These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 0 insertions, 3070 deletions

diff --git a/kernel/drivers/block/nvme-scsi.c b/kernel/drivers/block/nvme-scsi.c
deleted file mode 100644
index 44f2514fb..000000000
--- a/kernel/drivers/block/nvme-scsi.c
+++ /dev/null
@@ -1,3070 +0,0 @@
-/*
- * NVM Express device driver
- * Copyright (c) 2011-2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- */
-
-/*
- * Refer to the SCSI-NVMe Translation spec for details on how
- * each command is translated.
- */
-
-#include <linux/nvme.h>
-#include <linux/bio.h>
-#include <linux/bitops.h>
-#include <linux/blkdev.h>
-#include <linux/compat.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/genhd.h>
-#include <linux/idr.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kdev_t.h>
-#include <linux/kthread.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/pci.h>
-#include <linux/poison.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <scsi/sg.h>
-#include <scsi/scsi.h>
-
-
-static int sg_version_num = 30534;	/* 2 digits for each component */
-
-#define SNTI_TRANSLATION_SUCCESS			0
-#define SNTI_INTERNAL_ERROR				1
-
-/* VPD Page Codes */
-#define VPD_SUPPORTED_PAGES				0x00
-#define VPD_SERIAL_NUMBER				0x80
-#define VPD_DEVICE_IDENTIFIERS				0x83
-#define VPD_EXTENDED_INQUIRY				0x86
-#define VPD_BLOCK_LIMITS				0xB0
-#define VPD_BLOCK_DEV_CHARACTERISTICS			0xB1
-
-/* CDB offsets */
-#define REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET		6
-#define REPORT_LUNS_SR_OFFSET				2
-#define READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET		10
-#define REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET		4
-#define REQUEST_SENSE_DESC_OFFSET			1
-#define REQUEST_SENSE_DESC_MASK				0x01
-#define DESCRIPTOR_FORMAT_SENSE_DATA_TYPE		1
-#define INQUIRY_EVPD_BYTE_OFFSET			1
-#define INQUIRY_PAGE_CODE_BYTE_OFFSET			2
-#define INQUIRY_EVPD_BIT_MASK				1
-#define INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET		3
-#define START_STOP_UNIT_CDB_IMMED_OFFSET		1
-#define START_STOP_UNIT_CDB_IMMED_MASK			0x1
-#define START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET	3
-#define START_STOP_UNIT_CDB_POWER_COND_MOD_MASK		0xF
-#define START_STOP_UNIT_CDB_POWER_COND_OFFSET		4
-#define START_STOP_UNIT_CDB_POWER_COND_MASK		0xF0
-#define START_STOP_UNIT_CDB_NO_FLUSH_OFFSET		4
-#define START_STOP_UNIT_CDB_NO_FLUSH_MASK		0x4
-#define START_STOP_UNIT_CDB_START_OFFSET		4
-#define START_STOP_UNIT_CDB_START_MASK			0x1
-#define WRITE_BUFFER_CDB_MODE_OFFSET			1
-#define WRITE_BUFFER_CDB_MODE_MASK			0x1F
-#define WRITE_BUFFER_CDB_BUFFER_ID_OFFSET		2
-#define WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET		3
-#define WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET	6
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET		1
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK		0xC0
-#define FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT		6
-#define FORMAT_UNIT_CDB_LONG_LIST_OFFSET		1
-#define FORMAT_UNIT_CDB_LONG_LIST_MASK			0x20
-#define FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET		1
-#define FORMAT_UNIT_CDB_FORMAT_DATA_MASK		0x10
-#define FORMAT_UNIT_SHORT_PARM_LIST_LEN			4
-#define FORMAT_UNIT_LONG_PARM_LIST_LEN			8
-#define FORMAT_UNIT_PROT_INT_OFFSET			3
-#define FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET		0
-#define FORMAT_UNIT_PROT_FIELD_USAGE_MASK		0x07
-#define UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET		7
-
-/* Misc. defines */
-#define NIBBLE_SHIFT					4
-#define FIXED_SENSE_DATA				0x70
-#define DESC_FORMAT_SENSE_DATA				0x72
-#define FIXED_SENSE_DATA_ADD_LENGTH			10
-#define LUN_ENTRY_SIZE					8
-#define LUN_DATA_HEADER_SIZE				8
-#define ALL_LUNS_RETURNED				0x02
-#define ALL_WELL_KNOWN_LUNS_RETURNED			0x01
-#define RESTRICTED_LUNS_RETURNED			0x00
-#define NVME_POWER_STATE_START_VALID			0x00
-#define NVME_POWER_STATE_ACTIVE				0x01
-#define NVME_POWER_STATE_IDLE				0x02
-#define NVME_POWER_STATE_STANDBY			0x03
-#define NVME_POWER_STATE_LU_CONTROL			0x07
-#define POWER_STATE_0					0
-#define POWER_STATE_1					1
-#define POWER_STATE_2					2
-#define POWER_STATE_3					3
-#define DOWNLOAD_SAVE_ACTIVATE				0x05
-#define DOWNLOAD_SAVE_DEFER_ACTIVATE			0x0E
-#define ACTIVATE_DEFERRED_MICROCODE			0x0F
-#define FORMAT_UNIT_IMMED_MASK				0x2
-#define FORMAT_UNIT_IMMED_OFFSET			1
-#define KELVIN_TEMP_FACTOR				273
-#define FIXED_FMT_SENSE_DATA_SIZE			18
-#define DESC_FMT_SENSE_DATA_SIZE			8
-
-/* SCSI/NVMe defines and bit masks */
-#define INQ_STANDARD_INQUIRY_PAGE			0x00
-#define INQ_SUPPORTED_VPD_PAGES_PAGE			0x00
-#define INQ_UNIT_SERIAL_NUMBER_PAGE			0x80
-#define INQ_DEVICE_IDENTIFICATION_PAGE			0x83
-#define INQ_EXTENDED_INQUIRY_DATA_PAGE			0x86
-#define INQ_BDEV_LIMITS_PAGE				0xB0
-#define INQ_BDEV_CHARACTERISTICS_PAGE			0xB1
-#define INQ_SERIAL_NUMBER_LENGTH			0x14
-#define INQ_NUM_SUPPORTED_VPD_PAGES			6
-#define VERSION_SPC_4					0x06
-#define ACA_UNSUPPORTED					0
-#define STANDARD_INQUIRY_LENGTH				36
-#define ADDITIONAL_STD_INQ_LENGTH			31
-#define EXTENDED_INQUIRY_DATA_PAGE_LENGTH		0x3C
-#define RESERVED_FIELD					0
-
-/* SCSI READ/WRITE Defines */
-#define IO_CDB_WP_MASK					0xE0
-#define IO_CDB_WP_SHIFT					5
-#define IO_CDB_FUA_MASK					0x8
-#define IO_6_CDB_LBA_OFFSET				0
-#define IO_6_CDB_LBA_MASK				0x001FFFFF
-#define IO_6_CDB_TX_LEN_OFFSET				4
-#define IO_6_DEFAULT_TX_LEN				256
-#define IO_10_CDB_LBA_OFFSET				2
-#define IO_10_CDB_TX_LEN_OFFSET				7
-#define IO_10_CDB_WP_OFFSET				1
-#define IO_10_CDB_FUA_OFFSET				1
-#define IO_12_CDB_LBA_OFFSET				2
-#define IO_12_CDB_TX_LEN_OFFSET				6
-#define IO_12_CDB_WP_OFFSET				1
-#define IO_12_CDB_FUA_OFFSET				1
-#define IO_16_CDB_FUA_OFFSET				1
-#define IO_16_CDB_WP_OFFSET				1
-#define IO_16_CDB_LBA_OFFSET				2
-#define IO_16_CDB_TX_LEN_OFFSET				10
-
-/* Mode Sense/Select defines */
-#define MODE_PAGE_INFO_EXCEP				0x1C
-#define MODE_PAGE_CACHING				0x08
-#define MODE_PAGE_CONTROL				0x0A
-#define MODE_PAGE_POWER_CONDITION			0x1A
-#define MODE_PAGE_RETURN_ALL				0x3F
-#define MODE_PAGE_BLK_DES_LEN				0x08
-#define MODE_PAGE_LLBAA_BLK_DES_LEN			0x10
-#define MODE_PAGE_CACHING_LEN				0x14
-#define MODE_PAGE_CONTROL_LEN				0x0C
-#define MODE_PAGE_POW_CND_LEN				0x28
-#define MODE_PAGE_INF_EXC_LEN				0x0C
-#define MODE_PAGE_ALL_LEN				0x54
-#define MODE_SENSE6_MPH_SIZE				4
-#define MODE_SENSE6_ALLOC_LEN_OFFSET			4
-#define MODE_SENSE_PAGE_CONTROL_OFFSET			2
-#define MODE_SENSE_PAGE_CONTROL_MASK			0xC0
-#define MODE_SENSE_PAGE_CODE_OFFSET			2
-#define MODE_SENSE_PAGE_CODE_MASK			0x3F
-#define MODE_SENSE_LLBAA_OFFSET				1
-#define MODE_SENSE_LLBAA_MASK				0x10
-#define MODE_SENSE_LLBAA_SHIFT				4
-#define MODE_SENSE_DBD_OFFSET				1
-#define MODE_SENSE_DBD_MASK				8
-#define MODE_SENSE_DBD_SHIFT				3
-#define MODE_SENSE10_MPH_SIZE				8
-#define MODE_SENSE10_ALLOC_LEN_OFFSET			7
-#define MODE_SELECT_CDB_PAGE_FORMAT_OFFSET		1
-#define MODE_SELECT_CDB_SAVE_PAGES_OFFSET		1
-#define MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET	4
-#define MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET	7
-#define MODE_SELECT_CDB_PAGE_FORMAT_MASK		0x10
-#define MODE_SELECT_CDB_SAVE_PAGES_MASK			0x1
-#define MODE_SELECT_6_BD_OFFSET				3
-#define MODE_SELECT_10_BD_OFFSET			6
-#define MODE_SELECT_10_LLBAA_OFFSET			4
-#define MODE_SELECT_10_LLBAA_MASK			1
-#define MODE_SELECT_6_MPH_SIZE				4
-#define MODE_SELECT_10_MPH_SIZE				8
-#define CACHING_MODE_PAGE_WCE_MASK			0x04
-#define MODE_SENSE_BLK_DESC_ENABLED			0
-#define MODE_SENSE_BLK_DESC_COUNT			1
-#define MODE_SELECT_PAGE_CODE_MASK			0x3F
-#define SHORT_DESC_BLOCK				8
-#define LONG_DESC_BLOCK					16
-#define MODE_PAGE_POW_CND_LEN_FIELD			0x26
-#define MODE_PAGE_INF_EXC_LEN_FIELD			0x0A
-#define MODE_PAGE_CACHING_LEN_FIELD			0x12
-#define MODE_PAGE_CONTROL_LEN_FIELD			0x0A
-#define MODE_SENSE_PC_CURRENT_VALUES			0
-
-/* Log Sense defines */
-#define LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE		0x00
-#define LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH		0x07
-#define LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE		0x2F
-#define LOG_PAGE_TEMPERATURE_PAGE			0x0D
-#define LOG_SENSE_CDB_SP_OFFSET				1
-#define LOG_SENSE_CDB_SP_NOT_ENABLED			0
-#define LOG_SENSE_CDB_PC_OFFSET				2
-#define LOG_SENSE_CDB_PC_MASK				0xC0
-#define LOG_SENSE_CDB_PC_SHIFT				6
-#define LOG_SENSE_CDB_PC_CUMULATIVE_VALUES		1
-#define LOG_SENSE_CDB_PAGE_CODE_MASK			0x3F
-#define LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET		7
-#define REMAINING_INFO_EXCP_PAGE_LENGTH			0x8
-#define LOG_INFO_EXCP_PAGE_LENGTH			0xC
-#define REMAINING_TEMP_PAGE_LENGTH			0xC
-#define LOG_TEMP_PAGE_LENGTH				0x10
-#define LOG_TEMP_UNKNOWN				0xFF
-#define SUPPORTED_LOG_PAGES_PAGE_LENGTH			0x3
-
-/* Read Capacity defines */
-#define READ_CAP_10_RESP_SIZE				8
-#define READ_CAP_16_RESP_SIZE				32
-
-/* NVMe Namespace and Command Defines */
-#define BYTES_TO_DWORDS					4
-#define NVME_MAX_FIRMWARE_SLOT				7
-
-/* Report LUNs defines */
-#define REPORT_LUNS_FIRST_LUN_OFFSET			8
-
-/* SCSI ADDITIONAL SENSE Codes */
-
-#define SCSI_ASC_NO_SENSE				0x00
-#define SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT		0x03
-#define SCSI_ASC_LUN_NOT_READY				0x04
-#define SCSI_ASC_WARNING				0x0B
-#define SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED		0x10
-#define SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED		0x10
-#define SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED		0x10
-#define SCSI_ASC_UNRECOVERED_READ_ERROR			0x11
-#define SCSI_ASC_MISCOMPARE_DURING_VERIFY		0x1D
-#define SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID		0x20
-#define SCSI_ASC_ILLEGAL_COMMAND			0x20
-#define SCSI_ASC_ILLEGAL_BLOCK				0x21
-#define SCSI_ASC_INVALID_CDB				0x24
-#define SCSI_ASC_INVALID_LUN				0x25
-#define SCSI_ASC_INVALID_PARAMETER			0x26
-#define SCSI_ASC_FORMAT_COMMAND_FAILED			0x31
-#define SCSI_ASC_INTERNAL_TARGET_FAILURE		0x44
-
-/* SCSI ADDITIONAL SENSE Code Qualifiers */
-
-#define SCSI_ASCQ_CAUSE_NOT_REPORTABLE			0x00
-#define SCSI_ASCQ_FORMAT_COMMAND_FAILED			0x01
-#define SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED		0x01
-#define SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED		0x02
-#define SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED		0x03
-#define SCSI_ASCQ_FORMAT_IN_PROGRESS			0x04
-#define SCSI_ASCQ_POWER_LOSS_EXPECTED			0x08
-#define SCSI_ASCQ_INVALID_LUN_ID			0x09
-
-/**
- * DEVICE_SPECIFIC_PARAMETER in mode parameter header (see sbc2r16) to
- * enable DPOFUA support type 0x10 value.
