remove the lightnvm subsystem

Lightnvm supports the OCSSD 1.x and 2.0 specs which were early attempts
to produce Open Channel SSDs and never made it into the NVMe spec
proper.  They have since been superceeded by NVMe enhancements such
as ZNS support.  Remove the support per the deprecation schedule.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210812132308.38486-1-hch@lst.de
Reviewed-by: Matias Bjørling <mb@lightnvm.io>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

6 files changed, 1 insertions, 1323 deletions

diff --git a/drivers/nvme/host/Makefile b/drivers/nvme/host/Makefile
index cbc509784b2e..dfaacd472e5d 100644
--- a/drivers/nvme/host/Makefile
+++ b/drivers/nvme/host/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_NVME_TCP)			+= nvme-tcp.o
 nvme-core-y				:= core.o ioctl.o
 nvme-core-$(CONFIG_TRACING)		+= trace.o
 nvme-core-$(CONFIG_NVME_MULTIPATH)	+= multipath.o
-nvme-core-$(CONFIG_NVM)			+= lightnvm.o
 nvme-core-$(CONFIG_BLK_DEV_ZONED)	+= zns.o
 nvme-core-$(CONFIG_FAULT_INJECTION_DEBUG_FS)	+= fault_inject.o
 nvme-core-$(CONFIG_NVME_HWMON)		+= hwmon.o
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index dfd9dec0c1f6..ce33014e3eb0 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -587,9 +587,6 @@ static void nvme_free_ns(struct kref *kref)
 {
 	struct nvme_ns *ns = container_of(kref, struct nvme_ns, kref);
 
-	if (ns->ndev)
-		nvme_nvm_unregister(ns);
-
 	put_disk(ns->disk);
 	nvme_put_ns_head(ns->head);
 	nvme_put_ctrl(ns->ctrl);
@@ -3218,9 +3215,6 @@ static const struct attribute_group nvme_ns_id_attr_group = {
 
 const struct attribute_group *nvme_ns_id_attr_groups[] = {
 	&nvme_ns_id_attr_group,
-#ifdef CONFIG_NVM
-	&nvme_nvm_attr_group,
-#endif
 	NULL,
 };
 
@@ -3767,13 +3761,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid,
 	if (nvme_update_ns_info(ns, id))
 		goto out_put_disk;
 
-	if ((ctrl->quirks & NVME_QUIRK_LIGHTNVM) && id->vs[0] == 0x1) {
-		if (nvme_nvm_register(ns, disk->disk_name, node)) {
-			dev_warn(ctrl->device, "LightNVM init failure\n");
-			goto out_put_disk;
-		}
-	}
-
 	down_write(&ctrl->namespaces_rwsem);
 	list_add_tail(&ns->list, &ctrl->namespaces);
 	up_write(&ctrl->namespaces_rwsem);
diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
index 305ddd415e45..22314962842d 100644
--- a/drivers/nvme/host/ioctl.c
+++ b/drivers/nvme/host/ioctl.c
@@ -342,9 +342,7 @@ static int nvme_ns_ioctl(struct nvme_ns *ns, unsigned int cmd,
 	case NVME_IOCTL_IO64_CMD:
 		return nvme_user_cmd64(ns->ctrl, ns, argp);
 	default:
-		if (!ns->ndev)
-			return -ENOTTY;
-		return nvme_nvm_ioctl(ns, cmd, argp);
+		return -ENOTTY;
 	}
 }
 
diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
deleted file mode 100644
index e9d9ad47f70f..000000000000
--- a/drivers/nvme/host/lightnvm.c
+++ /dev/null
@@ -1,1274 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * nvme-lightnvm.c - LightNVM NVMe device
- *
- * Copyright (C) 2014-2015 IT University of Copenhagen
- * Initial release: Matias Bjorling <mb@lightnvm.io>
- */
-
-#include "nvme.h"
-
-#include <linux/nvme.h>
-#include <linux/bitops.h>
-#include <linux/lightnvm.h>
-#include <linux/vmalloc.h>
-#include <linux/sched/sysctl.h>
-#include <uapi/linux/lightnvm.h>
-
-enum nvme_nvm_admin_opcode {
-	nvme_nvm_admin_identity		= 0xe2,
-	nvme_nvm_admin_get_bb_tbl	= 0xf2,
-	nvme_nvm_admin_set_bb_tbl	= 0xf1,
-};
-
-enum nvme_nvm_log_page {
-	NVME_NVM_LOG_REPORT_CHUNK	= 0xca,
-};
-
-struct nvme_nvm_ph_rw {
-	__u8			opcode;
-	__u8			flags;
-	__u16			command_id;
-	__le32			nsid;
-	__u64			rsvd2;
-	__le64			metadata;
-	__le64			prp1;
-	__le64			prp2;
-	__le64			spba;
-	__le16			length;
-	__le16			control;
-	__le32			dsmgmt;
-	__le64			resv;
-};
-
-struct nvme_nvm_erase_blk {
-	__u8			opcode;
-	__u8			flags;
-	__u16			command_id;
-	__le32			nsid;
-	__u64			rsvd[2];
-	__le64			prp1;
-	__le64			prp2;
-	__le64			spba;
-	__le16			length;
-	__le16			control;
-	__le32			dsmgmt;
-	__le64			resv;
-};
-
-struct nvme_nvm_identity {
-	__u8			opcode;
-	__u8			flags;
-	__u16			command_id;
-	__le32			nsid;
-	__u64			rsvd[2];
-	__le64			prp1;
-	__le64			prp2;
-	__u32			rsvd11[6];
-};
-
-struct nvme_nvm_getbbtbl {
-	__u8			opcode;
-	__u8			flags;
-	__u16			command_id;
-	__le32			nsid;
-	__u64			rsvd[2];
-	__le64			prp1;
-	__le64			prp2;
-	__le64			spba;
-	__u32			rsvd4[4];
-};
-
-struct nvme_nvm_setbbtbl {
-	__u8			opcode;
-	__u8			flags;
-	__u16			command_id;
-	__le32			nsid;
-	__le64			rsvd[2];
-	__le64			prp1;
-	__le64			prp2;
-	__le64			spba;
-	__le16			nlb;
-	__u8			value;
-	__u8			rsvd3;
-	__u32			rsvd4[3];
-};
-
-struct nvme_nvm_command {
-	union {
-		struct nvme_common_command common;
-		struct nvme_nvm_ph_rw ph_rw;
-		struct nvme_nvm_erase_blk erase;
-		struct nvme_nvm_identity identity;
-		struct nvme_nvm_getbbtbl get_bb;
-		struct nvme_nvm_setbbtbl set_bb;
-	};
-};
-
-struct nvme_nvm_id12_grp {
-	__u8			mtype;
-	__u8			fmtype;
-	__le16			res16;
-	__u8			num_ch;
-	__u8			num_lun;
-	__u8			num_pln;
-	__u8			rsvd1;
-	__le16			num_chk;
-	__le16			num_pg;
-	__le16			fpg_sz;
-	__le16			csecs;
-	__le16			sos;
-	__le16			rsvd2;
-	__le32			trdt;
-	__le32			trdm;
-	__le32			tprt;
-	__le32			tprm;
-	__le32			tbet;
-	__le32			tbem;
-	__le32			mpos;
-	__le32			mccap;
-	__le16			cpar;
-	__u8			reserved[906];
-} __packed;
-
-struct nvme_nvm_id12_addrf {
-	__u8			ch_offset;
-	__u8			ch_len;
-	__u8			lun_offset;
-	__u8			lun_len;
-	__u8			pln_offset;
-	__u8			pln_len;
-	__u8			blk_offset;
-	__u8			blk_len;
-	__u8			pg_offset;
-	__u8			pg_len;
-	__u8			sec_offset;
-	__u8			sec_len;
-	__u8			res[4];
-} __packed;
-
-struct nvme_nvm_id12 {
-	__u8			ver_id;
-	__u8			vmnt;
-	__u8			cgrps;
-	__u8			res;
-	__le32			cap;
-	__le32			dom;
-	struct nvme_nvm_id12_addrf ppaf;
-	__u8			resv[228];
-	struct nvme_nvm_id12_grp grp;
-	__u8			resv2[2880];
-} __packed;
-
-struct nvme_nvm_bb_tbl {
-	__u8	tblid[4];
-	__le16	verid;
-	__le16	revid;
-	__le32	rvsd1;
-	__le32	tblks;
-	__le32	tfact;
-	__le32	tgrown;
-	__le32	tdresv;
-	__le32	thresv;
-	__le32	rsvd2[8];
-	__u8	blk[];
-};
-
-struct nvme_nvm_id20_addrf {
-	__u8			grp_len;
-	__u8			pu_len;
-	__u8			chk_len;
-	__u8			lba_len;
-	__u8			resv[4];
-};
-
-struct nvme_nvm_id20 {
-	__u8			mjr;
-	__u8			mnr;
-	__u8			resv[6];
-
-	struct nvme_nvm_id20_addrf lbaf;
-
-	__le32			mccap;
-	__u8			resv2[12];
-
-	__u8			wit;
-	__u8			resv3[31];
-
-	/* Geometry */
-	__le16			num_grp;
-	__le16			num_pu;
-	__le32			num_chk;
-	__le32			clba;
-	__u8			resv4[52];
-
-	/* Write data requirements */
-	__le32			ws_min;
-	__le32			ws_opt;
-	__le32			mw_cunits;
-	__le32			maxoc;
-	__le32			maxocpu;
-	__u8			resv5[44];
-
-	/* Performance related metrics */
-	__le32			trdt;
-	__le32			trdm;
-	__le32			twrt;
-	__le32			twrm;
-	__le32			tcrst;
-	__le32			tcrsm;
-	__u8			resv6[40];
-
-	/* Reserved area */
-	__u8			resv7[2816];
-
-	/* Vendor specific */
-	__u8			vs[1024];
-};
-
-struct nvme_nvm_chk_meta {
-	__u8	state;
-	__u8	type;
-	__u8	wi;
-	__u8	rsvd[5];
-	__le64	slba;
-	__le64	cnlb;
-	__le64	wp;
-};
-
-/*
- * Check we didn't inadvertently grow the command struct
- */
-static inline void _nvme_nvm_check_size(void)
-{
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_identity) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_ph_rw) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_erase_blk) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_getbbtbl) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_setbbtbl) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_grp) != 960);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_id12_addrf) != 16);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_id12) != NVME_IDENTIFY_DATA_SIZE);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_bb_tbl) != 64);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_id20_addrf) != 8);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_id20) != NVME_IDENTIFY_DATA_SIZE);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) != 32);
-	BUILD_BUG_ON(sizeof(struct nvme_nvm_chk_meta) !=
-						sizeof(struct nvm_chk_meta));
-}
-
-static void nvme_nvm_set_addr_12(struct nvm_addrf_12 *dst,
-				 struct nvme_nvm_id12_addrf *src)
-{
-	dst->ch_len = src->ch_len;
-	dst->lun_len = src->lun_len;
-	dst->blk_len = src->blk_len;
-	dst->pg_len = src->pg_len;
-	dst->pln_len = src->pln_len;
-	dst->sec_len = src->sec_len;
-
-	dst->ch_offset = src->ch_offset;
-	dst->lun_offset = src->lun_offset;
-	dst->blk_offset = src->blk_offset;
-	dst->pg_offset = src->pg_offset;
-	dst->pln_offset = src->pln_offset;
-	dst->sec_offset = src->sec_offset;
-
-	dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
-	dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
-	dst->blk_mask = ((1ULL << dst->blk_len) - 1) << dst->blk_offset;
-	dst->pg_mask = ((1ULL << dst->pg_len) - 1) << dst->pg_offset;
-	dst->pln_mask = ((1ULL << dst->pln_len) - 1) << dst->pln_offset;
-	dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
-}
-
-static int nvme_nvm_setup_12(struct nvme_nvm_id12 *id,
-			     struct nvm_geo *geo)
-{
-	struct nvme_nvm_id12_grp *src;
-	int sec_per_pg, sec_per_pl, pg_per_blk;
-
-	if (id->cgrps != 1)
-		return -EINVAL;
-
-	src = &id->grp;
-
-	if (src->mtype != 0) {
-		pr_err("nvm: memory type not supported\n");
-		return -EINVAL;
-	}
-
-	/* 1.2 spec. only reports a single version id - unfold */
-	geo->major_ver_id = id->ver_id;
-	geo->minor_ver_id = 2;
-
-	/* Set compacted version for upper layers */
-	geo->version = NVM_OCSSD_SPEC_12;
-
-	geo->num_ch = src->num_ch;
-	geo->num_lun = src->num_lun;
-	geo->all_luns = geo->num_ch * geo->num_lun;
-
-	geo->num_chk = le16_to_cpu(src->num_chk);
-
-	geo->csecs = le16_to_cpu(src->csecs);
-	geo->sos = le16_to_cpu(src->sos);
-
-	pg_per_blk = le16_to_cpu(src->num_pg);
-	sec_per_pg = le16_to_cpu(src->fpg_sz) / geo->csecs;
-	sec_per_pl = sec_per_pg * src->num_pln;
-	geo->clba = sec_per_pl * pg_per_blk;
-
-	geo->all_chunks = geo->all_luns * geo->num_chk;
-	geo->total_secs = geo->clba * geo->all_chunks;
-
-	geo->ws_min = sec_per_pg;
-	geo->ws_opt = sec_per_pg;
-	geo->mw_cunits = geo->ws_opt << 3;	/* default to MLC safe values */
-
-	/* Do not impose values for maximum number of open blocks as it is
-	 * unspecified in 1.2. Users of 1.2 must be aware of this and eventually
-	 * specify these values through a quirk if restrictions apply.
