RDMA/ocrdma: Query controller information

Issue mailbox commands to query ocrdma controller information and phy
information and print them while adding ocrdma device.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

8 files changed, 1135 insertions, 2 deletions

diff --git a/drivers/infiniband/hw/ocrdma/Makefile b/drivers/infiniband/hw/ocrdma/Makefile
index 06a5bed12e4..d1bfd4f4cdd 100644
--- a/drivers/infiniband/hw/ocrdma/Makefile
+++ b/drivers/infiniband/hw/ocrdma/Makefile
@@ -2,4 +2,4 @@ ccflags-y := -Idrivers/net/ethernet/emulex/benet
 
 obj-$(CONFIG_INFINIBAND_OCRDMA)	+= ocrdma.o
 
-ocrdma-y :=	ocrdma_main.o ocrdma_verbs.o ocrdma_hw.o ocrdma_ah.o
+ocrdma-y :=	ocrdma_main.o ocrdma_verbs.o ocrdma_hw.o ocrdma_ah.o ocrdma_stats.o
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index 4ea8496c710..3042c87a74b 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -44,10 +44,17 @@
 #define OCRDMA_ROCE_DRV_DESC "Emulex OneConnect RoCE Driver"
 #define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"
 
+#define OC_NAME_SH	OCRDMA_NODE_DESC "(Skyhawk)"
+#define OC_NAME_UNKNOWN OCRDMA_NODE_DESC "(Unknown)"
+
+#define OC_SKH_DEVICE_PF 0x720
+#define OC_SKH_DEVICE_VF 0x728
 #define OCRDMA_MAX_AH 512
 
 #define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
 
+#define convert_to_64bit(lo, hi) ((u64)hi << 32 | (u64)lo)
+
 struct ocrdma_dev_attr {
 	u8 fw_ver[32];
 	u32 vendor_id;
@@ -86,6 +93,12 @@ struct ocrdma_dev_attr {
 	u8 num_ird_pages;
 };
 
+struct ocrdma_dma_mem {
+	void *va;
+	dma_addr_t pa;
+	u32 size;
+};
+
 struct ocrdma_pbl {
 	void *va;
 	dma_addr_t pa;
@@ -151,6 +164,26 @@ struct ocrdma_mr {
 	struct ocrdma_hw_mr hwmr;
 };
 
+struct ocrdma_stats {
+	u8 type;
+	struct ocrdma_dev *dev;
+};
+
+struct stats_mem {
+	struct ocrdma_mqe mqe;
+	void *va;
+	dma_addr_t pa;
+	u32 size;
+	char *debugfs_mem;
+};
+
+struct phy_info {
+	u16 auto_speeds_supported;
+	u16 fixed_speeds_supported;
+	u16 phy_type;
+	u16 interface_type;
+};
+
 struct ocrdma_dev {
 	struct ib_device ibdev;
 	struct ocrdma_dev_attr attr;
@@ -194,6 +227,9 @@ struct ocrdma_dev {
 	struct mqe_ctx mqe_ctx;
 
 	struct be_dev_info nic_info;
+	struct phy_info phy;
+	char model_number[32];
+	u32 hba_port_num;
 
 	struct list_head entry;
 	struct rcu_head rcu;
@@ -201,6 +237,20 @@ struct ocrdma_dev {
 	struct ocrdma_mr *stag_arr[OCRDMA_MAX_STAG];
 	u16 pvid;
 	u32 asic_id;
+
+	ulong last_stats_time;
+	struct mutex stats_lock; /* provide synch for debugfs operations */
+	struct stats_mem stats_mem;
+	struct ocrdma_stats rsrc_stats;
+	struct ocrdma_stats rx_stats;
+	struct ocrdma_stats wqe_stats;
+	struct ocrdma_stats tx_stats;
+	struct ocrdma_stats db_err_stats;
+	struct ocrdma_stats tx_qp_err_stats;
+	struct ocrdma_stats rx_qp_err_stats;
+	struct ocrdma_stats tx_dbg_stats;
+	struct ocrdma_stats rx_dbg_stats;
+	struct dentry *dir;
 };
 
 struct ocrdma_cq {
@@ -434,6 +484,17 @@ static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev,
 	return 0;
 }
 
