diff --git a/drivers/infiniband/hw/irdma/Makefile b/drivers/infiniband/hw/irdma/Makefile
index 3aa63b9..03ceb9e 100644
--- a/drivers/infiniband/hw/irdma/Makefile
+++ b/drivers/infiniband/hw/irdma/Makefile
@@ -16,6 +16,7 @@ irdma-objs := cm.o        \
 	      ig3rdma_if.o\
 	      icrdma_if.o \
               icrdma_hw.o \
+	      ig3rdma_hw.o\
               main.o      \
               pble.o      \
               puda.o      \
diff --git a/drivers/infiniband/hw/irdma/ctrl.c b/drivers/infiniband/hw/irdma/ctrl.c
index 9d7b151..34875cb 100644
--- a/drivers/infiniband/hw/irdma/ctrl.c
+++ b/drivers/infiniband/hw/irdma/ctrl.c
@@ -5677,6 +5677,9 @@ static inline void irdma_sc_init_hw(struct irdma_sc_dev *dev)
 	case IRDMA_GEN_2:
 		icrdma_init_hw(dev);
 		break;
+	case IRDMA_GEN_3:
+		ig3rdma_init_hw(dev);
+		break;
 	}
 }
 
@@ -5744,18 +5747,26 @@ int irdma_sc_dev_init(enum irdma_vers ver, struct irdma_sc_dev *dev,
 
 	irdma_sc_init_hw(dev);
 
-	if (irdma_wait_pe_ready(dev))
-		return -ETIMEDOUT;
+	if (dev->privileged) {
+		if (irdma_wait_pe_ready(dev))
+			return -ETIMEDOUT;
 
-	val = readl(dev->hw_regs[IRDMA_GLPCI_LBARCTRL]);
-	db_size = (u8)FIELD_GET(IRDMA_GLPCI_LBARCTRL_PE_DB_SIZE, val);
-	if (db_size != IRDMA_PE_DB_SIZE_4M && db_size != IRDMA_PE_DB_SIZE_8M) {
-		ibdev_dbg(to_ibdev(dev),
-			  "DEV: RDMA PE doorbell is not enabled in CSR val 0x%x db_size=%d\n",
-			  val, db_size);
-		return -ENODEV;
+		val = readl(dev->hw_regs[IRDMA_GLPCI_LBARCTRL]);
+		db_size = (u8)FIELD_GET(IRDMA_GLPCI_LBARCTRL_PE_DB_SIZE, val);
+		if (db_size != IRDMA_PE_DB_SIZE_4M &&
+		    db_size != IRDMA_PE_DB_SIZE_8M) {
+			ibdev_dbg(to_ibdev(dev),
+				  "DEV: RDMA PE doorbell is not enabled in CSR val 0x%x db_size=%d\n",
+				  val, db_size);
+			return -ENODEV;
+			}
+	} else {
+		ret_code = irdma_vchnl_req_get_reg_layout(dev);
+		if (ret_code)
+			ibdev_dbg(to_ibdev(dev),
+				  "DEV: Get Register layout failed ret = %d\n",
+				  ret_code);
 	}
-	dev->db_addr = dev->hw->hw_addr + (uintptr_t)dev->hw_regs[IRDMA_DB_ADDR_OFFSET];
 
 	return ret_code;
 }
diff --git a/drivers/infiniband/hw/irdma/defs.h b/drivers/infiniband/hw/irdma/defs.h
index 7825896..fe75737 100644
--- a/drivers/infiniband/hw/irdma/defs.h
+++ b/drivers/infiniband/hw/irdma/defs.h
@@ -115,6 +115,7 @@ enum irdma_protocol_used {
 #define IRDMA_FEATURE_BUF_SIZE		(8 * IRDMA_MAX_FEATURES)
 