- */
-#define DEVICE_SPECIFIC_PARAMETER			0
-#define VPD_ID_DESCRIPTOR_LENGTH sizeof(VPD_IDENTIFICATION_DESCRIPTOR)
-
-/* MACROs to extract information from CDBs */
-
-#define GET_OPCODE(cdb)		cdb[0]
-
-#define GET_U8_FROM_CDB(cdb, index) (cdb[index] << 0)
-
-#define GET_U16_FROM_CDB(cdb, index) ((cdb[index] << 8) | (cdb[index + 1] << 0))
-
-#define GET_U24_FROM_CDB(cdb, index) ((cdb[index] << 16) | \
-(cdb[index + 1] <<  8) | \
-(cdb[index + 2] <<  0))
-
-#define GET_U32_FROM_CDB(cdb, index) ((cdb[index] << 24) | \
-(cdb[index + 1] << 16) | \
-(cdb[index + 2] <<  8) | \
-(cdb[index + 3] <<  0))
-
-#define GET_U64_FROM_CDB(cdb, index) ((((u64)cdb[index]) << 56) | \
-(((u64)cdb[index + 1]) << 48) | \
-(((u64)cdb[index + 2]) << 40) | \
-(((u64)cdb[index + 3]) << 32) | \
-(((u64)cdb[index + 4]) << 24) | \
-(((u64)cdb[index + 5]) << 16) | \
-(((u64)cdb[index + 6]) <<  8) | \
-(((u64)cdb[index + 7]) <<  0))
-
-/* Inquiry Helper Macros */
-#define GET_INQ_EVPD_BIT(cdb) \
-((GET_U8_FROM_CDB(cdb, INQUIRY_EVPD_BYTE_OFFSET) &		\
-INQUIRY_EVPD_BIT_MASK) ? 1 : 0)
-
-#define GET_INQ_PAGE_CODE(cdb)					\
-(GET_U8_FROM_CDB(cdb, INQUIRY_PAGE_CODE_BYTE_OFFSET))
-
-#define GET_INQ_ALLOC_LENGTH(cdb)				\
-(GET_U16_FROM_CDB(cdb, INQUIRY_CDB_ALLOCATION_LENGTH_OFFSET))
-
-/* Report LUNs Helper Macros */
-#define GET_REPORT_LUNS_ALLOC_LENGTH(cdb)			\
-(GET_U32_FROM_CDB(cdb, REPORT_LUNS_CDB_ALLOC_LENGTH_OFFSET))
-
-/* Read Capacity Helper Macros */
-#define GET_READ_CAP_16_ALLOC_LENGTH(cdb)			\
-(GET_U32_FROM_CDB(cdb, READ_CAP_16_CDB_ALLOC_LENGTH_OFFSET))
-
-#define IS_READ_CAP_16(cdb)					\
-((cdb[0] == SERVICE_ACTION_IN_16 && cdb[1] == SAI_READ_CAPACITY_16) ? 1 : 0)
-
-/* Request Sense Helper Macros */
-#define GET_REQUEST_SENSE_ALLOC_LENGTH(cdb)			\
-(GET_U8_FROM_CDB(cdb, REQUEST_SENSE_CDB_ALLOC_LENGTH_OFFSET))
-
-/* Mode Sense Helper Macros */
-#define GET_MODE_SENSE_DBD(cdb)					\
-((GET_U8_FROM_CDB(cdb, MODE_SENSE_DBD_OFFSET) & MODE_SENSE_DBD_MASK) >>	\
-MODE_SENSE_DBD_SHIFT)
-
-#define GET_MODE_SENSE_LLBAA(cdb)				\
-((GET_U8_FROM_CDB(cdb, MODE_SENSE_LLBAA_OFFSET) &		\
-MODE_SENSE_LLBAA_MASK) >> MODE_SENSE_LLBAA_SHIFT)
-
-#define GET_MODE_SENSE_MPH_SIZE(cdb10)				\
-(cdb10 ? MODE_SENSE10_MPH_SIZE : MODE_SENSE6_MPH_SIZE)
-
-
-/* Struct to gather data that needs to be extracted from a SCSI CDB.
-   Not conforming to any particular CDB variant, but compatible with all. */
-
-struct nvme_trans_io_cdb {
-	u8 fua;
-	u8 prot_info;
-	u64 lba;
-	u32 xfer_len;
-};
-
-
-/* Internal Helper Functions */
-
-
-/* Copy data to userspace memory */
-
-static int nvme_trans_copy_to_user(struct sg_io_hdr *hdr, void *from,
-								unsigned long n)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	unsigned long not_copied;
-	int i;
-	void *index = from;
-	size_t remaining = n;
-	size_t xfer_len;
-
-	if (hdr->iovec_count > 0) {
-		struct sg_iovec sgl;
-
-		for (i = 0; i < hdr->iovec_count; i++) {
-			not_copied = copy_from_user(&sgl, hdr->dxferp +
-						i * sizeof(struct sg_iovec),
-						sizeof(struct sg_iovec));
-			if (not_copied)
-				return -EFAULT;
-			xfer_len = min(remaining, sgl.iov_len);
-			not_copied = copy_to_user(sgl.iov_base, index,
-								xfer_len);
-			if (not_copied) {
-				res = -EFAULT;
-				break;
-			}
-			index += xfer_len;
-			remaining -= xfer_len;
-			if (remaining == 0)
-				break;
-		}
-		return res;
-	}
-	not_copied = copy_to_user(hdr->dxferp, from, n);
-	if (not_copied)
-		res = -EFAULT;
-	return res;
-}
-
-/* Copy data from userspace memory */
-
-static int nvme_trans_copy_from_user(struct sg_io_hdr *hdr, void *to,
-								unsigned long n)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	unsigned long not_copied;
-	int i;
-	void *index = to;
-	size_t remaining = n;
-	size_t xfer_len;
-
-	if (hdr->iovec_count > 0) {
-		struct sg_iovec sgl;
-
-		for (i = 0; i < hdr->iovec_count; i++) {
-			not_copied = copy_from_user(&sgl, hdr->dxferp +
-						i * sizeof(struct sg_iovec),
-						sizeof(struct sg_iovec));
-			if (not_copied)
-				return -EFAULT;
-			xfer_len = min(remaining, sgl.iov_len);
-			not_copied = copy_from_user(index, sgl.iov_base,
-								xfer_len);
-			if (not_copied) {
-				res = -EFAULT;
-				break;
-			}
-			index += xfer_len;
-			remaining -= xfer_len;
-			if (remaining == 0)
-				break;
-		}
-		return res;
-	}
-
-	not_copied = copy_from_user(to, hdr->dxferp, n);
-	if (not_copied)
-		res = -EFAULT;
-	return res;
-}
-
-/* Status/Sense Buffer Writeback */
-
-static int nvme_trans_completion(struct sg_io_hdr *hdr, u8 status, u8 sense_key,
-				 u8 asc, u8 ascq)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 xfer_len;
-	u8 resp[DESC_FMT_SENSE_DATA_SIZE];
-
-	if (scsi_status_is_good(status)) {
-		hdr->status = SAM_STAT_GOOD;
-		hdr->masked_status = GOOD;
-		hdr->host_status = DID_OK;
-		hdr->driver_status = DRIVER_OK;
-		hdr->sb_len_wr = 0;
-	} else {
-		hdr->status = status;
-		hdr->masked_status = status >> 1;
-		hdr->host_status = DID_OK;
-		hdr->driver_status = DRIVER_OK;
-
-		memset(resp, 0, DESC_FMT_SENSE_DATA_SIZE);
-		resp[0] = DESC_FORMAT_SENSE_DATA;
-		resp[1] = sense_key;
-		resp[2] = asc;
-		resp[3] = ascq;
-
-		xfer_len = min_t(u8, hdr->mx_sb_len, DESC_FMT_SENSE_DATA_SIZE);
-		hdr->sb_len_wr = xfer_len;
-		if (copy_to_user(hdr->sbp, resp, xfer_len) > 0)
-			res = -EFAULT;
-	}
-
-	return res;
-}
-
-static int nvme_trans_status_code(struct sg_io_hdr *hdr, int nvme_sc)
-{
-	u8 status, sense_key, asc, ascq;
-	int res = SNTI_TRANSLATION_SUCCESS;
-
-	/* For non-nvme (Linux) errors, simply return the error code */
-	if (nvme_sc < 0)
-		return nvme_sc;
-
-	/* Mask DNR, More, and reserved fields */
-	nvme_sc &= 0x7FF;
-
-	switch (nvme_sc) {
-	/* Generic Command Status */
-	case NVME_SC_SUCCESS:
-		status = SAM_STAT_GOOD;
-		sense_key = NO_SENSE;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_INVALID_OPCODE:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_ILLEGAL_COMMAND;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_INVALID_FIELD:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_INVALID_CDB;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_DATA_XFER_ERROR:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_POWER_LOSS:
-		status = SAM_STAT_TASK_ABORTED;
-		sense_key = ABORTED_COMMAND;
-		asc = SCSI_ASC_WARNING;
-		ascq = SCSI_ASCQ_POWER_LOSS_EXPECTED;
-		break;
-	case NVME_SC_INTERNAL:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = HARDWARE_ERROR;
-		asc = SCSI_ASC_INTERNAL_TARGET_FAILURE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_ABORT_REQ:
-		status = SAM_STAT_TASK_ABORTED;
-		sense_key = ABORTED_COMMAND;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_ABORT_QUEUE:
-		status = SAM_STAT_TASK_ABORTED;
-		sense_key = ABORTED_COMMAND;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_FUSED_FAIL:
-		status = SAM_STAT_TASK_ABORTED;
-		sense_key = ABORTED_COMMAND;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_FUSED_MISSING:
-		status = SAM_STAT_TASK_ABORTED;
-		sense_key = ABORTED_COMMAND;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_INVALID_NS:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
-		ascq = SCSI_ASCQ_INVALID_LUN_ID;
-		break;
-	case NVME_SC_LBA_RANGE:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_ILLEGAL_BLOCK;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_CAP_EXCEEDED:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_NS_NOT_READY:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = NOT_READY;
-		asc = SCSI_ASC_LUN_NOT_READY;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-
-	/* Command Specific Status */
-	case NVME_SC_INVALID_FORMAT:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_FORMAT_COMMAND_FAILED;
-		ascq = SCSI_ASCQ_FORMAT_COMMAND_FAILED;
-		break;
-	case NVME_SC_BAD_ATTRIBUTES:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_INVALID_CDB;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-
-	/* Media Errors */
-	case NVME_SC_WRITE_FAULT:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_PERIPHERAL_DEV_WRITE_FAULT;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_READ_ERROR:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_UNRECOVERED_READ_ERROR;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_GUARD_CHECK:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_LOG_BLOCK_GUARD_CHECK_FAILED;
-		ascq = SCSI_ASCQ_LOG_BLOCK_GUARD_CHECK_FAILED;
-		break;
-	case NVME_SC_APPTAG_CHECK:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_LOG_BLOCK_APPTAG_CHECK_FAILED;
-		ascq = SCSI_ASCQ_LOG_BLOCK_APPTAG_CHECK_FAILED;
-		break;
-	case NVME_SC_REFTAG_CHECK:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MEDIUM_ERROR;
-		asc = SCSI_ASC_LOG_BLOCK_REFTAG_CHECK_FAILED;
-		ascq = SCSI_ASCQ_LOG_BLOCK_REFTAG_CHECK_FAILED;
-		break;
-	case NVME_SC_COMPARE_FAILED:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = MISCOMPARE;
-		asc = SCSI_ASC_MISCOMPARE_DURING_VERIFY;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	case NVME_SC_ACCESS_DENIED:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_ACCESS_DENIED_INVALID_LUN_ID;
-		ascq = SCSI_ASCQ_INVALID_LUN_ID;
-		break;
-
-	/* Unspecified/Default */
-	case NVME_SC_CMDID_CONFLICT:
-	case NVME_SC_CMD_SEQ_ERROR:
-	case NVME_SC_CQ_INVALID:
-	case NVME_SC_QID_INVALID:
-	case NVME_SC_QUEUE_SIZE:
-	case NVME_SC_ABORT_LIMIT:
-	case NVME_SC_ABORT_MISSING:
-	case NVME_SC_ASYNC_LIMIT:
-	case NVME_SC_FIRMWARE_SLOT:
-	case NVME_SC_FIRMWARE_IMAGE:
-	case NVME_SC_INVALID_VECTOR:
-	case NVME_SC_INVALID_LOG_PAGE:
-	default:
-		status = SAM_STAT_CHECK_CONDITION;
-		sense_key = ILLEGAL_REQUEST;
-		asc = SCSI_ASC_NO_SENSE;
-		ascq = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		break;
-	}
-
-	res = nvme_trans_completion(hdr, status, sense_key, asc, ascq);
-
-	return res;
-}
-
-/* INQUIRY Helper Functions */
-
-static int nvme_trans_standard_inquiry_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *inq_response,
-					int alloc_len)
-{
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ns *id_ns;
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	int xfer_len;
-	u8 resp_data_format = 0x02;
-	u8 protect;
-	u8 cmdque = 0x01 << 1;
-	u8 fw_offset = sizeof(dev->firmware_rev);
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-				&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-
-	/* nvme ns identify - use DPS value for PROTECT field */
-	nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	/*
-	 * If nvme_sc was -ve, res will be -ve here.