+static inline char *hca_name(struct ocrdma_dev *dev)
+{
+	switch (dev->nic_info.pdev->device) {
+	case OC_SKH_DEVICE_PF:
+	case OC_SKH_DEVICE_VF:
+		return OC_NAME_SH;
+	default:
+		return OC_NAME_UNKNOWN;
+	}
+}
+
 static inline int ocrdma_get_eq_table_index(struct ocrdma_dev *dev,
 		int eqid)
 {
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index e6797ff4c99..5d3485846d8 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -243,6 +243,23 @@ static int ocrdma_get_mbx_errno(u32 status)
 	return err_num;
 }
 
+char *port_speed_string(struct ocrdma_dev *dev)
+{
+	char *str = "";
+	u16 speeds_supported;
+
+	speeds_supported = dev->phy.fixed_speeds_supported |
+				dev->phy.auto_speeds_supported;
+	if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
+		str = "40Gbps ";
+	else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
+		str = "10Gbps ";
+	else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
+		str = "1Gbps ";
+
+	return str;
+}
+
 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
 {
 	int err_num = -EINVAL;
@@ -332,6 +349,11 @@ static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
 	return mqe;
 }
 
+static void *ocrdma_alloc_mqe(void)
+{
+	return kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
+}
+
 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
 {
 	dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
@@ -1154,6 +1176,96 @@ mbx_err:
 	return status;
 }
 
+int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
+{
+	struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
+	struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
+	struct ocrdma_rdma_stats_resp *old_stats = NULL;
+	int status;
+
+	old_stats = kzalloc(sizeof(*old_stats), GFP_KERNEL);
+	if (old_stats == NULL)
+		return -ENOMEM;
+
+	memset(mqe, 0, sizeof(*mqe));
+	mqe->hdr.pyld_len = dev->stats_mem.size;
+	mqe->hdr.spcl_sge_cnt_emb |=
+			(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
+				OCRDMA_MQE_HDR_SGE_CNT_MASK;
+	mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
+	mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
+	mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
+
+	/* Cache the old stats */
+	memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
+	memset(req, 0, dev->stats_mem.size);
+
+	ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
+			OCRDMA_CMD_GET_RDMA_STATS,
+			OCRDMA_SUBSYS_ROCE,
+			dev->stats_mem.size);
+	if (reset)
+		req->reset_stats = reset;
+
+	status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
+	if (status)
+		/* Copy from cache, if mbox fails */
+		memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
+	else
+		ocrdma_le32_to_cpu(req, dev->stats_mem.size);
+
+	kfree(old_stats);
+	return status;
+}
+
+static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
+{
+	int status = -ENOMEM;
+	struct ocrdma_dma_mem dma;
+	struct ocrdma_mqe *mqe;
+	struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
+	struct mgmt_hba_attribs *hba_attribs;
+
+	mqe = ocrdma_alloc_mqe();
+	if (!mqe)
+		return status;
+	memset(mqe, 0, sizeof(*mqe));
+
+	dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
+	dma.va	 = dma_alloc_coherent(&dev->nic_info.pdev->dev,
+					dma.size, &dma.pa, GFP_KERNEL);
+	if (!dma.va)
+		goto free_mqe;
+
+	mqe->hdr.pyld_len = dma.size;
+	mqe->hdr.spcl_sge_cnt_emb |=
+			(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
+			OCRDMA_MQE_HDR_SGE_CNT_MASK;
+	mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
+	mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
+	mqe->u.nonemb_req.sge[0].len = dma.size;
+
+	memset(dma.va, 0, dma.size);
+	ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
+			OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
+			OCRDMA_SUBSYS_COMMON,
+			dma.size);
+
+	status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
+	if (!status) {
+		ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
+		hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
+
+		dev->hba_port_num = hba_attribs->phy_port;
+		strncpy(dev->model_number,
+			hba_attribs->controller_model_number, 31);
+	}
+	dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
+free_mqe:
+	kfree(mqe);
+	return status;
+}
+
 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
 {
 	int status = -ENOMEM;
@@ -1201,6 +1313,35 @@ mbx_err:
 	return status;
 }
 
