+struct sed_cb_data {
+ sec_cb *cb;
+ void *cb_data;
+ struct nvme_command cmd;
+};
+
+static void sec_submit_endio(struct request *req, int error)
+{
+ struct sed_cb_data *sed_data = req->end_io_data;
+
+ if (sed_data->cb)
+ sed_data->cb(error, sed_data->cb_data);
+
+ kfree(sed_data);
+ blk_mq_free_request(req);
+}
+
+static int nvme_insert_rq(struct request_queue *q, struct request *rq,
+ int at_head, rq_end_io_fn *done)
+{
+ WARN_ON(rq->cmd_type == REQ_TYPE_FS);
+
+ rq->end_io = done;
+
+ if (!q->mq_ops)
+ return -EINVAL;
+
+ blk_mq_insert_request(rq, at_head, true, true);
+
+ return 0;
+}
No need for this function... you control the call site...
+
+static int nvme_sec_submit(void *data, u8 opcode, u16 SPSP,
+ u8 SECP, void *buffer, size_t len,
+ sec_cb *cb, void *cb_data)
+{
+ struct request_queue *q;
+ struct request *req;
+ struct sed_cb_data *sed_data;
+ struct nvme_ns *ns;
+ struct nvme_command *cmd;
+ int ret;
+
+ ns = data;//bdev->bd_disk->private_data;
??
you don't even have data anywhere in here...
+
+ sed_data = kzalloc(sizeof(*sed_data), GFP_NOWAIT);
+ if (!sed_data)
+ return -ENOMEM;
+ sed_data->cb = cb;
+ sed_data->cb_data = cb_data;
+ cmd = &sed_data->cmd;
+
+ cmd->common.opcode = opcode;
+ cmd->common.nsid = ns->ns_id;
+ cmd->common.cdw10[0] = SECP << 24 | SPSP << 8;
+ cmd->common.cdw10[1] = len;
+
+ q = ns->ctrl->admin_q;
+
+ req = nvme_alloc_request(q, cmd, 0, NVME_QID_ANY);
+ if (IS_ERR(req)) {
+ ret = PTR_ERR(req);
+ goto err_free;
+ }
+
+ req->timeout = ADMIN_TIMEOUT;
+ req->special = NULL;
+
+ if (buffer && len) {
+ ret = blk_rq_map_kern(q, req, buffer, len, GFP_NOWAIT);
+ if (ret) {
+ blk_mq_free_request(req);
+ goto err_free;
+ }
+ }
+
+ req->end_io_data = sed_data;
+ //req->rq_disk = bdev->bd_disk;
??
+
+ return nvme_insert_rq(q, req, 1, sec_submit_endio);
No need to introduce nvme_insert_rq at all, just call
blk_mq_insert_request (other examples call blk_execute_rq_nowait
but its pretty much the same...)
@@ -582,6 +583,7 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
struct nvme_command cmnd;
unsigned map_len;
int ret = BLK_MQ_RQ_QUEUE_OK;
+ unsigned long flags;
/*
* If formated with metadata, require the block layer provide a buffer
@@ -614,18 +616,18 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
cmnd.common.command_id = req->tag;
blk_mq_start_request(req);
- spin_lock_irq(&nvmeq->q_lock);
+ spin_lock_irqsave(&nvmeq->q_lock, flags);
if (unlikely(nvmeq->cq_vector < 0)) {
if (ns && !test_bit(NVME_NS_DEAD, &ns->flags))
ret = BLK_MQ_RQ_QUEUE_BUSY;
else
ret = BLK_MQ_RQ_QUEUE_ERROR;
- spin_unlock_irq(&nvmeq->q_lock);
+ spin_unlock_irqrestore(&nvmeq->q_lock, flags);
goto out;
}
__nvme_submit_cmd(nvmeq, &cmnd);
nvme_process_cq(nvmeq);
- spin_unlock_irq(&nvmeq->q_lock);
+ spin_unlock_irqrestore(&nvmeq->q_lock, flags);
No documentation why this is needed...
return BLK_MQ_RQ_QUEUE_OK;
out:
nvme_free_iod(dev, req);
@@ -635,11 +637,11 @@ static int nvme_queue_rq(struct blk_mq_hw_ctx *hctx,
static void nvme_complete_rq(struct request *req)
{
struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
- struct nvme_dev *dev = iod->nvmeq->dev;
+ struct nvme_queue *nvmeq = iod->nvmeq;
+ struct nvme_dev *dev = nvmeq->dev;
This is a cleanup that should go in a different patch...
int error = 0;
nvme_unmap_data(dev, req);
-
Same here...
if (unlikely(req->errors)) {
if (nvme_req_needs_retry(req, req->errors)) {
req->retries++;
@@ -658,7 +660,6 @@ static void nvme_complete_rq(struct request *req)
"completing aborted command with status: %04x\n",
req->errors);
}
-
Here...
blk_mq_end_request(req, error);
}
@@ -1758,10 +1759,11 @@ static void nvme_reset_work(struct work_struct *work)
{
struct nvme_dev *dev = container_of(work, struct nvme_dev, reset_work);
int result = -ENODEV;
-
+ bool was_suspend = false;
if (WARN_ON(dev->ctrl.state == NVME_CTRL_RESETTING))
goto out;
+ was_suspend = !!(dev->ctrl.ctrl_config & NVME_CC_SHN_NORMAL);
/*
* If we're called to reset a live controller first shut it down before
* moving on.
@@ -1789,6 +1791,9 @@ static void nvme_reset_work(struct work_struct *work)
if (result)
goto out;
+ if (was_suspend)
+ nvme_unlock_from_suspend(&dev->ctrl);
+
result = nvme_setup_io_queues(dev);
if (result)
goto out;
--
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