-	 * If nvme_sc was +ve, the status would bace been translated, and res
-	 *  can only be 0 or -ve.
-	 *    - If 0 && nvme_sc > 0, then go into next if where res gets nvme_sc
-	 *    - If -ve, return because its a Linux error.
-	 */
-	if (res)
-		goto out_free;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_free;
-	}
-	id_ns = mem;
-	(id_ns->dps) ? (protect = 0x01) : (protect = 0);
-
-	memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
-	inq_response[2] = VERSION_SPC_4;
-	inq_response[3] = resp_data_format;	/*normaca=0 | hisup=0 */
-	inq_response[4] = ADDITIONAL_STD_INQ_LENGTH;
-	inq_response[5] = protect;	/* sccs=0 | acc=0 | tpgs=0 | pc3=0 */
-	inq_response[7] = cmdque;	/* wbus16=0 | sync=0 | vs=0 */
-	strncpy(&inq_response[8], "NVMe    ", 8);
-	strncpy(&inq_response[16], dev->model, 16);
-
-	while (dev->firmware_rev[fw_offset - 1] == ' ' && fw_offset > 4)
-		fw_offset--;
-	fw_offset -= 4;
-	strncpy(&inq_response[32], dev->firmware_rev + fw_offset, 4);
-
-	xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out_dma:
-	return res;
-}
-
-static int nvme_trans_supported_vpd_pages(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *inq_response,
-					int alloc_len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-
-	memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
-	inq_response[1] = INQ_SUPPORTED_VPD_PAGES_PAGE;   /* Page Code */
-	inq_response[3] = INQ_NUM_SUPPORTED_VPD_PAGES;    /* Page Length */
-	inq_response[4] = INQ_SUPPORTED_VPD_PAGES_PAGE;
-	inq_response[5] = INQ_UNIT_SERIAL_NUMBER_PAGE;
-	inq_response[6] = INQ_DEVICE_IDENTIFICATION_PAGE;
-	inq_response[7] = INQ_EXTENDED_INQUIRY_DATA_PAGE;
-	inq_response[8] = INQ_BDEV_CHARACTERISTICS_PAGE;
-	inq_response[9] = INQ_BDEV_LIMITS_PAGE;
-
-	xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
-	return res;
-}
-
-static int nvme_trans_unit_serial_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *inq_response,
-					int alloc_len)
-{
-	struct nvme_dev *dev = ns->dev;
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-
-	memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
-	inq_response[1] = INQ_UNIT_SERIAL_NUMBER_PAGE; /* Page Code */
-	inq_response[3] = INQ_SERIAL_NUMBER_LENGTH;    /* Page Length */
-	strncpy(&inq_response[4], dev->serial, INQ_SERIAL_NUMBER_LENGTH);
-
-	xfer_len = min(alloc_len, STANDARD_INQUIRY_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
-	return res;
-}
-
-static int nvme_trans_device_id_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					u8 *inq_response, int alloc_len)
-{
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	int xfer_len;
-	__be32 tmp_id = cpu_to_be32(ns->ns_id);
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-					&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-
-	memset(inq_response, 0, alloc_len);
-	inq_response[1] = INQ_DEVICE_IDENTIFICATION_PAGE;    /* Page Code */
-	if (readl(&dev->bar->vs) >= NVME_VS(1, 1)) {
-		struct nvme_id_ns *id_ns = mem;
-		void *eui = id_ns->eui64;
-		int len = sizeof(id_ns->eui64);
-
-		nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-		res = nvme_trans_status_code(hdr, nvme_sc);
-		if (res)
-			goto out_free;
-		if (nvme_sc) {
-			res = nvme_sc;
-			goto out_free;
-		}
-
-		if (readl(&dev->bar->vs) >= NVME_VS(1, 2)) {
-			if (bitmap_empty(eui, len * 8)) {
-				eui = id_ns->nguid;
-				len = sizeof(id_ns->nguid);
-			}
-		}
-		if (bitmap_empty(eui, len * 8))
-			goto scsi_string;
-
-		inq_response[3] = 4 + len; /* Page Length */
-		/* Designation Descriptor start */
-		inq_response[4] = 0x01;    /* Proto ID=0h | Code set=1h */
-		inq_response[5] = 0x02;    /* PIV=0b | Asso=00b | Designator Type=2h */
-		inq_response[6] = 0x00;    /* Rsvd */
-		inq_response[7] = len;     /* Designator Length */
-		memcpy(&inq_response[8], eui, len);
-	} else {
- scsi_string:
-		if (alloc_len < 72) {
-			res = nvme_trans_completion(hdr,
-					SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			goto out_free;
-		}
-		inq_response[3] = 0x48;    /* Page Length */
-		/* Designation Descriptor start */
-		inq_response[4] = 0x03;    /* Proto ID=0h | Code set=3h */
-		inq_response[5] = 0x08;    /* PIV=0b | Asso=00b | Designator Type=8h */
-		inq_response[6] = 0x00;    /* Rsvd */
-		inq_response[7] = 0x44;    /* Designator Length */
-
-		sprintf(&inq_response[8], "%04x", dev->pci_dev->vendor);
-		memcpy(&inq_response[12], dev->model, sizeof(dev->model));
-		sprintf(&inq_response[52], "%04x", tmp_id);
-		memcpy(&inq_response[56], dev->serial, sizeof(dev->serial));
-	}
-	xfer_len = alloc_len;
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out_dma:
-	return res;
-}
-
-static int nvme_trans_ext_inq_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					int alloc_len)
-{
-	u8 *inq_response;
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ctrl *id_ctrl;
-	struct nvme_id_ns *id_ns;
-	int xfer_len;
-	u8 microcode = 0x80;
-	u8 spt;
-	u8 spt_lut[8] = {0, 0, 2, 1, 4, 6, 5, 7};
-	u8 grd_chk, app_chk, ref_chk, protect;
-	u8 uask_sup = 0x20;
-	u8 v_sup;
-	u8 luiclr = 0x01;
-
-	inq_response = kmalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
-	if (inq_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-							&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-
-	/* nvme ns identify */
-	nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_free;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_free;
-	}
-	id_ns = mem;
-	spt = spt_lut[(id_ns->dpc) & 0x07] << 3;
-	(id_ns->dps) ? (protect = 0x01) : (protect = 0);
-	grd_chk = protect << 2;
-	app_chk = protect << 1;
-	ref_chk = protect;
-
-	/* nvme controller identify */
-	nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_free;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_free;
-	}
-	id_ctrl = mem;
-	v_sup = id_ctrl->vwc;
-
-	memset(inq_response, 0, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
-	inq_response[1] = INQ_EXTENDED_INQUIRY_DATA_PAGE;    /* Page Code */
-	inq_response[2] = 0x00;    /* Page Length MSB */
-	inq_response[3] = 0x3C;    /* Page Length LSB */
-	inq_response[4] = microcode | spt | grd_chk | app_chk | ref_chk;
-	inq_response[5] = uask_sup;
-	inq_response[6] = v_sup;
-	inq_response[7] = luiclr;
-	inq_response[8] = 0;
-	inq_response[9] = 0;
-
-	xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
- out_free:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out_dma:
-	kfree(inq_response);
- out_mem:
-	return res;
-}
-
-static int nvme_trans_bdev_limits_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					u8 *inq_response, int alloc_len)
-{
-	__be32 max_sectors = cpu_to_be32(
-		nvme_block_nr(ns, queue_max_hw_sectors(ns->queue)));
-	__be32 max_discard = cpu_to_be32(ns->queue->limits.max_discard_sectors);
-	__be32 discard_desc_count = cpu_to_be32(0x100);
-
-	memset(inq_response, 0, STANDARD_INQUIRY_LENGTH);
-	inq_response[1] = VPD_BLOCK_LIMITS;
-	inq_response[3] = 0x3c; /* Page Length */
-	memcpy(&inq_response[8], &max_sectors, sizeof(u32));
-	memcpy(&inq_response[20], &max_discard, sizeof(u32));
-
-	if (max_discard)
-		memcpy(&inq_response[24], &discard_desc_count, sizeof(u32));
-
-	return nvme_trans_copy_to_user(hdr, inq_response, 0x3c);
-}
-
-static int nvme_trans_bdev_char_page(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					int alloc_len)
-{
-	u8 *inq_response;
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-
-	inq_response = kzalloc(EXTENDED_INQUIRY_DATA_PAGE_LENGTH, GFP_KERNEL);
-	if (inq_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	inq_response[1] = INQ_BDEV_CHARACTERISTICS_PAGE;    /* Page Code */
-	inq_response[2] = 0x00;    /* Page Length MSB */
-	inq_response[3] = 0x3C;    /* Page Length LSB */
-	inq_response[4] = 0x00;    /* Medium Rotation Rate MSB */
-	inq_response[5] = 0x01;    /* Medium Rotation Rate LSB */
-	inq_response[6] = 0x00;    /* Form Factor */
-
-	xfer_len = min(alloc_len, EXTENDED_INQUIRY_DATA_PAGE_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, inq_response, xfer_len);
-
-	kfree(inq_response);
- out_mem:
-	return res;
-}
-
-/* LOG SENSE Helper Functions */
-
-static int nvme_trans_log_supp_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					int alloc_len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-	u8 *log_response;
-
-	log_response = kzalloc(LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH, GFP_KERNEL);
-	if (log_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	log_response[0] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
-	/* Subpage=0x00, Page Length MSB=0 */
-	log_response[3] = SUPPORTED_LOG_PAGES_PAGE_LENGTH;
-	log_response[4] = LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE;
-	log_response[5] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
-	log_response[6] = LOG_PAGE_TEMPERATURE_PAGE;
-
-	xfer_len = min(alloc_len, LOG_PAGE_SUPPORTED_LOG_PAGES_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
-	kfree(log_response);
- out_mem:
-	return res;
-}
-
-static int nvme_trans_log_info_exceptions(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, int alloc_len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-	u8 *log_response;
-	struct nvme_command c;
-	struct nvme_dev *dev = ns->dev;
-	struct nvme_smart_log *smart_log;
-	dma_addr_t dma_addr;
-	void *mem;
-	u8 temp_c;
-	u16 temp_k;
-
-	log_response = kzalloc(LOG_INFO_EXCP_PAGE_LENGTH, GFP_KERNEL);
-	if (log_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev,
-					sizeof(struct nvme_smart_log),
-					&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-
-	/* Get SMART Log Page */
-	memset(&c, 0, sizeof(c));
-	c.common.opcode = nvme_admin_get_log_page;
-	c.common.nsid = cpu_to_le32(0xFFFFFFFF);
-	c.common.prp1 = cpu_to_le64(dma_addr);
-	c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
-			BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
-	res = nvme_submit_admin_cmd(dev, &c, NULL);
-	if (res != NVME_SC_SUCCESS) {
-		temp_c = LOG_TEMP_UNKNOWN;
-	} else {
-		smart_log = mem;
-		temp_k = (smart_log->temperature[1] << 8) +
-				(smart_log->temperature[0]);
-		temp_c = temp_k - KELVIN_TEMP_FACTOR;
-	}
-
-	log_response[0] = LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE;
-	/* Subpage=0x00, Page Length MSB=0 */