+static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
+{
+	int status = -ENOMEM;
+	struct ocrdma_mqe *cmd;
+	struct ocrdma_get_phy_info_rsp *rsp;
+
+	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
+	if (!cmd)
+		return status;
+
+	ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
+			OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
+			sizeof(*cmd));
+
+	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
+	if (status)
+		goto mbx_err;
+
+	rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
+	dev->phy.phy_type = le16_to_cpu(rsp->phy_type);
+	dev->phy.auto_speeds_supported  =
+			le16_to_cpu(rsp->auto_speeds_supported);
+	dev->phy.fixed_speeds_supported =
+			le16_to_cpu(rsp->fixed_speeds_supported);
+mbx_err:
+	kfree(cmd);
+	return status;
+}
+
 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
 {
 	int status = -ENOMEM;
@@ -2570,6 +2711,13 @@ int ocrdma_init_hw(struct ocrdma_dev *dev)
 	status = ocrdma_mbx_create_ah_tbl(dev);
 	if (status)
 		goto conf_err;
+	status = ocrdma_mbx_get_phy_info(dev);
+	if (status)
+		goto conf_err;
+	status = ocrdma_mbx_get_ctrl_attribs(dev);
+	if (status)
+		goto conf_err;
+
 	return 0;
 
 conf_err:
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.h b/drivers/infiniband/hw/ocrdma/ocrdma_hw.h
index 77da536d5d9..e513f729314 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.h
@@ -133,4 +133,6 @@ bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *, struct ocrdma_qp *);
 void ocrdma_flush_qp(struct ocrdma_qp *);
 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq);
 
+int ocrdma_mbx_rdma_stats(struct ocrdma_dev *, bool reset);
+char *port_speed_string(struct ocrdma_dev *dev);
 #endif				/* __OCRDMA_HW_H__ */
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
index ae17a3670bc..7d18b3ad21e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c
@@ -39,6 +39,7 @@
 #include "ocrdma_ah.h"
 #include "be_roce.h"
 #include "ocrdma_hw.h"
+#include "ocrdma_stats.h"
 #include "ocrdma_abi.h"
 
 MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION);
@@ -372,6 +373,15 @@ static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
 	spin_lock(&ocrdma_devlist_lock);
 	list_add_tail_rcu(&dev->entry, &ocrdma_dev_list);
 	spin_unlock(&ocrdma_devlist_lock);
+	/* Init stats */
+	ocrdma_add_port_stats(dev);
+
+	pr_info("%s %s: %s \"%s\" port %d\n",
+		dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
+		port_speed_string(dev), dev->model_number,
+		dev->hba_port_num);
+	pr_info("%s ocrdma%d driver loaded successfully\n",
+		dev_name(&dev->nic_info.pdev->dev), dev->id);
 	return dev;
 
 alloc_err:
@@ -400,6 +410,7 @@ static void ocrdma_remove(struct ocrdma_dev *dev)
 	/* first unregister with stack to stop all the active traffic
 	 * of the registered clients.
 	 */
+	ocrdma_rem_port_stats(dev);
 	ib_unregister_device(&dev->ibdev);
 
 	spin_lock(&ocrdma_devlist_lock);
@@ -492,6 +503,8 @@ static int __init ocrdma_init_module(void)
 {
 	int status;
 
+	ocrdma_init_debugfs();
+
 	status = register_inetaddr_notifier(&ocrdma_inetaddr_notifier);
 	if (status)
 		return status;
@@ -513,6 +526,7 @@ static void __exit ocrdma_exit_module(void)
 {
 	be_roce_unregister_driver(&ocrdma_drv);
 	ocrdma_unregister_inet6addr_notifier();
+	ocrdma_rem_debugfs();
 }
 
 module_init(ocrdma_init_module);
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
index de4ebfc4e0e..6e048b7283c 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
@@ -72,6 +72,7 @@ enum {
 
 	OCRDMA_CMD_ATTACH_MCAST,
 	OCRDMA_CMD_DETACH_MCAST,
+	OCRDMA_CMD_GET_RDMA_STATS,
 
 	OCRDMA_CMD_MAX
 };
@@ -82,12 +83,14 @@ enum {
 	OCRDMA_CMD_CREATE_CQ		= 12,
 	OCRDMA_CMD_CREATE_EQ		= 13,
 	OCRDMA_CMD_CREATE_MQ		= 21,
+	OCRDMA_CMD_GET_CTRL_ATTRIBUTES  = 32,
 	OCRDMA_CMD_GET_FW_VER		= 35,
 	OCRDMA_CMD_DELETE_MQ		= 53,
 	OCRDMA_CMD_DELETE_CQ		= 54,
 	OCRDMA_CMD_DELETE_EQ		= 55,
 	OCRDMA_CMD_GET_FW_CONFIG	= 58,
-	OCRDMA_CMD_CREATE_MQ_EXT	= 90
+	OCRDMA_CMD_CREATE_MQ_EXT	= 90,
+	OCRDMA_CMD_PHY_DETAILS		= 102
 };
 
 enum {
@@ -578,6 +581,30 @@ enum {
 	OCRDMA_FN_MODE_RDMA	= 0x4
 };
 