 #define ENABLE_LOC_MEM			63
+#define IRDMA_ATOMICS_ALLOWED_BIT	1
 #define MAX_PBLE_PER_SD			0x40000
 #define MAX_PBLE_SD_PER_FCN		0x400
 #define MAX_MR_PER_SD			0x8000
@@ -127,7 +128,7 @@ enum irdma_protocol_used {
 #define IRDMA_QP_SW_MAX_RQ_QUANTA	32768
 #define IRDMA_MAX_QP_WRS(max_quanta_per_wr) \
 	((IRDMA_QP_SW_MAX_WQ_QUANTA - IRDMA_SQ_RSVD) / (max_quanta_per_wr))
-
+#define IRDMA_SRQ_MAX_QUANTA 262144
 #define IRDMAQP_TERM_SEND_TERM_AND_FIN		0
 #define IRDMAQP_TERM_SEND_TERM_ONLY		1
 #define IRDMAQP_TERM_SEND_FIN_ONLY		2
@@ -153,8 +154,13 @@ enum irdma_protocol_used {
 #define IRDMA_SQ_RSVD	258
 #define IRDMA_RQ_RSVD	1
 
-#define IRDMA_FEATURE_RTS_AE			1ULL
-#define IRDMA_FEATURE_CQ_RESIZE			2ULL
+#define IRDMA_FEATURE_RTS_AE			BIT_ULL(0)
+#define IRDMA_FEATURE_CQ_RESIZE			BIT_ULL(1)
+#define IRDMA_FEATURE_64_BYTE_CQE		BIT_ULL(5)
+#define IRDMA_FEATURE_ATOMIC_OPS		BIT_ULL(6)
+#define IRDMA_FEATURE_SRQ			BIT_ULL(7)
+#define IRDMA_FEATURE_CQE_TIMESTAMPING		BIT_ULL(8)
+
 #define IRDMAQP_OP_RDMA_WRITE			0x00
 #define IRDMAQP_OP_RDMA_READ			0x01
 #define IRDMAQP_OP_RDMA_SEND			0x03
diff --git a/drivers/infiniband/hw/irdma/i40iw_hw.c b/drivers/infiniband/hw/irdma/i40iw_hw.c
index ce61a27..60c1f2b 100644
--- a/drivers/infiniband/hw/irdma/i40iw_hw.c
+++ b/drivers/infiniband/hw/irdma/i40iw_hw.c
@@ -85,6 +85,7 @@
 	I40E_CQPSQ_CQ_CEQID,
 	I40E_CQPSQ_CQ_CQID,
 	I40E_COMMIT_FPM_CQCNT,
+	I40E_CQPSQ_UPESD_HMCFNID,
 };
 
 static u64 i40iw_shifts[IRDMA_MAX_SHIFTS] = {
@@ -94,6 +95,7 @@
 	I40E_CQPSQ_CQ_CEQID_S,
 	I40E_CQPSQ_CQ_CQID_S,
 	I40E_COMMIT_FPM_CQCNT_S,
+	I40E_CQPSQ_UPESD_HMCFNID_S,
 };
 
 /**
diff --git a/drivers/infiniband/hw/irdma/i40iw_hw.h b/drivers/infiniband/hw/irdma/i40iw_hw.h
index e1db84d..0095b32 100644
--- a/drivers/infiniband/hw/irdma/i40iw_hw.h
+++ b/drivers/infiniband/hw/irdma/i40iw_hw.h
@@ -123,6 +123,8 @@
 #define I40E_CQPSQ_CQ_CQID GENMASK_ULL(15, 0)
 #define I40E_COMMIT_FPM_CQCNT_S 0
 #define I40E_COMMIT_FPM_CQCNT GENMASK_ULL(17, 0)
+#define I40E_CQPSQ_UPESD_HMCFNID_S 0
+#define I40E_CQPSQ_UPESD_HMCFNID GENMASK_ULL(5, 0)
 
 #define I40E_VSIQF_CTL(_VSI)             (0x0020D800 + ((_VSI) * 4))
 
diff --git a/drivers/infiniband/hw/irdma/icrdma_hw.c b/drivers/infiniband/hw/irdma/icrdma_hw.c
index 941d3ed..32f2628 100644
--- a/drivers/infiniband/hw/irdma/icrdma_hw.c
+++ b/drivers/infiniband/hw/irdma/icrdma_hw.c
@@ -38,6 +38,7 @@
 	ICRDMA_CQPSQ_CQ_CEQID,
 	ICRDMA_CQPSQ_CQ_CQID,
 	ICRDMA_COMMIT_FPM_CQCNT,
+	ICRDMA_CQPSQ_UPESD_HMCFNID,
 };
 
 static u64 icrdma_shifts[IRDMA_MAX_SHIFTS] = {
@@ -47,6 +48,7 @@
 	ICRDMA_CQPSQ_CQ_CEQID_S,
 	ICRDMA_CQPSQ_CQ_CQID_S,
 	ICRDMA_COMMIT_FPM_CQCNT_S,
+	ICRDMA_CQPSQ_UPESD_HMCFNID_S,
 };
 