-	log_response[3] = REMAINING_INFO_EXCP_PAGE_LENGTH;
-	/* Informational Exceptions Log Parameter 1 Start */
-	/* Parameter Code=0x0000 bytes 4,5 */
-	log_response[6] = 0x23; /* DU=0, TSD=1, ETC=0, TMC=0, FMT_AND_LNK=11b */
-	log_response[7] = 0x04; /* PARAMETER LENGTH */
-	/* Add sense Code and qualifier = 0x00 each */
-	/* Use Temperature from NVMe Get Log Page, convert to C from K */
-	log_response[10] = temp_c;
-
-	xfer_len = min(alloc_len, LOG_INFO_EXCP_PAGE_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log),
-			  mem, dma_addr);
- out_dma:
-	kfree(log_response);
- out_mem:
-	return res;
-}
-
-static int nvme_trans_log_temperature(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					int alloc_len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-	u8 *log_response;
-	struct nvme_command c;
-	struct nvme_dev *dev = ns->dev;
-	struct nvme_smart_log *smart_log;
-	dma_addr_t dma_addr;
-	void *mem;
-	u32 feature_resp;
-	u8 temp_c_cur, temp_c_thresh;
-	u16 temp_k;
-
-	log_response = kzalloc(LOG_TEMP_PAGE_LENGTH, GFP_KERNEL);
-	if (log_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev,
-					sizeof(struct nvme_smart_log),
-					&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-
-	/* Get SMART Log Page */
-	memset(&c, 0, sizeof(c));
-	c.common.opcode = nvme_admin_get_log_page;
-	c.common.nsid = cpu_to_le32(0xFFFFFFFF);
-	c.common.prp1 = cpu_to_le64(dma_addr);
-	c.common.cdw10[0] = cpu_to_le32((((sizeof(struct nvme_smart_log) /
-			BYTES_TO_DWORDS) - 1) << 16) | NVME_LOG_SMART);
-	res = nvme_submit_admin_cmd(dev, &c, NULL);
-	if (res != NVME_SC_SUCCESS) {
-		temp_c_cur = LOG_TEMP_UNKNOWN;
-	} else {
-		smart_log = mem;
-		temp_k = (smart_log->temperature[1] << 8) +
-				(smart_log->temperature[0]);
-		temp_c_cur = temp_k - KELVIN_TEMP_FACTOR;
-	}
-
-	/* Get Features for Temp Threshold */
-	res = nvme_get_features(dev, NVME_FEAT_TEMP_THRESH, 0, 0,
-								&feature_resp);
-	if (res != NVME_SC_SUCCESS)
-		temp_c_thresh = LOG_TEMP_UNKNOWN;
-	else
-		temp_c_thresh = (feature_resp & 0xFFFF) - KELVIN_TEMP_FACTOR;
-
-	log_response[0] = LOG_PAGE_TEMPERATURE_PAGE;
-	/* Subpage=0x00, Page Length MSB=0 */
-	log_response[3] = REMAINING_TEMP_PAGE_LENGTH;
-	/* Temperature Log Parameter 1 (Temperature) Start */
-	/* Parameter Code = 0x0000 */
-	log_response[6] = 0x01;		/* Format and Linking = 01b */
-	log_response[7] = 0x02;		/* Parameter Length */
-	/* Use Temperature from NVMe Get Log Page, convert to C from K */
-	log_response[9] = temp_c_cur;
-	/* Temperature Log Parameter 2 (Reference Temperature) Start */
-	log_response[11] = 0x01;	/* Parameter Code = 0x0001 */
-	log_response[12] = 0x01;	/* Format and Linking = 01b */
-	log_response[13] = 0x02;	/* Parameter Length */
-	/* Use Temperature Thresh from NVMe Get Log Page, convert to C from K */
-	log_response[15] = temp_c_thresh;
-
-	xfer_len = min(alloc_len, LOG_TEMP_PAGE_LENGTH);
-	res = nvme_trans_copy_to_user(hdr, log_response, xfer_len);
-
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_smart_log),
-			  mem, dma_addr);
- out_dma:
-	kfree(log_response);
- out_mem:
-	return res;
-}
-
-/* MODE SENSE Helper Functions */
-
-static int nvme_trans_fill_mode_parm_hdr(u8 *resp, int len, u8 cdb10, u8 llbaa,
-					u16 mode_data_length, u16 blk_desc_len)
-{
-	/* Quick check to make sure I don't stomp on my own memory... */
-	if ((cdb10 && len < 8) || (!cdb10 && len < 4))
-		return SNTI_INTERNAL_ERROR;
-
-	if (cdb10) {
-		resp[0] = (mode_data_length & 0xFF00) >> 8;
-		resp[1] = (mode_data_length & 0x00FF);
-		/* resp[2] and [3] are zero */
-		resp[4] = llbaa;
-		resp[5] = RESERVED_FIELD;
-		resp[6] = (blk_desc_len & 0xFF00) >> 8;
-		resp[7] = (blk_desc_len & 0x00FF);
-	} else {
-		resp[0] = (mode_data_length & 0x00FF);
-		/* resp[1] and [2] are zero */
-		resp[3] = (blk_desc_len & 0x00FF);
-	}
-
-	return SNTI_TRANSLATION_SUCCESS;
-}
-
-static int nvme_trans_fill_blk_desc(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-				    u8 *resp, int len, u8 llbaa)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ns *id_ns;
-	u8 flbas;
-	u32 lba_length;
-
-	if (llbaa == 0 && len < MODE_PAGE_BLK_DES_LEN)
-		return SNTI_INTERNAL_ERROR;
-	else if (llbaa > 0 && len < MODE_PAGE_LLBAA_BLK_DES_LEN)
-		return SNTI_INTERNAL_ERROR;
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-							&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-
-	/* nvme ns identify */
-	nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_dma;
-	}
-	id_ns = mem;
-	flbas = (id_ns->flbas) & 0x0F;
-	lba_length = (1 << (id_ns->lbaf[flbas].ds));
-
-	if (llbaa == 0) {
-		__be32 tmp_cap = cpu_to_be32(le64_to_cpu(id_ns->ncap));
-		/* Byte 4 is reserved */
-		__be32 tmp_len = cpu_to_be32(lba_length & 0x00FFFFFF);
-
-		memcpy(resp, &tmp_cap, sizeof(u32));
-		memcpy(&resp[4], &tmp_len, sizeof(u32));
-	} else {
-		__be64 tmp_cap = cpu_to_be64(le64_to_cpu(id_ns->ncap));
-		__be32 tmp_len = cpu_to_be32(lba_length);
-
-		memcpy(resp, &tmp_cap, sizeof(u64));
-		/* Bytes 8, 9, 10, 11 are reserved */
-		memcpy(&resp[12], &tmp_len, sizeof(u32));
-	}
-
- out_dma:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out:
-	return res;
-}
-
-static int nvme_trans_fill_control_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *resp,
-					int len)
-{
-	if (len < MODE_PAGE_CONTROL_LEN)
-		return SNTI_INTERNAL_ERROR;
-
-	resp[0] = MODE_PAGE_CONTROL;
-	resp[1] = MODE_PAGE_CONTROL_LEN_FIELD;
-	resp[2] = 0x0E;		/* TST=000b, TMF_ONLY=0, DPICZ=1,
-				 * D_SENSE=1, GLTSD=1, RLEC=0 */
-	resp[3] = 0x12;		/* Q_ALGO_MODIFIER=1h, NUAR=0, QERR=01b */
-	/* Byte 4:  VS=0, RAC=0, UA_INT=0, SWP=0 */
-	resp[5] = 0x40;		/* ATO=0, TAS=1, ATMPE=0, RWWP=0, AUTOLOAD=0 */
-	/* resp[6] and [7] are obsolete, thus zero */
-	resp[8] = 0xFF;		/* Busy timeout period = 0xffff */
-	resp[9] = 0xFF;
-	/* Bytes 10,11: Extended selftest completion time = 0x0000 */
-
-	return SNTI_TRANSLATION_SUCCESS;
-}
-
-static int nvme_trans_fill_caching_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr,
-					u8 *resp, int len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	u32 feature_resp;
-	u8 vwc;
-
-	if (len < MODE_PAGE_CACHING_LEN)
-		return SNTI_INTERNAL_ERROR;
-
-	nvme_sc = nvme_get_features(dev, NVME_FEAT_VOLATILE_WC, 0, 0,
-								&feature_resp);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out;
-	}
-	vwc = feature_resp & 0x00000001;
-
-	resp[0] = MODE_PAGE_CACHING;
-	resp[1] = MODE_PAGE_CACHING_LEN_FIELD;
-	resp[2] = vwc << 2;
-
- out:
-	return res;
-}
-
-static int nvme_trans_fill_pow_cnd_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *resp,
-					int len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-
-	if (len < MODE_PAGE_POW_CND_LEN)
-		return SNTI_INTERNAL_ERROR;
-
-	resp[0] = MODE_PAGE_POWER_CONDITION;
-	resp[1] = MODE_PAGE_POW_CND_LEN_FIELD;
-	/* All other bytes are zero */
-
-	return res;
-}
-
-static int nvme_trans_fill_inf_exc_page(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *resp,
-					int len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-
-	if (len < MODE_PAGE_INF_EXC_LEN)
-		return SNTI_INTERNAL_ERROR;
-
-	resp[0] = MODE_PAGE_INFO_EXCEP;
-	resp[1] = MODE_PAGE_INF_EXC_LEN_FIELD;
-	resp[2] = 0x88;
-	/* All other bytes are zero */
-
-	return res;
-}
-
-static int nvme_trans_fill_all_pages(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-				     u8 *resp, int len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u16 mode_pages_offset_1 = 0;
-	u16 mode_pages_offset_2, mode_pages_offset_3, mode_pages_offset_4;
-
-	mode_pages_offset_2 = mode_pages_offset_1 + MODE_PAGE_CACHING_LEN;
-	mode_pages_offset_3 = mode_pages_offset_2 + MODE_PAGE_CONTROL_LEN;
-	mode_pages_offset_4 = mode_pages_offset_3 + MODE_PAGE_POW_CND_LEN;
-
-	res = nvme_trans_fill_caching_page(ns, hdr, &resp[mode_pages_offset_1],
-					MODE_PAGE_CACHING_LEN);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-	res = nvme_trans_fill_control_page(ns, hdr, &resp[mode_pages_offset_2],
-					MODE_PAGE_CONTROL_LEN);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-	res = nvme_trans_fill_pow_cnd_page(ns, hdr, &resp[mode_pages_offset_3],
-					MODE_PAGE_POW_CND_LEN);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-	res = nvme_trans_fill_inf_exc_page(ns, hdr, &resp[mode_pages_offset_4],
-					MODE_PAGE_INF_EXC_LEN);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-
- out:
-	return res;
-}
-
-static inline int nvme_trans_get_blk_desc_len(u8 dbd, u8 llbaa)
-{
-	if (dbd == MODE_SENSE_BLK_DESC_ENABLED) {
-		/* SPC-4: len = 8 x Num_of_descriptors if llbaa = 0, 16x if 1 */
-		return 8 * (llbaa + 1) * MODE_SENSE_BLK_DESC_COUNT;
-	} else {
-		return 0;
-	}
-}
-
-static int nvme_trans_mode_page_create(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *cmd,
-					u16 alloc_len, u8 cdb10,
-					int (*mode_page_fill_func)
-					(struct nvme_ns *,
-					struct sg_io_hdr *hdr, u8 *, int),
-					u16 mode_pages_tot_len)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int xfer_len;
-	u8 *response;
-	u8 dbd, llbaa;
-	u16 resp_size;
-	int mph_size;
-	u16 mode_pages_offset_1;
-	u16 blk_desc_len, blk_desc_offset, mode_data_length;
-
-	dbd = GET_MODE_SENSE_DBD(cmd);
-	llbaa = GET_MODE_SENSE_LLBAA(cmd);
-	mph_size = GET_MODE_SENSE_MPH_SIZE(cdb10);
-	blk_desc_len = nvme_trans_get_blk_desc_len(dbd, llbaa);
-
-	resp_size = mph_size + blk_desc_len + mode_pages_tot_len;
-	/* Refer spc4r34 Table 440 for calculation of Mode data Length field */
-	mode_data_length = 3 + (3 * cdb10) + blk_desc_len + mode_pages_tot_len;
-
-	blk_desc_offset = mph_size;
-	mode_pages_offset_1 = blk_desc_offset + blk_desc_len;
-
-	response = kzalloc(resp_size, GFP_KERNEL);
-	if (response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	res = nvme_trans_fill_mode_parm_hdr(&response[0], mph_size, cdb10,
-					llbaa, mode_data_length, blk_desc_len);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out_free;
-	if (blk_desc_len > 0) {
-		res = nvme_trans_fill_blk_desc(ns, hdr,
-					       &response[blk_desc_offset],
-					       blk_desc_len, llbaa);
-		if (res != SNTI_TRANSLATION_SUCCESS)
-			goto out_free;
-	}
-	res = mode_page_fill_func(ns, hdr, &response[mode_pages_offset_1],
-					mode_pages_tot_len);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out_free;
