diff --git a/DiscImageChef.Devices/FreeBSD/Enums.cs b/DiscImageChef.Devices/FreeBSD/Enums.cs
index 6096f417..ba40aed6 100644
--- a/DiscImageChef.Devices/FreeBSD/Enums.cs
+++ b/DiscImageChef.Devices/FreeBSD/Enums.cs
@@ -253,5 +253,137 @@ namespace DiscImageChef.Devices.FreeBSD
         /// <summary>Vendor Unique codes: 0x80->0x8F</summary>
         XPT_VUNIQUE = 0x80
     }
+
+    enum ccb_dev_match_status
+    {
+        CAM_DEV_MATCH_LAST,
+        CAM_DEV_MATCH_MORE,
+        CAM_DEV_MATCH_LIST_CHANGED,
+        CAM_DEV_MATCH_SIZE_ERROR,
+        CAM_DEV_MATCH_ERROR
+    }
+
+    enum dev_match_type
+    {
+        DEV_MATCH_PERIPH,
+        DEV_MATCH_DEVICE,
+        DEV_MATCH_BUS
+    }
+
+    [Flags]
+    enum periph_pattern_flags
+    {
+        PERIPH_MATCH_NONE = 0x000,
+        PERIPH_MATCH_PATH = 0x001,
+        PERIPH_MATCH_TARGET = 0x002,
+        PERIPH_MATCH_LUN = 0x004,
+        PERIPH_MATCH_NAME = 0x008,
+        PERIPH_MATCH_UNIT = 0x010,
+    //  PERIPH_MATCH_ANY = 0x01f
+    }
+
+    [Flags]
+    enum dev_pattern_flags
+    {
+        DEV_MATCH_NONE = 0x000,
+        DEV_MATCH_PATH = 0x001,
+        DEV_MATCH_TARGET = 0x002,
+        DEV_MATCH_LUN = 0x004,
+        DEV_MATCH_INQUIRY = 0x008,
+        DEV_MATCH_DEVID = 0x010,
+    //  DEV_MATCH_ANY = 0x00f
+    }
+
+    [Flags]
+    enum bus_pattern_flags
+    {
+        BUS_MATCH_NONE = 0x000,
+        BUS_MATCH_PATH = 0x001,
+        BUS_MATCH_NAME = 0x002,
+        BUS_MATCH_UNIT = 0x004,
+        BUS_MATCH_BUS_ID = 0x008,
+    //  BUS_MATCH_ANY = 0x00f
+    }
+
+    [Flags]
+    enum dev_result_flags
+    {
+        DEV_RESULT_NOFLAG = 0x00,
+        DEV_RESULT_UNCONFIGURED = 0x01
+    }
+
+    enum cam_proto
+    {
+        PROTO_UNKNOWN,
+        PROTO_UNSPECIFIED,
+
+        /// <summary>
+        /// Small Computer System Interface
+        /// </summary>
+        PROTO_SCSI,
+
+        /// <summary>
+        /// AT Attachment
+        /// </summary>
+        PROTO_ATA,
+
+        /// <summary>
+        /// AT Attachment Packetized Interface
+        /// </summary>
+        PROTO_ATAPI,
+
+        /// <summary>
+        /// SATA Port Multiplier
+        /// </summary>
+        PROTO_SATAPM,
+
+        /// <summary>
+        /// SATA Enclosure Management Bridge
+        /// </summary>
+        PROTO_SEMB,
+
+        /// <summary>
+        /// NVMe
+        /// </summary>
+        PROTO_NVME,
+
+        /// <summary>
+        /// MMC, SD, SDIO
+        /// </summary>
+        PROTO_MMCSD,
+    }
+
+    [Flags]
+    enum mmc_card_features
+    {
+        CARD_FEATURE_MEMORY = 0x1,
+        CARD_FEATURE_SDHC = 0x1 << 1,
+        CARD_FEATURE_SDIO = 0x1 << 2,
+        CARD_FEATURE_SD20 = 0x1 << 3,
+        CARD_FEATURE_MMC = 0x1 << 4,
+        CARD_FEATURE_18V = 0x1 << 5,
+    }
+
+    enum cam_generations : uint
+    {
+        CAM_BUS_GENERATION = 0x00,
+        CAM_TARGET_GENERATION = 0x01,
+        CAM_DEV_GENERATION = 0x02,
+        CAM_PERIPH_GENERATION = 0x03,
+    }
+
+    [Flags]
+    enum dev_pos_type
+    {
+        CAM_DEV_POS_NONE = 0x000,
+        CAM_DEV_POS_BUS = 0x001,
+        CAM_DEV_POS_TARGET = 0x002,
+        CAM_DEV_POS_DEVICE = 0x004,
+        CAM_DEV_POS_PERIPH = 0x008,
+        CAM_DEV_POS_PDPTR = 0x010,
+    //  CAM_DEV_POS_TYPEMASK = 0xf00,
+        CAM_DEV_POS_EDT = 0x100,
+        CAM_DEV_POS_PDRV = 0x200
+    }
 }
 
diff --git a/DiscImageChef.Devices/FreeBSD/Structs.cs b/DiscImageChef.Devices/FreeBSD/Structs.cs
index 98005f25..5d1d298a 100644
--- a/DiscImageChef.Devices/FreeBSD/Structs.cs
+++ b/DiscImageChef.Devices/FreeBSD/Structs.cs
@@ -33,6 +33,9 @@
 
 using System;
 using System.Runtime.InteropServices;
+using path_id_t = System.UInt32;
+using target_id_t = System.UInt32;
+using lun_id_t = System.UInt64;
 