 /**
@@ -194,6 +196,7 @@ void icrdma_init_hw(struct irdma_sc_dev *dev)
 	dev->hw_attrs.max_hw_ord = ICRDMA_MAX_ORD_SIZE;
 	dev->hw_attrs.max_stat_inst = ICRDMA_MAX_STATS_COUNT;
 	dev->hw_attrs.max_stat_idx = IRDMA_HW_STAT_INDEX_MAX_GEN_2;
+	dev->hw_attrs.max_hw_device_pages = ICRDMA_MAX_PUSH_PAGE_COUNT;
 
 	dev->hw_attrs.uk_attrs.min_hw_wq_size = ICRDMA_MIN_WQ_SIZE;
 	dev->hw_attrs.uk_attrs.max_hw_sq_chunk = IRDMA_MAX_QUANTA_PER_WR;
diff --git a/drivers/infiniband/hw/irdma/icrdma_hw.h b/drivers/infiniband/hw/irdma/icrdma_hw.h
index 697b957..d97944a 100644
--- a/drivers/infiniband/hw/irdma/icrdma_hw.h
+++ b/drivers/infiniband/hw/irdma/icrdma_hw.h
@@ -58,14 +58,15 @@
 #define ICRDMA_CQPSQ_CQ_CQID GENMASK_ULL(18, 0)
 #define ICRDMA_COMMIT_FPM_CQCNT_S 0
 #define ICRDMA_COMMIT_FPM_CQCNT GENMASK_ULL(19, 0)
-
+#define ICRDMA_CQPSQ_UPESD_HMCFNID_S 0
+#define ICRDMA_CQPSQ_UPESD_HMCFNID GENMASK_ULL(5, 0)
 enum icrdma_device_caps_const {
 	ICRDMA_MAX_STATS_COUNT = 128,
 
 	ICRDMA_MAX_IRD_SIZE			= 127,
 	ICRDMA_MAX_ORD_SIZE			= 255,
 	ICRDMA_MIN_WQ_SIZE                      = 8 /* WQEs */,
-
+	ICRDMA_MAX_PUSH_PAGE_COUNT		= 256,
 };
 