-	 */
-	geo->maxoc = geo->all_luns * geo->num_chk;
-	geo->maxocpu = geo->num_chk;
-
-	geo->mccap = le32_to_cpu(src->mccap);
-
-	geo->trdt = le32_to_cpu(src->trdt);
-	geo->trdm = le32_to_cpu(src->trdm);
-	geo->tprt = le32_to_cpu(src->tprt);
-	geo->tprm = le32_to_cpu(src->tprm);
-	geo->tbet = le32_to_cpu(src->tbet);
-	geo->tbem = le32_to_cpu(src->tbem);
-
-	/* 1.2 compatibility */
-	geo->vmnt = id->vmnt;
-	geo->cap = le32_to_cpu(id->cap);
-	geo->dom = le32_to_cpu(id->dom);
-
-	geo->mtype = src->mtype;
-	geo->fmtype = src->fmtype;
-
-	geo->cpar = le16_to_cpu(src->cpar);
-	geo->mpos = le32_to_cpu(src->mpos);
-
-	geo->pln_mode = NVM_PLANE_SINGLE;
-
-	if (geo->mpos & 0x020202) {
-		geo->pln_mode = NVM_PLANE_DOUBLE;
-		geo->ws_opt <<= 1;
-	} else if (geo->mpos & 0x040404) {
-		geo->pln_mode = NVM_PLANE_QUAD;
-		geo->ws_opt <<= 2;
-	}
-
-	geo->num_pln = src->num_pln;
-	geo->num_pg = le16_to_cpu(src->num_pg);
-	geo->fpg_sz = le16_to_cpu(src->fpg_sz);
-
-	nvme_nvm_set_addr_12((struct nvm_addrf_12 *)&geo->addrf, &id->ppaf);
-
-	return 0;
-}
-
-static void nvme_nvm_set_addr_20(struct nvm_addrf *dst,
-				 struct nvme_nvm_id20_addrf *src)
-{
-	dst->ch_len = src->grp_len;
-	dst->lun_len = src->pu_len;
-	dst->chk_len = src->chk_len;
-	dst->sec_len = src->lba_len;
-
-	dst->sec_offset = 0;
-	dst->chk_offset = dst->sec_len;
-	dst->lun_offset = dst->chk_offset + dst->chk_len;
-	dst->ch_offset = dst->lun_offset + dst->lun_len;
-
-	dst->ch_mask = ((1ULL << dst->ch_len) - 1) << dst->ch_offset;
-	dst->lun_mask = ((1ULL << dst->lun_len) - 1) << dst->lun_offset;
-	dst->chk_mask = ((1ULL << dst->chk_len) - 1) << dst->chk_offset;
-	dst->sec_mask = ((1ULL << dst->sec_len) - 1) << dst->sec_offset;
-}
-
-static int nvme_nvm_setup_20(struct nvme_nvm_id20 *id,
-			     struct nvm_geo *geo)
-{
-	geo->major_ver_id = id->mjr;
-	geo->minor_ver_id = id->mnr;
-
-	/* Set compacted version for upper layers */
-	geo->version = NVM_OCSSD_SPEC_20;
-
-	geo->num_ch = le16_to_cpu(id->num_grp);
-	geo->num_lun = le16_to_cpu(id->num_pu);
-	geo->all_luns = geo->num_ch * geo->num_lun;
-
-	geo->num_chk = le32_to_cpu(id->num_chk);
-	geo->clba = le32_to_cpu(id->clba);
-
-	geo->all_chunks = geo->all_luns * geo->num_chk;
-	geo->total_secs = geo->clba * geo->all_chunks;
-
-	geo->ws_min = le32_to_cpu(id->ws_min);
-	geo->ws_opt = le32_to_cpu(id->ws_opt);
-	geo->mw_cunits = le32_to_cpu(id->mw_cunits);
-	geo->maxoc = le32_to_cpu(id->maxoc);
-	geo->maxocpu = le32_to_cpu(id->maxocpu);
-
-	geo->trdt = le32_to_cpu(id->trdt);
-	geo->trdm = le32_to_cpu(id->trdm);
-	geo->tprt = le32_to_cpu(id->twrt);
-	geo->tprm = le32_to_cpu(id->twrm);
-	geo->tbet = le32_to_cpu(id->tcrst);
-	geo->tbem = le32_to_cpu(id->tcrsm);
-
-	nvme_nvm_set_addr_20(&geo->addrf, &id->lbaf);
-
-	return 0;
-}
-
-static int nvme_nvm_identity(struct nvm_dev *nvmdev)
-{
-	struct nvme_ns *ns = nvmdev->q->queuedata;
-	struct nvme_nvm_id12 *id;
-	struct nvme_nvm_command c = {};
-	int ret;
-
-	c.identity.opcode = nvme_nvm_admin_identity;
-	c.identity.nsid = cpu_to_le32(ns->head->ns_id);
-
-	id = kmalloc(sizeof(struct nvme_nvm_id12), GFP_KERNEL);
-	if (!id)
-		return -ENOMEM;
-
-	ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
-				id, sizeof(struct nvme_nvm_id12));
-	if (ret) {
-		ret = -EIO;
-		goto out;
-	}
-
-	/*
-	 * The 1.2 and 2.0 specifications share the first byte in their geometry
-	 * command to make it possible to know what version a device implements.
