diff --git a/block/nvme.c b/block/nvme.c
index a786f9e094..2a61e50594 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -22,12 +22,7 @@
 #include "block/block_int.h"
 #include "trace.h"
 
-/* TODO: Move nvme spec definitions from hw/block/nvme.h into a separate file
- * that doesn't depend on dma/pci headers. */
-#include "sysemu/dma.h"
-#include "hw/pci/pci.h"
-#include "hw/block/block.h"
-#include "hw/block/nvme.h"
+#include "block/nvme.h"
 
 #define NVME_SQ_ENTRY_BYTES 64
 #define NVME_CQ_ENTRY_BYTES 16
diff --git a/hw/block/nvme.h b/hw/block/nvme.h
index 6aab338ff5..59a1504018 100644
--- a/hw/block/nvme.h
+++ b/hw/block/nvme.h
@@ -1,703 +1,7 @@
 #ifndef HW_NVME_H
 #define HW_NVME_H
 #include "qemu/cutils.h"
-
-typedef struct NvmeBar {
-    uint64_t    cap;
-    uint32_t    vs;
-    uint32_t    intms;
-    uint32_t    intmc;
-    uint32_t    cc;
-    uint32_t    rsvd1;
-    uint32_t    csts;
-    uint32_t    nssrc;
-    uint32_t    aqa;
-    uint64_t    asq;
-    uint64_t    acq;
-    uint32_t    cmbloc;
-    uint32_t    cmbsz;
-} NvmeBar;
-
-enum NvmeCapShift {
-    CAP_MQES_SHIFT     = 0,
-    CAP_CQR_SHIFT      = 16,
-    CAP_AMS_SHIFT      = 17,
-    CAP_TO_SHIFT       = 24,
-    CAP_DSTRD_SHIFT    = 32,
-    CAP_NSSRS_SHIFT    = 33,
-    CAP_CSS_SHIFT      = 37,
-    CAP_MPSMIN_SHIFT   = 48,
-    CAP_MPSMAX_SHIFT   = 52,
-};
-
-enum NvmeCapMask {
-    CAP_MQES_MASK      = 0xffff,
-    CAP_CQR_MASK       = 0x1,
-    CAP_AMS_MASK       = 0x3,
-    CAP_TO_MASK        = 0xff,
-    CAP_DSTRD_MASK     = 0xf,
-    CAP_NSSRS_MASK     = 0x1,
-    CAP_CSS_MASK       = 0xff,
-    CAP_MPSMIN_MASK    = 0xf,
-    CAP_MPSMAX_MASK    = 0xf,
-};
-
-#define NVME_CAP_MQES(cap)  (((cap) >> CAP_MQES_SHIFT)   & CAP_MQES_MASK)
-#define NVME_CAP_CQR(cap)   (((cap) >> CAP_CQR_SHIFT)    & CAP_CQR_MASK)
-#define NVME_CAP_AMS(cap)   (((cap) >> CAP_AMS_SHIFT)    & CAP_AMS_MASK)
-#define NVME_CAP_TO(cap)    (((cap) >> CAP_TO_SHIFT)     & CAP_TO_MASK)
-#define NVME_CAP_DSTRD(cap) (((cap) >> CAP_DSTRD_SHIFT)  & CAP_DSTRD_MASK)
-#define NVME_CAP_NSSRS(cap) (((cap) >> CAP_NSSRS_SHIFT)  & CAP_NSSRS_MASK)
-#define NVME_CAP_CSS(cap)   (((cap) >> CAP_CSS_SHIFT)    & CAP_CSS_MASK)
-#define NVME_CAP_MPSMIN(cap)(((cap) >> CAP_MPSMIN_SHIFT) & CAP_MPSMIN_MASK)
-#define NVME_CAP_MPSMAX(cap)(((cap) >> CAP_MPSMAX_SHIFT) & CAP_MPSMAX_MASK)
-
-#define NVME_CAP_SET_MQES(cap, val)   (cap |= (uint64_t)(val & CAP_MQES_MASK)  \
-                                                           << CAP_MQES_SHIFT)
-#define NVME_CAP_SET_CQR(cap, val)    (cap |= (uint64_t)(val & CAP_CQR_MASK)   \
-                                                           << CAP_CQR_SHIFT)
-#define NVME_CAP_SET_AMS(cap, val)    (cap |= (uint64_t)(val & CAP_AMS_MASK)   \
-                                                           << CAP_AMS_SHIFT)
-#define NVME_CAP_SET_TO(cap, val)     (cap |= (uint64_t)(val & CAP_TO_MASK)    \
-                                                           << CAP_TO_SHIFT)
-#define NVME_CAP_SET_DSTRD(cap, val)  (cap |= (uint64_t)(val & CAP_DSTRD_MASK) \
-                                                           << CAP_DSTRD_SHIFT)
-#define NVME_CAP_SET_NSSRS(cap, val)  (cap |= (uint64_t)(val & CAP_NSSRS_MASK) \
-                                                           << CAP_NSSRS_SHIFT)
-#define NVME_CAP_SET_CSS(cap, val)    (cap |= (uint64_t)(val & CAP_CSS_MASK)   \
-                                                           << CAP_CSS_SHIFT)
-#define NVME_CAP_SET_MPSMIN(cap, val) (cap |= (uint64_t)(val & CAP_MPSMIN_MASK)\
-                                                           << CAP_MPSMIN_SHIFT)
-#define NVME_CAP_SET_MPSMAX(cap, val) (cap |= (uint64_t)(val & CAP_MPSMAX_MASK)\
-                                                            << CAP_MPSMAX_SHIFT)
-
-enum NvmeCcShift {
-    CC_EN_SHIFT     = 0,
-    CC_CSS_SHIFT    = 4,
-    CC_MPS_SHIFT    = 7,
-    CC_AMS_SHIFT    = 11,
-    CC_SHN_SHIFT    = 14,
-    CC_IOSQES_SHIFT = 16,
-    CC_IOCQES_SHIFT = 20,
-};
-
-enum NvmeCcMask {
-    CC_EN_MASK      = 0x1,
-    CC_CSS_MASK     = 0x7,
-    CC_MPS_MASK     = 0xf,
-    CC_AMS_MASK     = 0x7,
-    CC_SHN_MASK     = 0x3,
-    CC_IOSQES_MASK  = 0xf,
-    CC_IOCQES_MASK  = 0xf,
-};
-
-#define NVME_CC_EN(cc)     ((cc >> CC_EN_SHIFT)     & CC_EN_MASK)
-#define NVME_CC_CSS(cc)    ((cc >> CC_CSS_SHIFT)    & CC_CSS_MASK)
-#define NVME_CC_MPS(cc)    ((cc >> CC_MPS_SHIFT)    & CC_MPS_MASK)
-#define NVME_CC_AMS(cc)    ((cc >> CC_AMS_SHIFT)    & CC_AMS_MASK)
-#define NVME_CC_SHN(cc)    ((cc >> CC_SHN_SHIFT)    & CC_SHN_MASK)
-#define NVME_CC_IOSQES(cc) ((cc >> CC_IOSQES_SHIFT) & CC_IOSQES_MASK)
-#define NVME_CC_IOCQES(cc) ((cc >> CC_IOCQES_SHIFT) & CC_IOCQES_MASK)
-
-enum NvmeCstsShift {
-    CSTS_RDY_SHIFT      = 0,
-    CSTS_CFS_SHIFT      = 1,
-    CSTS_SHST_SHIFT     = 2,
-    CSTS_NSSRO_SHIFT    = 4,
-};
-
-enum NvmeCstsMask {
-    CSTS_RDY_MASK   = 0x1,
-    CSTS_CFS_MASK   = 0x1,
-    CSTS_SHST_MASK  = 0x3,
-    CSTS_NSSRO_MASK = 0x1,
-};
-
-enum NvmeCsts {
-    NVME_CSTS_READY         = 1 << CSTS_RDY_SHIFT,
-    NVME_CSTS_FAILED        = 1 << CSTS_CFS_SHIFT,
-    NVME_CSTS_SHST_NORMAL   = 0 << CSTS_SHST_SHIFT,
-    NVME_CSTS_SHST_PROGRESS = 1 << CSTS_SHST_SHIFT,
-    NVME_CSTS_SHST_COMPLETE = 2 << CSTS_SHST_SHIFT,
-    NVME_CSTS_NSSRO         = 1 << CSTS_NSSRO_SHIFT,
-};
-
-#define NVME_CSTS_RDY(csts)     ((csts >> CSTS_RDY_SHIFT)   & CSTS_RDY_MASK)
-#define NVME_CSTS_CFS(csts)     ((csts >> CSTS_CFS_SHIFT)   & CSTS_CFS_MASK)
-#define NVME_CSTS_SHST(csts)    ((csts >> CSTS_SHST_SHIFT)  & CSTS_SHST_MASK)
-#define NVME_CSTS_NSSRO(csts)   ((csts >> CSTS_NSSRO_SHIFT) & CSTS_NSSRO_MASK)
-
-enum NvmeAqaShift {
-    AQA_ASQS_SHIFT  = 0,
-    AQA_ACQS_SHIFT  = 16,
-};
-
-enum NvmeAqaMask {
-    AQA_ASQS_MASK   = 0xfff,
