[PATCH v2 02/17] net/ntnic: add core platform functionality

[Serhii Iliushyk <sil-plv@napatech.com>]

Add ntnic platform interfaces for FPGA registers

Signed-off-by: Serhii Iliushyk <sil-plv@napatech.com>
---
 drivers/net/ntnic/nthw/nthw_drv.h          |  94 +++
 drivers/net/ntnic/nthw/nthw_epp.c          | 226 ++++++
 drivers/net/ntnic/nthw/nthw_epp.h          |  92 +++
 drivers/net/ntnic/nthw/nthw_helper.h       |  30 +
 drivers/net/ntnic/nthw/nthw_platform.c     |  52 ++
 drivers/net/ntnic/nthw/nthw_platform_drv.h |  49 ++
 drivers/net/ntnic/nthw/nthw_profile.h      |  16 +
 drivers/net/ntnic/nthw/nthw_rac.c          | 801 +++++++++++++++++++++
 drivers/net/ntnic/nthw/nthw_rac.h          | 154 ++++
 drivers/net/ntnic/nthw/nthw_register.h     |  22 +
 drivers/net/ntnic/nthw/nthw_utils.c        |  53 ++
 drivers/net/ntnic/nthw/nthw_utils.h        |  11 +
 12 files changed, 1600 insertions(+)
 create mode 100644 drivers/net/ntnic/nthw/nthw_drv.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_epp.c
 create mode 100644 drivers/net/ntnic/nthw/nthw_epp.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_helper.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_platform.c
 create mode 100644 drivers/net/ntnic/nthw/nthw_platform_drv.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_profile.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_rac.c
 create mode 100644 drivers/net/ntnic/nthw/nthw_rac.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_register.h
 create mode 100644 drivers/net/ntnic/nthw/nthw_utils.c
 create mode 100644 drivers/net/ntnic/nthw/nthw_utils.h

diff --git a/drivers/net/ntnic/nthw/nthw_drv.h b/drivers/net/ntnic/nthw/nthw_drv.h
new file mode 100644
index 0000000000..e9e25bbc29
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_drv.h
@@ -0,0 +1,94 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_DRV_H__
+#define __NTHW_DRV_H__
+
+#include "nthw_profile.h"
+
+typedef enum nt_meta_port_type_e {
+	PORT_TYPE_PHYSICAL,
+	PORT_TYPE_VIRTUAL,
+	PORT_TYPE_OVERRIDE,
+} nt_meta_port_type_t;
+
+#include "nthw_helper.h"
+#include "nthw_utils.h"
+#include "nthw_platform_drv.h"
+#include "nthw_fpga_model.h"
+#include "ntnic_stat.h"
+#include "ntnic_dbs.h"
+#include "nthw_epp.h"
+#include "nthw_core.h"
+
+typedef struct mcu_info_s {
+	bool mb_has_mcu;
+	int mn_mcu_type;
+	int mn_mcu_dram_size;
+} mcu_info_t;
+
+typedef struct nthw_hw_info_s {
+	/* From FW */
+	int hw_id;
+	int hw_id_emulated;
+	char hw_plat_id_str[32];
+
+	struct vpd_info_s {
+		int mn_mac_addr_count;
+		uint64_t mn_mac_addr_value;
+		uint8_t ma_mac_addr_octets[6];
+	} vpd_info;
+} nthw_hw_info_t;
+
+typedef struct fpga_info_s {
+	uint64_t n_fpga_ident;
+
+	int n_fpga_type_id;
+	int n_fpga_prod_id;
+	int n_fpga_ver_id;
+	int n_fpga_rev_id;
+
+	int n_fpga_build_time;
+
+	int n_fpga_debug_mode;
+
+	int n_nims;
+	int n_phy_ports;
+	int n_phy_quads;
+	int n_rx_ports;
+	int n_tx_ports;
+	int n_vf_offset;
+
+	enum fpga_info_profile profile;
+
+	struct nthw_fpga_s *mp_fpga;
+
+	struct nthw_rac *mp_nthw_rac;
+	struct nthw_hif *mp_nthw_hif;
+	struct nthw_pcie3 *mp_nthw_pcie3;
+	struct nthw_tsm *mp_nthw_tsm;
+
+	nthw_dbs_t *mp_nthw_dbs;
+	nthw_epp_t *mp_nthw_epp;
+
+	uint8_t *bar0_addr;	/* Needed for register read/write */
+	size_t bar0_size;
+
+	int adapter_no;	/* Needed for nthw_rac DMA array indexing */
+	uint32_t pciident;	/* Needed for nthw_rac DMA memzone_reserve */
+	int numa_node;	/* Needed for nthw_rac DMA memzone_reserve */
+
+	char *mp_adapter_id_str;/* Pointer to string literal used in nthw log messages */
+
+	struct mcu_info_s mcu_info;
+
+	struct nthw_hw_info_s nthw_hw_info;
+
+	nthw_adapter_id_t n_nthw_adapter_id;
+
+} fpga_info_t;
+
+
+#endif	/* __NTHW_DRV_H__ */
diff --git a/drivers/net/ntnic/nthw/nthw_epp.c b/drivers/net/ntnic/nthw/nthw_epp.c
new file mode 100644
index 0000000000..fe1c562394
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_epp.c
@@ -0,0 +1,226 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include "ntlog.h"
+
+#include "nthw_drv.h"
+#include "nthw_register.h"
+
+#include "nthw_epp.h"
+
+#include <errno.h>	/* ENOTSUP */
+
+nthw_epp_t *nthw_epp_new(void)
+{
+	nthw_epp_t *p = malloc(sizeof(nthw_epp_t));
+
+	if (p)
+		memset(p, 0, sizeof(nthw_epp_t));
+
+	return p;
+}
+
+int nthw_epp_present(nthw_fpga_t *p_fpga, int n_instance)
+{
+	return nthw_epp_init(NULL, p_fpga, n_instance) == 0;
+}
+
+int nthw_epp_init(nthw_epp_t *p, nthw_fpga_t *p_fpga, int n_instance)
+{
+	nthw_module_t *mod = nthw_fpga_query_module(p_fpga, MOD_EPP, n_instance);
+
+	if (p == NULL)
+		return mod == NULL ? -1 : 0;
+
+	if (mod == NULL) {
+		NT_LOG(ERR, NTHW, "%s: EPP %d: no such instance\n",
+			p_fpga->p_fpga_info->mp_adapter_id_str, n_instance);
+		return -1;
+	}
+
+	p->mp_fpga = p_fpga;
+	p->mn_instance = n_instance;
+	p->mp_mod_epp = mod;
+
+	p->mn_epp_categories = nthw_fpga_get_product_param(p_fpga, NT_EPP_CATEGORIES, 0);
+
+	p->mp_reg_reciepe_memory_control = nthw_module_get_register(p->mp_mod_epp, EPP_RCP_CTRL);
+	p->mp_fld_reciepe_memory_control_adr =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_control, EPP_RCP_CTRL_ADR);
+	p->mp_fld_reciepe_memory_control_cnt =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_control, EPP_RCP_CTRL_CNT);
+
+	p->mp_reg_reciepe_memory_data = nthw_module_get_register(p->mp_mod_epp, EPP_RCP_DATA);
+	p->mp_fld_reciepe_memory_data_tx_mtu_epp_enable =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data, EPP_RCP_DATA_TX_MTU_EPP_EN);
+	p->mp_fld_reciepe_memory_data_queue_mtu_epp_enable =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data,
+			EPP_RCP_DATA_QUEUE_MTU_EPP_EN);
+	p->mp_fld_reciepe_memory_data_size_adjust_tx_port =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data,
+			EPP_RCP_DATA_SIZE_ADJUST_TXP);
+	p->mp_fld_reciepe_memory_data_size_adjust_virtual_port =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data,
+			EPP_RCP_DATA_SIZE_ADJUST_VPORT);
+	p->mp_fld_reciepe_memory_data_fixed18b_l2_mtu =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data,
+			EPP_RCP_DATA_FIXED_18B_L2_MTU);
+	p->mp_fld_reciepe_memory_data_txp_qos_epp_enable =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data, EPP_RCP_DATA_TX_QOS_EPP_EN);
+	p->mp_fld_reciepe_memory_data_queue_qos_epp_enable =
+		nthw_register_get_field(p->mp_reg_reciepe_memory_data,
+			EPP_RCP_DATA_QUEUE_QOS_EPP_EN);
+
+	p->mp_reg_txp_port_mtu_control = nthw_module_get_register(p->mp_mod_epp, EPP_TXP_MTU_CTRL);