-	 */
-	switch (id->ver_id) {
-	case 1:
-		ret = nvme_nvm_setup_12(id, &nvmdev->geo);
-		break;
-	case 2:
-		ret = nvme_nvm_setup_20((struct nvme_nvm_id20 *)id,
-							&nvmdev->geo);
-		break;
-	default:
-		dev_err(ns->ctrl->device, "OCSSD revision not supported (%d)\n",
-							id->ver_id);
-		ret = -EINVAL;
-	}
-
-out:
-	kfree(id);
-	return ret;
-}
-
-static int nvme_nvm_get_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr ppa,
-								u8 *blks)
-{
-	struct request_queue *q = nvmdev->q;
-	struct nvm_geo *geo = &nvmdev->geo;
-	struct nvme_ns *ns = q->queuedata;
-	struct nvme_ctrl *ctrl = ns->ctrl;
-	struct nvme_nvm_command c = {};
-	struct nvme_nvm_bb_tbl *bb_tbl;
-	int nr_blks = geo->num_chk * geo->num_pln;
-	int tblsz = sizeof(struct nvme_nvm_bb_tbl) + nr_blks;
-	int ret = 0;
-
-	c.get_bb.opcode = nvme_nvm_admin_get_bb_tbl;
-	c.get_bb.nsid = cpu_to_le32(ns->head->ns_id);
-	c.get_bb.spba = cpu_to_le64(ppa.ppa);
-
-	bb_tbl = kzalloc(tblsz, GFP_KERNEL);
-	if (!bb_tbl)
-		return -ENOMEM;
-
-	ret = nvme_submit_sync_cmd(ctrl->admin_q, (struct nvme_command *)&c,
-								bb_tbl, tblsz);
-	if (ret) {
-		dev_err(ctrl->device, "get bad block table failed (%d)\n", ret);
-		ret = -EIO;
-		goto out;
-	}
-
-	if (bb_tbl->tblid[0] != 'B' || bb_tbl->tblid[1] != 'B' ||
-		bb_tbl->tblid[2] != 'L' || bb_tbl->tblid[3] != 'T') {
-		dev_err(ctrl->device, "bbt format mismatch\n");
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (le16_to_cpu(bb_tbl->verid) != 1) {
-		ret = -EINVAL;
-		dev_err(ctrl->device, "bbt version not supported\n");
-		goto out;
-	}
-
-	if (le32_to_cpu(bb_tbl->tblks) != nr_blks) {
-		ret = -EINVAL;
-		dev_err(ctrl->device,
-				"bbt unsuspected blocks returned (%u!=%u)",
-				le32_to_cpu(bb_tbl->tblks), nr_blks);
-		goto out;
-	}
-
-	memcpy(blks, bb_tbl->blk, geo->num_chk * geo->num_pln);
-out:
-	kfree(bb_tbl);
-	return ret;
-}
-
-static int nvme_nvm_set_bb_tbl(struct nvm_dev *nvmdev, struct ppa_addr *ppas,
-							int nr_ppas, int type)
-{
-	struct nvme_ns *ns = nvmdev->q->queuedata;
-	struct nvme_nvm_command c = {};
-	int ret = 0;
-
-	c.set_bb.opcode = nvme_nvm_admin_set_bb_tbl;
-	c.set_bb.nsid = cpu_to_le32(ns->head->ns_id);
-	c.set_bb.spba = cpu_to_le64(ppas->ppa);
-	c.set_bb.nlb = cpu_to_le16(nr_ppas - 1);
-	c.set_bb.value = type;
-
-	ret = nvme_submit_sync_cmd(ns->ctrl->admin_q, (struct nvme_command *)&c,
-								NULL, 0);
-	if (ret)
-		dev_err(ns->ctrl->device, "set bad block table failed (%d)\n",
-									ret);
-	return ret;
-}
-
-/*
- * Expect the lba in device format
- */
-static int nvme_nvm_get_chk_meta(struct nvm_dev *ndev,
-				 sector_t slba, int nchks,
-				 struct nvm_chk_meta *meta)
-{
-	struct nvm_geo *geo = &ndev->geo;
-	struct nvme_ns *ns = ndev->q->queuedata;
-	struct nvme_ctrl *ctrl = ns->ctrl;
-	struct nvme_nvm_chk_meta *dev_meta, *dev_meta_off;
-	struct ppa_addr ppa;
-	size_t left = nchks * sizeof(struct nvme_nvm_chk_meta);
-	size_t log_pos, offset, len;
-	int i, max_len;
-	int ret = 0;
-
-	/*
-	 * limit requests to maximum 256K to avoid issuing arbitrary large
-	 * requests when the device does not specific a maximum transfer size.
-	 */
-	max_len = min_t(unsigned int, ctrl->max_hw_sectors << 9, 256 * 1024);
-
-	dev_meta = kmalloc(max_len, GFP_KERNEL);
-	if (!dev_meta)
-		return -ENOMEM;
-
-	/* Normalize lba address space to obtain log offset */
-	ppa.ppa = slba;
-	ppa = dev_to_generic_addr(ndev, ppa);
-
-	log_pos = ppa.m.chk;
-	log_pos += ppa.m.pu * geo->num_chk;
-	log_pos += ppa.m.grp * geo->num_lun * geo->num_chk;
-
-	offset = log_pos * sizeof(struct nvme_nvm_chk_meta);
-
-	while (left) {
-		len = min_t(unsigned int, left, max_len);
-
-		memset(dev_meta, 0, max_len);
-		dev_meta_off = dev_meta;
-
-		ret = nvme_get_log(ctrl, ns->head->ns_id,
-				NVME_NVM_LOG_REPORT_CHUNK, 0, NVME_CSI_NVM,
-				dev_meta, len, offset);
-		if (ret) {
-			dev_err(ctrl->device, "Get REPORT CHUNK log error\n");
-			break;
-		}
-
-		for (i = 0; i < len; i += sizeof(struct nvme_nvm_chk_meta)) {
-			meta->state = dev_meta_off->state;
-			meta->type = dev_meta_off->type;
-			meta->wi = dev_meta_off->wi;
-			meta->slba = le64_to_cpu(dev_meta_off->slba);
-			meta->cnlb = le64_to_cpu(dev_meta_off->cnlb);
-			meta->wp = le64_to_cpu(dev_meta_off->wp);
-
-			meta++;
-			dev_meta_off++;
-		}
-
-		offset += len;
-		left -= len;
-	}
-
-	kfree(dev_meta);
-
-	return ret;
-}
-
-static inline void nvme_nvm_rqtocmd(struct nvm_rq *rqd, struct nvme_ns *ns,
-				    struct nvme_nvm_command *c)
-{
-	c->ph_rw.opcode = rqd->opcode;
-	c->ph_rw.nsid = cpu_to_le32(ns->head->ns_id);
-	c->ph_rw.spba = cpu_to_le64(rqd->ppa_addr.ppa);
-	c->ph_rw.metadata = cpu_to_le64(rqd->dma_meta_list);
-	c->ph_rw.control = cpu_to_le16(rqd->flags);
-	c->ph_rw.length = cpu_to_le16(rqd->nr_ppas - 1);
-}
-
-static void nvme_nvm_end_io(struct request *rq, blk_status_t status)
-{
-	struct nvm_rq *rqd = rq->end_io_data;
-
-	rqd->ppa_status = le64_to_cpu(nvme_req(rq)->result.u64);
-	rqd->error = nvme_req(rq)->status;
-	nvm_end_io(rqd);
-
-	kfree(nvme_req(rq)->cmd);
-	blk_mq_free_request(rq);
-}
-