-    AQA_ACQS_MASK   = 0xfff,
-};
-
-#define NVME_AQA_ASQS(aqa) ((aqa >> AQA_ASQS_SHIFT) & AQA_ASQS_MASK)
-#define NVME_AQA_ACQS(aqa) ((aqa >> AQA_ACQS_SHIFT) & AQA_ACQS_MASK)
-
-enum NvmeCmblocShift {
-    CMBLOC_BIR_SHIFT  = 0,
-    CMBLOC_OFST_SHIFT = 12,
-};
-
-enum NvmeCmblocMask {
-    CMBLOC_BIR_MASK  = 0x7,
-    CMBLOC_OFST_MASK = 0xfffff,
-};
-
-#define NVME_CMBLOC_BIR(cmbloc) ((cmbloc >> CMBLOC_BIR_SHIFT)  & \
-                                 CMBLOC_BIR_MASK)
-#define NVME_CMBLOC_OFST(cmbloc)((cmbloc >> CMBLOC_OFST_SHIFT) & \
-                                 CMBLOC_OFST_MASK)
-
-#define NVME_CMBLOC_SET_BIR(cmbloc, val)  \
-    (cmbloc |= (uint64_t)(val & CMBLOC_BIR_MASK) << CMBLOC_BIR_SHIFT)
-#define NVME_CMBLOC_SET_OFST(cmbloc, val) \
-    (cmbloc |= (uint64_t)(val & CMBLOC_OFST_MASK) << CMBLOC_OFST_SHIFT)
-
-enum NvmeCmbszShift {
-    CMBSZ_SQS_SHIFT   = 0,
-    CMBSZ_CQS_SHIFT   = 1,
-    CMBSZ_LISTS_SHIFT = 2,
-    CMBSZ_RDS_SHIFT   = 3,
-    CMBSZ_WDS_SHIFT   = 4,
-    CMBSZ_SZU_SHIFT   = 8,
-    CMBSZ_SZ_SHIFT    = 12,
-};
-
-enum NvmeCmbszMask {
-    CMBSZ_SQS_MASK   = 0x1,
-    CMBSZ_CQS_MASK   = 0x1,
-    CMBSZ_LISTS_MASK = 0x1,
-    CMBSZ_RDS_MASK   = 0x1,
-    CMBSZ_WDS_MASK   = 0x1,
-    CMBSZ_SZU_MASK   = 0xf,
-    CMBSZ_SZ_MASK    = 0xfffff,
-};
-
-#define NVME_CMBSZ_SQS(cmbsz)  ((cmbsz >> CMBSZ_SQS_SHIFT)   & CMBSZ_SQS_MASK)
-#define NVME_CMBSZ_CQS(cmbsz)  ((cmbsz >> CMBSZ_CQS_SHIFT)   & CMBSZ_CQS_MASK)
-#define NVME_CMBSZ_LISTS(cmbsz)((cmbsz >> CMBSZ_LISTS_SHIFT) & CMBSZ_LISTS_MASK)
-#define NVME_CMBSZ_RDS(cmbsz)  ((cmbsz >> CMBSZ_RDS_SHIFT)   & CMBSZ_RDS_MASK)
-#define NVME_CMBSZ_WDS(cmbsz)  ((cmbsz >> CMBSZ_WDS_SHIFT)   & CMBSZ_WDS_MASK)
-#define NVME_CMBSZ_SZU(cmbsz)  ((cmbsz >> CMBSZ_SZU_SHIFT)   & CMBSZ_SZU_MASK)
-#define NVME_CMBSZ_SZ(cmbsz)   ((cmbsz >> CMBSZ_SZ_SHIFT)    & CMBSZ_SZ_MASK)
-
-#define NVME_CMBSZ_SET_SQS(cmbsz, val)   \
-    (cmbsz |= (uint64_t)(val &  CMBSZ_SQS_MASK)  << CMBSZ_SQS_SHIFT)
-#define NVME_CMBSZ_SET_CQS(cmbsz, val)   \
-    (cmbsz |= (uint64_t)(val & CMBSZ_CQS_MASK) << CMBSZ_CQS_SHIFT)
-#define NVME_CMBSZ_SET_LISTS(cmbsz, val) \
-    (cmbsz |= (uint64_t)(val & CMBSZ_LISTS_MASK) << CMBSZ_LISTS_SHIFT)
-#define NVME_CMBSZ_SET_RDS(cmbsz, val)   \
-    (cmbsz |= (uint64_t)(val & CMBSZ_RDS_MASK) << CMBSZ_RDS_SHIFT)
-#define NVME_CMBSZ_SET_WDS(cmbsz, val)   \
-    (cmbsz |= (uint64_t)(val & CMBSZ_WDS_MASK) << CMBSZ_WDS_SHIFT)
-#define NVME_CMBSZ_SET_SZU(cmbsz, val)   \
-    (cmbsz |= (uint64_t)(val & CMBSZ_SZU_MASK) << CMBSZ_SZU_SHIFT)
-#define NVME_CMBSZ_SET_SZ(cmbsz, val)    \
-    (cmbsz |= (uint64_t)(val & CMBSZ_SZ_MASK) << CMBSZ_SZ_SHIFT)
-
-#define NVME_CMBSZ_GETSIZE(cmbsz) \
-    (NVME_CMBSZ_SZ(cmbsz) * (1 << (12 + 4 * NVME_CMBSZ_SZU(cmbsz))))
-
-typedef struct NvmeCmd {
-    uint8_t     opcode;
-    uint8_t     fuse;
-    uint16_t    cid;
-    uint32_t    nsid;
-    uint64_t    res1;
-    uint64_t    mptr;
-    uint64_t    prp1;
-    uint64_t    prp2;
-    uint32_t    cdw10;
-    uint32_t    cdw11;
-    uint32_t    cdw12;
-    uint32_t    cdw13;
-    uint32_t    cdw14;
-    uint32_t    cdw15;
-} NvmeCmd;
-
-enum NvmeAdminCommands {
-    NVME_ADM_CMD_DELETE_SQ      = 0x00,
-    NVME_ADM_CMD_CREATE_SQ      = 0x01,
-    NVME_ADM_CMD_GET_LOG_PAGE   = 0x02,
-    NVME_ADM_CMD_DELETE_CQ      = 0x04,
-    NVME_ADM_CMD_CREATE_CQ      = 0x05,
-    NVME_ADM_CMD_IDENTIFY       = 0x06,
-    NVME_ADM_CMD_ABORT          = 0x08,
-    NVME_ADM_CMD_SET_FEATURES   = 0x09,
-    NVME_ADM_CMD_GET_FEATURES   = 0x0a,
-    NVME_ADM_CMD_ASYNC_EV_REQ   = 0x0c,
-    NVME_ADM_CMD_ACTIVATE_FW    = 0x10,
-    NVME_ADM_CMD_DOWNLOAD_FW    = 0x11,
-    NVME_ADM_CMD_FORMAT_NVM     = 0x80,
-    NVME_ADM_CMD_SECURITY_SEND  = 0x81,
-    NVME_ADM_CMD_SECURITY_RECV  = 0x82,
-};
-
-enum NvmeIoCommands {
-    NVME_CMD_FLUSH              = 0x00,
-    NVME_CMD_WRITE              = 0x01,
-    NVME_CMD_READ               = 0x02,
-    NVME_CMD_WRITE_UNCOR        = 0x04,
-    NVME_CMD_COMPARE            = 0x05,
-    NVME_CMD_WRITE_ZEROS        = 0x08,
-    NVME_CMD_DSM                = 0x09,
-};
-
-typedef struct NvmeDeleteQ {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    rsvd1[9];
-    uint16_t    qid;
-    uint16_t    rsvd10;
-    uint32_t    rsvd11[5];
-} NvmeDeleteQ;
-
-typedef struct NvmeCreateCq {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    rsvd1[5];
-    uint64_t    prp1;
-    uint64_t    rsvd8;
-    uint16_t    cqid;
-    uint16_t    qsize;
-    uint16_t    cq_flags;
-    uint16_t    irq_vector;
-    uint32_t    rsvd12[4];
-} NvmeCreateCq;
-
-#define NVME_CQ_FLAGS_PC(cq_flags)  (cq_flags & 0x1)
-#define NVME_CQ_FLAGS_IEN(cq_flags) ((cq_flags >> 1) & 0x1)
-
-typedef struct NvmeCreateSq {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    rsvd1[5];
-    uint64_t    prp1;
-    uint64_t    rsvd8;
-    uint16_t    sqid;
-    uint16_t    qsize;
-    uint16_t    sq_flags;
-    uint16_t    cqid;
-    uint32_t    rsvd12[4];
-} NvmeCreateSq;
-
-#define NVME_SQ_FLAGS_PC(sq_flags)      (sq_flags & 0x1)
-#define NVME_SQ_FLAGS_QPRIO(sq_flags)   ((sq_flags >> 1) & 0x3)
-
-enum NvmeQueueFlags {
-    NVME_Q_PC           = 1,
-    NVME_Q_PRIO_URGENT  = 0,
-    NVME_Q_PRIO_HIGH    = 1,
-    NVME_Q_PRIO_NORMAL  = 2,
-    NVME_Q_PRIO_LOW     = 3,
-};
-
-typedef struct NvmeIdentify {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    nsid;
-    uint64_t    rsvd2[2];
-    uint64_t    prp1;
-    uint64_t    prp2;
-    uint32_t    cns;
-    uint32_t    rsvd11[5];
-} NvmeIdentify;
-
-typedef struct NvmeRwCmd {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    nsid;
-    uint64_t    rsvd2;
-    uint64_t    mptr;
-    uint64_t    prp1;
-    uint64_t    prp2;
-    uint64_t    slba;
-    uint16_t    nlb;
-    uint16_t    control;
-    uint32_t    dsmgmt;