 void icrdma_init_hw(struct irdma_sc_dev *dev);
diff --git a/drivers/infiniband/hw/irdma/ig3rdma_hw.c b/drivers/infiniband/hw/irdma/ig3rdma_hw.c
new file mode 100644
index 0000000..83ef6af
--- /dev/null
+++ b/drivers/infiniband/hw/irdma/ig3rdma_hw.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2018 - 2024 Intel Corporation */
+#include "osdep.h"
+#include "type.h"
+#include "protos.h"
+#include "ig3rdma_hw.h"
+
+void ig3rdma_init_hw(struct irdma_sc_dev *dev)
+{
+	dev->hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_3;
+	dev->hw_attrs.uk_attrs.max_hw_wq_frags = IG3RDMA_MAX_WQ_FRAGMENT_COUNT;
+	dev->hw_attrs.uk_attrs.max_hw_read_sges = IG3RDMA_MAX_SGE_RD;
+	dev->hw_attrs.uk_attrs.max_hw_sq_chunk = IRDMA_MAX_QUANTA_PER_WR;
+	dev->hw_attrs.first_hw_vf_fpm_id = 0;
+	dev->hw_attrs.max_hw_vf_fpm_id = IG3_MAX_APFS + IG3_MAX_AVFS;
+	dev->hw_attrs.uk_attrs.feature_flags |= IRDMA_FEATURE_64_BYTE_CQE;
+	if (dev->feature_info[IRDMA_FTN_FLAGS] & IRDMA_ATOMICS_ALLOWED_BIT)
+		dev->hw_attrs.uk_attrs.feature_flags |=
+			IRDMA_FEATURE_ATOMIC_OPS;
+	dev->hw_attrs.uk_attrs.feature_flags |= IRDMA_FEATURE_CQE_TIMESTAMPING;
+
+	dev->hw_attrs.uk_attrs.feature_flags |= IRDMA_FEATURE_SRQ;
+	dev->hw_attrs.uk_attrs.feature_flags |= IRDMA_FEATURE_RTS_AE |
+						IRDMA_FEATURE_CQ_RESIZE;
+	dev->hw_attrs.page_size_cap = SZ_4K | SZ_2M | SZ_1G;
+	dev->hw_attrs.max_hw_ird = IG3RDMA_MAX_IRD_SIZE;
+	dev->hw_attrs.max_hw_ord = IG3RDMA_MAX_ORD_SIZE;
+	dev->hw_attrs.uk_attrs.min_hw_wq_size = IG3RDMA_MIN_WQ_SIZE;
+	dev->hw_attrs.uk_attrs.max_hw_srq_quanta = IRDMA_SRQ_MAX_QUANTA;
+	dev->hw_attrs.uk_attrs.max_hw_inline = IG3RDMA_MAX_INLINE_DATA_SIZE;
+	dev->hw_attrs.max_hw_device_pages =
+		dev->is_pf ? IG3RDMA_MAX_PF_PUSH_PAGE_COUNT : IG3RDMA_MAX_VF_PUSH_PAGE_COUNT;
+}
+
+static void __iomem *__ig3rdma_get_reg_addr(struct irdma_mmio_region *region, u64 reg_offset)
+{
+	if (reg_offset >= region->offset &&
+	    reg_offset < (region->offset + region->len)) {
+		reg_offset -= region->offset;
+
+		return region->addr + reg_offset;
+	}
+
+	return NULL;
+}
+
+void __iomem *ig3rdma_get_reg_addr(struct irdma_hw *hw, u64 reg_offset)
+{
+	u8 __iomem *reg_addr;
+	int i;
+
+	reg_addr = __ig3rdma_get_reg_addr(&hw->rdma_reg, reg_offset);
+	if (reg_addr)
+		return reg_addr;
+
+	for (i = 0; i < hw->num_io_regions; i++) {
+		reg_addr = __ig3rdma_get_reg_addr(&hw->io_regs[i], reg_offset);
+		if (reg_addr)
+			return reg_addr;
+	}
+
+	WARN_ON_ONCE(1);
+
+	return NULL;
+}
diff --git a/drivers/infiniband/hw/irdma/ig3rdma_hw.h b/drivers/infiniband/hw/irdma/ig3rdma_hw.h
index 4c3d186..d0793308 100644
--- a/drivers/infiniband/hw/irdma/ig3rdma_hw.h
+++ b/drivers/infiniband/hw/irdma/ig3rdma_hw.h
@@ -3,9 +3,27 @@
 #ifndef IG3RDMA_HW_H
 #define IG3RDMA_HW_H
 
+#define IG3_MAX_APFS 1
+#define IG3_MAX_AVFS 0
+
 #define IG3_PF_RDMA_REGION_OFFSET 0xBC00000
 #define IG3_PF_RDMA_REGION_LEN 0x401000
 #define IG3_VF_RDMA_REGION_OFFSET 0x8C00
 #define IG3_VF_RDMA_REGION_LEN 0x8400
 
+enum ig3rdma_device_caps_const {
+	IG3RDMA_MAX_WQ_FRAGMENT_COUNT		= 14,
+	IG3RDMA_MAX_SGE_RD			= 14,
+
+	IG3RDMA_MAX_STATS_COUNT			= 128,
+
+	IG3RDMA_MAX_IRD_SIZE			= 2048,
+	IG3RDMA_MAX_ORD_SIZE			= 2048,
+	IG3RDMA_MIN_WQ_SIZE			= 16 /* WQEs */,
+	IG3RDMA_MAX_INLINE_DATA_SIZE		= 216,
+	IG3RDMA_MAX_PF_PUSH_PAGE_COUNT		= 8192,
+	IG3RDMA_MAX_VF_PUSH_PAGE_COUNT		= 16,
+};
+
+void __iomem *ig3rdma_get_reg_addr(struct irdma_hw *hw, u64 reg_offset);
 #endif /* IG3RDMA_HW_H*/
diff --git a/drivers/infiniband/hw/irdma/irdma.h b/drivers/infiniband/hw/irdma/irdma.h
index 7691704..4dc6bf5 100644
--- a/drivers/infiniband/hw/irdma/irdma.h
+++ b/drivers/infiniband/hw/irdma/irdma.h
@@ -67,6 +67,7 @@ enum irdma_shifts {
 	IRDMA_CQPSQ_CQ_CEQID_S,
 	IRDMA_CQPSQ_CQ_CQID_S,
 	IRDMA_COMMIT_FPM_CQCNT_S,
+	IRDMA_CQPSQ_UPESD_HMCFNID_S,
 	IRDMA_MAX_SHIFTS,
 };
 