+	p->mp_fld_txp_port_mtu_control_adr =
+		nthw_register_get_field(p->mp_reg_txp_port_mtu_control, EPP_TXP_MTU_CTRL_ADR);
+	p->mp_fld_txp_port_mtu_control_cnt =
+		nthw_register_get_field(p->mp_reg_txp_port_mtu_control, EPP_TXP_MTU_CTRL_CNT);
+
+	p->mp_reg_txp_port_mtu_data = nthw_module_get_register(p->mp_mod_epp, EPP_TXP_MTU_DATA);
+	p->mp_fld_txp_port_mtu_data_max_mtu =
+		nthw_register_get_field(p->mp_reg_txp_port_mtu_data, EPP_TXP_MTU_DATA_MAX_MTU);
+
+	p->mp_reg_queue_mtu_control = nthw_module_get_register(p->mp_mod_epp, EPP_QUEUE_MTU_CTRL);
+	p->mp_fld_queue_mtu_control_adr =
+		nthw_register_get_field(p->mp_reg_queue_mtu_control, EPP_QUEUE_MTU_CTRL_ADR);
+	p->mp_fld_queue_mtu_control_cnt =
+		nthw_register_get_field(p->mp_reg_queue_mtu_control, EPP_QUEUE_MTU_CTRL_CNT);
+
+	p->mp_reg_queue_mtu_data = nthw_module_get_register(p->mp_mod_epp, EPP_QUEUE_MTU_DATA);
+	p->mp_fld_queue_mtu_data_max_mtu =
+		nthw_register_get_field(p->mp_reg_queue_mtu_data, EPP_QUEUE_MTU_DATA_MAX_MTU);
+
+	p->mp_reg_txp_qos_control = nthw_module_get_register(p->mp_mod_epp, EPP_TXP_QOS_CTRL);
+	p->mp_fld_txp_qos_control_adr =
+		nthw_register_get_field(p->mp_reg_txp_qos_control, EPP_TXP_QOS_CTRL_ADR);
+	p->mp_fld_txp_qos_control_cnt =
+		nthw_register_get_field(p->mp_reg_txp_qos_control, EPP_TXP_QOS_CTRL_CNT);
+
+	p->mp_reg_txp_qos_data = nthw_module_get_register(p->mp_mod_epp, EPP_TXP_QOS_DATA);
+	p->mp_fld_txp_qos_data_enable =
+		nthw_register_get_field(p->mp_reg_txp_qos_data, EPP_TXP_QOS_DATA_EN);
+	p->mp_fld_txp_qos_data_information_rate =
+		nthw_register_get_field(p->mp_reg_txp_qos_data, EPP_TXP_QOS_DATA_IR);
+	p->mp_fld_txp_qos_data_information_rate_fractional =
+		nthw_register_get_field(p->mp_reg_txp_qos_data, EPP_TXP_QOS_DATA_IR_FRACTION);
+	p->mp_fld_txp_qos_data_burst_size =
+		nthw_register_get_field(p->mp_reg_txp_qos_data, EPP_TXP_QOS_DATA_BS);
+
+	p->mp_reg_vport_qos_control = nthw_module_get_register(p->mp_mod_epp, EPP_VPORT_QOS_CTRL);
+	p->mp_fld_vport_qos_control_adr =
+		nthw_register_get_field(p->mp_reg_vport_qos_control, EPP_VPORT_QOS_CTRL_ADR);
+	p->mp_fld_vport_qos_control_cnt =
+		nthw_register_get_field(p->mp_reg_vport_qos_control, EPP_VPORT_QOS_CTRL_CNT);
+
+	p->mp_reg_vport_qos_data = nthw_module_get_register(p->mp_mod_epp, EPP_VPORT_QOS_DATA);
+	p->mp_fld_vport_qos_data_enable =
+		nthw_register_get_field(p->mp_reg_vport_qos_data, EPP_VPORT_QOS_DATA_EN);
+	p->mp_fld_vport_qos_data_information_rate =
+		nthw_register_get_field(p->mp_reg_vport_qos_data, EPP_VPORT_QOS_DATA_IR);
+	p->mp_fld_vport_qos_data_information_rate_fractional =
+		nthw_register_get_field(p->mp_reg_vport_qos_data, EPP_VPORT_QOS_DATA_IR_FRACTION);
+	p->mp_fld_vport_qos_data_burst_size =
+		nthw_register_get_field(p->mp_reg_vport_qos_data, EPP_VPORT_QOS_DATA_BS);
+
+	p->mp_reg_queue_vport_control =
+		nthw_module_get_register(p->mp_mod_epp, EPP_QUEUE_VPORT_CTRL);
+	p->mp_fld_queue_vport_control_adr =
+		nthw_register_get_field(p->mp_reg_queue_vport_control, EPP_QUEUE_VPORT_CTRL_ADR);
+	p->mp_fld_queue_vport_control_cnt =
+		nthw_register_get_field(p->mp_reg_queue_vport_control, EPP_QUEUE_VPORT_CTRL_CNT);
+
+	p->mp_reg_queue_vport_data = nthw_module_get_register(p->mp_mod_epp, EPP_QUEUE_VPORT_DATA);
+	p->mp_fld_queue_vport_data_vport =
+		nthw_register_get_field(p->mp_reg_queue_vport_data, EPP_QUEUE_VPORT_DATA_VPORT);
+
+	return 0;
+}
+
+int nthw_epp_setup(nthw_epp_t *p)
+{
+	if (p == NULL)
+		return 0;
+
+	/* Set recieps for 2 first records */
+	nthw_field_set_val32(p->mp_fld_reciepe_memory_control_cnt, 1);
+
+	/* Zero all categories */
+	for (int i = 0; i < p->mn_epp_categories; ++i) {
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_control_adr, i);
+		nthw_register_flush(p->mp_reg_reciepe_memory_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_tx_mtu_epp_enable, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_queue_mtu_epp_enable, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_size_adjust_tx_port, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_size_adjust_virtual_port, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_fixed18b_l2_mtu, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_txp_qos_epp_enable, 0);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_queue_qos_epp_enable, 0);
+		nthw_register_flush(p->mp_reg_reciepe_memory_data, 1);
+	}
+
+	for (int i = 0; i < NRECIPE; ++i) {
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_control_adr, i);
+		nthw_register_flush(p->mp_reg_reciepe_memory_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_tx_mtu_epp_enable, 1);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_queue_mtu_epp_enable, 1);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_size_adjust_tx_port,
+			rcp_data_size_adjust_txp[i]);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_size_adjust_virtual_port,
+			rcp_data_size_adjust_vport[i]);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_fixed18b_l2_mtu, 1);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_txp_qos_epp_enable, 1);
+		nthw_field_set_val32(p->mp_fld_reciepe_memory_data_queue_qos_epp_enable, 1);
+		nthw_register_flush(p->mp_reg_reciepe_memory_data, 1);
+	}
+
+	/* phy mtu setup */
+	nthw_field_set_val32(p->mp_fld_txp_port_mtu_control_cnt, 1);
+
+	for (int i = 0; i < 2; ++i) {
+		nthw_field_set_val32(p->mp_fld_txp_port_mtu_control_adr, i);
+		nthw_register_flush(p->mp_reg_txp_port_mtu_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_txp_port_mtu_data_max_mtu, MTUINITVAL);
+		nthw_register_flush(p->mp_reg_txp_port_mtu_data, 1);
+	}
+
+	/* phy QoS setup */
+	nthw_field_set_val32(p->mp_fld_txp_qos_control_cnt, 1);
+
+	for (int i = 0; i < 2; ++i) {
+		nthw_field_set_val32(p->mp_fld_txp_qos_control_adr, i);
+		nthw_register_flush(p->mp_reg_txp_qos_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_txp_qos_data_enable, 0);
+		nthw_register_flush(p->mp_reg_txp_qos_data, 1);
+	}
+
+	/* virt mtu setup */
+	nthw_field_set_val32(p->mp_fld_queue_mtu_control_cnt, 1);
+
+	for (int i = 0; i < 128; ++i) {
+		nthw_field_set_val32(p->mp_fld_queue_mtu_control_adr, i);
+		nthw_register_flush(p->mp_reg_queue_mtu_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_queue_mtu_data_max_mtu, MTUINITVAL);
+		nthw_register_flush(p->mp_reg_queue_mtu_data, 1);
+	}
+
+	/* virt QoS setup */
+	nthw_field_set_val32(p->mp_fld_vport_qos_control_cnt, 1);
+
+	for (int i = 0; i < 128; ++i) {
+		nthw_field_set_val32(p->mp_fld_vport_qos_control_adr, i);