-    uint32_t    reftag;
-    uint16_t    apptag;
-    uint16_t    appmask;
-} NvmeRwCmd;
-
-enum {
-    NVME_RW_LR                  = 1 << 15,
-    NVME_RW_FUA                 = 1 << 14,
-    NVME_RW_DSM_FREQ_UNSPEC     = 0,
-    NVME_RW_DSM_FREQ_TYPICAL    = 1,
-    NVME_RW_DSM_FREQ_RARE       = 2,
-    NVME_RW_DSM_FREQ_READS      = 3,
-    NVME_RW_DSM_FREQ_WRITES     = 4,
-    NVME_RW_DSM_FREQ_RW         = 5,
-    NVME_RW_DSM_FREQ_ONCE       = 6,
-    NVME_RW_DSM_FREQ_PREFETCH   = 7,
-    NVME_RW_DSM_FREQ_TEMP       = 8,
-    NVME_RW_DSM_LATENCY_NONE    = 0 << 4,
-    NVME_RW_DSM_LATENCY_IDLE    = 1 << 4,
-    NVME_RW_DSM_LATENCY_NORM    = 2 << 4,
-    NVME_RW_DSM_LATENCY_LOW     = 3 << 4,
-    NVME_RW_DSM_SEQ_REQ         = 1 << 6,
-    NVME_RW_DSM_COMPRESSED      = 1 << 7,
-    NVME_RW_PRINFO_PRACT        = 1 << 13,
-    NVME_RW_PRINFO_PRCHK_GUARD  = 1 << 12,
-    NVME_RW_PRINFO_PRCHK_APP    = 1 << 11,
-    NVME_RW_PRINFO_PRCHK_REF    = 1 << 10,
-};
-
-typedef struct NvmeDsmCmd {
-    uint8_t     opcode;
-    uint8_t     flags;
-    uint16_t    cid;
-    uint32_t    nsid;
-    uint64_t    rsvd2[2];
-    uint64_t    prp1;
-    uint64_t    prp2;
-    uint32_t    nr;
-    uint32_t    attributes;
-    uint32_t    rsvd12[4];
-} NvmeDsmCmd;
-
-enum {
-    NVME_DSMGMT_IDR = 1 << 0,
-    NVME_DSMGMT_IDW = 1 << 1,
-    NVME_DSMGMT_AD  = 1 << 2,
-};
-
-typedef struct NvmeDsmRange {
-    uint32_t    cattr;
-    uint32_t    nlb;
-    uint64_t    slba;
-} NvmeDsmRange;
-
-enum NvmeAsyncEventRequest {
-    NVME_AER_TYPE_ERROR                     = 0,
-    NVME_AER_TYPE_SMART                     = 1,
-    NVME_AER_TYPE_IO_SPECIFIC               = 6,
-    NVME_AER_TYPE_VENDOR_SPECIFIC           = 7,
-    NVME_AER_INFO_ERR_INVALID_SQ            = 0,
-    NVME_AER_INFO_ERR_INVALID_DB            = 1,
-    NVME_AER_INFO_ERR_DIAG_FAIL             = 2,
-    NVME_AER_INFO_ERR_PERS_INTERNAL_ERR     = 3,
-    NVME_AER_INFO_ERR_TRANS_INTERNAL_ERR    = 4,
-    NVME_AER_INFO_ERR_FW_IMG_LOAD_ERR       = 5,
-    NVME_AER_INFO_SMART_RELIABILITY         = 0,
-    NVME_AER_INFO_SMART_TEMP_THRESH         = 1,
-    NVME_AER_INFO_SMART_SPARE_THRESH        = 2,
-};
-
-typedef struct NvmeAerResult {
-    uint8_t event_type;
-    uint8_t event_info;
-    uint8_t log_page;
-    uint8_t resv;
-} NvmeAerResult;
-
-typedef struct NvmeCqe {
-    uint32_t    result;
-    uint32_t    rsvd;
-    uint16_t    sq_head;
-    uint16_t    sq_id;
-    uint16_t    cid;
-    uint16_t    status;
-} NvmeCqe;
-
-enum NvmeStatusCodes {
-    NVME_SUCCESS                = 0x0000,
-    NVME_INVALID_OPCODE         = 0x0001,
-    NVME_INVALID_FIELD          = 0x0002,
-    NVME_CID_CONFLICT           = 0x0003,
-    NVME_DATA_TRAS_ERROR        = 0x0004,
-    NVME_POWER_LOSS_ABORT       = 0x0005,
-    NVME_INTERNAL_DEV_ERROR     = 0x0006,
-    NVME_CMD_ABORT_REQ          = 0x0007,
-    NVME_CMD_ABORT_SQ_DEL       = 0x0008,
-    NVME_CMD_ABORT_FAILED_FUSE  = 0x0009,
-    NVME_CMD_ABORT_MISSING_FUSE = 0x000a,
-    NVME_INVALID_NSID           = 0x000b,
-    NVME_CMD_SEQ_ERROR          = 0x000c,
-    NVME_LBA_RANGE              = 0x0080,
-    NVME_CAP_EXCEEDED           = 0x0081,
-    NVME_NS_NOT_READY           = 0x0082,
-    NVME_NS_RESV_CONFLICT       = 0x0083,
-    NVME_INVALID_CQID           = 0x0100,
-    NVME_INVALID_QID            = 0x0101,
-    NVME_MAX_QSIZE_EXCEEDED     = 0x0102,
-    NVME_ACL_EXCEEDED           = 0x0103,
-    NVME_RESERVED               = 0x0104,
-    NVME_AER_LIMIT_EXCEEDED     = 0x0105,
-    NVME_INVALID_FW_SLOT        = 0x0106,
-    NVME_INVALID_FW_IMAGE       = 0x0107,
-    NVME_INVALID_IRQ_VECTOR     = 0x0108,
-    NVME_INVALID_LOG_ID         = 0x0109,
-    NVME_INVALID_FORMAT         = 0x010a,
-    NVME_FW_REQ_RESET           = 0x010b,
-    NVME_INVALID_QUEUE_DEL      = 0x010c,
-    NVME_FID_NOT_SAVEABLE       = 0x010d,
-    NVME_FID_NOT_NSID_SPEC      = 0x010f,
-    NVME_FW_REQ_SUSYSTEM_RESET  = 0x0110,
-    NVME_CONFLICTING_ATTRS      = 0x0180,
-    NVME_INVALID_PROT_INFO      = 0x0181,
-    NVME_WRITE_TO_RO            = 0x0182,
-    NVME_WRITE_FAULT            = 0x0280,
-    NVME_UNRECOVERED_READ       = 0x0281,
-    NVME_E2E_GUARD_ERROR        = 0x0282,
-    NVME_E2E_APP_ERROR          = 0x0283,
-    NVME_E2E_REF_ERROR          = 0x0284,
-    NVME_CMP_FAILURE            = 0x0285,
-    NVME_ACCESS_DENIED          = 0x0286,
-    NVME_MORE                   = 0x2000,
-    NVME_DNR                    = 0x4000,
-    NVME_NO_COMPLETE            = 0xffff,
-};
-
-typedef struct NvmeFwSlotInfoLog {
-    uint8_t     afi;
-    uint8_t     reserved1[7];
-    uint8_t     frs1[8];
-    uint8_t     frs2[8];
-    uint8_t     frs3[8];
-    uint8_t     frs4[8];
-    uint8_t     frs5[8];
-    uint8_t     frs6[8];
-    uint8_t     frs7[8];
-    uint8_t     reserved2[448];
-} NvmeFwSlotInfoLog;
-
-typedef struct NvmeErrorLog {
-    uint64_t    error_count;
-    uint16_t    sqid;
-    uint16_t    cid;
-    uint16_t    status_field;
-    uint16_t    param_error_location;
-    uint64_t    lba;
-    uint32_t    nsid;
-    uint8_t     vs;
-    uint8_t     resv[35];
-} NvmeErrorLog;
-
-typedef struct NvmeSmartLog {
-    uint8_t     critical_warning;
-    uint8_t     temperature[2];
-    uint8_t     available_spare;
-    uint8_t     available_spare_threshold;
-    uint8_t     percentage_used;
-    uint8_t     reserved1[26];
-    uint64_t    data_units_read[2];
-    uint64_t    data_units_written[2];
-    uint64_t    host_read_commands[2];
-    uint64_t    host_write_commands[2];
-    uint64_t    controller_busy_time[2];
-    uint64_t    power_cycles[2];
-    uint64_t    power_on_hours[2];
-    uint64_t    unsafe_shutdowns[2];
-    uint64_t    media_errors[2];
-    uint64_t    number_of_error_log_entries[2];
-    uint8_t     reserved2[320];
-} NvmeSmartLog;
