linux-kernel - [PATCH] nvme: lightnvm: use nvme admin queue

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Message-Id: <1448000896-4526-1-git-send-email-ww.tao0320@gmail.com>
Date:	Fri, 20 Nov 2015 14:28:16 +0800
From:	Wenwei Tao <ww.tao0320@...il.com>
To:	mb@...htnvm.io
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] nvme: lightnvm: use nvme admin queue

According to Open-ChannelSSDInterfaceSpecification 0.1,
NVMe-NVM admin commands use vendor specific admin opcodes
of NVMe, so use the NVMe admin queue to dispatch these
commands

Signed-off-by: Wenwei Tao <ww.tao0320@...il.com>
---
 drivers/nvme/host/lightnvm.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index e0b7b95..7d1981d 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -244,6 +244,7 @@ static int init_grps(struct nvm_id *nvm_id, struct nvme_nvm_id *nvme_nvm_id)
 static int nvme_nvm_identity(struct request_queue *q, struct nvm_id *nvm_id)
 {
 	struct nvme_ns *ns = q->queuedata;
+	struct nvme_dev *dev = ns->dev;
 	struct nvme_nvm_id *nvme_nvm_id;
 	struct nvme_nvm_command c = {};
 	int ret;
@@ -256,8 +257,8 @@ static int nvme_nvm_identity(struct request_queue *q, struct nvm_id *nvm_id)
 	if (!nvme_nvm_id)
 		return -ENOMEM;
 
-	ret = nvme_submit_sync_cmd(q, (struct nvme_command *)&c, nvme_nvm_id,
-						sizeof(struct nvme_nvm_id));
+	ret = nvme_submit_sync_cmd(dev->admin_q, (struct nvme_command *)&c,
+				nvme_nvm_id, sizeof(struct nvme_nvm_id));
 	if (ret) {
 		ret = -EIO;
 		goto out;
@@ -299,8 +300,8 @@ static int nvme_nvm_get_l2p_tbl(struct request_queue *q, u64 slba, u32 nlb,
 		c.l2p.slba = cpu_to_le64(cmd_slba);
 		c.l2p.nlb = cpu_to_le32(cmd_nlb);
 
-		ret = nvme_submit_sync_cmd(q, (struct nvme_command *)&c,
-								entries, len);
+		ret = nvme_submit_sync_cmd(dev->admin_q,
+				(struct nvme_command *)&c, entries, len);
 		if (ret) {
 			dev_err(dev->dev, "L2P table transfer failed (%d)\n",
 									ret);
@@ -343,8 +344,8 @@ static int nvme_nvm_get_bb_tbl(struct request_queue *q, int lunid,
 
 	bitmap_zero(bb_bitmap, nr_blocks);
 
-	ret = nvme_submit_sync_cmd(q, (struct nvme_command *)&c, bb_bitmap,
-								bb_bitmap_size);
+	ret = nvme_submit_sync_cmd(dev->admin_q, (struct nvme_command *)&c,
+						bb_bitmap, bb_bitmap_size);
 	if (ret) {
 		dev_err(dev->dev, "get bad block table failed (%d)\n", ret);
 		ret = -EIO;
-- 
1.8.3.1

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