+		nthw_register_flush(p->mp_reg_vport_qos_control, 1);
+
+		nthw_field_set_val32(p->mp_fld_vport_qos_data_enable, 0);
+		nthw_register_flush(p->mp_reg_vport_qos_data, 1);
+	}
+
+	return 0;
+}
diff --git a/drivers/net/ntnic/nthw/nthw_epp.h b/drivers/net/ntnic/nthw/nthw_epp.h
new file mode 100644
index 0000000000..413a812273
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_epp.h
@@ -0,0 +1,92 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef NTHW_EPP_HPP_
+#define NTHW_EPP_HPP_
+
+/* VXLAN adds extra 50 bytes */
+#define VXLANDATASIZEADJUST 50
+#define VXLANDATASIZEADJUSTIPV6 70
+#define MTUINITVAL 1500
+#define NRECIPE 3
+
+/* List of size adjust values to put in the recipe memory data register at startup */
+static const int rcp_data_size_adjust_txp[NRECIPE] = { 0, VXLANDATASIZEADJUST,
+		VXLANDATASIZEADJUSTIPV6
+	};
+static const int rcp_data_size_adjust_vport[NRECIPE] = { 0, VXLANDATASIZEADJUST,
+		VXLANDATASIZEADJUSTIPV6
+	};
+
+struct nthw_epp_s {
+	nthw_fpga_t *mp_fpga;
+	nthw_module_t *mp_mod_epp;
+	int mn_instance;
+	int mn_epp_categories;
+
+	nthw_register_t *mp_reg_reciepe_memory_control;
+	nthw_field_t *mp_fld_reciepe_memory_control_adr;
+	nthw_field_t *mp_fld_reciepe_memory_control_cnt;
+
+	nthw_register_t *mp_reg_reciepe_memory_data;
+	nthw_field_t *mp_fld_reciepe_memory_data_tx_mtu_epp_enable;
+	nthw_field_t *mp_fld_reciepe_memory_data_queue_mtu_epp_enable;
+	nthw_field_t *mp_fld_reciepe_memory_data_size_adjust_tx_port;
+	nthw_field_t *mp_fld_reciepe_memory_data_size_adjust_virtual_port;
+	nthw_field_t *mp_fld_reciepe_memory_data_fixed18b_l2_mtu;
+	nthw_field_t *mp_fld_reciepe_memory_data_txp_qos_epp_enable;
+	nthw_field_t *mp_fld_reciepe_memory_data_queue_qos_epp_enable;
+
+	nthw_register_t *mp_reg_txp_port_mtu_control;
+	nthw_field_t *mp_fld_txp_port_mtu_control_adr;
+	nthw_field_t *mp_fld_txp_port_mtu_control_cnt;
+
+	nthw_register_t *mp_reg_txp_port_mtu_data;
+	nthw_field_t *mp_fld_txp_port_mtu_data_max_mtu;
+
+	nthw_register_t *mp_reg_queue_mtu_control;
+	nthw_field_t *mp_fld_queue_mtu_control_adr;
+	nthw_field_t *mp_fld_queue_mtu_control_cnt;
+
+	nthw_register_t *mp_reg_queue_mtu_data;
+	nthw_field_t *mp_fld_queue_mtu_data_max_mtu;
+
+	nthw_register_t *mp_reg_txp_qos_control;
+	nthw_field_t *mp_fld_txp_qos_control_adr;
+	nthw_field_t *mp_fld_txp_qos_control_cnt;
+
+	nthw_register_t *mp_reg_txp_qos_data;
+	nthw_field_t *mp_fld_txp_qos_data_enable;
+	nthw_field_t *mp_fld_txp_qos_data_information_rate;
+	nthw_field_t *mp_fld_txp_qos_data_information_rate_fractional;
+	nthw_field_t *mp_fld_txp_qos_data_burst_size;
+
+	nthw_register_t *mp_reg_vport_qos_control;
+	nthw_field_t *mp_fld_vport_qos_control_adr;
+	nthw_field_t *mp_fld_vport_qos_control_cnt;
+
+	nthw_register_t *mp_reg_vport_qos_data;
+	nthw_field_t *mp_fld_vport_qos_data_enable;
+	nthw_field_t *mp_fld_vport_qos_data_information_rate;
+	nthw_field_t *mp_fld_vport_qos_data_information_rate_fractional;
+	nthw_field_t *mp_fld_vport_qos_data_burst_size;
+
+	nthw_register_t *mp_reg_queue_vport_control;
+	nthw_field_t *mp_fld_queue_vport_control_adr;
+	nthw_field_t *mp_fld_queue_vport_control_cnt;
+
+	nthw_register_t *mp_reg_queue_vport_data;
+	nthw_field_t *mp_fld_queue_vport_data_vport;
+};
+
+typedef struct nthw_epp_s nthw_epp_t;
+
+nthw_epp_t *nthw_epp_new(void);
+
+int nthw_epp_present(nthw_fpga_t *p_fpga, int n_instance);
+int nthw_epp_init(nthw_epp_t *p, nthw_fpga_t *p_fpga, int n_instance);
+int nthw_epp_setup(nthw_epp_t *p);
+
+#endif	/* NTHW_EPP_HPP_ */
diff --git a/drivers/net/ntnic/nthw/nthw_helper.h b/drivers/net/ntnic/nthw/nthw_helper.h
new file mode 100644
index 0000000000..d1bd5cec79
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_helper.h
@@ -0,0 +1,30 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_HELPER_H__
+#define __NTHW_HELPER_H__
+
+#include <unistd.h>
+#include <stdint.h>
+#include <inttypes.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <string.h>
+#include <assert.h>
+
+#ifndef PRIXPTR
+#define PRIXPTR "llX"
+#endif
+
+#ifndef UINT8_MAX
+#define UINT8_MAX (U8_MAX)
+#endif
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
+#endif	/* __NTHW_HELPER_H__ */
diff --git a/drivers/net/ntnic/nthw/nthw_platform.c b/drivers/net/ntnic/nthw/nthw_platform.c
new file mode 100644
index 0000000000..510841f2af
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_platform.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include "nthw_platform_drv.h"
+
+nthw_adapter_id_t nthw_platform_get_nthw_adapter_id(const uint16_t n_pci_device_id)
+{
+	switch (n_pci_device_id) {
+	case NT_HW_PCI_DEVICE_ID_NT40E3:
+		return NT_HW_ADAPTER_ID_NT40E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT100E3:
+		return NT_HW_ADAPTER_ID_NT100E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT80E3:
+		return NT_HW_ADAPTER_ID_NT80E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT40A00:
+		return NT_HW_ADAPTER_ID_NT40E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT40A01:
+		return NT_HW_ADAPTER_ID_NT40E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT200E3:
+		return NT_HW_ADAPTER_ID_NT200E3;
+
+	case NT_HW_PCI_DEVICE_ID_NT200A01:
+		return NT_HW_ADAPTER_ID_NT200A01;
+
+	case NT_HW_PCI_DEVICE_ID_NT200D01:
+		return NT_HW_ADAPTER_ID_NT200D01;
+
+	case NT_HW_PCI_DEVICE_ID_NT200A02_LENOVO:
+	case NT_HW_PCI_DEVICE_ID_NT200A02:
+		return NT_HW_ADAPTER_ID_NT200A02;
+
+	case NT_HW_PCI_DEVICE_ID_NT50B01_LENOVO:
+	case NT_HW_PCI_DEVICE_ID_NT50B01:
+		return NT_HW_ADAPTER_ID_NT50B01;
+
+	case NT_HW_PCI_DEVICE_ID_NT100A01:
+		return NT_HW_ADAPTER_ID_NT100A01;
+
+	case NT_HW_PCI_DEVICE_ID_NT400D11:
+		return NT_HW_ADAPTER_ID_NT400D11;
+
+	default:
+		return NT_HW_ADAPTER_ID_UNKNOWN;
+	}
+}
diff --git a/drivers/net/ntnic/nthw/nthw_platform_drv.h b/drivers/net/ntnic/nthw/nthw_platform_drv.h
new file mode 100644
index 0000000000..96245ffb3e
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_platform_drv.h
@@ -0,0 +1,49 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_PLATFORM_DRV_H__
+#define __NTHW_PLATFORM_DRV_H__
+
+#include "nthw_helper.h"
+
+#define NT_HW_PCI_VENDOR_ID (0x18f4)
+#define NT_HW_PCI_VENDOR_ID_LENOVO (0x17aa)
+
+#define NT_HW_PCI_DEVICE_ID_NT40E3 (0x145)
+#define NT_HW_PCI_DEVICE_ID_NT100E3 (0x155)
+#define NT_HW_PCI_DEVICE_ID_NT80E3 (0x165)
+#define NT_HW_PCI_DEVICE_ID_NT40A00 (0x175)	/* ehrmmm bummer */
+#define NT_HW_PCI_DEVICE_ID_NT40A01 (0x185)
+#define NT_HW_PCI_DEVICE_ID_NT200E3 (0x195)
+#define NT_HW_PCI_DEVICE_ID_NT200A01 (0x1A5)