@@ -77,6 +78,7 @@ enum irdma_masks {
 	IRDMA_CQPSQ_CQ_CEQID_M,
 	IRDMA_CQPSQ_CQ_CQID_M,
 	IRDMA_COMMIT_FPM_CQCNT_M,
+	IRDMA_CQPSQ_UPESD_HMCFNID_M,
 	IRDMA_MAX_MASKS, /* Must be last entry */
 };
 
@@ -121,6 +123,7 @@ struct irdma_uk_attrs {
 	u32 max_hw_wq_quanta;
 	u32 min_hw_cq_size;
 	u32 max_hw_cq_size;
+	u32 max_hw_srq_quanta;
 	u16 max_hw_sq_chunk;
 	u16 min_hw_wq_size;
 	u8 hw_rev;
@@ -156,4 +159,6 @@ struct irdma_hw_attrs {
 
 void i40iw_init_hw(struct irdma_sc_dev *dev);
 void icrdma_init_hw(struct irdma_sc_dev *dev);
+void ig3rdma_init_hw(struct irdma_sc_dev *dev);
+void __iomem *ig3rdma_get_reg_addr(struct irdma_hw *hw, u64 reg_offset);
 #endif /* IRDMA_H*/
diff --git a/drivers/infiniband/hw/irdma/virtchnl.c b/drivers/infiniband/hw/irdma/virtchnl.c
index 2abfc39..fcb8ef2 100644
--- a/drivers/infiniband/hw/irdma/virtchnl.c
+++ b/drivers/infiniband/hw/irdma/virtchnl.c
@@ -9,6 +9,51 @@
 #include "ws.h"
 #include "i40iw_hw.h"
 