 namespace DiscImageChef.Devices.FreeBSD
 {
@@ -375,5 +378,213 @@ namespace DiscImageChef.Devices.FreeBSD
         /// <summary>padding for removed uint32_t</summary>
         public ushort unused;
     }
+
+    struct periph_match_pattern
+    {
+        private const int DEV_IDLEN = 16;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = DEV_IDLEN)] public byte[] periph_name;
+        public uint unit_number;
+        public path_id_t path_id;
+        public target_id_t target_id;
+        public lun_id_t target_lun;
+        public periph_pattern_flags flags;
+    }
+
+    struct device_id_match_pattern
+    {
+        public byte id_len;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)] public byte[] id;
+    }
+
+    struct scsi_static_inquiry_pattern
+    {
+        private const int SID_VENDOR_SIZE = 8;
+        private const int SID_PRODUCT_SIZE = 16;
+        private const int SID_REVISION_SIZE = 4;
+        public byte type;
+        public byte media_type;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = SID_VENDOR_SIZE + 1)] public byte[] vendor;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = SID_PRODUCT_SIZE + 1)] public byte[] product;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = SID_REVISION_SIZE + 1)] public byte[] revision;
+    }
+
+    struct device_match_pattern_data
+    {
+        [FieldOffset(0)] public scsi_static_inquiry_pattern inq_pat;
+        [FieldOffset(0)] public device_id_match_pattern devid_pat;
+    }
+
+    struct device_match_pattern
+    {
+        public path_id_t path_id;
+        public target_id_t target_id;
+        public lun_id_t target_lun;
+        public dev_pattern_flags flags;
+        public device_match_pattern_data data;
+    }
+
+    struct bus_match_pattern
+    {
+        private const int DEV_IDLEN = 16;
+
+        public path_id_t path_id;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = DEV_IDLEN)] public byte[] dev_name;
+        public uint unit_number;
+        public uint bus_id;
+        bus_pattern_flags flags;
+    }
+
+    [StructLayout(LayoutKind.Explicit)]
+    struct match_pattern
+    {
+        [FieldOffset(0)] public periph_match_pattern periph_pattern;
+        [FieldOffset(0)] public device_match_pattern device_pattern;
+        [FieldOffset(0)] public bus_match_pattern bus_pattern;
+    }
+
+    struct dev_match_pattern
+    {
+        public dev_match_type type;
+        public match_pattern pattern;
+    }
+
+    struct periph_match_result
+    {
+        private const int DEV_IDLEN = 16;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = DEV_IDLEN)] public byte[] periph_name;
+        public uint unit_number;
+        public path_id_t path_id;
+        public target_id_t target_id;
+        public lun_id_t target_lun;
+    }
+
+    struct mmc_cid
+    {
+        public uint mid;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] public byte[] pnm;
+        public uint psn;
+        public ushort oid;
+        public ushort mdt_year;
+        public byte mdt_month;
+        public byte prv;
+        public byte fwrev;
+    }
+
+    struct mmc_params
+    {
+        /// <summary>
+        /// Card model
+        /// </summary>
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 40)] public byte[] model;
+
+        /// <summary>
+        /// Card OCR
+        /// </summary>
+        public uint card_ocr;
+
+        /// <summary>
+        /// OCR of the IO portion of the card
+        /// </summary>
+        public uint io_ocr;
+
+        /// <summary>
+        /// Card CID -- raw 
+        /// </summary>
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public uint[] card_cid;
+
+        /// <summary>
+        /// Card CID -- parsed 
+        /// </summary>
+        public mmc_cid cid;
+
+        /// <summary>
+        /// Card CSD -- raw
+        /// </summary>
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public uint[] card_csd;
+
+        /// <summary>
+        /// Card RCA
+        /// </summary>
+        public ushort card_rca;
+
+        /// <summary>
+        /// What kind of card is it
+        /// </summary>
+        public mmc_card_features card_features;
+
+        public byte sdio_func_count;
+    }
+
+    struct device_match_result
+    {
+        public path_id_t path_id;
+        public target_id_t target_id;
+        public lun_id_t target_lun;
+        public cam_proto protocol;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 256)] public byte[] inq_data;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 512)] public byte[] ident_data;
+        public dev_result_flags flags;
+        public mmc_params mmc_ident_data;
+    }
+    struct bus_match_result {
+        public path_id_t	path_id;
+        private const int DEV_IDLEN = 16;
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = DEV_IDLEN)] public byte[] dev_name;
+        public uint 	unit_number;
+        public uint 	bus_id;
+    }
+    [StructLayout(LayoutKind.Explicit)]
+    struct match_result
+    {
+        [FieldOffset(0)] public periph_match_result periph_result;
+        [FieldOffset(0)] public device_match_result device_result;
+        [FieldOffset(0)] public bus_match_result bus_result;
+    }
+
+    struct dev_match_result
+    {
+        public dev_match_type type;
+        public match_result result;
+    }
+
+    struct ccb_dm_cookie
+    {
+        public IntPtr bus;
+        public IntPtr target;
+        public IntPtr device;
+        public IntPtr periph;
+        public IntPtr pdrv;
+    }
+
+    struct ccb_dev_position
+    {
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public cam_generations[] generations;
+        dev_pos_type position_type;
+        public ccb_dm_cookie cookie;
+    }
+
+    struct ccb_dev_match
+    {
+        public ccb_hdr ccb_h;
+        ccb_dev_match_status status;
+        public uint num_patterns;
+        public uint pattern_buf_len;
+
+        /// <summary>
+        /// dev_match_pattern*
+        /// </summary>
+        public IntPtr patterns;
+
+        public uint num_matches;
+        public uint match_buf_len;
+
+        /// <summary>
+        /// dev_match_result*
+        /// </summary>
+        public IntPtr matches;
+
+        public ccb_dev_position pos;
+    }
 }