-static struct request *nvme_nvm_alloc_request(struct request_queue *q,
-					      struct nvm_rq *rqd,
-					      struct nvme_nvm_command *cmd)
-{
-	struct nvme_ns *ns = q->queuedata;
-	struct request *rq;
-
-	nvme_nvm_rqtocmd(rqd, ns, cmd);
-
-	rq = nvme_alloc_request(q, (struct nvme_command *)cmd, 0);
-	if (IS_ERR(rq))
-		return rq;
-
-	rq->cmd_flags &= ~REQ_FAILFAST_DRIVER;
-
-	if (rqd->bio)
-		blk_rq_append_bio(rq, rqd->bio);
-	else
-		rq->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM);
-
-	return rq;
-}
-
-static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd,
-			      void *buf)
-{
-	struct nvm_geo *geo = &dev->geo;
-	struct request_queue *q = dev->q;
-	struct nvme_nvm_command *cmd;
-	struct request *rq;
-	int ret;
-
-	cmd = kzalloc(sizeof(struct nvme_nvm_command), GFP_KERNEL);
-	if (!cmd)
-		return -ENOMEM;
-
-	rq = nvme_nvm_alloc_request(q, rqd, cmd);
-	if (IS_ERR(rq)) {
-		ret = PTR_ERR(rq);
-		goto err_free_cmd;
-	}
-
-	if (buf) {
-		ret = blk_rq_map_kern(q, rq, buf, geo->csecs * rqd->nr_ppas,
-				GFP_KERNEL);
-		if (ret)
-			goto err_free_cmd;
-	}
-
-	rq->end_io_data = rqd;
-
-	blk_execute_rq_nowait(NULL, rq, 0, nvme_nvm_end_io);
-
-	return 0;
-
-err_free_cmd:
-	kfree(cmd);
-	return ret;
-}
-
-static void *nvme_nvm_create_dma_pool(struct nvm_dev *nvmdev, char *name,
-					int size)
-{
-	struct nvme_ns *ns = nvmdev->q->queuedata;
-
-	return dma_pool_create(name, ns->ctrl->dev, size, PAGE_SIZE, 0);
-}
-
-static void nvme_nvm_destroy_dma_pool(void *pool)
-{
-	struct dma_pool *dma_pool = pool;
-
-	dma_pool_destroy(dma_pool);
-}
-
-static void *nvme_nvm_dev_dma_alloc(struct nvm_dev *dev, void *pool,
-				    gfp_t mem_flags, dma_addr_t *dma_handler)
-{
-	return dma_pool_alloc(pool, mem_flags, dma_handler);
-}
-
-static void nvme_nvm_dev_dma_free(void *pool, void *addr,
-							dma_addr_t dma_handler)
-{
-	dma_pool_free(pool, addr, dma_handler);
-}
-
-static struct nvm_dev_ops nvme_nvm_dev_ops = {
-	.identity		= nvme_nvm_identity,
-
-	.get_bb_tbl		= nvme_nvm_get_bb_tbl,
-	.set_bb_tbl		= nvme_nvm_set_bb_tbl,
-
-	.get_chk_meta		= nvme_nvm_get_chk_meta,
-
-	.submit_io		= nvme_nvm_submit_io,
-
-	.create_dma_pool	= nvme_nvm_create_dma_pool,
-	.destroy_dma_pool	= nvme_nvm_destroy_dma_pool,
-	.dev_dma_alloc		= nvme_nvm_dev_dma_alloc,
-	.dev_dma_free		= nvme_nvm_dev_dma_free,
-};
-
-static int nvme_nvm_submit_user_cmd(struct request_queue *q,
-				struct nvme_ns *ns,
-				struct nvme_nvm_command *vcmd,
-				void __user *ubuf, unsigned int bufflen,
-				void __user *meta_buf, unsigned int meta_len,
-				void __user *ppa_buf, unsigned int ppa_len,
-				u32 *result, u64 *status, unsigned int timeout)
-{
-	bool write = nvme_is_write((struct nvme_command *)vcmd);
-	struct nvm_dev *dev = ns->ndev;
-	struct request *rq;
-	struct bio *bio = NULL;
-	__le64 *ppa_list = NULL;
-	dma_addr_t ppa_dma;
-	__le64 *metadata = NULL;
-	dma_addr_t metadata_dma;
-	DECLARE_COMPLETION_ONSTACK(wait);
-	int ret = 0;
-
-	rq = nvme_alloc_request(q, (struct nvme_command *)vcmd, 0);
-	if (IS_ERR(rq)) {
-		ret = -ENOMEM;
-		goto err_cmd;
-	}
-
-	if (timeout)
-		rq->timeout = timeout;
-
-	if (ppa_buf && ppa_len) {
-		ppa_list = dma_pool_alloc(dev->dma_pool, GFP_KERNEL, &ppa_dma);
-		if (!ppa_list) {
-			ret = -ENOMEM;
-			goto err_rq;
-		}
-		if (copy_from_user(ppa_list, (void __user *)ppa_buf,
-						sizeof(u64) * (ppa_len + 1))) {
-			ret = -EFAULT;
-			goto err_ppa;
-		}
-		vcmd->ph_rw.spba = cpu_to_le64(ppa_dma);
-	} else {
-		vcmd->ph_rw.spba = cpu_to_le64((uintptr_t)ppa_buf);
-	}
-
-	if (ubuf && bufflen) {
-		ret = blk_rq_map_user(q, rq, NULL, ubuf, bufflen, GFP_KERNEL);
-		if (ret)
-			goto err_ppa;
-		bio = rq->bio;
-
-		if (meta_buf && meta_len) {
-			metadata = dma_pool_alloc(dev->dma_pool, GFP_KERNEL,
-								&metadata_dma);
-			if (!metadata) {
-				ret = -ENOMEM;
-				goto err_map;
-			}
-
-			if (write) {
-				if (copy_from_user(metadata,
-						(void __user *)meta_buf,
-						meta_len)) {
-					ret = -EFAULT;
-					goto err_meta;
-				}
-			}
-			vcmd->ph_rw.metadata = cpu_to_le64(metadata_dma);
-		}
-
-		bio_set_dev(bio, ns->disk->part0);
-	}
-
-	blk_execute_rq(NULL, rq, 0);
-
-	if (nvme_req(rq)->flags & NVME_REQ_CANCELLED)
-		ret = -EINTR;
-	else if (nvme_req(rq)->status & 0x7ff)
-		ret = -EIO;
-	if (result)
-		*result = nvme_req(rq)->status & 0x7ff;
-	if (status)
-		*status = le64_to_cpu(nvme_req(rq)->result.u64);
-
-	if (metadata && !ret && !write) {
-		if (copy_to_user(meta_buf, (void *)metadata, meta_len))
-			ret = -EFAULT;
-	}
-err_meta:
-	if (meta_buf && meta_len)
-		dma_pool_free(dev->dma_pool, metadata, metadata_dma);
-err_map:
-	if (bio)
-		blk_rq_unmap_user(bio);
-err_ppa:
-	if (ppa_buf && ppa_len)
-		dma_pool_free(dev->dma_pool, ppa_list, ppa_dma);
-err_rq:
-	blk_mq_free_request(rq);
-err_cmd:
-	return ret;
-}
-
-static int nvme_nvm_submit_vio(struct nvme_ns *ns,
-					struct nvm_user_vio __user *uvio)
-{
-	struct nvm_user_vio vio;
-	struct nvme_nvm_command c;
-	unsigned int length;
-	int ret;
-
-	if (copy_from_user(&vio, uvio, sizeof(vio)))
-		return -EFAULT;
-	if (vio.flags)
-		return -EINVAL;
-