+#define NT_HW_PCI_DEVICE_ID_NT200D01 (0x1B5)
+#define NT_HW_PCI_DEVICE_ID_NT200A02 (0x1C5)
+#define NT_HW_PCI_DEVICE_ID_NT50B01 (0x1D5)
+#define NT_HW_PCI_DEVICE_ID_NT100A01 (0x1E5)
+#define NT_HW_PCI_DEVICE_ID_NT400D11 (0x215)
+
+#define NT_HW_PCI_DEVICE_ID_NT200A02_LENOVO (0x05a1)
+#define NT_HW_PCI_DEVICE_ID_NT50B01_LENOVO (0x05b1)
+
+enum nthw_adapter_id_e {
+	NT_HW_ADAPTER_ID_UNKNOWN = 0,
+	NT_HW_ADAPTER_ID_NT40E3,
+	NT_HW_ADAPTER_ID_NT40A01 = NT_HW_ADAPTER_ID_NT40E3,
+	NT_HW_ADAPTER_ID_NT50B01,
+	NT_HW_ADAPTER_ID_NT80E3,
+	NT_HW_ADAPTER_ID_NT100E3,
+	NT_HW_ADAPTER_ID_NT100A01,
+	NT_HW_ADAPTER_ID_NT200E3,
+	NT_HW_ADAPTER_ID_NT200A01,
+	NT_HW_ADAPTER_ID_NT200D01,
+	NT_HW_ADAPTER_ID_NT200A02,
+	NT_HW_ADAPTER_ID_NT400D11,
+};
+
+typedef enum nthw_adapter_id_e nthw_adapter_id_t;
+
+nthw_adapter_id_t nthw_platform_get_nthw_adapter_id(const uint16_t n_pci_device_id);
+
+#endif	/* __NTHW_PLATFORM_DRV_H__ */
diff --git a/drivers/net/ntnic/nthw/nthw_profile.h b/drivers/net/ntnic/nthw/nthw_profile.h
new file mode 100644
index 0000000000..d7ac30b20d
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_profile.h
@@ -0,0 +1,16 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_PROFILE_H__
+#define __NTHW_PROFILE_H__
+
+enum fpga_info_profile {
+	FPGA_INFO_PROFILE_UNKNOWN = 0,
+	FPGA_INFO_PROFILE_VSWITCH = 1,
+	FPGA_INFO_PROFILE_INLINE = 2,
+	FPGA_INFO_PROFILE_CAPTURE = 3,
+};
+
+#endif	/* __NTHW_PROFILE_H__ */
diff --git a/drivers/net/ntnic/nthw/nthw_rac.c b/drivers/net/ntnic/nthw/nthw_rac.c
new file mode 100644
index 0000000000..e0a8847d08
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_rac.c
@@ -0,0 +1,801 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include "nt_util.h"
+#include "ntlog.h"
+
+#include "nthw_drv.h"
+#include "nthw_register.h"
+#include "nthw_rac.h"
+
+#include <pthread.h>
+
+/*
+ * Prevent that RAB echo debug trace ever gets into a release build
+ */
+#if defined(DEBUG)
+#undef RAB_DEBUG_ECHO
+#else
+#undef RAB_DEBUG_ECHO
+#endif	/* DEBUG */
+
+#define RAB_DMA_WAIT (1000000)
+
+#define RAB_READ (0x01)
+#define RAB_WRITE (0x02)
+#define RAB_ECHO (0x08)
+#define RAB_COMPLETION (0x0F)
+
+#define RAB_OPR_LO (28)
+#define RAB_OPR_HI (31)
+#define RAB_OPR_BW (4)
+
+#define RAB_CNT_LO (20)
+#define RAB_CNT_HI (27)
+#define RAB_CNT_BW (8)
+
+#define RAB_BUSID_LO (16)
+#define RAB_BUSID_HI (19)
+#define RAB_BUSID_BW (4)
+
+#define RAB_ADDR_LO (0)
+#define RAB_ADDR_HI (15)
+#define RAB_ADDR_BW (16)
+
+nthw_rac_t *nthw_rac_new(void)
+{
+	nthw_rac_t *p = malloc(sizeof(nthw_rac_t));
+	memset(p, 0, sizeof(nthw_rac_t));
+	return p;
+}
+
+int nthw_rac_init(nthw_rac_t *p, nthw_fpga_t *p_fpga, struct fpga_info_s *p_fpga_info)
+{
+	assert(p_fpga_info);
+
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	nthw_module_t *p_mod = nthw_fpga_query_module(p_fpga, MOD_RAC, 0);
+
+	if (p == NULL)
+		return p_mod == NULL ? -1 : 0;
+
+	if (p_mod == NULL) {
+		NT_LOG(ERR, NTHW, "%s: RAC %d: no such instance\n", p_adapter_id_str, 0);
+		return -1;
+	}
+
+	p->mp_fpga = p_fpga;
+	p->mp_mod_rac = p_mod;
+
+	/* Params */
+	p->mn_param_rac_rab_interfaces =
+		nthw_fpga_get_product_param(p->mp_fpga, NT_RAC_RAB_INTERFACES, 3);
+	NT_LOG(DBG, NTHW, "%s: NT_RAC_RAB_INTERFACES=%d\n", p_adapter_id_str,
+		p->mn_param_rac_rab_interfaces);
+
+	p->mn_param_rac_rab_ob_update =
+		nthw_fpga_get_product_param(p->mp_fpga, NT_RAC_RAB_OB_UPDATE, 0);
+	NT_LOG(DBG, NTHW, "%s: NT_RAC_RAB_OB_UPDATE=%d\n", p_adapter_id_str,
+		p->mn_param_rac_rab_ob_update);
+
+	/* Optional dummy test registers */
+	p->mp_reg_dummy0 = nthw_module_query_register(p->mp_mod_rac, RAC_DUMMY0);
+	p->mp_reg_dummy1 = nthw_module_query_register(p->mp_mod_rac, RAC_DUMMY1);
+	p->mp_reg_dummy2 = nthw_module_query_register(p->mp_mod_rac, RAC_DUMMY2);
+
+	p->mp_reg_rab_init = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_INIT);
+	p->mp_fld_rab_init = nthw_register_get_field(p->mp_reg_rab_init, RAC_RAB_INIT_RAB);
+	p->mn_fld_rab_init_bw = nthw_field_get_bit_width(p->mp_fld_rab_init);
+	p->mn_fld_rab_init_mask = nthw_field_get_mask(p->mp_fld_rab_init);
+
+	/* RAC_RAB_INIT_RAB reg/field sanity checks: */
+	assert(p->mn_fld_rab_init_mask == ((1UL << p->mn_fld_rab_init_bw) - 1));
+	assert(p->mn_fld_rab_init_bw == p->mn_param_rac_rab_interfaces);
+
+	p->mp_reg_dbg_ctrl = nthw_module_query_register(p->mp_mod_rac, RAC_DBG_CTRL);
+
+	if (p->mp_reg_dbg_ctrl)
+		p->mp_fld_dbg_ctrl = nthw_register_query_field(p->mp_reg_dbg_ctrl, RAC_DBG_CTRL_C);
+
+	else
+		p->mp_fld_dbg_ctrl = NULL;
+
+	p->mp_reg_dbg_data = nthw_module_query_register(p->mp_mod_rac, RAC_DBG_DATA);
+
+	if (p->mp_reg_dbg_data)
+		p->mp_fld_dbg_data = nthw_register_query_field(p->mp_reg_dbg_data, RAC_DBG_DATA_D);
+
+	else
+		p->mp_reg_dbg_data = NULL;
+
+	p->mp_reg_rab_ib_data = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_IB_DATA);
+	p->mp_fld_rab_ib_data = nthw_register_get_field(p->mp_reg_rab_ib_data, RAC_RAB_IB_DATA_D);
+
+	p->mp_reg_rab_ob_data = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_OB_DATA);
+	p->mp_fld_rab_ob_data = nthw_register_get_field(p->mp_reg_rab_ob_data, RAC_RAB_OB_DATA_D);
+
+	p->mp_reg_rab_buf_free = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_BUF_FREE);
+	p->mp_fld_rab_buf_free_ib_free =
+		nthw_register_get_field(p->mp_reg_rab_buf_free, RAC_RAB_BUF_FREE_IB_FREE);
+	p->mp_fld_rab_buf_free_ib_ovf =
+		nthw_register_get_field(p->mp_reg_rab_buf_free, RAC_RAB_BUF_FREE_IB_OVF);
+	p->mp_fld_rab_buf_free_ob_free =
+		nthw_register_get_field(p->mp_reg_rab_buf_free, RAC_RAB_BUF_FREE_OB_FREE);
+	p->mp_fld_rab_buf_free_ob_ovf =
+		nthw_register_get_field(p->mp_reg_rab_buf_free, RAC_RAB_BUF_FREE_OB_OVF);
+	p->mp_fld_rab_buf_free_timeout =
+		nthw_register_get_field(p->mp_reg_rab_buf_free, RAC_RAB_BUF_FREE_TIMEOUT);
+
+	p->mp_reg_rab_buf_used = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_BUF_USED);
+	p->mp_fld_rab_buf_used_ib_used =
+		nthw_register_get_field(p->mp_reg_rab_buf_used, RAC_RAB_BUF_USED_IB_USED);
+	p->mp_fld_rab_buf_used_ob_used =
+		nthw_register_get_field(p->mp_reg_rab_buf_used, RAC_RAB_BUF_USED_OB_USED);
+	p->mp_fld_rab_buf_used_flush =
+		nthw_register_get_field(p->mp_reg_rab_buf_used, RAC_RAB_BUF_USED_FLUSH);
+
+	/*
+	 * RAC_RAB_DMA regs are optional - only found in real
+	 * NT4GA - not found in 9231/9232 and earlier
+	 */
+	p->mp_reg_rab_dma_ib_lo = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_IB_LO);
+	p->mp_fld_rab_dma_ib_lo_phy_addr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ib_lo, RAC_RAB_DMA_IB_LO_PHYADDR);