-
-enum NvmeSmartWarn {
-    NVME_SMART_SPARE                  = 1 << 0,
-    NVME_SMART_TEMPERATURE            = 1 << 1,
-    NVME_SMART_RELIABILITY            = 1 << 2,
-    NVME_SMART_MEDIA_READ_ONLY        = 1 << 3,
-    NVME_SMART_FAILED_VOLATILE_MEDIA  = 1 << 4,
-};
-
-enum LogIdentifier {
-    NVME_LOG_ERROR_INFO     = 0x01,
-    NVME_LOG_SMART_INFO     = 0x02,
-    NVME_LOG_FW_SLOT_INFO   = 0x03,
-};
-
-typedef struct NvmePSD {
-    uint16_t    mp;
-    uint16_t    reserved;
-    uint32_t    enlat;
-    uint32_t    exlat;
-    uint8_t     rrt;
-    uint8_t     rrl;
-    uint8_t     rwt;
-    uint8_t     rwl;
-    uint8_t     resv[16];
-} NvmePSD;
-
-typedef struct NvmeIdCtrl {
-    uint16_t    vid;
-    uint16_t    ssvid;
-    uint8_t     sn[20];
-    uint8_t     mn[40];
-    uint8_t     fr[8];
-    uint8_t     rab;
-    uint8_t     ieee[3];
-    uint8_t     cmic;
-    uint8_t     mdts;
-    uint8_t     rsvd255[178];
-    uint16_t    oacs;
-    uint8_t     acl;
-    uint8_t     aerl;
-    uint8_t     frmw;
-    uint8_t     lpa;
-    uint8_t     elpe;
-    uint8_t     npss;
-    uint8_t     rsvd511[248];
-    uint8_t     sqes;
-    uint8_t     cqes;
-    uint16_t    rsvd515;
-    uint32_t    nn;
-    uint16_t    oncs;
-    uint16_t    fuses;
-    uint8_t     fna;
-    uint8_t     vwc;
-    uint16_t    awun;
-    uint16_t    awupf;
-    uint8_t     rsvd703[174];
-    uint8_t     rsvd2047[1344];
-    NvmePSD     psd[32];
-    uint8_t     vs[1024];
-} NvmeIdCtrl;
-
-enum NvmeIdCtrlOacs {
-    NVME_OACS_SECURITY  = 1 << 0,
-    NVME_OACS_FORMAT    = 1 << 1,
-    NVME_OACS_FW        = 1 << 2,
-};
-
-enum NvmeIdCtrlOncs {
-    NVME_ONCS_COMPARE       = 1 << 0,
-    NVME_ONCS_WRITE_UNCORR  = 1 << 1,
-    NVME_ONCS_DSM           = 1 << 2,
-    NVME_ONCS_WRITE_ZEROS   = 1 << 3,
-    NVME_ONCS_FEATURES      = 1 << 4,
-    NVME_ONCS_RESRVATIONS   = 1 << 5,
-};
-
-#define NVME_CTRL_SQES_MIN(sqes) ((sqes) & 0xf)
-#define NVME_CTRL_SQES_MAX(sqes) (((sqes) >> 4) & 0xf)
-#define NVME_CTRL_CQES_MIN(cqes) ((cqes) & 0xf)
-#define NVME_CTRL_CQES_MAX(cqes) (((cqes) >> 4) & 0xf)
-
-typedef struct NvmeFeatureVal {
-    uint32_t    arbitration;
-    uint32_t    power_mgmt;
-    uint32_t    temp_thresh;
-    uint32_t    err_rec;
-    uint32_t    volatile_wc;
-    uint32_t    num_queues;
-    uint32_t    int_coalescing;
-    uint32_t    *int_vector_config;
-    uint32_t    write_atomicity;
-    uint32_t    async_config;
-    uint32_t    sw_prog_marker;
-} NvmeFeatureVal;
-
-#define NVME_ARB_AB(arb)    (arb & 0x7)
-#define NVME_ARB_LPW(arb)   ((arb >> 8) & 0xff)
-#define NVME_ARB_MPW(arb)   ((arb >> 16) & 0xff)
-#define NVME_ARB_HPW(arb)   ((arb >> 24) & 0xff)
-
-#define NVME_INTC_THR(intc)     (intc & 0xff)
-#define NVME_INTC_TIME(intc)    ((intc >> 8) & 0xff)
-
-enum NvmeFeatureIds {
-    NVME_ARBITRATION                = 0x1,
-    NVME_POWER_MANAGEMENT           = 0x2,
-    NVME_LBA_RANGE_TYPE             = 0x3,
-    NVME_TEMPERATURE_THRESHOLD      = 0x4,
-    NVME_ERROR_RECOVERY             = 0x5,
-    NVME_VOLATILE_WRITE_CACHE       = 0x6,
-    NVME_NUMBER_OF_QUEUES           = 0x7,
-    NVME_INTERRUPT_COALESCING       = 0x8,
-    NVME_INTERRUPT_VECTOR_CONF      = 0x9,
-    NVME_WRITE_ATOMICITY            = 0xa,
-    NVME_ASYNCHRONOUS_EVENT_CONF    = 0xb,
-    NVME_SOFTWARE_PROGRESS_MARKER   = 0x80
-};
-
-typedef struct NvmeRangeType {
-    uint8_t     type;
-    uint8_t     attributes;
-    uint8_t     rsvd2[14];
-    uint64_t    slba;
-    uint64_t    nlb;
-    uint8_t     guid[16];
-    uint8_t     rsvd48[16];
-} NvmeRangeType;
-
-typedef struct NvmeLBAF {
-    uint16_t    ms;
-    uint8_t     ds;
-    uint8_t     rp;
-} NvmeLBAF;
-
-typedef struct NvmeIdNs {
-    uint64_t    nsze;
-    uint64_t    ncap;
-    uint64_t    nuse;
-    uint8_t     nsfeat;
-    uint8_t     nlbaf;
-    uint8_t     flbas;
-    uint8_t     mc;
-    uint8_t     dpc;
-    uint8_t     dps;
-    uint8_t     res30[98];
-    NvmeLBAF    lbaf[16];
-    uint8_t     res192[192];
-    uint8_t     vs[3712];
-} NvmeIdNs;
-
-#define NVME_ID_NS_NSFEAT_THIN(nsfeat)      ((nsfeat & 0x1))
-#define NVME_ID_NS_FLBAS_EXTENDED(flbas)    ((flbas >> 4) & 0x1)
-#define NVME_ID_NS_FLBAS_INDEX(flbas)       ((flbas & 0xf))
-#define NVME_ID_NS_MC_SEPARATE(mc)          ((mc >> 1) & 0x1)
-#define NVME_ID_NS_MC_EXTENDED(mc)          ((mc & 0x1))
-#define NVME_ID_NS_DPC_LAST_EIGHT(dpc)      ((dpc >> 4) & 0x1)
-#define NVME_ID_NS_DPC_FIRST_EIGHT(dpc)     ((dpc >> 3) & 0x1)
-#define NVME_ID_NS_DPC_TYPE_3(dpc)          ((dpc >> 2) & 0x1)
-#define NVME_ID_NS_DPC_TYPE_2(dpc)          ((dpc >> 1) & 0x1)
-#define NVME_ID_NS_DPC_TYPE_1(dpc)          ((dpc & 0x1))
-#define NVME_ID_NS_DPC_TYPE_MASK            0x7
-
-enum NvmeIdNsDps {
-    DPS_TYPE_NONE   = 0,
-    DPS_TYPE_1      = 1,
-    DPS_TYPE_2      = 2,
-    DPS_TYPE_3      = 3,
-    DPS_TYPE_MASK   = 0x7,
-    DPS_FIRST_EIGHT = 8,
-};
-
-static inline void _nvme_check_size(void)
-{
-    QEMU_BUILD_BUG_ON(sizeof(NvmeAerResult) != 4);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeCqe) != 16);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeDsmRange) != 16);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeCmd) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeDeleteQ) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeCreateCq) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeCreateSq) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeIdentify) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeRwCmd) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeDsmCmd) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeRangeType) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeErrorLog) != 64);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeFwSlotInfoLog) != 512);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeSmartLog) != 512);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeIdCtrl) != 4096);