-	memset(&c, 0, sizeof(c));
-	c.ph_rw.opcode = vio.opcode;
-	c.ph_rw.nsid = cpu_to_le32(ns->head->ns_id);
-	c.ph_rw.control = cpu_to_le16(vio.control);
-	c.ph_rw.length = cpu_to_le16(vio.nppas);
-
-	length = (vio.nppas + 1) << ns->lba_shift;
-
-	ret = nvme_nvm_submit_user_cmd(ns->queue, ns, &c,
-			(void __user *)(uintptr_t)vio.addr, length,
-			(void __user *)(uintptr_t)vio.metadata,
-							vio.metadata_len,
-			(void __user *)(uintptr_t)vio.ppa_list, vio.nppas,
-			&vio.result, &vio.status, 0);
-
-	if (ret && copy_to_user(uvio, &vio, sizeof(vio)))
-		return -EFAULT;
-
-	return ret;
-}
-
-static int nvme_nvm_user_vcmd(struct nvme_ns *ns, int admin,
-					struct nvm_passthru_vio __user *uvcmd)
-{
-	struct nvm_passthru_vio vcmd;
-	struct nvme_nvm_command c;
-	struct request_queue *q;
-	unsigned int timeout = 0;
-	int ret;
-
-	if (copy_from_user(&vcmd, uvcmd, sizeof(vcmd)))
-		return -EFAULT;
-	if ((vcmd.opcode != 0xF2) && (!capable(CAP_SYS_ADMIN)))
-		return -EACCES;
-	if (vcmd.flags)
-		return -EINVAL;
-
-	memset(&c, 0, sizeof(c));
-	c.common.opcode = vcmd.opcode;
-	c.common.nsid = cpu_to_le32(ns->head->ns_id);
-	c.common.cdw2[0] = cpu_to_le32(vcmd.cdw2);
-	c.common.cdw2[1] = cpu_to_le32(vcmd.cdw3);
-	/* cdw11-12 */
-	c.ph_rw.length = cpu_to_le16(vcmd.nppas);
-	c.ph_rw.control  = cpu_to_le16(vcmd.control);
-	c.common.cdw13 = cpu_to_le32(vcmd.cdw13);
-	c.common.cdw14 = cpu_to_le32(vcmd.cdw14);
-	c.common.cdw15 = cpu_to_le32(vcmd.cdw15);
-
-	if (vcmd.timeout_ms)
-		timeout = msecs_to_jiffies(vcmd.timeout_ms);
-
-	q = admin ? ns->ctrl->admin_q : ns->queue;
-
-	ret = nvme_nvm_submit_user_cmd(q, ns,
-			(struct nvme_nvm_command *)&c,
-			(void __user *)(uintptr_t)vcmd.addr, vcmd.data_len,
-			(void __user *)(uintptr_t)vcmd.metadata,
-							vcmd.metadata_len,
-			(void __user *)(uintptr_t)vcmd.ppa_list, vcmd.nppas,
-			&vcmd.result, &vcmd.status, timeout);
-
-	if (ret && copy_to_user(uvcmd, &vcmd, sizeof(vcmd)))
-		return -EFAULT;
-
-	return ret;
-}
-
-int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, void __user *argp)
-{
-	switch (cmd) {
-	case NVME_NVM_IOCTL_ADMIN_VIO:
-		return nvme_nvm_user_vcmd(ns, 1, argp);
-	case NVME_NVM_IOCTL_IO_VIO:
-		return nvme_nvm_user_vcmd(ns, 0, argp);
-	case NVME_NVM_IOCTL_SUBMIT_VIO:
-		return nvme_nvm_submit_vio(ns, argp);
-	default:
-		return -ENOTTY;
-	}
-}
-
-int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node)
-{
-	struct request_queue *q = ns->queue;
-	struct nvm_dev *dev;
-	struct nvm_geo *geo;
-
-	_nvme_nvm_check_size();
-
-	dev = nvm_alloc_dev(node);
-	if (!dev)
-		return -ENOMEM;
-
-	/* Note that csecs and sos will be overridden if it is a 1.2 drive. */
-	geo = &dev->geo;
-	geo->csecs = 1 << ns->lba_shift;
-	geo->sos = ns->ms;
-	if (ns->features & NVME_NS_EXT_LBAS)
-		geo->ext = true;
-	else
-		geo->ext = false;
-	geo->mdts = ns->ctrl->max_hw_sectors;
-
-	dev->q = q;
-	memcpy(dev->name, disk_name, DISK_NAME_LEN);
-	dev->ops = &nvme_nvm_dev_ops;
-	dev->private_data = ns;
-	ns->ndev = dev;
-
-	return nvm_register(dev);
-}
-
-void nvme_nvm_unregister(struct nvme_ns *ns)
-{
-	nvm_unregister(ns->ndev);
-}
-
-static ssize_t nvm_dev_attr_show(struct device *dev,
-		struct device_attribute *dattr, char *page)
-{
-	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
-	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_geo *geo = &ndev->geo;
-	struct attribute *attr;
-
-	if (!ndev)
-		return 0;
-
-	attr = &dattr->attr;
-
-	if (strcmp(attr->name, "version") == 0) {
-		if (geo->major_ver_id == 1)
-			return scnprintf(page, PAGE_SIZE, "%u\n",
-						geo->major_ver_id);
-		else
-			return scnprintf(page, PAGE_SIZE, "%u.%u\n",
-						geo->major_ver_id,
-						geo->minor_ver_id);
-	} else if (strcmp(attr->name, "capabilities") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->cap);
-	} else if (strcmp(attr->name, "read_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdt);
-	} else if (strcmp(attr->name, "read_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->trdm);
-	} else {
-		return scnprintf(page,
-				 PAGE_SIZE,
-				 "Unhandled attr(%s) in `%s`\n",
-				 attr->name, __func__);
-	}
-}
-
-static ssize_t nvm_dev_attr_show_ppaf(struct nvm_addrf_12 *ppaf, char *page)
-{
-	return scnprintf(page, PAGE_SIZE,
-		"0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
-				ppaf->ch_offset, ppaf->ch_len,
-				ppaf->lun_offset, ppaf->lun_len,
-				ppaf->pln_offset, ppaf->pln_len,
-				ppaf->blk_offset, ppaf->blk_len,
-				ppaf->pg_offset, ppaf->pg_len,
-				ppaf->sec_offset, ppaf->sec_len);
-}
-
-static ssize_t nvm_dev_attr_show_12(struct device *dev,
-		struct device_attribute *dattr, char *page)
-{
-	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
-	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_geo *geo = &ndev->geo;
-	struct attribute *attr;
-
-	if (!ndev)
-		return 0;
-
-	attr = &dattr->attr;
-
-	if (strcmp(attr->name, "vendor_opcode") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->vmnt);
-	} else if (strcmp(attr->name, "device_mode") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->dom);
-	/* kept for compatibility */