+
+	p->mp_reg_rab_dma_ib_hi = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_IB_HI);
+	p->mp_fld_rab_dma_ib_hi_phy_addr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ib_hi, RAC_RAB_DMA_IB_HI_PHYADDR);
+
+	p->mp_reg_rab_dma_ob_lo = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_OB_LO);
+	p->mp_fld_rab_dma_ob_lo_phy_addr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ob_lo, RAC_RAB_DMA_OB_LO_PHYADDR);
+
+	p->mp_reg_rab_dma_ob_hi = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_OB_HI);
+	p->mp_fld_rab_dma_ob_hi_phy_addr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ob_hi, RAC_RAB_DMA_OB_HI_PHYADDR);
+
+	p->mp_reg_rab_dma_ib_wr = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_IB_WR);
+	p->mp_fld_rab_dma_ib_wr_ptr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ib_wr, RAC_RAB_DMA_IB_WR_PTR);
+
+	p->mp_reg_rab_dma_ib_rd = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_IB_RD);
+	p->mp_fld_rab_dma_ib_rd_ptr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ib_rd, RAC_RAB_DMA_IB_RD_PTR);
+
+	p->mp_reg_rab_dma_ob_wr = nthw_module_get_register(p->mp_mod_rac, RAC_RAB_DMA_OB_WR);
+	p->mp_fld_rab_dma_ob_wr_ptr =
+		nthw_register_get_field(p->mp_reg_rab_dma_ob_wr, RAC_RAB_DMA_OB_WR_PTR);
+
+	p->RAC_RAB_INIT_ADDR = nthw_register_get_address(p->mp_reg_rab_init);
+	p->RAC_RAB_IB_DATA_ADDR = nthw_register_get_address(p->mp_reg_rab_ib_data);
+	p->RAC_RAB_OB_DATA_ADDR = nthw_register_get_address(p->mp_reg_rab_ob_data);
+	p->RAC_RAB_BUF_FREE_ADDR = nthw_register_get_address(p->mp_reg_rab_buf_free);
+	p->RAC_RAB_BUF_USED_ADDR = nthw_register_get_address(p->mp_reg_rab_buf_used);
+
+	/*
+	 * RAC_RAB_DMA regs are optional - only found in real NT4GA - not found in 9231/9232 and
+	 * earlier
+	 */
+
+	p->RAC_RAB_DMA_IB_LO_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ib_lo);
+	p->RAC_RAB_DMA_IB_HI_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ib_hi);
+	p->RAC_RAB_DMA_OB_LO_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ob_lo);
+	p->RAC_RAB_DMA_OB_HI_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ob_hi);
+	p->RAC_RAB_DMA_IB_RD_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ib_rd);
+	p->RAC_RAB_DMA_OB_WR_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ob_wr);
+	p->RAC_RAB_DMA_IB_WR_ADDR = nthw_register_get_address(p->mp_reg_rab_dma_ib_wr);
+
+	p->RAC_RAB_BUF_FREE_IB_FREE_MASK = nthw_field_get_mask(p->mp_fld_rab_buf_free_ib_free);
+	p->RAC_RAB_BUF_FREE_OB_FREE_MASK = nthw_field_get_mask(p->mp_fld_rab_buf_free_ob_free);
+	p->RAC_RAB_BUF_USED_IB_USED_MASK = nthw_field_get_mask(p->mp_fld_rab_buf_used_ib_used);
+	p->RAC_RAB_BUF_USED_OB_USED_MASK = nthw_field_get_mask(p->mp_fld_rab_buf_used_ob_used);
+
+	p->RAC_RAB_BUF_USED_FLUSH_MASK = nthw_field_get_mask(p->mp_fld_rab_buf_used_flush);
+
+	p->RAC_RAB_BUF_USED_OB_USED_LOW =
+		nthw_field_get_bit_pos_low(p->mp_fld_rab_buf_used_ob_used);
+
+	p->mp_reg_rab_nmb_rd = nthw_module_query_register(p->mp_mod_rac, RAC_NMB_RD_ADR);
+
+	if (p->mp_reg_rab_nmb_rd)
+		p->RAC_NMB_RD_ADR_ADDR = nthw_register_get_address(p->mp_reg_rab_nmb_rd);
+
+	p->mp_reg_rab_nmb_data = nthw_module_query_register(p->mp_mod_rac, RAC_NMB_DATA);
+
+	if (p->mp_reg_rab_nmb_data)
+		p->RAC_NMB_DATA_ADDR = nthw_register_get_address(p->mp_reg_rab_nmb_data);
+
+	p->mp_reg_rab_nmb_wr = nthw_module_query_register(p->mp_mod_rac, RAC_NMB_WR_ADR);
+
+	if (p->mp_reg_rab_nmb_wr)
+		p->RAC_NMB_WR_ADR_ADDR = nthw_register_get_address(p->mp_reg_rab_nmb_wr);
+
+	p->mp_reg_rab_nmb_status = nthw_module_query_register(p->mp_mod_rac, RAC_NMB_STATUS);
+
+	if (p->mp_reg_rab_nmb_status)
+		p->RAC_NMB_STATUS_ADDR = nthw_register_get_address(p->mp_reg_rab_nmb_status);
+
+	p->m_dma = NULL;
+
+	{
+		/*
+		 * RAC is a primary communication channel - debug will be messy
+		 * turn off debug by default - except for rac_rab_init
+		 * NOTE: currently debug will not work - due to optimizations
+		 */
+		const int n_debug_mode = nthw_module_get_debug_mode(p->mp_mod_rac);
+
+		if (n_debug_mode && n_debug_mode <= 0xff) {
+			nthw_module_set_debug_mode(p->mp_mod_rac, 0);
+			nthw_register_set_debug_mode(p->mp_reg_rab_init, n_debug_mode);
+		}
+	}
+
+	pthread_mutex_init(&p->m_mutex, NULL);
+
+	return 0;
+}
+
+int nthw_rac_get_rab_interface_count(const nthw_rac_t *p)
+{
+	return p->mn_param_rac_rab_interfaces;
+}
+
+/* private function for internal RAC operations -
+ * improves log flexibility and prevents log flooding
+ */
+static void nthw_rac_reg_read32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t *p_data)
+{
+	*p_data = *(volatile uint32_t *)((uint8_t *)p_fpga_info->bar0_addr + reg_addr);
+}
+
+/* private function for internal RAC operations -
+ * improves log flexibility and prevents log flooding
+ */
+static void nthw_rac_reg_write32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t n_data)
+{
+	*(volatile uint32_t *)((uint8_t *)p_fpga_info->bar0_addr + reg_addr) = n_data;
+}
+
+static inline int _nthw_rac_wait_for_rab_done(const nthw_rac_t *p, uint32_t address,
+	uint32_t word_cnt)
+{
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	uint32_t used = 0;
+	uint32_t retry;
+
+	for (retry = 0; retry < 100000; retry++) {
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR, &used);
+		used = (used & p->RAC_RAB_BUF_USED_OB_USED_MASK) >>
+			p->RAC_RAB_BUF_USED_OB_USED_LOW;
+
+		if (used >= word_cnt)
+			break;
+	}
+
+	if (used < word_cnt) {
+		NT_LOG(ERR, NTHW, "%s: Fail rab bus r/w addr=0x%08X used=%x wordcount=%d\n",
+			p_adapter_id_str, address, used, word_cnt);
+		return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * NT_PCI_REG_P9xyz_RAC_RAB_INIT
+ *
+ * Initializes (resets) the programmable registers on the Register Access Busses (RAB).
+ * This initialization must be performed by software as part of the driver load procedure.
+ *
+ * Bit n of this field initializes the programmable registers on RAB interface n.
+ * Software must write one to the bit and then clear the bit again.
+ *
+ * All RAB module registers will be reset to their defaults.
+ * This includes the product specific RESET module (eg RST9xyz)
+ * As a consequence of this behavior the official reset sequence
+ * must be excersised - as all RAB modules will be held in reset.
+ */
+int nthw_rac_rab_init(nthw_rac_t *p, uint32_t n_rab_intf_mask)
+{
+	/*
+	 * Write rac_rab_init
+	 * Perform operation twice - first to get trace of operation -
+	 * second to get things done...