-    QEMU_BUILD_BUG_ON(sizeof(NvmeIdNs) != 4096);
-}
+#include "block/nvme.h"
 
 typedef struct NvmeAsyncEvent {
     QSIMPLEQ_ENTRY(NvmeAsyncEvent) entry;
diff --git a/include/block/nvme.h b/include/block/nvme.h
new file mode 100644
index 0000000000..849a6f3fa3
--- /dev/null
+++ b/include/block/nvme.h
@@ -0,0 +1,700 @@
+#ifndef BLOCK_NVME_H
+#define BLOCK_NVME_H
+
+typedef struct NvmeBar {
+    uint64_t    cap;
+    uint32_t    vs;
+    uint32_t    intms;
+    uint32_t    intmc;
+    uint32_t    cc;
+    uint32_t    rsvd1;
+    uint32_t    csts;
+    uint32_t    nssrc;
+    uint32_t    aqa;
+    uint64_t    asq;
+    uint64_t    acq;
+    uint32_t    cmbloc;
+    uint32_t    cmbsz;
+} NvmeBar;
+
+enum NvmeCapShift {
+    CAP_MQES_SHIFT     = 0,
+    CAP_CQR_SHIFT      = 16,
+    CAP_AMS_SHIFT      = 17,
+    CAP_TO_SHIFT       = 24,
+    CAP_DSTRD_SHIFT    = 32,
+    CAP_NSSRS_SHIFT    = 33,
+    CAP_CSS_SHIFT      = 37,
+    CAP_MPSMIN_SHIFT   = 48,
+    CAP_MPSMAX_SHIFT   = 52,
+};
+
+enum NvmeCapMask {
+    CAP_MQES_MASK      = 0xffff,
+    CAP_CQR_MASK       = 0x1,
+    CAP_AMS_MASK       = 0x3,
+    CAP_TO_MASK        = 0xff,
+    CAP_DSTRD_MASK     = 0xf,
+    CAP_NSSRS_MASK     = 0x1,
+    CAP_CSS_MASK       = 0xff,
+    CAP_MPSMIN_MASK    = 0xf,
+    CAP_MPSMAX_MASK    = 0xf,
+};
+
+#define NVME_CAP_MQES(cap)  (((cap) >> CAP_MQES_SHIFT)   & CAP_MQES_MASK)
+#define NVME_CAP_CQR(cap)   (((cap) >> CAP_CQR_SHIFT)    & CAP_CQR_MASK)
+#define NVME_CAP_AMS(cap)   (((cap) >> CAP_AMS_SHIFT)    & CAP_AMS_MASK)
+#define NVME_CAP_TO(cap)    (((cap) >> CAP_TO_SHIFT)     & CAP_TO_MASK)
+#define NVME_CAP_DSTRD(cap) (((cap) >> CAP_DSTRD_SHIFT)  & CAP_DSTRD_MASK)
+#define NVME_CAP_NSSRS(cap) (((cap) >> CAP_NSSRS_SHIFT)  & CAP_NSSRS_MASK)
+#define NVME_CAP_CSS(cap)   (((cap) >> CAP_CSS_SHIFT)    & CAP_CSS_MASK)
+#define NVME_CAP_MPSMIN(cap)(((cap) >> CAP_MPSMIN_SHIFT) & CAP_MPSMIN_MASK)
+#define NVME_CAP_MPSMAX(cap)(((cap) >> CAP_MPSMAX_SHIFT) & CAP_MPSMAX_MASK)
+
+#define NVME_CAP_SET_MQES(cap, val)   (cap |= (uint64_t)(val & CAP_MQES_MASK)  \
+                                                           << CAP_MQES_SHIFT)
+#define NVME_CAP_SET_CQR(cap, val)    (cap |= (uint64_t)(val & CAP_CQR_MASK)   \
+                                                           << CAP_CQR_SHIFT)
+#define NVME_CAP_SET_AMS(cap, val)    (cap |= (uint64_t)(val & CAP_AMS_MASK)   \
+                                                           << CAP_AMS_SHIFT)
+#define NVME_CAP_SET_TO(cap, val)     (cap |= (uint64_t)(val & CAP_TO_MASK)    \
+                                                           << CAP_TO_SHIFT)
+#define NVME_CAP_SET_DSTRD(cap, val)  (cap |= (uint64_t)(val & CAP_DSTRD_MASK) \
+                                                           << CAP_DSTRD_SHIFT)
+#define NVME_CAP_SET_NSSRS(cap, val)  (cap |= (uint64_t)(val & CAP_NSSRS_MASK) \
+                                                           << CAP_NSSRS_SHIFT)
+#define NVME_CAP_SET_CSS(cap, val)    (cap |= (uint64_t)(val & CAP_CSS_MASK)   \
+                                                           << CAP_CSS_SHIFT)
+#define NVME_CAP_SET_MPSMIN(cap, val) (cap |= (uint64_t)(val & CAP_MPSMIN_MASK)\
+                                                           << CAP_MPSMIN_SHIFT)
+#define NVME_CAP_SET_MPSMAX(cap, val) (cap |= (uint64_t)(val & CAP_MPSMAX_MASK)\
+                                                            << CAP_MPSMAX_SHIFT)
+
+enum NvmeCcShift {
+    CC_EN_SHIFT     = 0,
+    CC_CSS_SHIFT    = 4,
+    CC_MPS_SHIFT    = 7,
+    CC_AMS_SHIFT    = 11,
+    CC_SHN_SHIFT    = 14,
+    CC_IOSQES_SHIFT = 16,
+    CC_IOCQES_SHIFT = 20,
+};
+
+enum NvmeCcMask {
+    CC_EN_MASK      = 0x1,
+    CC_CSS_MASK     = 0x7,
+    CC_MPS_MASK     = 0xf,
+    CC_AMS_MASK     = 0x7,
+    CC_SHN_MASK     = 0x3,
+    CC_IOSQES_MASK  = 0xf,
+    CC_IOCQES_MASK  = 0xf,
+};
+
+#define NVME_CC_EN(cc)     ((cc >> CC_EN_SHIFT)     & CC_EN_MASK)
+#define NVME_CC_CSS(cc)    ((cc >> CC_CSS_SHIFT)    & CC_CSS_MASK)
+#define NVME_CC_MPS(cc)    ((cc >> CC_MPS_SHIFT)    & CC_MPS_MASK)
+#define NVME_CC_AMS(cc)    ((cc >> CC_AMS_SHIFT)    & CC_AMS_MASK)
+#define NVME_CC_SHN(cc)    ((cc >> CC_SHN_SHIFT)    & CC_SHN_MASK)
+#define NVME_CC_IOSQES(cc) ((cc >> CC_IOSQES_SHIFT) & CC_IOSQES_MASK)
+#define NVME_CC_IOCQES(cc) ((cc >> CC_IOCQES_SHIFT) & CC_IOCQES_MASK)
+
+enum NvmeCstsShift {
+    CSTS_RDY_SHIFT      = 0,
+    CSTS_CFS_SHIFT      = 1,
+    CSTS_SHST_SHIFT     = 2,
+    CSTS_NSSRO_SHIFT    = 4,
+};
+
+enum NvmeCstsMask {
+    CSTS_RDY_MASK   = 0x1,
+    CSTS_CFS_MASK   = 0x1,
+    CSTS_SHST_MASK  = 0x3,
+    CSTS_NSSRO_MASK = 0x1,
+};
+
+enum NvmeCsts {
+    NVME_CSTS_READY         = 1 << CSTS_RDY_SHIFT,
+    NVME_CSTS_FAILED        = 1 << CSTS_CFS_SHIFT,
+    NVME_CSTS_SHST_NORMAL   = 0 << CSTS_SHST_SHIFT,
+    NVME_CSTS_SHST_PROGRESS = 1 << CSTS_SHST_SHIFT,
+    NVME_CSTS_SHST_COMPLETE = 2 << CSTS_SHST_SHIFT,
+    NVME_CSTS_NSSRO         = 1 << CSTS_NSSRO_SHIFT,
+};
+
+#define NVME_CSTS_RDY(csts)     ((csts >> CSTS_RDY_SHIFT)   & CSTS_RDY_MASK)
+#define NVME_CSTS_CFS(csts)     ((csts >> CSTS_CFS_SHIFT)   & CSTS_CFS_MASK)
+#define NVME_CSTS_SHST(csts)    ((csts >> CSTS_SHST_SHIFT)  & CSTS_SHST_MASK)
+#define NVME_CSTS_NSSRO(csts)   ((csts >> CSTS_NSSRO_SHIFT) & CSTS_NSSRO_MASK)
+
+enum NvmeAqaShift {
+    AQA_ASQS_SHIFT  = 0,
+    AQA_ACQS_SHIFT  = 16,
+};
+
+enum NvmeAqaMask {
+    AQA_ASQS_MASK   = 0xfff,
+    AQA_ACQS_MASK   = 0xfff,
+};
+
+#define NVME_AQA_ASQS(aqa) ((aqa >> AQA_ASQS_SHIFT) & AQA_ASQS_MASK)
+#define NVME_AQA_ACQS(aqa) ((aqa >> AQA_ACQS_SHIFT) & AQA_ACQS_MASK)
+
+enum NvmeCmblocShift {
+    CMBLOC_BIR_SHIFT  = 0,