-
-	xfer_len = min(alloc_len, resp_size);
-	res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
- out_free:
-	kfree(response);
- out_mem:
-	return res;
-}
-
-/* Read Capacity Helper Functions */
-
-static void nvme_trans_fill_read_cap(u8 *response, struct nvme_id_ns *id_ns,
-								u8 cdb16)
-{
-	u8 flbas;
-	u32 lba_length;
-	u64 rlba;
-	u8 prot_en;
-	u8 p_type_lut[4] = {0, 0, 1, 2};
-	__be64 tmp_rlba;
-	__be32 tmp_rlba_32;
-	__be32 tmp_len;
-
-	flbas = (id_ns->flbas) & 0x0F;
-	lba_length = (1 << (id_ns->lbaf[flbas].ds));
-	rlba = le64_to_cpup(&id_ns->nsze) - 1;
-	(id_ns->dps) ? (prot_en = 0x01) : (prot_en = 0);
-
-	if (!cdb16) {
-		if (rlba > 0xFFFFFFFF)
-			rlba = 0xFFFFFFFF;
-		tmp_rlba_32 = cpu_to_be32(rlba);
-		tmp_len = cpu_to_be32(lba_length);
-		memcpy(response, &tmp_rlba_32, sizeof(u32));
-		memcpy(&response[4], &tmp_len, sizeof(u32));
-	} else {
-		tmp_rlba = cpu_to_be64(rlba);
-		tmp_len = cpu_to_be32(lba_length);
-		memcpy(response, &tmp_rlba, sizeof(u64));
-		memcpy(&response[8], &tmp_len, sizeof(u32));
-		response[12] = (p_type_lut[id_ns->dps & 0x3] << 1) | prot_en;
-		/* P_I_Exponent = 0x0 | LBPPBE = 0x0 */
-		/* LBPME = 0 | LBPRZ = 0 | LALBA = 0x00 */
-		/* Bytes 16-31 - Reserved */
-	}
-}
-
-/* Start Stop Unit Helper Functions */
-
-static int nvme_trans_power_state(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-						u8 pc, u8 pcmod, u8 start)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ctrl *id_ctrl;
-	int lowest_pow_st;	/* max npss = lowest power consumption */
-	unsigned ps_desired = 0;
-
-	/* NVMe Controller Identify */
-	mem = dma_alloc_coherent(&dev->pci_dev->dev,
-				sizeof(struct nvme_id_ctrl),
-				&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-	nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_dma;
-	}
-	id_ctrl = mem;
-	lowest_pow_st = max(POWER_STATE_0, (int)(id_ctrl->npss - 1));
-
-	switch (pc) {
-	case NVME_POWER_STATE_START_VALID:
-		/* Action unspecified if POWER CONDITION MODIFIER != 0 */
-		if (pcmod == 0 && start == 0x1)
-			ps_desired = POWER_STATE_0;
-		if (pcmod == 0 && start == 0x0)
-			ps_desired = lowest_pow_st;
-		break;
-	case NVME_POWER_STATE_ACTIVE:
-		/* Action unspecified if POWER CONDITION MODIFIER != 0 */
-		if (pcmod == 0)
-			ps_desired = POWER_STATE_0;
-		break;
-	case NVME_POWER_STATE_IDLE:
-		/* Action unspecified if POWER CONDITION MODIFIER != [0,1,2] */
-		if (pcmod == 0x0)
-			ps_desired = POWER_STATE_1;
-		else if (pcmod == 0x1)
-			ps_desired = POWER_STATE_2;
-		else if (pcmod == 0x2)
-			ps_desired = POWER_STATE_3;
-		break;
-	case NVME_POWER_STATE_STANDBY:
-		/* Action unspecified if POWER CONDITION MODIFIER != [0,1] */
-		if (pcmod == 0x0)
-			ps_desired = max(POWER_STATE_0, (lowest_pow_st - 2));
-		else if (pcmod == 0x1)
-			ps_desired = max(POWER_STATE_0, (lowest_pow_st - 1));
-		break;
-	case NVME_POWER_STATE_LU_CONTROL:
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-				ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-				SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-	nvme_sc = nvme_set_features(dev, NVME_FEAT_POWER_MGMT, ps_desired, 0,
-				    NULL);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc)
-		res = nvme_sc;
- out_dma:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem,
-			  dma_addr);
- out:
-	return res;
-}
-
-/* Write Buffer Helper Functions */
-/* Also using this for Format Unit with hdr passed as NULL, and buffer_id, 0 */
-
-static int nvme_trans_send_fw_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					u8 opcode, u32 tot_len, u32 offset,
-					u8 buffer_id)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	struct nvme_command c;
-	struct nvme_iod *iod = NULL;
-	unsigned length;
-
-	memset(&c, 0, sizeof(c));
-	c.common.opcode = opcode;
-	if (opcode == nvme_admin_download_fw) {
-		if (hdr->iovec_count > 0) {
-			/* Assuming SGL is not allowed for this command */
-			res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_CDB,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			goto out;
-		}
-		iod = nvme_map_user_pages(dev, DMA_TO_DEVICE,
-				(unsigned long)hdr->dxferp, tot_len);
-		if (IS_ERR(iod)) {
-			res = PTR_ERR(iod);
-			goto out;
-		}
-		length = nvme_setup_prps(dev, iod, tot_len, GFP_KERNEL);
-		if (length != tot_len) {
-			res = -ENOMEM;
-			goto out_unmap;
-		}
-
-		c.dlfw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
-		c.dlfw.prp2 = cpu_to_le64(iod->first_dma);
-		c.dlfw.numd = cpu_to_le32((tot_len/BYTES_TO_DWORDS) - 1);
-		c.dlfw.offset = cpu_to_le32(offset/BYTES_TO_DWORDS);
-	} else if (opcode == nvme_admin_activate_fw) {
-		u32 cdw10 = buffer_id | NVME_FWACT_REPL_ACTV;
-		c.common.cdw10[0] = cpu_to_le32(cdw10);
-	}
-
-	nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_unmap;
-	if (nvme_sc)
-		res = nvme_sc;
-
- out_unmap:
-	if (opcode == nvme_admin_download_fw) {
-		nvme_unmap_user_pages(dev, DMA_TO_DEVICE, iod);
-		nvme_free_iod(dev, iod);
-	}
- out:
-	return res;
-}
-
-/* Mode Select Helper Functions */
-
-static inline void nvme_trans_modesel_get_bd_len(u8 *parm_list, u8 cdb10,
-						u16 *bd_len, u8 *llbaa)
-{
-	if (cdb10) {
-		/* 10 Byte CDB */
-		*bd_len = (parm_list[MODE_SELECT_10_BD_OFFSET] << 8) +
-			parm_list[MODE_SELECT_10_BD_OFFSET + 1];
-		*llbaa = parm_list[MODE_SELECT_10_LLBAA_OFFSET] &
-				MODE_SELECT_10_LLBAA_MASK;
-	} else {
-		/* 6 Byte CDB */
-		*bd_len = parm_list[MODE_SELECT_6_BD_OFFSET];
-	}
-}
-
-static void nvme_trans_modesel_save_bd(struct nvme_ns *ns, u8 *parm_list,
-					u16 idx, u16 bd_len, u8 llbaa)
-{
-	u16 bd_num;
-
-	bd_num = bd_len / ((llbaa == 0) ?
-			SHORT_DESC_BLOCK : LONG_DESC_BLOCK);
-	/* Store block descriptor info if a FORMAT UNIT comes later */
-	/* TODO Saving 1st BD info; what to do if multiple BD received? */
-	if (llbaa == 0) {
-		/* Standard Block Descriptor - spc4r34 7.5.5.1 */
-		ns->mode_select_num_blocks =
-				(parm_list[idx + 1] << 16) +
-				(parm_list[idx + 2] << 8) +
-				(parm_list[idx + 3]);
-
-		ns->mode_select_block_len =
-				(parm_list[idx + 5] << 16) +
-				(parm_list[idx + 6] << 8) +
-				(parm_list[idx + 7]);
-	} else {
-		/* Long LBA Block Descriptor - sbc3r27 6.4.2.3 */
-		ns->mode_select_num_blocks =
-				(((u64)parm_list[idx + 0]) << 56) +
-				(((u64)parm_list[idx + 1]) << 48) +
-				(((u64)parm_list[idx + 2]) << 40) +
-				(((u64)parm_list[idx + 3]) << 32) +
-				(((u64)parm_list[idx + 4]) << 24) +
-				(((u64)parm_list[idx + 5]) << 16) +
-				(((u64)parm_list[idx + 6]) << 8) +
-				((u64)parm_list[idx + 7]);
-
-		ns->mode_select_block_len =
-				(parm_list[idx + 12] << 24) +
-				(parm_list[idx + 13] << 16) +
-				(parm_list[idx + 14] << 8) +
-				(parm_list[idx + 15]);
-	}
-}
-
-static int nvme_trans_modesel_get_mp(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					u8 *mode_page, u8 page_code)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	unsigned dword11;
-
-	switch (page_code) {
-	case MODE_PAGE_CACHING:
-		dword11 = ((mode_page[2] & CACHING_MODE_PAGE_WCE_MASK) ? 1 : 0);
-		nvme_sc = nvme_set_features(dev, NVME_FEAT_VOLATILE_WC, dword11,
-					    0, NULL);
-		res = nvme_trans_status_code(hdr, nvme_sc);
-		if (res)
-			break;
-		if (nvme_sc) {
-			res = nvme_sc;
-			break;
-		}
-		break;
-	case MODE_PAGE_CONTROL:
-		break;
-	case MODE_PAGE_POWER_CONDITION:
-		/* Verify the OS is not trying to set timers */
-		if ((mode_page[2] & 0x01) != 0 || (mode_page[3] & 0x0F) != 0) {
-			res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_PARAMETER,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			if (!res)
-				res = SNTI_INTERNAL_ERROR;
-			break;
-		}
-		break;
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		if (!res)
-			res = SNTI_INTERNAL_ERROR;
-		break;
-	}
-
-	return res;
-}
-
-static int nvme_trans_modesel_data(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-					u8 *cmd, u16 parm_list_len, u8 pf,
-					u8 sp, u8 cdb10)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 *parm_list;
-	u16 bd_len;
-	u8 llbaa = 0;
-	u16 index, saved_index;
-	u8 page_code;
-	u16 mp_size;
-
-	/* Get parm list from data-in/out buffer */
-	parm_list = kmalloc(parm_list_len, GFP_KERNEL);
-	if (parm_list == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-
-	res = nvme_trans_copy_from_user(hdr, parm_list, parm_list_len);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out_mem;
-
-	nvme_trans_modesel_get_bd_len(parm_list, cdb10, &bd_len, &llbaa);
-	index = (cdb10) ? (MODE_SELECT_10_MPH_SIZE) : (MODE_SELECT_6_MPH_SIZE);
-
-	if (bd_len != 0) {
-		/* Block Descriptors present, parse */
-		nvme_trans_modesel_save_bd(ns, parm_list, index, bd_len, llbaa);
-		index += bd_len;
-	}
-	saved_index = index;
-
-	/* Multiple mode pages may be present; iterate through all */
-	/* In 1st Iteration, don't do NVME Command, only check for CDB errors */
-	do {
-		page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
-		mp_size = parm_list[index + 1] + 2;
-		if ((page_code != MODE_PAGE_CACHING) &&
-		    (page_code != MODE_PAGE_CONTROL) &&
-		    (page_code != MODE_PAGE_POWER_CONDITION)) {
-			res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_CDB,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			goto out_mem;
-		}
-		index += mp_size;
-	} while (index < parm_list_len);
-
-	/* In 2nd Iteration, do the NVME Commands */
-	index = saved_index;
-	do {
-		page_code = parm_list[index] & MODE_SELECT_PAGE_CODE_MASK;
-		mp_size = parm_list[index + 1] + 2;
-		res = nvme_trans_modesel_get_mp(ns, hdr, &parm_list[index],
-								page_code);
-		if (res != SNTI_TRANSLATION_SUCCESS)
-			break;
-		index += mp_size;
-	} while (index < parm_list_len);
-
- out_mem:
-	kfree(parm_list);
- out:
-	return res;
-}
-
-/* Format Unit Helper Functions */
-
-static int nvme_trans_fmt_set_blk_size_count(struct nvme_ns *ns,
-					     struct sg_io_hdr *hdr)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ns *id_ns;
-	u8 flbas;
-
-	/*
-	 * SCSI Expects a MODE SELECT would have been issued prior to
-	 * a FORMAT UNIT, and the block size and number would be used
-	 * from the block descriptor in it. If a MODE SELECT had not
-	 * been issued, FORMAT shall use the current values for both.