+	 */
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	nthw_field_set_val_flush32(p->mp_fld_rab_init, n_rab_intf_mask);
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_INIT_ADDR, n_rab_intf_mask);
+	return 0;
+}
+
+int nthw_rac_rab_reset(nthw_rac_t *p)
+{
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	(void)p_adapter_id_str;
+
+	/* RAC RAB bus "flip/flip" reset */
+	const int n_rac_rab_bus_count = nthw_rac_get_rab_interface_count(p);
+	const int n_rac_rab_bus_mask = (1 << n_rac_rab_bus_count) - 1;
+
+	NT_LOG(DBG, NTHW, "%s: NT_RAC_RAB_INTERFACES=%d (0x%02X)\n", p_adapter_id_str,
+		n_rac_rab_bus_count, n_rac_rab_bus_mask);
+	assert(n_rac_rab_bus_count);
+	assert(n_rac_rab_bus_mask);
+
+	/* RAC RAB bus "flip/flip" reset first stage - new impl (ref RMT#37020) */
+	nthw_rac_rab_init(p, 0);
+	nthw_rac_rab_init(p, n_rac_rab_bus_mask);
+	nthw_rac_rab_init(p, n_rac_rab_bus_mask & ~0x01);
+
+	return 0;
+}
+
+int nthw_rac_rab_setup(nthw_rac_t *p)
+{
+	int rc = 0;
+
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	uint32_t n_dma_buf_size = 2L * RAB_DMA_BUF_CNT * sizeof(uint32_t);
+	const size_t align_size = nt_util_align_size(n_dma_buf_size);
+	int numa_node = p_fpga_info->numa_node;
+	uint64_t dma_addr;
+	uint32_t buf;
+
+	if (!p->m_dma) {
+		struct nt_dma_s *vfio_dma;
+		/* FPGA needs Page alignment (4K) */
+		vfio_dma = nt_dma_alloc(align_size, 0x1000, numa_node);
+
+		if (vfio_dma == NULL) {
+			NT_LOG(ERR, ETHDEV, "%s: nt_dma_alloc failed\n", __func__);
+			return -1;
+		}
+
+		p->m_dma_in_buf = (uint32_t *)vfio_dma->addr;
+		p->m_dma_out_buf = p->m_dma_in_buf + RAB_DMA_BUF_CNT;
+		p->m_dma = vfio_dma;
+	}
+
+	/* Setup DMA on the adapter */
+	dma_addr = p->m_dma->iova;
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_DMA_IB_LO_ADDR, dma_addr & 0xffffffff);
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_DMA_IB_HI_ADDR,
+		(uint32_t)(dma_addr >> 32) & 0xffffffff);
+	dma_addr += RAB_DMA_BUF_CNT * sizeof(uint32_t);
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_DMA_OB_LO_ADDR, dma_addr & 0xffffffff);
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_DMA_OB_HI_ADDR,
+		(uint32_t)(dma_addr >> 32) & 0xffffffff);
+
+	/* Set initial value of internal pointers */
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_DMA_IB_RD_ADDR, &buf);
+	p->m_dma_in_ptr_wr = (uint16_t)(buf / sizeof(uint32_t));
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_DMA_OB_WR_ADDR, &buf);
+	p->m_dma_out_ptr_rd = (uint16_t)(buf / sizeof(uint32_t));
+	p->m_in_free = RAB_DMA_BUF_CNT;
+
+	return rc;
+}
+
+void nthw_rac_bar0_read32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t word_cnt, uint32_t *p_data)
+{
+	volatile const uint32_t *const src_addr =
+		(uint32_t *)((uint8_t *)p_fpga_info->bar0_addr + reg_addr);
+
+	for (uint32_t i = 0; i < word_cnt; i++)
+		p_data[i] = src_addr[i];
+}
+
+void nthw_rac_bar0_write32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t word_cnt, const uint32_t *p_data)
+{
+	volatile uint32_t *const dst_addr =
+		(uint32_t *)((uint8_t *)p_fpga_info->bar0_addr + reg_addr);
+
+	for (uint32_t i = 0; i < word_cnt; i++)
+		dst_addr[i] = p_data[i];
+}
+
+int nthw_rac_rab_write32(nthw_rac_t *p, bool trc, nthw_rab_bus_id_t bus_id, uint32_t address,
+	uint32_t word_cnt, const uint32_t *p_data)
+{
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	uint32_t buf_used;
+	uint32_t buf_free;
+	uint32_t in_buf_free;
+	uint32_t out_buf_free;
+	int res = 0;
+
+	if (address > (1 << RAB_ADDR_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal address: value too large %d - max %d\n",
+			p_adapter_id_str, address, (1 << RAB_ADDR_BW));
+		return -1;
+	}
+
+	if (bus_id > (1 << RAB_BUSID_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal bus id: value too large %d - max %d\n",
+			p_adapter_id_str, bus_id, (1 << RAB_BUSID_BW));
+		return -1;
+	}
+
+	if (word_cnt == 0) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal word count: value is zero (%d)\n",
+			p_adapter_id_str, word_cnt);
+		return -1;
+	}
+
+	if (word_cnt > (1 << RAB_CNT_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal word count: value too large %d - max %d\n",
+			p_adapter_id_str, word_cnt, (1 << RAB_CNT_BW));
+		return -1;
+	}
+
+	pthread_mutex_lock(&p->m_mutex);
+
+	if (p->m_dma_active) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal operation: DMA enabled\n", p_adapter_id_str);
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+	/* Read buffer free register */
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, &buf_free);
+
+	in_buf_free = buf_free & p->RAC_RAB_BUF_FREE_IB_FREE_MASK;
+	out_buf_free = (buf_free & p->RAC_RAB_BUF_FREE_OB_FREE_MASK) >> 16;
+
+	/* Read buffer used register */
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR, &buf_used);
+
+	buf_used =
+		buf_used & (p->RAC_RAB_BUF_USED_IB_USED_MASK | p->RAC_RAB_BUF_USED_OB_USED_MASK);
+
+	/*
+	 * Verify that output buffer can hold one completion word,
+	 * input buffer can hold the number of words to be written +
+	 * one write and one completion command
+	 * and that the input and output "used" buffer is 0
+	 */
+	if (out_buf_free >= 1 && in_buf_free >= word_cnt + 2 && buf_used == 0) {
+		const uint32_t rab_oper_cmpl = (RAB_COMPLETION << RAB_OPR_LO);
+		uint32_t rab_echo_oper_cmpl;
+		uint32_t word_cnt_expected = 1;
+		uint32_t rab_oper_wr;
+		uint32_t i;
+
+		rab_oper_wr = (RAB_WRITE << RAB_OPR_LO) |
+			((word_cnt & ((1 << RAB_CNT_BW) - 1)) << RAB_CNT_LO) |
+			(bus_id << RAB_BUSID_LO) | address;
+
+		if (trc) {
+			rab_oper_wr |= (RAB_ECHO << RAB_OPR_LO);
+			word_cnt_expected += word_cnt + 1;
+		}
+
+		/* Write command */
+		nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_IB_DATA_ADDR, rab_oper_wr);
+
+		/* Write data to input buffer */
+		for (i = 0; i < word_cnt; i++)
+			nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_IB_DATA_ADDR, p_data[i]);
+
+		/* Write completion command */
+		nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_IB_DATA_ADDR, rab_oper_cmpl);
+
+		/* Wait until done */
+		if (_nthw_rac_wait_for_rab_done(p, address, word_cnt_expected)) {
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		if (trc) {
+			uint32_t rab_echo_oper_wr;
+			nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR,
+				&rab_echo_oper_wr);
+
+			if (p->mn_param_rac_rab_ob_update)
+				nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, 0);
+
+			if (rab_oper_wr != rab_echo_oper_wr) {
+				NT_LOG(ERR, NTHW,
+					"%s: expected rab read echo oper (0x%08X) - read (0x%08X)\n",
+					p_adapter_id_str, rab_oper_wr, rab_echo_oper_wr);
+			}
+		}
+
+		{
+			/* Read data from output buffer */
+			uint32_t data;
+			char *tmp_string;
+
+			if (trc) {
+				tmp_string = ntlog_helper_str_alloc("Register::write");
+				ntlog_helper_str_add(tmp_string,
+					"(Dev: NA, Bus: RAB%u, Addr: 0x%08X, Cnt: %d, Data:",
+					bus_id, address, word_cnt);
+			}
+
+			for (i = 0; i < word_cnt; i++) {
+				nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, &data);
+
+				if (p->mn_param_rac_rab_ob_update) {
+					nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR,
+						0);
+				}
+
+				if (trc)
+					ntlog_helper_str_add(tmp_string, " 0x%08X", data);
+			}
+
+			if (trc) {
+				ntlog_helper_str_add(tmp_string, ")");
+				NT_LOG(DBG, NTHW, "%s", tmp_string);
+				ntlog_helper_str_free(tmp_string);
+			}
+		}
+
+		/* Read completion from out buffer */