+    CMBLOC_OFST_SHIFT = 12,
+};
+
+enum NvmeCmblocMask {
+    CMBLOC_BIR_MASK  = 0x7,
+    CMBLOC_OFST_MASK = 0xfffff,
+};
+
+#define NVME_CMBLOC_BIR(cmbloc) ((cmbloc >> CMBLOC_BIR_SHIFT)  & \
+                                 CMBLOC_BIR_MASK)
+#define NVME_CMBLOC_OFST(cmbloc)((cmbloc >> CMBLOC_OFST_SHIFT) & \
+                                 CMBLOC_OFST_MASK)
+
+#define NVME_CMBLOC_SET_BIR(cmbloc, val)  \
+    (cmbloc |= (uint64_t)(val & CMBLOC_BIR_MASK) << CMBLOC_BIR_SHIFT)
+#define NVME_CMBLOC_SET_OFST(cmbloc, val) \
+    (cmbloc |= (uint64_t)(val & CMBLOC_OFST_MASK) << CMBLOC_OFST_SHIFT)
+
+enum NvmeCmbszShift {
+    CMBSZ_SQS_SHIFT   = 0,
+    CMBSZ_CQS_SHIFT   = 1,
+    CMBSZ_LISTS_SHIFT = 2,
+    CMBSZ_RDS_SHIFT   = 3,
+    CMBSZ_WDS_SHIFT   = 4,
+    CMBSZ_SZU_SHIFT   = 8,
+    CMBSZ_SZ_SHIFT    = 12,
+};
+
+enum NvmeCmbszMask {
+    CMBSZ_SQS_MASK   = 0x1,
+    CMBSZ_CQS_MASK   = 0x1,
+    CMBSZ_LISTS_MASK = 0x1,
+    CMBSZ_RDS_MASK   = 0x1,
+    CMBSZ_WDS_MASK   = 0x1,
+    CMBSZ_SZU_MASK   = 0xf,
+    CMBSZ_SZ_MASK    = 0xfffff,
+};
+
+#define NVME_CMBSZ_SQS(cmbsz)  ((cmbsz >> CMBSZ_SQS_SHIFT)   & CMBSZ_SQS_MASK)
+#define NVME_CMBSZ_CQS(cmbsz)  ((cmbsz >> CMBSZ_CQS_SHIFT)   & CMBSZ_CQS_MASK)
+#define NVME_CMBSZ_LISTS(cmbsz)((cmbsz >> CMBSZ_LISTS_SHIFT) & CMBSZ_LISTS_MASK)
+#define NVME_CMBSZ_RDS(cmbsz)  ((cmbsz >> CMBSZ_RDS_SHIFT)   & CMBSZ_RDS_MASK)
+#define NVME_CMBSZ_WDS(cmbsz)  ((cmbsz >> CMBSZ_WDS_SHIFT)   & CMBSZ_WDS_MASK)
+#define NVME_CMBSZ_SZU(cmbsz)  ((cmbsz >> CMBSZ_SZU_SHIFT)   & CMBSZ_SZU_MASK)
+#define NVME_CMBSZ_SZ(cmbsz)   ((cmbsz >> CMBSZ_SZ_SHIFT)    & CMBSZ_SZ_MASK)
+
+#define NVME_CMBSZ_SET_SQS(cmbsz, val)   \
+    (cmbsz |= (uint64_t)(val &  CMBSZ_SQS_MASK)  << CMBSZ_SQS_SHIFT)
+#define NVME_CMBSZ_SET_CQS(cmbsz, val)   \
+    (cmbsz |= (uint64_t)(val & CMBSZ_CQS_MASK) << CMBSZ_CQS_SHIFT)
+#define NVME_CMBSZ_SET_LISTS(cmbsz, val) \
+    (cmbsz |= (uint64_t)(val & CMBSZ_LISTS_MASK) << CMBSZ_LISTS_SHIFT)
+#define NVME_CMBSZ_SET_RDS(cmbsz, val)   \
+    (cmbsz |= (uint64_t)(val & CMBSZ_RDS_MASK) << CMBSZ_RDS_SHIFT)
+#define NVME_CMBSZ_SET_WDS(cmbsz, val)   \
+    (cmbsz |= (uint64_t)(val & CMBSZ_WDS_MASK) << CMBSZ_WDS_SHIFT)
+#define NVME_CMBSZ_SET_SZU(cmbsz, val)   \
+    (cmbsz |= (uint64_t)(val & CMBSZ_SZU_MASK) << CMBSZ_SZU_SHIFT)
+#define NVME_CMBSZ_SET_SZ(cmbsz, val)    \
+    (cmbsz |= (uint64_t)(val & CMBSZ_SZ_MASK) << CMBSZ_SZ_SHIFT)
+
+#define NVME_CMBSZ_GETSIZE(cmbsz) \
+    (NVME_CMBSZ_SZ(cmbsz) * (1 << (12 + 4 * NVME_CMBSZ_SZU(cmbsz))))
+
+typedef struct NvmeCmd {
+    uint8_t     opcode;
+    uint8_t     fuse;
+    uint16_t    cid;
+    uint32_t    nsid;
+    uint64_t    res1;
+    uint64_t    mptr;
+    uint64_t    prp1;
+    uint64_t    prp2;
+    uint32_t    cdw10;
+    uint32_t    cdw11;
+    uint32_t    cdw12;
+    uint32_t    cdw13;
+    uint32_t    cdw14;
+    uint32_t    cdw15;
+} NvmeCmd;
+
+enum NvmeAdminCommands {
+    NVME_ADM_CMD_DELETE_SQ      = 0x00,
+    NVME_ADM_CMD_CREATE_SQ      = 0x01,
+    NVME_ADM_CMD_GET_LOG_PAGE   = 0x02,
+    NVME_ADM_CMD_DELETE_CQ      = 0x04,
+    NVME_ADM_CMD_CREATE_CQ      = 0x05,
+    NVME_ADM_CMD_IDENTIFY       = 0x06,
+    NVME_ADM_CMD_ABORT          = 0x08,
+    NVME_ADM_CMD_SET_FEATURES   = 0x09,
+    NVME_ADM_CMD_GET_FEATURES   = 0x0a,
+    NVME_ADM_CMD_ASYNC_EV_REQ   = 0x0c,
+    NVME_ADM_CMD_ACTIVATE_FW    = 0x10,
+    NVME_ADM_CMD_DOWNLOAD_FW    = 0x11,
+    NVME_ADM_CMD_FORMAT_NVM     = 0x80,
+    NVME_ADM_CMD_SECURITY_SEND  = 0x81,
+    NVME_ADM_CMD_SECURITY_RECV  = 0x82,
+};
+
+enum NvmeIoCommands {
+    NVME_CMD_FLUSH              = 0x00,
+    NVME_CMD_WRITE              = 0x01,
+    NVME_CMD_READ               = 0x02,
+    NVME_CMD_WRITE_UNCOR        = 0x04,
+    NVME_CMD_COMPARE            = 0x05,
+    NVME_CMD_WRITE_ZEROS        = 0x08,
+    NVME_CMD_DSM                = 0x09,
+};
+
+typedef struct NvmeDeleteQ {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    rsvd1[9];
+    uint16_t    qid;
+    uint16_t    rsvd10;
+    uint32_t    rsvd11[5];
+} NvmeDeleteQ;
+
+typedef struct NvmeCreateCq {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    rsvd1[5];
+    uint64_t    prp1;
+    uint64_t    rsvd8;
+    uint16_t    cqid;
+    uint16_t    qsize;
+    uint16_t    cq_flags;
+    uint16_t    irq_vector;
+    uint32_t    rsvd12[4];
+} NvmeCreateCq;
+
+#define NVME_CQ_FLAGS_PC(cq_flags)  (cq_flags & 0x1)
+#define NVME_CQ_FLAGS_IEN(cq_flags) ((cq_flags >> 1) & 0x1)
+
+typedef struct NvmeCreateSq {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    rsvd1[5];
+    uint64_t    prp1;
+    uint64_t    rsvd8;
+    uint16_t    sqid;
+    uint16_t    qsize;
+    uint16_t    sq_flags;
+    uint16_t    cqid;
+    uint32_t    rsvd12[4];
+} NvmeCreateSq;
+
+#define NVME_SQ_FLAGS_PC(sq_flags)      (sq_flags & 0x1)
+#define NVME_SQ_FLAGS_QPRIO(sq_flags)   ((sq_flags >> 1) & 0x3)
+
+enum NvmeQueueFlags {
+    NVME_Q_PC           = 1,
+    NVME_Q_PRIO_URGENT  = 0,
+    NVME_Q_PRIO_HIGH    = 1,
+    NVME_Q_PRIO_NORMAL  = 2,
+    NVME_Q_PRIO_LOW     = 3,
+};
+
+typedef struct NvmeIdentify {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    nsid;
+    uint64_t    rsvd2[2];
+    uint64_t    prp1;
+    uint64_t    prp2;
+    uint32_t    cns;
+    uint32_t    rsvd11[5];
+} NvmeIdentify;
+
+typedef struct NvmeRwCmd {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    nsid;
+    uint64_t    rsvd2;
+    uint64_t    mptr;
+    uint64_t    prp1;
+    uint64_t    prp2;
+    uint64_t    slba;
+    uint16_t    nlb;
+    uint16_t    control;
+    uint32_t    dsmgmt;
+    uint32_t    reftag;
+    uint16_t    apptag;
+    uint16_t    appmask;
+} NvmeRwCmd;
+
+enum {
+    NVME_RW_LR                  = 1 << 15,
+    NVME_RW_FUA                 = 1 << 14,
+    NVME_RW_DSM_FREQ_UNSPEC     = 0,