+struct vchnl_reg_map_elem {
+	u16 reg_id;
+	u16 reg_idx;
+	bool pg_rel;
+};
+
+struct vchnl_regfld_map_elem {
+	u16 regfld_id;
+	u16 regfld_idx;
+};
+
+static struct vchnl_reg_map_elem vchnl_reg_map[] = {
+	{IRDMA_VCHNL_REG_ID_CQPTAIL, IRDMA_CQPTAIL, false},
+	{IRDMA_VCHNL_REG_ID_CQPDB, IRDMA_CQPDB, false},
+	{IRDMA_VCHNL_REG_ID_CCQPSTATUS, IRDMA_CCQPSTATUS, false},
+	{IRDMA_VCHNL_REG_ID_CCQPHIGH, IRDMA_CCQPHIGH, false},
+	{IRDMA_VCHNL_REG_ID_CCQPLOW, IRDMA_CCQPLOW, false},
+	{IRDMA_VCHNL_REG_ID_CQARM, IRDMA_CQARM, false},
+	{IRDMA_VCHNL_REG_ID_CQACK, IRDMA_CQACK, false},
+	{IRDMA_VCHNL_REG_ID_AEQALLOC, IRDMA_AEQALLOC, false},
+	{IRDMA_VCHNL_REG_ID_CQPERRCODES, IRDMA_CQPERRCODES, false},
+	{IRDMA_VCHNL_REG_ID_WQEALLOC, IRDMA_WQEALLOC, false},
+	{IRDMA_VCHNL_REG_ID_DB_ADDR_OFFSET, IRDMA_DB_ADDR_OFFSET, false },
+	{IRDMA_VCHNL_REG_ID_DYN_CTL, IRDMA_GLINT_DYN_CTL, false },
+	{IRDMA_VCHNL_REG_INV_ID, IRDMA_VCHNL_REG_INV_ID, false }
+};
+
+static struct vchnl_regfld_map_elem vchnl_regfld_map[] = {
+	{IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CQP_OP_ERR, IRDMA_CCQPSTATUS_CCQP_ERR_M},
+	{IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CCQP_DONE, IRDMA_CCQPSTATUS_CCQP_DONE_M},
+	{IRDMA_VCHNL_REGFLD_ID_CQPSQ_STAG_PDID, IRDMA_CQPSQ_STAG_PDID_M},
+	{IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CEQID, IRDMA_CQPSQ_CQ_CEQID_M},
+	{IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CQID, IRDMA_CQPSQ_CQ_CQID_M},
+	{IRDMA_VCHNL_REGFLD_ID_COMMIT_FPM_CQCNT, IRDMA_COMMIT_FPM_CQCNT_M},
+	{IRDMA_VCHNL_REGFLD_ID_UPESD_HMCN_ID, IRDMA_CQPSQ_UPESD_HMCFNID_M},
+	{IRDMA_VCHNL_REGFLD_INV_ID, IRDMA_VCHNL_REGFLD_INV_ID}
+};
+
+#define IRDMA_VCHNL_REG_COUNT ARRAY_SIZE(vchnl_reg_map)
+#define IRDMA_VCHNL_REGFLD_COUNT ARRAY_SIZE(vchnl_regfld_map)
+#define IRDMA_VCHNL_REGFLD_BUF_SIZE \
+	(IRDMA_VCHNL_REG_COUNT * sizeof(struct irdma_vchnl_reg_info) + \
+	 IRDMA_VCHNL_REGFLD_COUNT * sizeof(struct irdma_vchnl_reg_field_info))
+#define IRDMA_REGMAP_RESP_BUF_SIZE (IRDMA_VCHNL_RESP_MIN_SIZE + IRDMA_VCHNL_REGFLD_BUF_SIZE)
+
 /**
  * irdma_sc_vchnl_init - Initialize dev virtchannel and get hw_rev
  * @dev: dev structure to update
@@ -62,6 +107,8 @@ static int irdma_vchnl_req_verify_resp(struct irdma_vchnl_req *vchnl_req,
 		if (resp_len < IRDMA_VCHNL_OP_GET_RDMA_CAPS_MIN_SIZE)
 			return -EBADMSG;
 		break;
+	case IRDMA_VCHNL_OP_GET_REG_LAYOUT:
+		break;
 	default:
 		return -EOPNOTSUPP;
 	}
@@ -136,6 +183,137 @@ static int irdma_vchnl_req_send_sync(struct irdma_sc_dev *dev,
 }
 