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, &rab_echo_oper_cmpl);
+
+		if (p->mn_param_rac_rab_ob_update)
+			nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, 0);
+
+		if (rab_echo_oper_cmpl != rab_oper_cmpl) {
+			NT_LOG(ERR, NTHW,
+				"%s: RAB: Unexpected value of completion (0x%08X)- inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+				p_adapter_id_str, rab_echo_oper_cmpl, in_buf_free, out_buf_free,
+				buf_used);
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		/* Read buffer free register */
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, &buf_free);
+
+		if (buf_free & 0x80000000) {
+			/* Clear Timeout and overflow bits */
+			nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, 0x0);
+			NT_LOG(ERR, NTHW,
+				"%s: RAB: timeout - Access outside register - bus: %d addr: 0x%08X - inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+				p_adapter_id_str, bus_id, address, in_buf_free, out_buf_free,
+				buf_used);
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		res = 0;
+		goto exit_unlock_res;
+
+	} else {
+		NT_LOG(ERR, NTHW,
+			"%s: RAB: Fail rab bus buffer check - bus: %d addr: 0x%08X wordcount: %d - inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+			p_adapter_id_str, bus_id, address, word_cnt, in_buf_free, out_buf_free,
+			buf_used);
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+exit_unlock_res:
+	pthread_mutex_unlock(&p->m_mutex);
+	return res;
+}
+
+int nthw_rac_rab_read32(nthw_rac_t *p, bool trc, nthw_rab_bus_id_t bus_id, uint32_t address,
+	uint32_t word_cnt, uint32_t *p_data)
+{
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	uint32_t buf_used;
+	uint32_t buf_free;
+	uint32_t in_buf_free;
+	uint32_t out_buf_free;
+	int res = 0;
+
+	pthread_mutex_lock(&p->m_mutex);
+
+	if (address > (1 << RAB_ADDR_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal address: value too large %d - max %d\n",
+			p_adapter_id_str, address, (1 << RAB_ADDR_BW));
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+	if (bus_id > (1 << RAB_BUSID_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal bus id: value too large %d - max %d\n",
+			p_adapter_id_str, bus_id, (1 << RAB_BUSID_BW));
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+	if (word_cnt == 0) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal word count: value is zero (%d)\n",
+			p_adapter_id_str, word_cnt);
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+	if (word_cnt > (1 << RAB_CNT_BW)) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Illegal word count: value too large %d - max %d\n",
+			p_adapter_id_str, word_cnt, (1 << RAB_CNT_BW));
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+	/* Read buffer free register */
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, &buf_free);
+
+	in_buf_free = buf_free & p->RAC_RAB_BUF_FREE_IB_FREE_MASK;
+	out_buf_free = (buf_free & p->RAC_RAB_BUF_FREE_OB_FREE_MASK) >> 16;
+
+	/* Read buffer used register */
+	nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR, &buf_used);
+
+	buf_used =
+		buf_used & (p->RAC_RAB_BUF_USED_IB_USED_MASK | p->RAC_RAB_BUF_USED_OB_USED_MASK);
+
+	/*
+	 * Verify that output buffer can hold the number of words to be read,
+	 * input buffer can hold one read command
+	 * and that the input and output "used" buffer is 0
+	 */
+	if (out_buf_free >= word_cnt && in_buf_free >= 1 && buf_used == 0) {
+		const uint32_t rab_oper_cmpl = (RAB_COMPLETION << RAB_OPR_LO);
+		uint32_t rab_read_oper_cmpl;
+		uint32_t word_cnt_expected = word_cnt + 1;
+		uint32_t rab_oper_rd;
+
+		rab_oper_rd = (RAB_READ << RAB_OPR_LO) |
+			((word_cnt & ((1 << RAB_CNT_BW) - 1)) << RAB_CNT_LO) |
+			(bus_id << RAB_BUSID_LO) | address;
+
+		if (trc) {
+			rab_oper_rd |= (RAB_ECHO << RAB_OPR_LO);
+			word_cnt_expected++;
+		}
+
+		/* Write command */
+		nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_IB_DATA_ADDR, rab_oper_rd);
+
+		/* Write completion command */
+		nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_IB_DATA_ADDR, rab_oper_cmpl);
+
+		/* Wait until done */
+		if (_nthw_rac_wait_for_rab_done(p, address, word_cnt_expected)) {
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		if (trc) {
+			uint32_t rab_echo_oper_rd;
+			nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR,
+				&rab_echo_oper_rd);
+
+			if (p->mn_param_rac_rab_ob_update)
+				nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, 0);
+
+			if (rab_oper_rd != rab_echo_oper_rd) {
+				NT_LOG(ERR, NTHW,
+					"%s: RAB: expected rab read echo oper (0x%08X) - read (0x%08X)\n",
+					p_adapter_id_str, rab_oper_rd, rab_echo_oper_rd);
+			}
+		}
+
+		{
+			/* Read data from output buffer */
+			uint32_t i;
+
+			for (i = 0; i < word_cnt; i++) {
+				nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR,
+					&p_data[i]);
+
+				if (p->mn_param_rac_rab_ob_update) {
+					nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR,
+						0);
+				}
+			}
+
+			if (trc) {
+				char *tmp_string = ntlog_helper_str_alloc("Register::read");
+				ntlog_helper_str_add(tmp_string,
+					"(Dev: NA, Bus: RAB%u, Addr: 0x%08X, Cnt: %d, Data:",
+					bus_id, address, word_cnt);
+
+				for (i = 0; i < word_cnt; i++)
+					ntlog_helper_str_add(tmp_string, " 0x%08X", p_data[i]);
+
+				ntlog_helper_str_add(tmp_string, ")");
+				NT_LOG(DBG, NTHW, "%s", tmp_string);
+				ntlog_helper_str_free(tmp_string);
+			}
+		}
+
+		/* Read completion from out buffer */
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, &rab_read_oper_cmpl);
+
+		if (p->mn_param_rac_rab_ob_update)
+			nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_OB_DATA_ADDR, 0);
+
+		if (rab_read_oper_cmpl != rab_oper_cmpl) {
+			NT_LOG(ERR, NTHW,
+				"%s: RAB: Unexpected value of completion (0x%08X)- inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+				p_adapter_id_str, rab_read_oper_cmpl, in_buf_free, out_buf_free,
+				buf_used);
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		/* Read buffer free register */
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, &buf_free);
+
+		if (buf_free & 0x80000000) {
+			/* Clear Timeout and overflow bits */
+			nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, 0x0);
+			NT_LOG(ERR, NTHW,
+				"%s: RAB: timeout - Access outside register - bus: %d addr: 0x%08X - inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+				p_adapter_id_str, bus_id, address, in_buf_free, out_buf_free,
+				buf_used);
+			res = -1;
+			goto exit_unlock_res;
+		}
+
+		res = 0;
+		goto exit_unlock_res;
+
+	} else {
+		NT_LOG(ERR, NTHW,
+			"%s: RAB: Fail rab bus buffer check - bus: %d addr: 0x%08X wordcount: %d - inBufFree: 0x%08X, outBufFree: 0x%08X, bufUsed: 0x%08X\n",
+			p_adapter_id_str, bus_id, address, word_cnt, in_buf_free, out_buf_free,
+			buf_used);
+		res = -1;
+		goto exit_unlock_res;
+	}
+
+exit_unlock_res:
+	pthread_mutex_unlock(&p->m_mutex);
+	return res;
+}
+
+int nthw_rac_rab_flush(nthw_rac_t *p)
+{
+	const struct fpga_info_s *const p_fpga_info = p->mp_fpga->p_fpga_info;
+	const char *const p_adapter_id_str = p_fpga_info->mp_adapter_id_str;
+	uint32_t data = 0;
+	uint32_t retry;
+	int res = 0;
+
+	pthread_mutex_lock(&p->m_mutex);
+
+	/* Set the flush bit */
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR,
+		p->RAC_RAB_BUF_USED_FLUSH_MASK);
+
+	/* Reset BUF FREE register */
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_BUF_FREE_ADDR, 0x0);