-	} else if (strcmp(attr->name, "media_manager") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%s\n", "gennvm");
-	} else if (strcmp(attr->name, "ppa_format") == 0) {
-		return nvm_dev_attr_show_ppaf((void *)&geo->addrf, page);
-	} else if (strcmp(attr->name, "media_type") == 0) {	/* u8 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->mtype);
-	} else if (strcmp(attr->name, "flash_media_type") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->fmtype);
-	} else if (strcmp(attr->name, "num_channels") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
-	} else if (strcmp(attr->name, "num_luns") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
-	} else if (strcmp(attr->name, "num_planes") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pln);
-	} else if (strcmp(attr->name, "num_blocks") == 0) {	/* u16 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
-	} else if (strcmp(attr->name, "num_pages") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_pg);
-	} else if (strcmp(attr->name, "page_size") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->fpg_sz);
-	} else if (strcmp(attr->name, "hw_sector_size") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->csecs);
-	} else if (strcmp(attr->name, "oob_sector_size") == 0) {/* u32 */
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->sos);
-	} else if (strcmp(attr->name, "prog_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
-	} else if (strcmp(attr->name, "prog_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
-	} else if (strcmp(attr->name, "erase_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
-	} else if (strcmp(attr->name, "erase_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
-	} else if (strcmp(attr->name, "multiplane_modes") == 0) {
-		return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mpos);
-	} else if (strcmp(attr->name, "media_capabilities") == 0) {
-		return scnprintf(page, PAGE_SIZE, "0x%08x\n", geo->mccap);
-	} else if (strcmp(attr->name, "max_phys_secs") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", NVM_MAX_VLBA);
-	} else {
-		return scnprintf(page, PAGE_SIZE,
-			"Unhandled attr(%s) in `%s`\n",
-			attr->name, __func__);
-	}
-}
-
-static ssize_t nvm_dev_attr_show_20(struct device *dev,
-		struct device_attribute *dattr, char *page)
-{
-	struct nvme_ns *ns = nvme_get_ns_from_dev(dev);
-	struct nvm_dev *ndev = ns->ndev;
-	struct nvm_geo *geo = &ndev->geo;
-	struct attribute *attr;
-
-	if (!ndev)
-		return 0;
-
-	attr = &dattr->attr;
-
-	if (strcmp(attr->name, "groups") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_ch);
-	} else if (strcmp(attr->name, "punits") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_lun);
-	} else if (strcmp(attr->name, "chunks") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->num_chk);
-	} else if (strcmp(attr->name, "clba") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->clba);
-	} else if (strcmp(attr->name, "ws_min") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_min);
-	} else if (strcmp(attr->name, "ws_opt") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->ws_opt);
-	} else if (strcmp(attr->name, "maxoc") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxoc);
-	} else if (strcmp(attr->name, "maxocpu") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->maxocpu);
-	} else if (strcmp(attr->name, "mw_cunits") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->mw_cunits);
-	} else if (strcmp(attr->name, "write_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprt);
-	} else if (strcmp(attr->name, "write_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tprm);
-	} else if (strcmp(attr->name, "reset_typ") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbet);
-	} else if (strcmp(attr->name, "reset_max") == 0) {
-		return scnprintf(page, PAGE_SIZE, "%u\n", geo->tbem);
-	} else {
-		return scnprintf(page, PAGE_SIZE,
-			"Unhandled attr(%s) in `%s`\n",
-			attr->name, __func__);
-	}
-}
-
-#define NVM_DEV_ATTR_RO(_name)					\
-	DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show, NULL)
-#define NVM_DEV_ATTR_12_RO(_name)					\
-	DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_12, NULL)
-#define NVM_DEV_ATTR_20_RO(_name)					\
-	DEVICE_ATTR(_name, S_IRUGO, nvm_dev_attr_show_20, NULL)
-
-/* general attributes */
-static NVM_DEV_ATTR_RO(version);
-static NVM_DEV_ATTR_RO(capabilities);
-
-static NVM_DEV_ATTR_RO(read_typ);
-static NVM_DEV_ATTR_RO(read_max);
-
-/* 1.2 values */
-static NVM_DEV_ATTR_12_RO(vendor_opcode);
-static NVM_DEV_ATTR_12_RO(device_mode);
-static NVM_DEV_ATTR_12_RO(ppa_format);
-static NVM_DEV_ATTR_12_RO(media_manager);
-static NVM_DEV_ATTR_12_RO(media_type);
-static NVM_DEV_ATTR_12_RO(flash_media_type);
-static NVM_DEV_ATTR_12_RO(num_channels);
-static NVM_DEV_ATTR_12_RO(num_luns);
-static NVM_DEV_ATTR_12_RO(num_planes);
-static NVM_DEV_ATTR_12_RO(num_blocks);
-static NVM_DEV_ATTR_12_RO(num_pages);
-static NVM_DEV_ATTR_12_RO(page_size);
-static NVM_DEV_ATTR_12_RO(hw_sector_size);
-static NVM_DEV_ATTR_12_RO(oob_sector_size);
-static NVM_DEV_ATTR_12_RO(prog_typ);