-	 */
-
-	if (ns->mode_select_num_blocks == 0 || ns->mode_select_block_len == 0) {
-		mem = dma_alloc_coherent(&dev->pci_dev->dev,
-			sizeof(struct nvme_id_ns), &dma_addr, GFP_KERNEL);
-		if (mem == NULL) {
-			res = -ENOMEM;
-			goto out;
-		}
-		/* nvme ns identify */
-		nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-		res = nvme_trans_status_code(hdr, nvme_sc);
-		if (res)
-			goto out_dma;
-		if (nvme_sc) {
-			res = nvme_sc;
-			goto out_dma;
-		}
-		id_ns = mem;
-
-		if (ns->mode_select_num_blocks == 0)
-			ns->mode_select_num_blocks = le64_to_cpu(id_ns->ncap);
-		if (ns->mode_select_block_len == 0) {
-			flbas = (id_ns->flbas) & 0x0F;
-			ns->mode_select_block_len =
-						(1 << (id_ns->lbaf[flbas].ds));
-		}
- out_dma:
-		dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-				  mem, dma_addr);
-	}
- out:
-	return res;
-}
-
-static int nvme_trans_fmt_get_parm_header(struct sg_io_hdr *hdr, u8 len,
-					u8 format_prot_info, u8 *nvme_pf_code)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 *parm_list;
-	u8 pf_usage, pf_code;
-
-	parm_list = kmalloc(len, GFP_KERNEL);
-	if (parm_list == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-	res = nvme_trans_copy_from_user(hdr, parm_list, len);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out_mem;
-
-	if ((parm_list[FORMAT_UNIT_IMMED_OFFSET] &
-				FORMAT_UNIT_IMMED_MASK) != 0) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out_mem;
-	}
-
-	if (len == FORMAT_UNIT_LONG_PARM_LIST_LEN &&
-	    (parm_list[FORMAT_UNIT_PROT_INT_OFFSET] & 0x0F) != 0) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out_mem;
-	}
-	pf_usage = parm_list[FORMAT_UNIT_PROT_FIELD_USAGE_OFFSET] &
-			FORMAT_UNIT_PROT_FIELD_USAGE_MASK;
-	pf_code = (pf_usage << 2) | format_prot_info;
-	switch (pf_code) {
-	case 0:
-		*nvme_pf_code = 0;
-		break;
-	case 2:
-		*nvme_pf_code = 1;
-		break;
-	case 3:
-		*nvme_pf_code = 2;
-		break;
-	case 7:
-		*nvme_pf_code = 3;
-		break;
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-
- out_mem:
-	kfree(parm_list);
- out:
-	return res;
-}
-
-static int nvme_trans_fmt_send_cmd(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-				   u8 prot_info)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ns *id_ns;
-	u8 i;
-	u8 flbas, nlbaf;
-	u8 selected_lbaf = 0xFF;
-	u32 cdw10 = 0;
-	struct nvme_command c;
-
-	/* Loop thru LBAF's in id_ns to match reqd lbaf, put in cdw10 */
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-							&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-	/* nvme ns identify */
-	nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_dma;
-	}
-	id_ns = mem;
-	flbas = (id_ns->flbas) & 0x0F;
-	nlbaf = id_ns->nlbaf;
-
-	for (i = 0; i < nlbaf; i++) {
-		if (ns->mode_select_block_len == (1 << (id_ns->lbaf[i].ds))) {
-			selected_lbaf = i;
-			break;
-		}
-	}
-	if (selected_lbaf > 0x0F) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-				ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
-				SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-	}
-	if (ns->mode_select_num_blocks != le64_to_cpu(id_ns->ncap)) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-				ILLEGAL_REQUEST, SCSI_ASC_INVALID_PARAMETER,
-				SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-	}
-
-	cdw10 |= prot_info << 5;
-	cdw10 |= selected_lbaf & 0x0F;
-	memset(&c, 0, sizeof(c));
-	c.format.opcode = nvme_admin_format_nvm;
-	c.format.nsid = cpu_to_le32(ns->ns_id);
-	c.format.cdw10 = cpu_to_le32(cdw10);
-
-	nvme_sc = nvme_submit_admin_cmd(dev, &c, NULL);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc)
-		res = nvme_sc;
-
- out_dma:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out:
-	return res;
-}
-
-/* Read/Write Helper Functions */
-
-static inline void nvme_trans_get_io_cdb6(u8 *cmd,
-					struct nvme_trans_io_cdb *cdb_info)
-{
-	cdb_info->fua = 0;
-	cdb_info->prot_info = 0;
-	cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_6_CDB_LBA_OFFSET) &
-					IO_6_CDB_LBA_MASK;
-	cdb_info->xfer_len = GET_U8_FROM_CDB(cmd, IO_6_CDB_TX_LEN_OFFSET);
-
-	/* sbc3r27 sec 5.32 - TRANSFER LEN of 0 implies a 256 Block transfer */
-	if (cdb_info->xfer_len == 0)
-		cdb_info->xfer_len = IO_6_DEFAULT_TX_LEN;
-}
-
-static inline void nvme_trans_get_io_cdb10(u8 *cmd,
-					struct nvme_trans_io_cdb *cdb_info)
-{
-	cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_10_CDB_FUA_OFFSET) &
-					IO_CDB_FUA_MASK;
-	cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_10_CDB_WP_OFFSET) &
-					IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
-	cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_10_CDB_LBA_OFFSET);
-	cdb_info->xfer_len = GET_U16_FROM_CDB(cmd, IO_10_CDB_TX_LEN_OFFSET);
-}
-
-static inline void nvme_trans_get_io_cdb12(u8 *cmd,
-					struct nvme_trans_io_cdb *cdb_info)
-{
-	cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_12_CDB_FUA_OFFSET) &
-					IO_CDB_FUA_MASK;
-	cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_12_CDB_WP_OFFSET) &
-					IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
-	cdb_info->lba = GET_U32_FROM_CDB(cmd, IO_12_CDB_LBA_OFFSET);
-	cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_12_CDB_TX_LEN_OFFSET);
-}
-
-static inline void nvme_trans_get_io_cdb16(u8 *cmd,
-					struct nvme_trans_io_cdb *cdb_info)
-{
-	cdb_info->fua = GET_U8_FROM_CDB(cmd, IO_16_CDB_FUA_OFFSET) &
-					IO_CDB_FUA_MASK;
-	cdb_info->prot_info = GET_U8_FROM_CDB(cmd, IO_16_CDB_WP_OFFSET) &
-					IO_CDB_WP_MASK >> IO_CDB_WP_SHIFT;
-	cdb_info->lba = GET_U64_FROM_CDB(cmd, IO_16_CDB_LBA_OFFSET);
-	cdb_info->xfer_len = GET_U32_FROM_CDB(cmd, IO_16_CDB_TX_LEN_OFFSET);
-}
-
-static inline u32 nvme_trans_io_get_num_cmds(struct sg_io_hdr *hdr,
-					struct nvme_trans_io_cdb *cdb_info,
-					u32 max_blocks)
-{
-	/* If using iovecs, send one nvme command per vector */
-	if (hdr->iovec_count > 0)
-		return hdr->iovec_count;
-	else if (cdb_info->xfer_len > max_blocks)
-		return ((cdb_info->xfer_len - 1) / max_blocks) + 1;
-	else
-		return 1;
-}
-
-static u16 nvme_trans_io_get_control(struct nvme_ns *ns,
-					struct nvme_trans_io_cdb *cdb_info)
-{
-	u16 control = 0;
-
-	/* When Protection information support is added, implement here */
-
-	if (cdb_info->fua > 0)
-		control |= NVME_RW_FUA;
-
-	return control;
-}
-
-static int nvme_trans_do_nvme_io(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-				struct nvme_trans_io_cdb *cdb_info, u8 is_write)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_dev *dev = ns->dev;
-	u32 num_cmds;
-	struct nvme_iod *iod;
-	u64 unit_len;
-	u64 unit_num_blocks;	/* Number of blocks to xfer in each nvme cmd */
-	u32 retcode;
-	u32 i = 0;
-	u64 nvme_offset = 0;
-	void __user *next_mapping_addr;
-	struct nvme_command c;
-	u8 opcode = (is_write ? nvme_cmd_write : nvme_cmd_read);
-	u16 control;
-	u32 max_blocks = queue_max_hw_sectors(ns->queue);
-
-	num_cmds = nvme_trans_io_get_num_cmds(hdr, cdb_info, max_blocks);
-
-	/*
-	 * This loop handles two cases.
-	 * First, when an SGL is used in the form of an iovec list:
-	 *   - Use iov_base as the next mapping address for the nvme command_id
-	 *   - Use iov_len as the data transfer length for the command.
-	 * Second, when we have a single buffer
-	 *   - If larger than max_blocks, split into chunks, offset
-	 *        each nvme command accordingly.
-	 */
-	for (i = 0; i < num_cmds; i++) {
-		memset(&c, 0, sizeof(c));
-		if (hdr->iovec_count > 0) {
-			struct sg_iovec sgl;
-
-			retcode = copy_from_user(&sgl, hdr->dxferp +
-					i * sizeof(struct sg_iovec),
-					sizeof(struct sg_iovec));
-			if (retcode)
-				return -EFAULT;
-			unit_len = sgl.iov_len;
-			unit_num_blocks = unit_len >> ns->lba_shift;
-			next_mapping_addr = sgl.iov_base;
-		} else {
-			unit_num_blocks = min((u64)max_blocks,
-					(cdb_info->xfer_len - nvme_offset));
-			unit_len = unit_num_blocks << ns->lba_shift;
-			next_mapping_addr = hdr->dxferp +
-					((1 << ns->lba_shift) * nvme_offset);
-		}
-
-		c.rw.opcode = opcode;
-		c.rw.nsid = cpu_to_le32(ns->ns_id);
-		c.rw.slba = cpu_to_le64(cdb_info->lba + nvme_offset);
-		c.rw.length = cpu_to_le16(unit_num_blocks - 1);
-		control = nvme_trans_io_get_control(ns, cdb_info);
-		c.rw.control = cpu_to_le16(control);
-
-		iod = nvme_map_user_pages(dev,
-			(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
-			(unsigned long)next_mapping_addr, unit_len);
-		if (IS_ERR(iod)) {
-			res = PTR_ERR(iod);
-			goto out;
-		}
-		retcode = nvme_setup_prps(dev, iod, unit_len, GFP_KERNEL);
-		if (retcode != unit_len) {
-			nvme_unmap_user_pages(dev,
-				(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
-				iod);
-			nvme_free_iod(dev, iod);
-			res = -ENOMEM;
-			goto out;
-		}
-		c.rw.prp1 = cpu_to_le64(sg_dma_address(iod->sg));
-		c.rw.prp2 = cpu_to_le64(iod->first_dma);
-
-		nvme_offset += unit_num_blocks;
-
-		nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL);
-		if (nvme_sc != NVME_SC_SUCCESS) {
-			nvme_unmap_user_pages(dev,
-				(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
-				iod);
-			nvme_free_iod(dev, iod);
-			res = nvme_trans_status_code(hdr, nvme_sc);
-			goto out;
-		}
-		nvme_unmap_user_pages(dev,
-				(is_write) ? DMA_TO_DEVICE : DMA_FROM_DEVICE,
-				iod);
-		nvme_free_iod(dev, iod);
-	}
-	res = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
-
- out:
-	return res;
-}
-
-
-/* SCSI Command Translation Functions */
-
-static int nvme_trans_io(struct nvme_ns *ns, struct sg_io_hdr *hdr, u8 is_write,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	struct nvme_trans_io_cdb cdb_info;
-	u8 opcode = cmd[0];
-	u64 xfer_bytes;
-	u64 sum_iov_len = 0;
-	struct sg_iovec sgl;
-	int i;
-	size_t not_copied;
-
-	/* Extract Fields from CDB */
-	switch (opcode) {
-	case WRITE_6:
-	case READ_6:
-		nvme_trans_get_io_cdb6(cmd, &cdb_info);
-		break;
-	case WRITE_10:
-	case READ_10:
-		nvme_trans_get_io_cdb10(cmd, &cdb_info);
-		break;
-	case WRITE_12:
-	case READ_12:
-		nvme_trans_get_io_cdb12(cmd, &cdb_info);
-		break;
-	case WRITE_16:
-	case READ_16:
-		nvme_trans_get_io_cdb16(cmd, &cdb_info);
-		break;
-	default:
-		/* Will never really reach here */
-		res = SNTI_INTERNAL_ERROR;
-		goto out;
-	}
-
-	/* Calculate total length of transfer (in bytes) */
-	if (hdr->iovec_count > 0) {
-		for (i = 0; i < hdr->iovec_count; i++) {
-			not_copied = copy_from_user(&sgl, hdr->dxferp +
-						i * sizeof(struct sg_iovec),
-						sizeof(struct sg_iovec));
-			if (not_copied)
-				return -EFAULT;
-			sum_iov_len += sgl.iov_len;
-			/* IO vector sizes should be multiples of block size */
-			if (sgl.iov_len % (1 << ns->lba_shift) != 0) {
-				res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_PARAMETER,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-				goto out;
-			}
-		}
-	} else {
-		sum_iov_len = hdr->dxfer_len;
-	}
-
-	/* As Per sg ioctl howto, if the lengths differ, use the lower one */
-	xfer_bytes = min(((u64)hdr->dxfer_len), sum_iov_len);
-
-	/* If block count and actual data buffer size dont match, error out */
-	if (xfer_bytes != (cdb_info.xfer_len << ns->lba_shift)) {
-		res = -EINVAL;
-		goto out;
-	}
-
-	/* Check for 0 length transfer - it is not illegal */
-	if (cdb_info.xfer_len == 0)
-		goto out;
-
-	/* Send NVMe IO Command(s) */
-	res = nvme_trans_do_nvme_io(ns, hdr, &cdb_info, is_write);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-
- out:
-	return res;
-}
-
-static int nvme_trans_inquiry(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 evpd;
-	u8 page_code;
-	int alloc_len;
-	u8 *inq_response;
-
-	evpd = GET_INQ_EVPD_BIT(cmd);
-	page_code = GET_INQ_PAGE_CODE(cmd);
-	alloc_len = GET_INQ_ALLOC_LENGTH(cmd);
-
-	inq_response = kmalloc(max(alloc_len, STANDARD_INQUIRY_LENGTH),
-				GFP_KERNEL);
-	if (inq_response == NULL) {
-		res = -ENOMEM;
-		goto out_mem;
-	}
-
-	if (evpd == 0) {
-		if (page_code == INQ_STANDARD_INQUIRY_PAGE) {
-			res = nvme_trans_standard_inquiry_page(ns, hdr,
-						inq_response, alloc_len);
-		} else {
-			res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_CDB,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		}
-	} else {
-		switch (page_code) {
-		case VPD_SUPPORTED_PAGES:
-			res = nvme_trans_supported_vpd_pages(ns, hdr,
-						inq_response, alloc_len);
-			break;
-		case VPD_SERIAL_NUMBER:
-			res = nvme_trans_unit_serial_page(ns, hdr, inq_response,
-								alloc_len);
-			break;
-		case VPD_DEVICE_IDENTIFIERS:
-			res = nvme_trans_device_id_page(ns, hdr, inq_response,
-								alloc_len);
-			break;
-		case VPD_EXTENDED_INQUIRY:
-			res = nvme_trans_ext_inq_page(ns, hdr, alloc_len);