 /**
+ * irdma_vchnl_req_get_reg_layout - Get Register Layout
+ * @dev: RDMA device pointer
+ */
+int irdma_vchnl_req_get_reg_layout(struct irdma_sc_dev *dev)
+{
+	u16 reg_idx, reg_id, tmp_reg_id, regfld_idx, regfld_id, tmp_regfld_id;
+	struct irdma_vchnl_reg_field_info *regfld_array = NULL;
+	u8 resp_buffer[IRDMA_REGMAP_RESP_BUF_SIZE] = {};
+	struct vchnl_regfld_map_elem *regfld_map_array;
+	struct irdma_vchnl_req_init_info info = {};
+	struct vchnl_reg_map_elem *reg_map_array;
+	struct irdma_vchnl_reg_info *reg_array;
+	u8 num_bits, shift_cnt;
+	u16 buf_len = 0;
+	u64 bitmask;
+	u32 rindex;
+	int ret;
+
+	if (!dev->vchnl_up)
+		return -EBUSY;
+
+	info.op_code = IRDMA_VCHNL_OP_GET_REG_LAYOUT;
+	info.op_ver = IRDMA_VCHNL_OP_GET_REG_LAYOUT_V0;
+	info.resp_parm = resp_buffer;
+	info.resp_parm_len = sizeof(resp_buffer);
+
+	ret = irdma_vchnl_req_send_sync(dev, &info);
+
+	if (ret)
+		return ret;
+
+	/* parse the response buffer and update reg info*/
+	/* Parse registers till invalid */
+	/* Parse register fields till invalid */
+	reg_array = (struct irdma_vchnl_reg_info *)resp_buffer;
+	for (rindex = 0; rindex < IRDMA_VCHNL_REG_COUNT; rindex++) {
+		buf_len += sizeof(struct irdma_vchnl_reg_info);
+		if (buf_len >= sizeof(resp_buffer))
+			return -ENOMEM;
+
+		regfld_array =
+			(struct irdma_vchnl_reg_field_info *)&reg_array[rindex + 1];
+		reg_id = reg_array[rindex].reg_id;
+		if (reg_id == IRDMA_VCHNL_REG_INV_ID)
+			break;
+
+		reg_id &= ~IRDMA_VCHNL_REG_PAGE_REL;
+		if (reg_id >= IRDMA_VCHNL_REG_COUNT)
+			return -EINVAL;
+
+		/* search regmap for register index in hw_regs.*/
+		reg_map_array = vchnl_reg_map;
+		do {
+			tmp_reg_id = reg_map_array->reg_id;
+			if (tmp_reg_id == reg_id)
+				break;
+
+			reg_map_array++;
+		} while (tmp_reg_id != IRDMA_VCHNL_REG_INV_ID);
+		if (tmp_reg_id != reg_id)
+			continue;
+
+		reg_idx = reg_map_array->reg_idx;
+
+		/* Page relative, DB Offset do not need bar offset */
+		if (reg_idx == IRDMA_DB_ADDR_OFFSET ||
+		    (reg_array[rindex].reg_id & IRDMA_VCHNL_REG_PAGE_REL)) {
+			dev->hw_regs[reg_idx] =
+				(u32 __iomem *)(uintptr_t)reg_array[rindex].reg_offset;
+			continue;
+		}
+
+		/* Update the local HW struct */
+		dev->hw_regs[reg_idx] = ig3rdma_get_reg_addr(dev->hw,
+						reg_array[rindex].reg_offset);
+		if (!dev->hw_regs[reg_idx])
+			return -EINVAL;
+	}
+
+	if (!regfld_array)
+		return -ENOMEM;
+
+	/* set up doorbell variables using mapped DB page */
+	dev->wqe_alloc_db = dev->hw_regs[IRDMA_WQEALLOC];
+	dev->cq_arm_db = dev->hw_regs[IRDMA_CQARM];
+	dev->aeq_alloc_db = dev->hw_regs[IRDMA_AEQALLOC];
+	dev->cqp_db = dev->hw_regs[IRDMA_CQPDB];
+	dev->cq_ack_db = dev->hw_regs[IRDMA_CQACK];
+
+	for (rindex = 0; rindex < IRDMA_VCHNL_REGFLD_COUNT; rindex++) {
+		buf_len += sizeof(struct irdma_vchnl_reg_field_info);
+		if ((buf_len - 1) > sizeof(resp_buffer))
+			break;
+
+		if (regfld_array[rindex].fld_id == IRDMA_VCHNL_REGFLD_INV_ID)
+			break;
+
+		regfld_id = regfld_array[rindex].fld_id;
+		regfld_map_array = vchnl_regfld_map;
+		do {
+			tmp_regfld_id = regfld_map_array->regfld_id;
+			if (tmp_regfld_id == regfld_id)
+				break;
+
+			regfld_map_array++;
+		} while (tmp_regfld_id != IRDMA_VCHNL_REGFLD_INV_ID);
+
+		if (tmp_regfld_id != regfld_id)
+			continue;
+
+		regfld_idx = regfld_map_array->regfld_idx;
+
+		num_bits = regfld_array[rindex].fld_bits;
+		shift_cnt = regfld_array[rindex].fld_shift;
+		if ((num_bits + shift_cnt > 64) || !num_bits) {
+			ibdev_dbg(to_ibdev(dev),
+				  "ERR: Invalid field mask id %d bits %d shift %d",
+				  regfld_id, num_bits, shift_cnt);
+
+			continue;
+		}
+
+		bitmask = (1ULL << num_bits) - 1;
+		dev->hw_masks[regfld_idx] = bitmask << shift_cnt;
+		dev->hw_shifts[regfld_idx] = shift_cnt;
+	}
+
+	return 0;
+}
+
+/**
  * irdma_vchnl_req_get_ver - Request Channel version
  * @dev: RDMA device pointer
  * @ver_req: Virtual channel version requested
diff --git a/drivers/infiniband/hw/irdma/virtchnl.h b/drivers/infiniband/hw/irdma/virtchnl.h
index fb28fa0..20526c0 100644
--- a/drivers/infiniband/hw/irdma/virtchnl.h
+++ b/drivers/infiniband/hw/irdma/virtchnl.h
@@ -14,13 +14,44 @@
 #define IRDMA_VCHNL_OP_GET_HMC_FCN_V1 1
 #define IRDMA_VCHNL_OP_GET_HMC_FCN_V2 2
 #define IRDMA_VCHNL_OP_PUT_HMC_FCN_V0 0
+#define IRDMA_VCHNL_OP_GET_REG_LAYOUT_V0 0
 #define IRDMA_VCHNL_OP_GET_RDMA_CAPS_V0 0
 #define IRDMA_VCHNL_OP_GET_RDMA_CAPS_MIN_SIZE 1
 
