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nvme: submit AEN event configuration on startup 

We should register for AEN events; some law-abiding targets might
not be sending us AENs otherwise.

Signed-off-by: Hannes Reinecke <hare@suse.com>
[hch: slight cleanups]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
This commit is contained in:
Hannes Reinecke 2018-05-22 11:09:55 +02:00 committed by Christoph Hellwig
parent 55fdd6b613
commit c0561f82a7
2 changed files with 18 additions and 0 deletions
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17
drivers/nvme/host/core.c
View File

@ -1030,6 +1030,21 @@ int nvme_set_queue_count(struct nvme_ctrl *ctrl, int *count)
}
EXPORT_SYMBOL_GPL(nvme_set_queue_count);
#define NVME_AEN_SUPPORTED \
(NVME_AEN_CFG_NS_ATTR | NVME_AEN_CFG_FW_ACT)
static void nvme_enable_aen(struct nvme_ctrl *ctrl)
{
u32 result;
int status;
status = nvme_set_features(ctrl, NVME_FEAT_ASYNC_EVENT,
ctrl->oaes & NVME_AEN_SUPPORTED, NULL, 0, &result);
if (status)
dev_warn(ctrl->device, "Failed to configure AEN (cfg %x)\n",
ctrl->oaes & NVME_AEN_SUPPORTED);
}
static int nvme_submit_io(struct nvme_ns *ns, struct nvme_user_io __user *uio)
{
struct nvme_user_io io;
@ -2347,6 +2362,7 @@ int nvme_init_identify(struct nvme_ctrl *ctrl)
ctrl->oacs = le16_to_cpu(id->oacs);
ctrl->oncs = le16_to_cpup(&id->oncs);
ctrl->oaes = le32_to_cpu(id->oaes);
atomic_set(&ctrl->abort_limit, id->acl + 1);
ctrl->vwc = id->vwc;
ctrl->cntlid = le16_to_cpup(&id->cntlid);
@ -3379,6 +3395,7 @@ void nvme_start_ctrl(struct nvme_ctrl *ctrl)
if (ctrl->queue_count > 1) {
nvme_queue_scan(ctrl);
nvme_enable_aen(ctrl);
queue_work(nvme_wq, &ctrl->async_event_work);
nvme_start_queues(ctrl);
}

1
drivers/nvme/host/nvme.h
View File

@ -176,6 +176,7 @@ struct nvme_ctrl {
u16 kas;
u8 npss;
u8 apsta;
u32 oaes;
u32 aen_result;
unsigned int shutdown_timeout;
unsigned int kato;