-			break;
-		case VPD_BLOCK_LIMITS:
-			res = nvme_trans_bdev_limits_page(ns, hdr, inq_response,
-								alloc_len);
-			break;
-		case VPD_BLOCK_DEV_CHARACTERISTICS:
-			res = nvme_trans_bdev_char_page(ns, hdr, alloc_len);
-			break;
-		default:
-			res = nvme_trans_completion(hdr,
-						SAM_STAT_CHECK_CONDITION,
-						ILLEGAL_REQUEST,
-						SCSI_ASC_INVALID_CDB,
-						SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			break;
-		}
-	}
-	kfree(inq_response);
- out_mem:
-	return res;
-}
-
-static int nvme_trans_log_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u16 alloc_len;
-	u8 sp;
-	u8 pc;
-	u8 page_code;
-
-	sp = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_SP_OFFSET);
-	if (sp != LOG_SENSE_CDB_SP_NOT_ENABLED) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-	pc = GET_U8_FROM_CDB(cmd, LOG_SENSE_CDB_PC_OFFSET);
-	page_code = pc & LOG_SENSE_CDB_PAGE_CODE_MASK;
-	pc = (pc & LOG_SENSE_CDB_PC_MASK) >> LOG_SENSE_CDB_PC_SHIFT;
-	if (pc != LOG_SENSE_CDB_PC_CUMULATIVE_VALUES) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-	alloc_len = GET_U16_FROM_CDB(cmd, LOG_SENSE_CDB_ALLOC_LENGTH_OFFSET);
-	switch (page_code) {
-	case LOG_PAGE_SUPPORTED_LOG_PAGES_PAGE:
-		res = nvme_trans_log_supp_pages(ns, hdr, alloc_len);
-		break;
-	case LOG_PAGE_INFORMATIONAL_EXCEPTIONS_PAGE:
-		res = nvme_trans_log_info_exceptions(ns, hdr, alloc_len);
-		break;
-	case LOG_PAGE_TEMPERATURE_PAGE:
-		res = nvme_trans_log_temperature(ns, hdr, alloc_len);
-		break;
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-
- out:
-	return res;
-}
-
-static int nvme_trans_mode_select(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 cdb10 = 0;
-	u16 parm_list_len;
-	u8 page_format;
-	u8 save_pages;
-
-	page_format = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_PAGE_FORMAT_OFFSET);
-	page_format &= MODE_SELECT_CDB_PAGE_FORMAT_MASK;
-
-	save_pages = GET_U8_FROM_CDB(cmd, MODE_SELECT_CDB_SAVE_PAGES_OFFSET);
-	save_pages &= MODE_SELECT_CDB_SAVE_PAGES_MASK;
-
-	if (GET_OPCODE(cmd) == MODE_SELECT) {
-		parm_list_len = GET_U8_FROM_CDB(cmd,
-				MODE_SELECT_6_CDB_PARAM_LIST_LENGTH_OFFSET);
-	} else {
-		parm_list_len = GET_U16_FROM_CDB(cmd,
-				MODE_SELECT_10_CDB_PARAM_LIST_LENGTH_OFFSET);
-		cdb10 = 1;
-	}
-
-	if (parm_list_len != 0) {
-		/*
-		 * According to SPC-4 r24, a paramter list length field of 0
-		 * shall not be considered an error
-		 */
-		res = nvme_trans_modesel_data(ns, hdr, cmd, parm_list_len,
-						page_format, save_pages, cdb10);
-	}
-
-	return res;
-}
-
-static int nvme_trans_mode_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u16 alloc_len;
-	u8 cdb10 = 0;
-	u8 page_code;
-	u8 pc;
-
-	if (GET_OPCODE(cmd) == MODE_SENSE) {
-		alloc_len = GET_U8_FROM_CDB(cmd, MODE_SENSE6_ALLOC_LEN_OFFSET);
-	} else {
-		alloc_len = GET_U16_FROM_CDB(cmd,
-						MODE_SENSE10_ALLOC_LEN_OFFSET);
-		cdb10 = 1;
-	}
-
-	pc = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CONTROL_OFFSET) &
-						MODE_SENSE_PAGE_CONTROL_MASK;
-	if (pc != MODE_SENSE_PC_CURRENT_VALUES) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-
-	page_code = GET_U8_FROM_CDB(cmd, MODE_SENSE_PAGE_CODE_OFFSET) &
-					MODE_SENSE_PAGE_CODE_MASK;
-	switch (page_code) {
-	case MODE_PAGE_CACHING:
-		res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
-						cdb10,
-						&nvme_trans_fill_caching_page,
-						MODE_PAGE_CACHING_LEN);
-		break;
-	case MODE_PAGE_CONTROL:
-		res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
-						cdb10,
-						&nvme_trans_fill_control_page,
-						MODE_PAGE_CONTROL_LEN);
-		break;
-	case MODE_PAGE_POWER_CONDITION:
-		res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
-						cdb10,
-						&nvme_trans_fill_pow_cnd_page,
-						MODE_PAGE_POW_CND_LEN);
-		break;
-	case MODE_PAGE_INFO_EXCEP:
-		res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
-						cdb10,
-						&nvme_trans_fill_inf_exc_page,
-						MODE_PAGE_INF_EXC_LEN);
-		break;
-	case MODE_PAGE_RETURN_ALL:
-		res = nvme_trans_mode_page_create(ns, hdr, cmd, alloc_len,
-						cdb10,
-						&nvme_trans_fill_all_pages,
-						MODE_PAGE_ALL_LEN);
-		break;
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-
- out:
-	return res;
-}
-
-static int nvme_trans_read_capacity(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	u32 alloc_len = READ_CAP_10_RESP_SIZE;
-	u32 resp_size = READ_CAP_10_RESP_SIZE;
-	u32 xfer_len;
-	u8 cdb16;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ns *id_ns;
-	u8 *response;
-
-	cdb16 = IS_READ_CAP_16(cmd);
-	if (cdb16) {
-		alloc_len = GET_READ_CAP_16_ALLOC_LENGTH(cmd);
-		resp_size = READ_CAP_16_RESP_SIZE;
-	}
-
-	mem = dma_alloc_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns),
-							&dma_addr, GFP_KERNEL);
-	if (mem == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-	/* nvme ns identify */
-	nvme_sc = nvme_identify(dev, ns->ns_id, 0, dma_addr);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out_dma;
-	if (nvme_sc) {
-		res = nvme_sc;
-		goto out_dma;
-	}
-	id_ns = mem;
-
-	response = kzalloc(resp_size, GFP_KERNEL);
-	if (response == NULL) {
-		res = -ENOMEM;
-		goto out_dma;
-	}
-	nvme_trans_fill_read_cap(response, id_ns, cdb16);
-
-	xfer_len = min(alloc_len, resp_size);
-	res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
-	kfree(response);
- out_dma:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ns), mem,
-			  dma_addr);
- out:
-	return res;
-}
-
-static int nvme_trans_report_luns(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	u32 alloc_len, xfer_len, resp_size;
-	u8 select_report;
-	u8 *response;
-	struct nvme_dev *dev = ns->dev;
-	dma_addr_t dma_addr;
-	void *mem;
-	struct nvme_id_ctrl *id_ctrl;
-	u32 ll_length, lun_id;
-	u8 lun_id_offset = REPORT_LUNS_FIRST_LUN_OFFSET;
-	__be32 tmp_len;
-
-	alloc_len = GET_REPORT_LUNS_ALLOC_LENGTH(cmd);
-	select_report = GET_U8_FROM_CDB(cmd, REPORT_LUNS_SR_OFFSET);
-
-	if ((select_report != ALL_LUNS_RETURNED) &&
-	    (select_report != ALL_WELL_KNOWN_LUNS_RETURNED) &&
-	    (select_report != RESTRICTED_LUNS_RETURNED)) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	} else {
-		/* NVMe Controller Identify */
-		mem = dma_alloc_coherent(&dev->pci_dev->dev,
-					sizeof(struct nvme_id_ctrl),
-					&dma_addr, GFP_KERNEL);
-		if (mem == NULL) {
-			res = -ENOMEM;
-			goto out;
-		}
-		nvme_sc = nvme_identify(dev, 0, 1, dma_addr);
-		res = nvme_trans_status_code(hdr, nvme_sc);
-		if (res)
-			goto out_dma;
-		if (nvme_sc) {
-			res = nvme_sc;
-			goto out_dma;
-		}
-		id_ctrl = mem;
-		ll_length = le32_to_cpu(id_ctrl->nn) * LUN_ENTRY_SIZE;
-		resp_size = ll_length + LUN_DATA_HEADER_SIZE;
-
-		if (alloc_len < resp_size) {
-			res = nvme_trans_completion(hdr,
-					SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-			goto out_dma;
-		}
-
-		response = kzalloc(resp_size, GFP_KERNEL);
-		if (response == NULL) {
-			res = -ENOMEM;
-			goto out_dma;
-		}
-
-		/* The first LUN ID will always be 0 per the SAM spec */
-		for (lun_id = 0; lun_id < le32_to_cpu(id_ctrl->nn); lun_id++) {
-			/*
-			 * Set the LUN Id and then increment to the next LUN
-			 * location in the parameter data.
-			 */
-			__be64 tmp_id = cpu_to_be64(lun_id);
-			memcpy(&response[lun_id_offset], &tmp_id, sizeof(u64));
-			lun_id_offset += LUN_ENTRY_SIZE;
-		}
-		tmp_len = cpu_to_be32(ll_length);
-		memcpy(response, &tmp_len, sizeof(u32));
-	}
-
-	xfer_len = min(alloc_len, resp_size);
-	res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
-	kfree(response);
- out_dma:
-	dma_free_coherent(&dev->pci_dev->dev, sizeof(struct nvme_id_ctrl), mem,
-			  dma_addr);
- out:
-	return res;
-}
-
-static int nvme_trans_request_sense(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 alloc_len, xfer_len, resp_size;
-	u8 desc_format;
-	u8 *response;
-
-	alloc_len = GET_REQUEST_SENSE_ALLOC_LENGTH(cmd);
-	desc_format = GET_U8_FROM_CDB(cmd, REQUEST_SENSE_DESC_OFFSET);
-	desc_format &= REQUEST_SENSE_DESC_MASK;
-
-	resp_size = ((desc_format) ? (DESC_FMT_SENSE_DATA_SIZE) :
-					(FIXED_FMT_SENSE_DATA_SIZE));
-	response = kzalloc(resp_size, GFP_KERNEL);
-	if (response == NULL) {
-		res = -ENOMEM;
-		goto out;
-	}
-
-	if (desc_format == DESCRIPTOR_FORMAT_SENSE_DATA_TYPE) {
-		/* Descriptor Format Sense Data */
-		response[0] = DESC_FORMAT_SENSE_DATA;
-		response[1] = NO_SENSE;
-		/* TODO How is LOW POWER CONDITION ON handled? (byte 2) */
-		response[2] = SCSI_ASC_NO_SENSE;
-		response[3] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		/* SDAT_OVFL = 0 | Additional Sense Length = 0 */
-	} else {
-		/* Fixed Format Sense Data */
-		response[0] = FIXED_SENSE_DATA;
-		/* Byte 1 = Obsolete */
-		response[2] = NO_SENSE; /* FM, EOM, ILI, SDAT_OVFL = 0 */
-		/* Bytes 3-6 - Information - set to zero */
-		response[7] = FIXED_SENSE_DATA_ADD_LENGTH;
-		/* Bytes 8-11 - Cmd Specific Information - set to zero */
-		response[12] = SCSI_ASC_NO_SENSE;
-		response[13] = SCSI_ASCQ_CAUSE_NOT_REPORTABLE;
-		/* Byte 14 = Field Replaceable Unit Code = 0 */
-		/* Bytes 15-17 - SKSV=0; Sense Key Specific = 0 */
-	}
-
-	xfer_len = min(alloc_len, resp_size);
-	res = nvme_trans_copy_to_user(hdr, response, xfer_len);
-
-	kfree(response);
- out:
-	return res;
-}
-
-static int nvme_trans_security_protocol(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr,
-					u8 *cmd)
-{
-	return nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-				ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
-				SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-}
-
-static int nvme_trans_start_stop(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_command c;
-	u8 immed, pcmod, pc, no_flush, start;
-
-	immed = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_IMMED_OFFSET);
-	pcmod = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_MOD_OFFSET);
-	pc = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_POWER_COND_OFFSET);
-	no_flush = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_NO_FLUSH_OFFSET);
-	start = GET_U8_FROM_CDB(cmd, START_STOP_UNIT_CDB_START_OFFSET);
-
-	immed &= START_STOP_UNIT_CDB_IMMED_MASK;
-	pcmod &= START_STOP_UNIT_CDB_POWER_COND_MOD_MASK;
-	pc = (pc & START_STOP_UNIT_CDB_POWER_COND_MASK) >> NIBBLE_SHIFT;
-	no_flush &= START_STOP_UNIT_CDB_NO_FLUSH_MASK;
-	start &= START_STOP_UNIT_CDB_START_MASK;
-
-	if (immed != 0) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-	} else {
-		if (no_flush == 0) {
-			/* Issue NVME FLUSH command prior to START STOP UNIT */
-			memset(&c, 0, sizeof(c));
-			c.common.opcode = nvme_cmd_flush;
-			c.common.nsid = cpu_to_le32(ns->ns_id);
-
-			nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL);
-			res = nvme_trans_status_code(hdr, nvme_sc);
-			if (res)
-				goto out;
-			if (nvme_sc) {
-				res = nvme_sc;
-				goto out;
-			}
-		}
-		/* Setup the expected power state transition */
-		res = nvme_trans_power_state(ns, hdr, pc, pcmod, start);
-	}
-
- out:
-	return res;
-}
-
-static int nvme_trans_synchronize_cache(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr, u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	int nvme_sc;
-	struct nvme_command c;
-
-	memset(&c, 0, sizeof(c));
-	c.common.opcode = nvme_cmd_flush;
-	c.common.nsid = cpu_to_le32(ns->ns_id);
-
-	nvme_sc = nvme_submit_io_cmd(ns->dev, ns, &c, NULL);
-
-	res = nvme_trans_status_code(hdr, nvme_sc);
-	if (res)
-		goto out;
-	if (nvme_sc)
-		res = nvme_sc;
-
- out:
-	return res;
-}
-
-static int nvme_trans_format_unit(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u8 parm_hdr_len = 0;
-	u8 nvme_pf_code = 0;
-	u8 format_prot_info, long_list, format_data;
-
-	format_prot_info = GET_U8_FROM_CDB(cmd,
-				FORMAT_UNIT_CDB_FORMAT_PROT_INFO_OFFSET);
-	long_list = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_LONG_LIST_OFFSET);
-	format_data = GET_U8_FROM_CDB(cmd, FORMAT_UNIT_CDB_FORMAT_DATA_OFFSET);
-
-	format_prot_info = (format_prot_info &
-				FORMAT_UNIT_CDB_FORMAT_PROT_INFO_MASK) >>
-				FORMAT_UNIT_CDB_FORMAT_PROT_INFO_SHIFT;
-	long_list &= FORMAT_UNIT_CDB_LONG_LIST_MASK;
-	format_data &= FORMAT_UNIT_CDB_FORMAT_DATA_MASK;
-
-	if (format_data != 0) {
-		if (format_prot_info != 0) {
-			if (long_list == 0)
-				parm_hdr_len = FORMAT_UNIT_SHORT_PARM_LIST_LEN;
-			else
-				parm_hdr_len = FORMAT_UNIT_LONG_PARM_LIST_LEN;
-		}
-	} else if (format_data == 0 && format_prot_info != 0) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-
-	/* Get parm header from data-in/out buffer */
-	/*
-	 * According to the translation spec, the only fields in the parameter
-	 * list we are concerned with are in the header. So allocate only that.
