diff --git a/sssraid.h b/sssraid.h
new file mode 100644
index 0000000..8e34dc0
--- /dev/null
+++ b/sssraid.h
@@ -0,0 +1,198 @@
+/*
+ * sssraid.h
+ *
+ * Home page of code is: http://www.smartmontools.org
+ *
+ * Copyright (C) 2022 3SNIC Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef _SSSRAID_H_
+#define _SSSRAID_H_
+#include <stdint.h>
+#define u8  uint8_t
+#define u16 uint16_t
+#define u32 uint32_t
+#define u64 uint64_t
+#define ADM_MAX_DATA_SIZE 0x1000U		// 4096
+#define ADM_SCSI_CDB_MAX_LEN 32
+#define ADM_SCSI_CDB_SENSE_MAX_LEN 96
+#define ADM_SCSI_CDB_SENSE_LEN32 32
+#define ADM_CMD_SHOW_PDLIST 0x502		// 1282
+#define ADM_CMD_SCSI_PASSTHROUGH 0x51e	// 1310
+#define BSG_APPEND_TIMEOUT_MS 600000
+#define DEFAULT_CONMMAND_TIMEOUT_MS 180000
+#define ADM_BSG_MSGCODE_SCSI_PTHRU  1
+
+#define ADM_RAID_SET 0xc0
+#define ADM_RAID_WRITE 0xc1
+#define ADM_RAID_READ 0xc2
+#define ADM_RAID_PARAM_WRITE 0xc3
+#define ADM_RAID_READ_FROM_CQE 0xc4
+
+// pdlist device type interface
+enum adm_pdlist_intf {
+    ADM_DEVICE_TYPE_SAS = 1,
+    ADM_DEVICE_TYPE_EXP = 2,
+    ADM_DEVICE_TYPE_SATA = 8,
+    ADM_DEVICE_TYPE_PLANE = 9,
+    ADM_DEVICE_TYPE_NVME = 10,
+    ADM_DEVICE_TYPE_UNKNOW,
+    ADM_DEVICE_TYPE_BUTT
+};
+
+struct cmd_pdlist_idx {
+    u16 start_idx;
+    u16 count;
+    u32 rsvd;
+};
+
+struct cmd_pdlist_entry {
+    u16 enc_id;
+    u16 slot_id;
+    u8 interface;
+    u8 media_type;
+    u8 logi_type;
+    u8 logi_status;
+	u32 reserve[26];
+};
+#define CMD_PDS_MAX_NUM 256U
+#define CMD_PDLIST_ONCE_NUM ((ADM_MAX_DATA_SIZE - 64) / sizeof(struct cmd_pdlist_entry))
+
+struct cmd_show_pdlist {
+    u16 num;
+    u16 rsvd0;
+    u32 rsvd1[15];
+    struct cmd_pdlist_entry disks[CMD_PDLIST_ONCE_NUM];
+};
+
+struct multi_disk_location {
+    u16 enc_id;
+    u16 slot_id;
+    u16 did;
+    u8 flag;
+    u8 rsvd;
+};
+
+struct cmd_scsi_passthrough {
+    struct multi_disk_location loc;
+    u8 lun;
+    u8 cdb_len;
+    u8 sense_buffer_len;
+    u8 rsvd0;
+    u8 cdb[32];
+    u32 rsvd1;
+    u8 *sense_buffer;
+};
+
+struct sssraid_passthru_common_cmd {
+	u8	opcode;
+	u8	flags;
+	u16	rsvd0;
+	u32	nsid;
+	union {
+		struct {
+			u16 subopcode;
+			u16 rsvd1;
+		} info_0;
+		u32 cdw2;
+	};
+	union {
+		struct {
+			u16 data_len;
+			u16 param_len;
+		} info_1;
+		u32 cdw3;
+	};
+	u64 metadata;
+
+	u64 addr;
+    u32 metadata_len;
+    u32 data_len;
+
+	u32 cdw10;
+	u32 cdw11;
+	u32 cdw12;
+	u32 cdw13;
+	u32 cdw14;
+	u32 cdw15;
+	u32 timeout_ms;
+	u32 result0;
+	u32 result1;
+};
+
+struct sssraid_ioq_passthru_cmd {
+	u8  opcode;
+	u8  flags;
+	u16 rsvd0;
+	u32 nsid;
+	union {
+		struct {
+			u16 res_sense_len;
+			u8  cdb_len;
+			u8  rsvd0;
+		} info_0;
+		u32 cdw2;
+	};
+	union {
+		struct {
+			u16 subopcode;
+			u16 rsvd1;
+		} info_1;
+		u32 cdw3;
+	};
+	union {
+		struct {
+			u16 rsvd;
+			u16 param_len;
+		} info_2;
+		u32 cdw4;
+	};
+	u32 cdw5;
+	u64 addr;
+	u64 prp2;
+	union {
+		struct {
+			u16 eid;
+			u16 sid;
+		} info_3;
+		u32 cdw10;
+	};
+	union {
+		struct {
+			u16 did;
+			u8  did_flag;
+			u8  rsvd2;
+		} info_4;
+		u32 cdw11;
+	};
+	u32 cdw12;
+	u32 cdw13;
+	u32 cdw14;
+	u32 data_len;
+	u32 cdw16;
+	u32 cdw17;
+	u32 cdw18;
+	u32 cdw19;
+	u32 cdw20;
+	u32 cdw21;
+	u32 cdw22;
+	u32 cdw23;
+	u64 sense_addr;
+	u32 cdw26[4];
+	u32 timeout_ms;
+	u32 result0;
+	u32 result1;
+};
+
+struct bsg_ioctl_cmd {
+    u32 msgcode;
+    u32 control;
+    union {
+        struct sssraid_passthru_common_cmd ioctl_r64;
+        struct sssraid_ioq_passthru_cmd ioctl_pthru;
+    };
+};
+
+#endif // _SSSRAID_H
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