+    NVME_RW_DSM_FREQ_TYPICAL    = 1,
+    NVME_RW_DSM_FREQ_RARE       = 2,
+    NVME_RW_DSM_FREQ_READS      = 3,
+    NVME_RW_DSM_FREQ_WRITES     = 4,
+    NVME_RW_DSM_FREQ_RW         = 5,
+    NVME_RW_DSM_FREQ_ONCE       = 6,
+    NVME_RW_DSM_FREQ_PREFETCH   = 7,
+    NVME_RW_DSM_FREQ_TEMP       = 8,
+    NVME_RW_DSM_LATENCY_NONE    = 0 << 4,
+    NVME_RW_DSM_LATENCY_IDLE    = 1 << 4,
+    NVME_RW_DSM_LATENCY_NORM    = 2 << 4,
+    NVME_RW_DSM_LATENCY_LOW     = 3 << 4,
+    NVME_RW_DSM_SEQ_REQ         = 1 << 6,
+    NVME_RW_DSM_COMPRESSED      = 1 << 7,
+    NVME_RW_PRINFO_PRACT        = 1 << 13,
+    NVME_RW_PRINFO_PRCHK_GUARD  = 1 << 12,
+    NVME_RW_PRINFO_PRCHK_APP    = 1 << 11,
+    NVME_RW_PRINFO_PRCHK_REF    = 1 << 10,
+};
+
+typedef struct NvmeDsmCmd {
+    uint8_t     opcode;
+    uint8_t     flags;
+    uint16_t    cid;
+    uint32_t    nsid;
+    uint64_t    rsvd2[2];
+    uint64_t    prp1;
+    uint64_t    prp2;
+    uint32_t    nr;
+    uint32_t    attributes;
+    uint32_t    rsvd12[4];
+} NvmeDsmCmd;
+
+enum {
+    NVME_DSMGMT_IDR = 1 << 0,
+    NVME_DSMGMT_IDW = 1 << 1,
+    NVME_DSMGMT_AD  = 1 << 2,
+};
+
+typedef struct NvmeDsmRange {
+    uint32_t    cattr;
+    uint32_t    nlb;
+    uint64_t    slba;
+} NvmeDsmRange;
+
+enum NvmeAsyncEventRequest {
+    NVME_AER_TYPE_ERROR                     = 0,
+    NVME_AER_TYPE_SMART                     = 1,
+    NVME_AER_TYPE_IO_SPECIFIC               = 6,
+    NVME_AER_TYPE_VENDOR_SPECIFIC           = 7,
+    NVME_AER_INFO_ERR_INVALID_SQ            = 0,
+    NVME_AER_INFO_ERR_INVALID_DB            = 1,
+    NVME_AER_INFO_ERR_DIAG_FAIL             = 2,
+    NVME_AER_INFO_ERR_PERS_INTERNAL_ERR     = 3,
+    NVME_AER_INFO_ERR_TRANS_INTERNAL_ERR    = 4,
+    NVME_AER_INFO_ERR_FW_IMG_LOAD_ERR       = 5,
+    NVME_AER_INFO_SMART_RELIABILITY         = 0,
+    NVME_AER_INFO_SMART_TEMP_THRESH         = 1,
+    NVME_AER_INFO_SMART_SPARE_THRESH        = 2,
+};
+
+typedef struct NvmeAerResult {
+    uint8_t event_type;
+    uint8_t event_info;
+    uint8_t log_page;
+    uint8_t resv;
+} NvmeAerResult;
+
+typedef struct NvmeCqe {
+    uint32_t    result;
+    uint32_t    rsvd;
+    uint16_t    sq_head;
+    uint16_t    sq_id;
+    uint16_t    cid;
+    uint16_t    status;
+} NvmeCqe;
+
+enum NvmeStatusCodes {
+    NVME_SUCCESS                = 0x0000,
+    NVME_INVALID_OPCODE         = 0x0001,
+    NVME_INVALID_FIELD          = 0x0002,
+    NVME_CID_CONFLICT           = 0x0003,
+    NVME_DATA_TRAS_ERROR        = 0x0004,
+    NVME_POWER_LOSS_ABORT       = 0x0005,
+    NVME_INTERNAL_DEV_ERROR     = 0x0006,
+    NVME_CMD_ABORT_REQ          = 0x0007,
+    NVME_CMD_ABORT_SQ_DEL       = 0x0008,
+    NVME_CMD_ABORT_FAILED_FUSE  = 0x0009,
+    NVME_CMD_ABORT_MISSING_FUSE = 0x000a,
+    NVME_INVALID_NSID           = 0x000b,
+    NVME_CMD_SEQ_ERROR          = 0x000c,
+    NVME_LBA_RANGE              = 0x0080,
+    NVME_CAP_EXCEEDED           = 0x0081,
+    NVME_NS_NOT_READY           = 0x0082,
+    NVME_NS_RESV_CONFLICT       = 0x0083,
+    NVME_INVALID_CQID           = 0x0100,
+    NVME_INVALID_QID            = 0x0101,
+    NVME_MAX_QSIZE_EXCEEDED     = 0x0102,
+    NVME_ACL_EXCEEDED           = 0x0103,
+    NVME_RESERVED               = 0x0104,
+    NVME_AER_LIMIT_EXCEEDED     = 0x0105,
+    NVME_INVALID_FW_SLOT        = 0x0106,
+    NVME_INVALID_FW_IMAGE       = 0x0107,
+    NVME_INVALID_IRQ_VECTOR     = 0x0108,
+    NVME_INVALID_LOG_ID         = 0x0109,
+    NVME_INVALID_FORMAT         = 0x010a,
+    NVME_FW_REQ_RESET           = 0x010b,
+    NVME_INVALID_QUEUE_DEL      = 0x010c,
+    NVME_FID_NOT_SAVEABLE       = 0x010d,
+    NVME_FID_NOT_NSID_SPEC      = 0x010f,
+    NVME_FW_REQ_SUSYSTEM_RESET  = 0x0110,
+    NVME_CONFLICTING_ATTRS      = 0x0180,
+    NVME_INVALID_PROT_INFO      = 0x0181,
+    NVME_WRITE_TO_RO            = 0x0182,
+    NVME_WRITE_FAULT            = 0x0280,
+    NVME_UNRECOVERED_READ       = 0x0281,
+    NVME_E2E_GUARD_ERROR        = 0x0282,
+    NVME_E2E_APP_ERROR          = 0x0283,
+    NVME_E2E_REF_ERROR          = 0x0284,
+    NVME_CMP_FAILURE            = 0x0285,
+    NVME_ACCESS_DENIED          = 0x0286,
+    NVME_MORE                   = 0x2000,
+    NVME_DNR                    = 0x4000,
+    NVME_NO_COMPLETE            = 0xffff,
+};
+
+typedef struct NvmeFwSlotInfoLog {
+    uint8_t     afi;
+    uint8_t     reserved1[7];
+    uint8_t     frs1[8];
+    uint8_t     frs2[8];
+    uint8_t     frs3[8];
+    uint8_t     frs4[8];
+    uint8_t     frs5[8];
+    uint8_t     frs6[8];
+    uint8_t     frs7[8];
+    uint8_t     reserved2[448];
+} NvmeFwSlotInfoLog;
+
+typedef struct NvmeErrorLog {
+    uint64_t    error_count;
+    uint16_t    sqid;
+    uint16_t    cid;
+    uint16_t    status_field;
+    uint16_t    param_error_location;
+    uint64_t    lba;
+    uint32_t    nsid;
+    uint8_t     vs;
+    uint8_t     resv[35];
+} NvmeErrorLog;
+
+typedef struct NvmeSmartLog {
+    uint8_t     critical_warning;
+    uint8_t     temperature[2];
+    uint8_t     available_spare;
+    uint8_t     available_spare_threshold;
+    uint8_t     percentage_used;
+    uint8_t     reserved1[26];
+    uint64_t    data_units_read[2];
+    uint64_t    data_units_written[2];
+    uint64_t    host_read_commands[2];
+    uint64_t    host_write_commands[2];
+    uint64_t    controller_busy_time[2];
+    uint64_t    power_cycles[2];
+    uint64_t    power_on_hours[2];
+    uint64_t    unsafe_shutdowns[2];
+    uint64_t    media_errors[2];
+    uint64_t    number_of_error_log_entries[2];
+    uint8_t     reserved2[320];
+} NvmeSmartLog;
+
+enum NvmeSmartWarn {
+    NVME_SMART_SPARE                  = 1 << 0,
+    NVME_SMART_TEMPERATURE            = 1 << 1,
+    NVME_SMART_RELIABILITY            = 1 << 2,
+    NVME_SMART_MEDIA_READ_ONLY        = 1 << 3,
