Index: sys/cam/cam_ccb.h
===================================================================
--- sys/cam/cam_ccb.h
+++ sys/cam/cam_ccb.h
@@ -206,7 +206,7 @@
 				/* Serial Management Protocol */
 
 	XPT_NVME_IO		= 0x1c | XPT_FC_DEV_QUEUED,
-				/* Execiute the requestred NVMe I/O operation */
+				/* Execute the requested NVMe I/O operation */
 
 	XPT_MMCSD_IO		= 0x1d | XPT_FC_DEV_QUEUED,
 				/* Placeholder for MMC / SD / SDIO I/O stuff */
@@ -215,6 +215,9 @@
 				       | XPT_FC_XPT_ONLY,
 				/* Scan Target */
 
+	XPT_NVME_ADMIN		= 0x1f | XPT_FC_DEV_QUEUED,
+				/* Execute the requested NVMe Admin operation */
+
 /* HBA engine commands 0x20->0x2F */
 	XPT_ENG_INQ		= 0x20 | XPT_FC_XPT_ONLY,
 				/* HBA engine feature inquiry */
@@ -805,7 +808,7 @@
 };
 
 /*
- * NVMe I/O Request CCB used for the XPT_NVME_IO function code.
+ * NVMe I/O Request CCB used for the XPT_NVME_IO and XPT_NVME_ADMIN function codes.
  */
 struct ccb_nvmeio {
 	struct	   ccb_hdr ccb_h;
@@ -1443,6 +1446,21 @@
 	nvmeio->data_ptr = data_ptr;
 	nvmeio->dxfer_len = dxfer_len;
 }
+
+static __inline void
+cam_fill_nvmeadmin(struct ccb_nvmeio *nvmeio, u_int32_t retries,
+	      void (*cbfcnp)(struct cam_periph *, union ccb *),
+	      u_int32_t flags, u_int8_t *data_ptr, u_int32_t dxfer_len,
+	      u_int32_t timeout)
+{
+	nvmeio->ccb_h.func_code = XPT_NVME_ADMIN;
+	nvmeio->ccb_h.flags = flags;
+	nvmeio->ccb_h.retry_count = retries;
+	nvmeio->ccb_h.cbfcnp = cbfcnp;
+	nvmeio->ccb_h.timeout = timeout;
+	nvmeio->data_ptr = data_ptr;
+	nvmeio->dxfer_len = dxfer_len;
+}
 __END_DECLS
 
 #endif /* _CAM_CAM_CCB_H */
Index: sys/cam/cam_periph.c
===================================================================
--- sys/cam/cam_periph.c
+++ sys/cam/cam_periph.c
@@ -819,6 +819,17 @@
 		dirs[1] = CAM_DIR_IN;
 		numbufs = 2;
 		break;
+	case XPT_NVME_IO:
+	case XPT_NVME_ADMIN:
+		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE)
+			return (0);
+		if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR)
+			return (EINVAL);
+		data_ptrs[0] = &ccb->nvmeio.data_ptr;
+		lengths[0] = ccb->nvmeio.dxfer_len;
+		dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK;
+		numbufs = 1;
+		break;
 	case XPT_DEV_ADVINFO:
 		if (ccb->cdai.bufsiz == 0)
 			return (0);
Index: sys/cam/cam_xpt.c
===================================================================
--- sys/cam/cam_xpt.c
+++ sys/cam/cam_xpt.c
@@ -2575,6 +2575,10 @@
 		if (start_ccb->ccb_h.func_code == XPT_NVME_IO)
 			start_ccb->nvmeio.resid = 0;
 		/* FALLTHROUGH */
+	case XPT_NVME_ADMIN:
+		if (start_ccb->ccb_h.func_code == XPT_NVME_ADMIN)
+			start_ccb->nvmeio.resid = 0;
+		/* FALLTHROUGH */
 	case XPT_RESET_DEV:
 	case XPT_ENG_EXEC:
 	case XPT_SMP_IO:
@@ -5428,6 +5432,7 @@
 	{ XPT_MMCSD_IO, "XPT_MMCSD_IO" },
 	{ XPT_SMP_IO, "XPT_SMP_IO" },
 	{ XPT_SCAN_TGT, "XPT_SCAN_TGT" },
+	{ XPT_NVME_ADMIN, "XPT_NVME_ADMIN" },
 	{ XPT_ENG_INQ, "XPT_ENG_INQ" },
 	{ XPT_ENG_EXEC, "XPT_ENG_EXEC" },
 	{ XPT_EN_LUN, "XPT_EN_LUN" },
Index: sys/cam/scsi/scsi_pass.c
===================================================================
--- sys/cam/scsi/scsi_pass.c
+++ sys/cam/scsi/scsi_pass.c
@@ -2202,6 +2202,7 @@
 	 */
 	fc = ccb->ccb_h.func_code;
 	if ((fc == XPT_SCSI_IO) || (fc == XPT_ATA_IO) || (fc == XPT_SMP_IO)
+	 || (fc == XPT_NVME_IO) || (fc == XPT_NVME_ADMIN)
 	 || (fc == XPT_DEV_MATCH) || (fc == XPT_DEV_ADVINFO)) {
 		bzero(&mapinfo, sizeof(mapinfo));
 
Index: sys/dev/nvme/nvme_sim.c
===================================================================
--- sys/dev/nvme/nvme_sim.c
+++ sys/dev/nvme/nvme_sim.c
@@ -110,7 +110,10 @@
 
 	memcpy(&req->cmd, &ccb->nvmeio.cmd, sizeof(ccb->nvmeio.cmd));
 
-	nvme_ctrlr_submit_io_request(ctrlr, req);
+	if (ccb->ccb_h.func_code == XPT_NVME_IO)
+		nvme_ctrlr_submit_io_request(ctrlr, req);
+	else
+		nvme_ctrlr_submit_admin_request(ctrlr, req);
 
 	ccb->ccb_h.status |= CAM_SIM_QUEUED;
 }
@@ -225,6 +228,7 @@
 		ccb->ccb_h.status = CAM_REQ_CMP;
 		break;
 	case XPT_NVME_IO:		/* Execute the requested I/O operation */
+	case XPT_NVME_ADMIN:		/* or Admin operation */
 		nvme_sim_nvmeio(sim, ccb);
 		return;			/* no done */
 	default: