diff options
Diffstat (limited to 'drivers/nvme/host/core.c')
-rw-r--r-- | drivers/nvme/host/core.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 899bb41..3cf366a 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -1584,6 +1584,54 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl) } EXPORT_SYMBOL_GPL(nvme_remove_namespaces); +static void nvme_async_event_work(struct work_struct *work) +{ + struct nvme_ctrl *ctrl = + container_of(work, struct nvme_ctrl, async_event_work); + + spin_lock_irq(&ctrl->lock); + while (ctrl->event_limit > 0) { + int aer_idx = --ctrl->event_limit; + + spin_unlock_irq(&ctrl->lock); + ctrl->ops->submit_async_event(ctrl, aer_idx); + spin_lock_irq(&ctrl->lock); + } + spin_unlock_irq(&ctrl->lock); +} + +void nvme_complete_async_event(struct nvme_ctrl *ctrl, + struct nvme_completion *cqe) +{ + u16 status = le16_to_cpu(cqe->status) >> 1; + u32 result = le32_to_cpu(cqe->result); + + if (status == NVME_SC_SUCCESS || status == NVME_SC_ABORT_REQ) { + ++ctrl->event_limit; + schedule_work(&ctrl->async_event_work); + } + + if (status != NVME_SC_SUCCESS) + return; + + switch (result & 0xff07) { + case NVME_AER_NOTICE_NS_CHANGED: + dev_info(ctrl->device, "rescanning\n"); + nvme_queue_scan(ctrl); + break; + default: + dev_warn(ctrl->device, "async event result %08x\n", result); + } +} +EXPORT_SYMBOL_GPL(nvme_complete_async_event); + +void nvme_queue_async_events(struct nvme_ctrl *ctrl) +{ + ctrl->event_limit = NVME_NR_AERS; + schedule_work(&ctrl->async_event_work); +} +EXPORT_SYMBOL_GPL(nvme_queue_async_events); + static DEFINE_IDA(nvme_instance_ida); static int nvme_set_instance(struct nvme_ctrl *ctrl) @@ -1615,6 +1663,7 @@ static void nvme_release_instance(struct nvme_ctrl *ctrl) void nvme_uninit_ctrl(struct nvme_ctrl *ctrl) { + flush_work(&ctrl->async_event_work); flush_work(&ctrl->scan_work); nvme_remove_namespaces(ctrl); @@ -1662,6 +1711,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev, ctrl->ops = ops; ctrl->quirks = quirks; INIT_WORK(&ctrl->scan_work, nvme_scan_work); + INIT_WORK(&ctrl->async_event_work, nvme_async_event_work); ret = nvme_set_instance(ctrl); if (ret) |