-	 */
-	if (parm_hdr_len > 0) {
-		res = nvme_trans_fmt_get_parm_header(hdr, parm_hdr_len,
-					format_prot_info, &nvme_pf_code);
-		if (res != SNTI_TRANSLATION_SUCCESS)
-			goto out;
-	}
-
-	/* Attempt to activate any previously downloaded firmware image */
-	res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw, 0, 0, 0);
-
-	/* Determine Block size and count and send format command */
-	res = nvme_trans_fmt_set_blk_size_count(ns, hdr);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-
-	res = nvme_trans_fmt_send_cmd(ns, hdr, nvme_pf_code);
-
- out:
-	return res;
-}
-
-static int nvme_trans_test_unit_ready(struct nvme_ns *ns,
-					struct sg_io_hdr *hdr,
-					u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	struct nvme_dev *dev = ns->dev;
-
-	if (!(readl(&dev->bar->csts) & NVME_CSTS_RDY))
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					    NOT_READY, SCSI_ASC_LUN_NOT_READY,
-					    SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-	else
-		res = nvme_trans_completion(hdr, SAM_STAT_GOOD, NO_SENSE, 0, 0);
-
-	return res;
-}
-
-static int nvme_trans_write_buffer(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	int res = SNTI_TRANSLATION_SUCCESS;
-	u32 buffer_offset, parm_list_length;
-	u8 buffer_id, mode;
-
-	parm_list_length =
-		GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_PARM_LIST_LENGTH_OFFSET);
-	if (parm_list_length % BYTES_TO_DWORDS != 0) {
-		/* NVMe expects Firmware file to be a whole number of DWORDS */
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-	buffer_id = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_ID_OFFSET);
-	if (buffer_id > NVME_MAX_FIRMWARE_SLOT) {
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		goto out;
-	}
-	mode = GET_U8_FROM_CDB(cmd, WRITE_BUFFER_CDB_MODE_OFFSET) &
-						WRITE_BUFFER_CDB_MODE_MASK;
-	buffer_offset =
-		GET_U24_FROM_CDB(cmd, WRITE_BUFFER_CDB_BUFFER_OFFSET_OFFSET);
-
-	switch (mode) {
-	case DOWNLOAD_SAVE_ACTIVATE:
-		res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw,
-						parm_list_length, buffer_offset,
-						buffer_id);
-		if (res != SNTI_TRANSLATION_SUCCESS)
-			goto out;
-		res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw,
-						parm_list_length, buffer_offset,
-						buffer_id);
-		break;
-	case DOWNLOAD_SAVE_DEFER_ACTIVATE:
-		res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_download_fw,
-						parm_list_length, buffer_offset,
-						buffer_id);
-		break;
-	case ACTIVATE_DEFERRED_MICROCODE:
-		res = nvme_trans_send_fw_cmd(ns, hdr, nvme_admin_activate_fw,
-						parm_list_length, buffer_offset,
-						buffer_id);
-		break;
-	default:
-		res = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-					ILLEGAL_REQUEST, SCSI_ASC_INVALID_CDB,
-					SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-
- out:
-	return res;
-}
-
-struct scsi_unmap_blk_desc {
-	__be64	slba;
-	__be32	nlb;
-	u32	resv;
-};
-
-struct scsi_unmap_parm_list {
-	__be16	unmap_data_len;
-	__be16	unmap_blk_desc_data_len;
-	u32	resv;
-	struct scsi_unmap_blk_desc desc[0];
-};
-
-static int nvme_trans_unmap(struct nvme_ns *ns, struct sg_io_hdr *hdr,
-							u8 *cmd)
-{
-	struct nvme_dev *dev = ns->dev;
-	struct scsi_unmap_parm_list *plist;
-	struct nvme_dsm_range *range;
-	struct nvme_command c;
-	int i, nvme_sc, res = -ENOMEM;
-	u16 ndesc, list_len;
-	dma_addr_t dma_addr;
-
-	list_len = GET_U16_FROM_CDB(cmd, UNMAP_CDB_PARAM_LIST_LENGTH_OFFSET);
-	if (!list_len)
-		return -EINVAL;
-
-	plist = kmalloc(list_len, GFP_KERNEL);
-	if (!plist)
-		return -ENOMEM;
-
-	res = nvme_trans_copy_from_user(hdr, plist, list_len);
-	if (res != SNTI_TRANSLATION_SUCCESS)
-		goto out;
-
-	ndesc = be16_to_cpu(plist->unmap_blk_desc_data_len) >> 4;
-	if (!ndesc || ndesc > 256) {
-		res = -EINVAL;
-		goto out;
-	}
-
-	range = dma_alloc_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range),
-							&dma_addr, GFP_KERNEL);
-	if (!range)
-		goto out;
-
-	for (i = 0; i < ndesc; i++) {
-		range[i].nlb = cpu_to_le32(be32_to_cpu(plist->desc[i].nlb));
-		range[i].slba = cpu_to_le64(be64_to_cpu(plist->desc[i].slba));
-		range[i].cattr = 0;
-	}
-
-	memset(&c, 0, sizeof(c));
-	c.dsm.opcode = nvme_cmd_dsm;
-	c.dsm.nsid = cpu_to_le32(ns->ns_id);
-	c.dsm.prp1 = cpu_to_le64(dma_addr);
-	c.dsm.nr = cpu_to_le32(ndesc - 1);
-	c.dsm.attributes = cpu_to_le32(NVME_DSMGMT_AD);
-
-	nvme_sc = nvme_submit_io_cmd(dev, ns, &c, NULL);
-	res = nvme_trans_status_code(hdr, nvme_sc);
-
-	dma_free_coherent(&dev->pci_dev->dev, ndesc * sizeof(*range),
-							range, dma_addr);
- out:
-	kfree(plist);
-	return res;
-}
-
-static int nvme_scsi_translate(struct nvme_ns *ns, struct sg_io_hdr *hdr)
-{
-	u8 cmd[BLK_MAX_CDB];
-	int retcode;
-	unsigned int opcode;
-
-	if (hdr->cmdp == NULL)
-		return -EMSGSIZE;
-	if (copy_from_user(cmd, hdr->cmdp, hdr->cmd_len))
-		return -EFAULT;
-
-	/*
-	 * Prime the hdr with good status for scsi commands that don't require
-	 * an nvme command for translation.
-	 */
-	retcode = nvme_trans_status_code(hdr, NVME_SC_SUCCESS);
-	if (retcode)
-		return retcode;
-
-	opcode = cmd[0];
-
-	switch (opcode) {
-	case READ_6:
-	case READ_10:
-	case READ_12:
-	case READ_16:
-		retcode = nvme_trans_io(ns, hdr, 0, cmd);
-		break;
-	case WRITE_6:
-	case WRITE_10:
-	case WRITE_12:
-	case WRITE_16:
-		retcode = nvme_trans_io(ns, hdr, 1, cmd);
-		break;
-	case INQUIRY:
-		retcode = nvme_trans_inquiry(ns, hdr, cmd);
-		break;
-	case LOG_SENSE:
-		retcode = nvme_trans_log_sense(ns, hdr, cmd);
-		break;
-	case MODE_SELECT:
-	case MODE_SELECT_10:
-		retcode = nvme_trans_mode_select(ns, hdr, cmd);
-		break;
-	case MODE_SENSE:
-	case MODE_SENSE_10:
-		retcode = nvme_trans_mode_sense(ns, hdr, cmd);
-		break;
-	case READ_CAPACITY:
-		retcode = nvme_trans_read_capacity(ns, hdr, cmd);
-		break;
-	case SERVICE_ACTION_IN_16:
-		if (IS_READ_CAP_16(cmd))
-			retcode = nvme_trans_read_capacity(ns, hdr, cmd);
-		else
-			goto out;
-		break;
-	case REPORT_LUNS:
-		retcode = nvme_trans_report_luns(ns, hdr, cmd);
-		break;
-	case REQUEST_SENSE:
-		retcode = nvme_trans_request_sense(ns, hdr, cmd);
-		break;
-	case SECURITY_PROTOCOL_IN:
-	case SECURITY_PROTOCOL_OUT:
-		retcode = nvme_trans_security_protocol(ns, hdr, cmd);
-		break;
-	case START_STOP:
-		retcode = nvme_trans_start_stop(ns, hdr, cmd);
-		break;
-	case SYNCHRONIZE_CACHE:
-		retcode = nvme_trans_synchronize_cache(ns, hdr, cmd);
-		break;
-	case FORMAT_UNIT:
-		retcode = nvme_trans_format_unit(ns, hdr, cmd);
-		break;
-	case TEST_UNIT_READY:
-		retcode = nvme_trans_test_unit_ready(ns, hdr, cmd);
-		break;
-	case WRITE_BUFFER:
-		retcode = nvme_trans_write_buffer(ns, hdr, cmd);
-		break;
-	case UNMAP:
-		retcode = nvme_trans_unmap(ns, hdr, cmd);
-		break;
-	default:
- out:
-		retcode = nvme_trans_completion(hdr, SAM_STAT_CHECK_CONDITION,
-				ILLEGAL_REQUEST, SCSI_ASC_ILLEGAL_COMMAND,
-				SCSI_ASCQ_CAUSE_NOT_REPORTABLE);
-		break;
-	}
-	return retcode;
-}
-
-int nvme_sg_io(struct nvme_ns *ns, struct sg_io_hdr __user *u_hdr)
-{
-	struct sg_io_hdr hdr;
-	int retcode;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EACCES;
-	if (copy_from_user(&hdr, u_hdr, sizeof(hdr)))
-		return -EFAULT;
-	if (hdr.interface_id != 'S')
-		return -EINVAL;
-	if (hdr.cmd_len > BLK_MAX_CDB)
-		return -EINVAL;
-
-	retcode = nvme_scsi_translate(ns, &hdr);
-	if (retcode < 0)
-		return retcode;
-	if (retcode > 0)
-		retcode = SNTI_TRANSLATION_SUCCESS;
-	if (copy_to_user(u_hdr, &hdr, sizeof(sg_io_hdr_t)) > 0)
-		return -EFAULT;
-
-	return retcode;
-}
-
-int nvme_sg_get_version_num(int __user *ip)
-{
-	return put_user(sg_version_num, ip);
-}