-static NVM_DEV_ATTR_12_RO(prog_max);
-static NVM_DEV_ATTR_12_RO(erase_typ);
-static NVM_DEV_ATTR_12_RO(erase_max);
-static NVM_DEV_ATTR_12_RO(multiplane_modes);
-static NVM_DEV_ATTR_12_RO(media_capabilities);
-static NVM_DEV_ATTR_12_RO(max_phys_secs);
-
-/* 2.0 values */
-static NVM_DEV_ATTR_20_RO(groups);
-static NVM_DEV_ATTR_20_RO(punits);
-static NVM_DEV_ATTR_20_RO(chunks);
-static NVM_DEV_ATTR_20_RO(clba);
-static NVM_DEV_ATTR_20_RO(ws_min);
-static NVM_DEV_ATTR_20_RO(ws_opt);
-static NVM_DEV_ATTR_20_RO(maxoc);
-static NVM_DEV_ATTR_20_RO(maxocpu);
-static NVM_DEV_ATTR_20_RO(mw_cunits);
-static NVM_DEV_ATTR_20_RO(write_typ);
-static NVM_DEV_ATTR_20_RO(write_max);
-static NVM_DEV_ATTR_20_RO(reset_typ);
-static NVM_DEV_ATTR_20_RO(reset_max);
-
-static struct attribute *nvm_dev_attrs[] = {
-	/* version agnostic attrs */
-	&dev_attr_version.attr,
-	&dev_attr_capabilities.attr,
-	&dev_attr_read_typ.attr,
-	&dev_attr_read_max.attr,
-
-	/* 1.2 attrs */
-	&dev_attr_vendor_opcode.attr,
-	&dev_attr_device_mode.attr,
-	&dev_attr_media_manager.attr,
-	&dev_attr_ppa_format.attr,
-	&dev_attr_media_type.attr,
-	&dev_attr_flash_media_type.attr,
-	&dev_attr_num_channels.attr,
-	&dev_attr_num_luns.attr,
-	&dev_attr_num_planes.attr,
-	&dev_attr_num_blocks.attr,
-	&dev_attr_num_pages.attr,
-	&dev_attr_page_size.attr,
-	&dev_attr_hw_sector_size.attr,
-	&dev_attr_oob_sector_size.attr,
-	&dev_attr_prog_typ.attr,
-	&dev_attr_prog_max.attr,
-	&dev_attr_erase_typ.attr,
-	&dev_attr_erase_max.attr,
-	&dev_attr_multiplane_modes.attr,
-	&dev_attr_media_capabilities.attr,
-	&dev_attr_max_phys_secs.attr,
-
-	/* 2.0 attrs */
-	&dev_attr_groups.attr,
-	&dev_attr_punits.attr,
-	&dev_attr_chunks.attr,
-	&dev_attr_clba.attr,
-	&dev_attr_ws_min.attr,
-	&dev_attr_ws_opt.attr,
-	&dev_attr_maxoc.attr,
-	&dev_attr_maxocpu.attr,
-	&dev_attr_mw_cunits.attr,
-
-	&dev_attr_write_typ.attr,
-	&dev_attr_write_max.attr,
-	&dev_attr_reset_typ.attr,
-	&dev_attr_reset_max.attr,
-
-	NULL,
-};
-
-static umode_t nvm_dev_attrs_visible(struct kobject *kobj,
-				     struct attribute *attr, int index)
-{
-	struct device *dev = kobj_to_dev(kobj);
-	struct gendisk *disk = dev_to_disk(dev);
-	struct nvme_ns *ns = disk->private_data;
-	struct nvm_dev *ndev = ns->ndev;
-	struct device_attribute *dev_attr =
-		container_of(attr, typeof(*dev_attr), attr);
-
-	if (!ndev)
-		return 0;
-
-	if (dev_attr->show == nvm_dev_attr_show)
-		return attr->mode;
-
-	switch (ndev->geo.major_ver_id) {
-	case 1:
-		if (dev_attr->show == nvm_dev_attr_show_12)
-			return attr->mode;
-		break;
-	case 2:
-		if (dev_attr->show == nvm_dev_attr_show_20)
-			return attr->mode;
-		break;
-	}
-
-	return 0;
-}
-
-const struct attribute_group nvme_nvm_attr_group = {
-	.name		= "lightnvm",
-	.attrs		= nvm_dev_attrs,
-	.is_visible	= nvm_dev_attrs_visible,
-};
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 5cd1fa3b8464..ab803f91ace1 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -11,7 +11,6 @@
 #include <linux/pci.h>
 #include <linux/kref.h>
 #include <linux/blk-mq.h>
-#include <linux/lightnvm.h>
 #include <linux/sed-opal.h>
 #include <linux/fault-inject.h>
 #include <linux/rcupdate.h>
@@ -93,11 +92,6 @@ enum nvme_quirks {
 	NVME_QUIRK_NO_DEEPEST_PS		= (1 << 5),
 
 	/*
-	 * Supports the LighNVM command set if indicated in vs[1].
-	 */
-	NVME_QUIRK_LIGHTNVM			= (1 << 6),
-
-	/*
 	 * Set MEDIUM priority on SQ creation
 	 */
 	NVME_QUIRK_MEDIUM_PRIO_SQ		= (1 << 7),
@@ -823,26 +817,6 @@ static inline int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf)
 }
 #endif
 
-#ifdef CONFIG_NVM
-int nvme_nvm_register(struct nvme_ns *ns, char *disk_name, int node);
-void nvme_nvm_unregister(struct nvme_ns *ns);
-extern const struct attribute_group nvme_nvm_attr_group;
-int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd, void __user *argp);
-#else
-static inline int nvme_nvm_register(struct nvme_ns *ns, char *disk_name,
-				    int node)
-{
-	return 0;
-}
-
-static inline void nvme_nvm_unregister(struct nvme_ns *ns) {};
-static inline int nvme_nvm_ioctl(struct nvme_ns *ns, unsigned int cmd,
-		void __user *argp)
-{
-	return -ENOTTY;
-}
-#endif /* CONFIG_NVM */
-
 static inline struct nvme_ns *nvme_get_ns_from_dev(struct device *dev)
 {
 	return dev_to_disk(dev)->private_data;
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 51852085239e..db7a9bee2014 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -3243,12 +3243,6 @@ static const struct pci_device_id nvme_id_table[] = {
 	{ PCI_DEVICE(0x1b4b, 0x1092),	/* Lexar 256 GB SSD */
 		.driver_data = NVME_QUIRK_NO_NS_DESC_LIST |
 				NVME_QUIRK_IGNORE_DEV_SUBNQN, },
-	{ PCI_DEVICE(0x1d1d, 0x1f1f),	/* LighNVM qemu device */
-		.driver_data = NVME_QUIRK_LIGHTNVM, },
-	{ PCI_DEVICE(0x1d1d, 0x2807),	/* CNEX WL */
-		.driver_data = NVME_QUIRK_LIGHTNVM, },
-	{ PCI_DEVICE(0x1d1d, 0x2601),	/* CNEX Granby */
-		.driver_data = NVME_QUIRK_LIGHTNVM, },
 	{ PCI_DEVICE(0x10ec, 0x5762),   /* ADATA SX6000LNP */
 		.driver_data = NVME_QUIRK_IGNORE_DEV_SUBNQN, },
 	{ PCI_DEVICE(0x1cc1, 0x8201),   /* ADATA SX8200PNP 512GB */