+
+	/* Wait until OB_USED and IB_USED are 0 */
+	for (retry = 0; retry < 100000; retry++) {
+		nthw_rac_reg_read32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR, &data);
+
+		if ((data & 0xFFFFFFFF) == p->RAC_RAB_BUF_USED_FLUSH_MASK)
+			break;
+	}
+
+	if (data != p->RAC_RAB_BUF_USED_FLUSH_MASK) {
+		NT_LOG(ERR, NTHW, "%s: RAB: Rab bus flush error.\n", p_adapter_id_str);
+		res = -1;
+	}
+
+	/* Clear flush bit when done */
+	nthw_rac_reg_write32(p_fpga_info, p->RAC_RAB_BUF_USED_ADDR, 0x0);
+
+	pthread_mutex_unlock(&p->m_mutex);
+	return res;
+}
diff --git a/drivers/net/ntnic/nthw/nthw_rac.h b/drivers/net/ntnic/nthw/nthw_rac.h
new file mode 100644
index 0000000000..44426cb608
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_rac.h
@@ -0,0 +1,154 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_RAC_H__
+#define __NTHW_RAC_H__
+
+#include "nt_util.h"
+#include "nthw_bus.h"
+
+#define RAB_DMA_BUF_CNT (0x4000)
+
+struct nthw_rac {
+	nthw_fpga_t *mp_fpga;
+	nthw_module_t *mp_mod_rac;
+
+	pthread_mutex_t m_mutex;
+
+	int mn_param_rac_rab_interfaces;
+	int mn_param_rac_rab_ob_update;
+
+	nthw_register_t *mp_reg_dummy0;
+	nthw_register_t *mp_reg_dummy1;
+	nthw_register_t *mp_reg_dummy2;
+
+	nthw_register_t *mp_reg_rab_init;
+	nthw_field_t *mp_fld_rab_init;
+
+	int mn_fld_rab_init_bw;
+	uint32_t mn_fld_rab_init_mask;
+
+	nthw_register_t *mp_reg_dbg_ctrl;
+	nthw_field_t *mp_fld_dbg_ctrl;
+
+	nthw_register_t *mp_reg_dbg_data;
+	nthw_field_t *mp_fld_dbg_data;
+
+	nthw_register_t *mp_reg_rab_ib_data;
+	nthw_field_t *mp_fld_rab_ib_data;
+
+	nthw_register_t *mp_reg_rab_ob_data;
+	nthw_field_t *mp_fld_rab_ob_data;
+
+	nthw_register_t *mp_reg_rab_buf_free;
+	nthw_field_t *mp_fld_rab_buf_free_ib_free;
+	nthw_field_t *mp_fld_rab_buf_free_ib_ovf;
+	nthw_field_t *mp_fld_rab_buf_free_ob_free;
+	nthw_field_t *mp_fld_rab_buf_free_ob_ovf;
+	nthw_field_t *mp_fld_rab_buf_free_timeout;
+
+	nthw_register_t *mp_reg_rab_buf_used;
+	nthw_field_t *mp_fld_rab_buf_used_ib_used;
+	nthw_field_t *mp_fld_rab_buf_used_ob_used;
+	nthw_field_t *mp_fld_rab_buf_used_flush;
+
+	nthw_register_t *mp_reg_rab_dma_ib_lo;
+	nthw_field_t *mp_fld_rab_dma_ib_lo_phy_addr;
+
+	nthw_register_t *mp_reg_rab_dma_ib_hi;
+	nthw_field_t *mp_fld_rab_dma_ib_hi_phy_addr;
+
+	nthw_register_t *mp_reg_rab_dma_ob_hi;
+	nthw_field_t *mp_fld_rab_dma_ob_hi_phy_addr;
+
+	nthw_register_t *mp_reg_rab_dma_ob_lo;
+	nthw_field_t *mp_fld_rab_dma_ob_lo_phy_addr;
+
+	nthw_register_t *mp_reg_rab_dma_ib_wr;
+	nthw_field_t *mp_fld_rab_dma_ib_wr_ptr;
+
+	nthw_register_t *mp_reg_rab_dma_ib_rd;
+	nthw_field_t *mp_fld_rab_dma_ib_rd_ptr;
+
+	nthw_register_t *mp_reg_rab_dma_ob_wr;
+	nthw_field_t *mp_fld_rab_dma_ob_wr_ptr;
+
+	nthw_register_t *mp_reg_rab_nmb_rd;
+	nthw_register_t *mp_reg_rab_nmb_data;
+	nthw_register_t *mp_reg_rab_nmb_wr;
+	nthw_register_t *mp_reg_rab_nmb_status;
+
+	uint32_t RAC_RAB_INIT_ADDR;
+	uint32_t RAC_RAB_IB_DATA_ADDR;
+	uint32_t RAC_RAB_OB_DATA_ADDR;
+	uint32_t RAC_RAB_BUF_FREE_ADDR;
+	uint32_t RAC_RAB_BUF_USED_ADDR;
+
+	uint32_t RAC_RAB_DMA_IB_LO_ADDR;
+	uint32_t RAC_RAB_DMA_IB_HI_ADDR;
+	uint32_t RAC_RAB_DMA_OB_LO_ADDR;
+	uint32_t RAC_RAB_DMA_OB_HI_ADDR;
+	uint32_t RAC_RAB_DMA_IB_RD_ADDR;
+	uint32_t RAC_RAB_DMA_OB_WR_ADDR;
+	uint32_t RAC_RAB_DMA_IB_WR_ADDR;
+
+	uint32_t RAC_RAB_BUF_FREE_IB_FREE_MASK;
+	uint32_t RAC_RAB_BUF_FREE_OB_FREE_MASK;
+	uint32_t RAC_RAB_BUF_USED_IB_USED_MASK;
+	uint32_t RAC_RAB_BUF_USED_OB_USED_MASK;
+	uint32_t RAC_RAB_BUF_USED_FLUSH_MASK;
+
+	uint32_t RAC_RAB_BUF_USED_OB_USED_LOW;
+
+	uint32_t RAC_NMB_RD_ADR_ADDR;
+	uint32_t RAC_NMB_DATA_ADDR;
+	uint32_t RAC_NMB_WR_ADR_ADDR;
+	uint32_t RAC_NMB_STATUS_ADDR;
+
+	bool m_dma_active;
+
+	struct nt_dma_s *m_dma;
+
+	volatile uint32_t *m_dma_in_buf;
+	volatile uint32_t *m_dma_out_buf;
+
+	uint16_t m_dma_out_ptr_rd;
+	uint16_t m_dma_in_ptr_wr;
+	uint32_t m_in_free;
+};
+
+typedef struct nthw_rac nthw_rac_t;
+typedef struct nthw_rac nthw_rac;
+
+struct dma_buf_ptr {
+	uint32_t size;
+	uint32_t index;
+	volatile uint32_t *base;
+};
+
+nthw_rac_t *nthw_rac_new(void);
+int nthw_rac_init(nthw_rac_t *p, nthw_fpga_t *p_fpga, struct fpga_info_s *p_fpga_info);
+
+int nthw_rac_get_rab_interface_count(const nthw_rac_t *p);
+
+int nthw_rac_rab_init(nthw_rac_t *p, uint32_t n_rab_intf_mask);
+
+int nthw_rac_rab_setup(nthw_rac_t *p);
+
+int nthw_rac_rab_reset(nthw_rac_t *p);
+
+int nthw_rac_rab_write32(nthw_rac_t *p, bool trc, nthw_rab_bus_id_t bus_id, uint32_t address,
+	uint32_t word_cnt, const uint32_t *p_data);
+int nthw_rac_rab_read32(nthw_rac_t *p, bool trc, nthw_rab_bus_id_t bus_id, uint32_t address,
+	uint32_t word_cnt, uint32_t *p_data);
+
+int nthw_rac_rab_flush(nthw_rac_t *p);
+
+void nthw_rac_bar0_read32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t word_cnt, uint32_t *p_data);
+void nthw_rac_bar0_write32(const struct fpga_info_s *p_fpga_info, uint32_t reg_addr,
+	uint32_t word_cnt, const uint32_t *p_data);
+
+#endif	/* __NTHW_RAC_H__ */
diff --git a/drivers/net/ntnic/nthw/nthw_register.h b/drivers/net/ntnic/nthw/nthw_register.h
new file mode 100644
index 0000000000..ecc661a656
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_register.h
@@ -0,0 +1,22 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef NTHW_REGISTER_H_
+#define NTHW_REGISTER_H_
+
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <inttypes.h>
+
+#include "nthw_fpga_model.h"
+
+#include "fpga_model.h"
+
+#include "nthw_fpga_mod_defs.h"
+#include "nthw_fpga_param_defs.h"
+#include "nthw_fpga_reg_defs.h"
+
+#endif	/* NTHW_REGISTER_H_ */
diff --git a/drivers/net/ntnic/nthw/nthw_utils.c b/drivers/net/ntnic/nthw/nthw_utils.c
new file mode 100644
index 0000000000..d06460b67c
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_utils.c
@@ -0,0 +1,53 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#include "ntlog.h"
+
+#include <stdint.h>
+#include <inttypes.h>
+#include <ctype.h>	/* isprint */
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>	/* inet_addr */
+#include <string.h>	/* memset */
+
+#include "nthw_utils.h"
+#include "nthw_helper.h"
+
+int socket_loopback_setup(uint16_t port)
+{
+	int res = 0;
+	struct sockaddr_in serv_addr;
+	int sockfd;
+	int sockval;
+
+	/* socket create and verification */
+	sockfd = socket(AF_INET, SOCK_STREAM, 0);
+
+	if (sockfd == -1) {
+		NT_LOG(ERR, NTHW, "socket creation failed...\n");
+		res = -1;
+	}
+
+	setsockopt(sockfd, SOL_SOCKET, SO_REUSEPORT, &sockval, sizeof(sockval));
+
+	memset(&serv_addr, 0, sizeof(serv_addr));
+	serv_addr.sin_family = AF_INET;
+	serv_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+	serv_addr.sin_port = htons(port);
+
+	if ((bind(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr))) != 0) {
+		NT_LOG(ERR, NTHW, "socket bind failed...\n");
+		res = -1;
+	}
+
+	/* Now server is ready to listen and verification */
+	if ((listen(sockfd, 5)) != 0) {
+		NT_LOG(ERR, NTHW, "Listen failed...\n");
+		res = -1;
+	}
+
+	return res == 0 ? sockfd : res;
+}
diff --git a/drivers/net/ntnic/nthw/nthw_utils.h b/drivers/net/ntnic/nthw/nthw_utils.h
new file mode 100644
index 0000000000..b1ac4977b3
--- /dev/null
+++ b/drivers/net/ntnic/nthw/nthw_utils.h
@@ -0,0 +1,11 @@
+/*
+ * SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2023 Napatech A/S
+ */
+
+#ifndef __NTHW_UTILS_H__
+#define __NTHW_UTILS_H__
+
+int socket_loopback_setup(uint16_t port);
+
+#endif	/* __NTHW_UTILS_H__ */
-- 
2.44.0