+    NVME_SMART_FAILED_VOLATILE_MEDIA  = 1 << 4,
+};
+
+enum LogIdentifier {
+    NVME_LOG_ERROR_INFO     = 0x01,
+    NVME_LOG_SMART_INFO     = 0x02,
+    NVME_LOG_FW_SLOT_INFO   = 0x03,
+};
+
+typedef struct NvmePSD {
+    uint16_t    mp;
+    uint16_t    reserved;
+    uint32_t    enlat;
+    uint32_t    exlat;
+    uint8_t     rrt;
+    uint8_t     rrl;
+    uint8_t     rwt;
+    uint8_t     rwl;
+    uint8_t     resv[16];
+} NvmePSD;
+
+typedef struct NvmeIdCtrl {
+    uint16_t    vid;
+    uint16_t    ssvid;
+    uint8_t     sn[20];
+    uint8_t     mn[40];
+    uint8_t     fr[8];
+    uint8_t     rab;
+    uint8_t     ieee[3];
+    uint8_t     cmic;
+    uint8_t     mdts;
+    uint8_t     rsvd255[178];
+    uint16_t    oacs;
+    uint8_t     acl;
+    uint8_t     aerl;
+    uint8_t     frmw;
+    uint8_t     lpa;
+    uint8_t     elpe;
+    uint8_t     npss;
+    uint8_t     rsvd511[248];
+    uint8_t     sqes;
+    uint8_t     cqes;
+    uint16_t    rsvd515;
+    uint32_t    nn;
+    uint16_t    oncs;
+    uint16_t    fuses;
+    uint8_t     fna;
+    uint8_t     vwc;
+    uint16_t    awun;
+    uint16_t    awupf;
+    uint8_t     rsvd703[174];
+    uint8_t     rsvd2047[1344];
+    NvmePSD     psd[32];
+    uint8_t     vs[1024];
+} NvmeIdCtrl;
+
+enum NvmeIdCtrlOacs {
+    NVME_OACS_SECURITY  = 1 << 0,
+    NVME_OACS_FORMAT    = 1 << 1,
+    NVME_OACS_FW        = 1 << 2,
+};
+
+enum NvmeIdCtrlOncs {
+    NVME_ONCS_COMPARE       = 1 << 0,
+    NVME_ONCS_WRITE_UNCORR  = 1 << 1,
+    NVME_ONCS_DSM           = 1 << 2,
+    NVME_ONCS_WRITE_ZEROS   = 1 << 3,
+    NVME_ONCS_FEATURES      = 1 << 4,
+    NVME_ONCS_RESRVATIONS   = 1 << 5,
+};
+
+#define NVME_CTRL_SQES_MIN(sqes) ((sqes) & 0xf)
+#define NVME_CTRL_SQES_MAX(sqes) (((sqes) >> 4) & 0xf)
+#define NVME_CTRL_CQES_MIN(cqes) ((cqes) & 0xf)
+#define NVME_CTRL_CQES_MAX(cqes) (((cqes) >> 4) & 0xf)
+
+typedef struct NvmeFeatureVal {
+    uint32_t    arbitration;
+    uint32_t    power_mgmt;
+    uint32_t    temp_thresh;
+    uint32_t    err_rec;
+    uint32_t    volatile_wc;
+    uint32_t    num_queues;
+    uint32_t    int_coalescing;
+    uint32_t    *int_vector_config;
+    uint32_t    write_atomicity;
+    uint32_t    async_config;
+    uint32_t    sw_prog_marker;
+} NvmeFeatureVal;
+
+#define NVME_ARB_AB(arb)    (arb & 0x7)
+#define NVME_ARB_LPW(arb)   ((arb >> 8) & 0xff)
+#define NVME_ARB_MPW(arb)   ((arb >> 16) & 0xff)
+#define NVME_ARB_HPW(arb)   ((arb >> 24) & 0xff)
+
+#define NVME_INTC_THR(intc)     (intc & 0xff)
+#define NVME_INTC_TIME(intc)    ((intc >> 8) & 0xff)
+
+enum NvmeFeatureIds {
+    NVME_ARBITRATION                = 0x1,
+    NVME_POWER_MANAGEMENT           = 0x2,
+    NVME_LBA_RANGE_TYPE             = 0x3,
+    NVME_TEMPERATURE_THRESHOLD      = 0x4,
+    NVME_ERROR_RECOVERY             = 0x5,
+    NVME_VOLATILE_WRITE_CACHE       = 0x6,
+    NVME_NUMBER_OF_QUEUES           = 0x7,
+    NVME_INTERRUPT_COALESCING       = 0x8,
+    NVME_INTERRUPT_VECTOR_CONF      = 0x9,
+    NVME_WRITE_ATOMICITY            = 0xa,
+    NVME_ASYNCHRONOUS_EVENT_CONF    = 0xb,
+    NVME_SOFTWARE_PROGRESS_MARKER   = 0x80
+};
+
+typedef struct NvmeRangeType {
+    uint8_t     type;
+    uint8_t     attributes;
+    uint8_t     rsvd2[14];
+    uint64_t    slba;
+    uint64_t    nlb;
+    uint8_t     guid[16];
+    uint8_t     rsvd48[16];
+} NvmeRangeType;
+
+typedef struct NvmeLBAF {
+    uint16_t    ms;
+    uint8_t     ds;
+    uint8_t     rp;
+} NvmeLBAF;
+
+typedef struct NvmeIdNs {
+    uint64_t    nsze;
+    uint64_t    ncap;
+    uint64_t    nuse;
+    uint8_t     nsfeat;
+    uint8_t     nlbaf;
+    uint8_t     flbas;
+    uint8_t     mc;
+    uint8_t     dpc;
+    uint8_t     dps;
+    uint8_t     res30[98];
+    NvmeLBAF    lbaf[16];
+    uint8_t     res192[192];
+    uint8_t     vs[3712];
+} NvmeIdNs;
+
+#define NVME_ID_NS_NSFEAT_THIN(nsfeat)      ((nsfeat & 0x1))
+#define NVME_ID_NS_FLBAS_EXTENDED(flbas)    ((flbas >> 4) & 0x1)
+#define NVME_ID_NS_FLBAS_INDEX(flbas)       ((flbas & 0xf))
+#define NVME_ID_NS_MC_SEPARATE(mc)          ((mc >> 1) & 0x1)
+#define NVME_ID_NS_MC_EXTENDED(mc)          ((mc & 0x1))
+#define NVME_ID_NS_DPC_LAST_EIGHT(dpc)      ((dpc >> 4) & 0x1)
+#define NVME_ID_NS_DPC_FIRST_EIGHT(dpc)     ((dpc >> 3) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_3(dpc)          ((dpc >> 2) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_2(dpc)          ((dpc >> 1) & 0x1)
+#define NVME_ID_NS_DPC_TYPE_1(dpc)          ((dpc & 0x1))
+#define NVME_ID_NS_DPC_TYPE_MASK            0x7
+
+enum NvmeIdNsDps {
+    DPS_TYPE_NONE   = 0,
+    DPS_TYPE_1      = 1,
+    DPS_TYPE_2      = 2,
+    DPS_TYPE_3      = 3,
+    DPS_TYPE_MASK   = 0x7,
+    DPS_FIRST_EIGHT = 8,
+};
+
+static inline void _nvme_check_size(void)
+{
+    QEMU_BUILD_BUG_ON(sizeof(NvmeAerResult) != 4);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeCqe) != 16);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeDsmRange) != 16);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeCmd) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeDeleteQ) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeCreateCq) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeCreateSq) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeIdentify) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeRwCmd) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeDsmCmd) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeRangeType) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeErrorLog) != 64);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeFwSlotInfoLog) != 512);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeSmartLog) != 512);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeIdCtrl) != 4096);
+    QEMU_BUILD_BUG_ON(sizeof(NvmeIdNs) != 4096);
+}
+#endif
