ struct nvme_id_ctrl {
|
|||
__u8 vwc;
|
||||
__le16 awun;
|
||||
__le16 awupf;
|
||||
__u8 rsvd530[1518];
|
||||
__u8 nvscc;
|
||||
__u8 rsvd531;
|
||||
__le16 acwu;
|
||||
__u8 rsvd534[2];
|
||||
__le32 sgls;
|
||||
__u8 rsvd540[1508];
|
||||
struct nvme_id_power_state psd[32];
|
||||
__u8 vs[1024];
|
||||
};
|
||||
|
|
@ -77,6 +89,7 @@ enum {
|
|||
NVME_CTRL_ONCS_COMPARE = 1 << 0,
|
||||
NVME_CTRL_ONCS_WRITE_UNCORRECTABLE = 1 << 1,
|
||||
NVME_CTRL_ONCS_DSM = 1 << 2,
|
||||
NVME_CTRL_VWC_PRESENT = 1 << 0,
|
||||
};
|
||||
|
||||
struct nvme_lbaf {
|
||||
|
|
@ -95,7 +108,15 @@ struct nvme_id_ns {
|
|||
__u8 mc;
|
||||
__u8 dpc;
|
||||
__u8 dps;
|
||||
__u8 rsvd30[98];
|
||||
__u8 nmic;
|
||||
__u8 rescap;
|
||||
__u8 fpi;
|
||||
__u8 rsvd33;
|
||||
__le16 nawun;
|
||||
__le16 nawupf;
|
||||
__le16 nacwu;
|
||||
__u8 rsvd40[80];
|
||||
__u8 eui64[8];
|
||||
struct nvme_lbaf lbaf[16];
|
||||
__u8 rsvd192[192];
|
||||
__u8 vs[3712];
|
||||
|
|
@ -126,7 +147,10 @@ struct nvme_smart_log {
|
|||
__u8 unsafe_shutdowns[16];
|
||||
__u8 media_errors[16];
|
||||
__u8 num_err_log_entries[16];
|
||||
__u8 rsvd192[320];
|
||||
__le32 warning_temp_time;
|
||||
__le32 critical_comp_time;
|
||||
__le16 temp_sensor[8];
|
||||
__u8 rsvd216[296];
|
||||
};
|
||||
|
||||
enum {
|
||||
|
|
@ -282,6 +306,10 @@ enum {
|
|||
NVME_FEAT_WRITE_ATOMIC = 0x0a,
|
||||
NVME_FEAT_ASYNC_EVENT = 0x0b,
|
||||
NVME_FEAT_SW_PROGRESS = 0x0c,
|
||||
NVME_LOG_ERROR = 0x01,
|
||||
NVME_LOG_SMART = 0x02,
|
||||
NVME_LOG_FW_SLOT = 0x03,
|
||||
NVME_LOG_RESERVATION = 0x80,
|
||||
NVME_FWACT_REPL = (0 << 3),
|
||||
NVME_FWACT_REPL_ACTV = (1 << 3),
|
||||
NVME_FWACT_ACTV = (2 << 3),
|
||||
|
|
|
|||
Loading…
Reference in New Issue