+#define IRDMA_VCHNL_REG_ID_CQPTAIL 0
+#define IRDMA_VCHNL_REG_ID_CQPDB 1
+#define IRDMA_VCHNL_REG_ID_CCQPSTATUS 2
+#define IRDMA_VCHNL_REG_ID_CCQPHIGH 3
+#define IRDMA_VCHNL_REG_ID_CCQPLOW 4
+#define IRDMA_VCHNL_REG_ID_CQARM 5
+#define IRDMA_VCHNL_REG_ID_CQACK 6
+#define IRDMA_VCHNL_REG_ID_AEQALLOC 7
+#define IRDMA_VCHNL_REG_ID_CQPERRCODES 8
+#define IRDMA_VCHNL_REG_ID_WQEALLOC 9
+#define IRDMA_VCHNL_REG_ID_IPCONFIG0 10
+#define IRDMA_VCHNL_REG_ID_DB_ADDR_OFFSET 11
+#define IRDMA_VCHNL_REG_ID_DYN_CTL 12
+#define IRDMA_VCHNL_REG_ID_AEQITRMASK 13
+#define IRDMA_VCHNL_REG_ID_CEQITRMASK 14
+#define IRDMA_VCHNL_REG_INV_ID 0xFFFF
+#define IRDMA_VCHNL_REG_PAGE_REL 0x8000
+
+#define IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CQP_OP_ERR 2
+#define IRDMA_VCHNL_REGFLD_ID_CCQPSTATUS_CCQP_DONE 5
+#define IRDMA_VCHNL_REGFLD_ID_CQPSQ_STAG_PDID 6
+#define IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CEQID 7
+#define IRDMA_VCHNL_REGFLD_ID_CQPSQ_CQ_CQID 8
+#define IRDMA_VCHNL_REGFLD_ID_COMMIT_FPM_CQCNT 9
+#define IRDMA_VCHNL_REGFLD_ID_UPESD_HMCN_ID 10
+#define IRDMA_VCHNL_REGFLD_INV_ID 0xFFFF
+
+#define IRDMA_VCHNL_RESP_MIN_SIZE (sizeof(struct irdma_vchnl_resp_buf))
+
 enum irdma_vchnl_ops {
 	IRDMA_VCHNL_OP_GET_VER = 0,
 	IRDMA_VCHNL_OP_GET_HMC_FCN = 1,
 	IRDMA_VCHNL_OP_PUT_HMC_FCN = 2,
+	IRDMA_VCHNL_OP_GET_REG_LAYOUT = 11,
 	IRDMA_VCHNL_OP_GET_RDMA_CAPS = 13,
 };
 
@@ -65,6 +96,18 @@ struct irdma_vchnl_init_info {
 	bool is_pf;
 };
 
+struct irdma_vchnl_reg_info {
+	u32 reg_offset;
+	u16 field_cnt;
+	u16 reg_id; /* High bit of reg_id: bar or page relative */
+};
+
+struct irdma_vchnl_reg_field_info {
+	u8 fld_shift;
+	u8 fld_bits;
+	u16 fld_id;
+};
+
 struct irdma_vchnl_req {
 	struct irdma_vchnl_op_buf *vchnl_msg;
 	void *parm;
@@ -93,4 +136,5 @@ int irdma_vchnl_req_get_ver(struct irdma_sc_dev *dev, u16 ver_req,
 int irdma_vchnl_req_get_caps(struct irdma_sc_dev *dev);
 int irdma_vchnl_req_get_resp(struct irdma_sc_dev *dev,
 			     struct irdma_vchnl_req *vc_req);
+int irdma_vchnl_req_get_reg_layout(struct irdma_sc_dev *dev);
 #endif /* IRDMA_VIRTCHNL_H */
