nvme: lightnvm: use admin queues for admin cmds

According to the Open-Channel SSD Specification, the NVMe-NVM admin
commands use vendor specific opcodes of NVMe, so use the NVMe admin
queue to dispatch these commands.

Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Updated by me to include set bad block table as well and also use
the admin queue for l2p len calculation.

Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index 7e82fe33d6f83ea11123fc974b30ea8b49ac3911..9202d1a468d049f30284f39e6c2894e0711b3add 100644 (file)
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -276,6 +276,7 @@ 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;
@@ -288,8 +289,8 @@ 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;
@@ -315,7 +316,7 @@ static int nvme_nvm_get_l2p_tbl(struct request_queue *q, u64 slba, u32 nlb,
        struct nvme_ns *ns = q->queuedata;
        struct nvme_dev *dev = ns->dev;
        struct nvme_nvm_command c = {};
-       u32 len = queue_max_hw_sectors(q) << 9;
+       u32 len = queue_max_hw_sectors(dev->admin_q) << 9;
        u32 nlb_pr_rq = len / sizeof(u64);
        u64 cmd_slba = slba;
        void *entries;
@@ -333,8 +334,8 @@ 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);
@@ -375,7 +376,8 @@ static int nvme_nvm_get_bb_tbl(struct request_queue *q, struct ppa_addr ppa,
        if (!bb_tbl)
                return -ENOMEM;
 
-       ret = nvme_submit_sync_cmd(q, (struct nvme_command *)&c, bb_tbl, tblsz);
+       ret = nvme_submit_sync_cmd(dev->admin_q, (struct nvme_command *)&c,
+                                                               bb_tbl, tblsz);
        if (ret) {
                dev_err(dev->dev, "get bad block table failed (%d)\n", ret);
                ret = -EIO;
@@ -427,7 +429,8 @@ static int nvme_nvm_set_bb_tbl(struct request_queue *q, struct nvm_rq *rqd,
        c.set_bb.nlb = cpu_to_le16(rqd->nr_pages - 1);
        c.set_bb.value = type;
 
-       ret = nvme_submit_sync_cmd(q, (struct nvme_command *)&c, NULL, 0);
+       ret = nvme_submit_sync_cmd(dev->admin_q, (struct nvme_command *)&c,
+                                                               NULL, 0);
        if (ret)
                dev_err(dev->dev, "set bad block table failed (%d)\n", ret);
        return ret;