+struct ocrdma_get_phy_info_rsp {
+	struct ocrdma_mqe_hdr hdr;
+	struct ocrdma_mbx_rsp rsp;
+
+	u16 phy_type;
+	u16 interface_type;
+	u32 misc_params;
+	u16 ext_phy_details;
+	u16 rsvd;
+	u16 auto_speeds_supported;
+	u16 fixed_speeds_supported;
+	u32 future_use[2];
+};
+
+enum {
+	OCRDMA_PHY_SPEED_ZERO = 0x0,
+	OCRDMA_PHY_SPEED_10MBPS = 0x1,
+	OCRDMA_PHY_SPEED_100MBPS = 0x2,
+	OCRDMA_PHY_SPEED_1GBPS = 0x4,
+	OCRDMA_PHY_SPEED_10GBPS = 0x8,
+	OCRDMA_PHY_SPEED_40GBPS = 0x20
+};
+
+
 struct ocrdma_get_link_speed_rsp {
 	struct ocrdma_mqe_hdr hdr;
 	struct ocrdma_mbx_rsp rsp;
@@ -1719,4 +1746,208 @@ struct ocrdma_av {
 	u32 valid;
 } __packed;
 
+struct ocrdma_rsrc_stats {
+	u32 dpp_pds;
+	u32 non_dpp_pds;
+	u32 rc_dpp_qps;
+	u32 uc_dpp_qps;
+	u32 ud_dpp_qps;
+	u32 rc_non_dpp_qps;
+	u32 rsvd;
+	u32 uc_non_dpp_qps;
+	u32 ud_non_dpp_qps;
+	u32 rsvd1;
+	u32 srqs;
+	u32 rbqs;
+	u32 r64K_nsmr;
+	u32 r64K_to_2M_nsmr;
+	u32 r2M_to_44M_nsmr;
+	u32 r44M_to_1G_nsmr;
+	u32 r1G_to_4G_nsmr;
+	u32 nsmr_count_4G_to_32G;
+	u32 r32G_to_64G_nsmr;
+	u32 r64G_to_128G_nsmr;
+	u32 r128G_to_higher_nsmr;
+	u32 embedded_nsmr;
+	u32 frmr;
+	u32 prefetch_qps;
+	u32 ondemand_qps;
+	u32 phy_mr;
+	u32 mw;
+	u32 rsvd2[7];
+};
+
+struct ocrdma_db_err_stats {
+	u32 sq_doorbell_errors;
+	u32 cq_doorbell_errors;
+	u32 rq_srq_doorbell_errors;
+	u32 cq_overflow_errors;
+	u32 rsvd[4];
+};
+
+struct ocrdma_wqe_stats {
+	u32 large_send_rc_wqes_lo;
+	u32 large_send_rc_wqes_hi;
+	u32 large_write_rc_wqes_lo;
+	u32 large_write_rc_wqes_hi;
+	u32 rsvd[4];
+	u32 read_wqes_lo;
+	u32 read_wqes_hi;
+	u32 frmr_wqes_lo;
+	u32 frmr_wqes_hi;
+	u32 mw_bind_wqes_lo;
+	u32 mw_bind_wqes_hi;
+	u32 invalidate_wqes_lo;
+	u32 invalidate_wqes_hi;
+	u32 rsvd1[2];
+	u32 dpp_wqe_drops;
+	u32 rsvd2[5];
+};
+
+struct ocrdma_tx_stats {
+	u32 send_pkts_lo;
+	u32 send_pkts_hi;
+	u32 write_pkts_lo;
+	u32 write_pkts_hi;
+	u32 read_pkts_lo;
+	u32 read_pkts_hi;
+	u32 read_rsp_pkts_lo;
+	u32 read_rsp_pkts_hi;
+	u32 ack_pkts_lo;
+	u32 ack_pkts_hi;
+	u32 send_bytes_lo;
+	u32 send_bytes_hi;
+	u32 write_bytes_lo;
+	u32 write_bytes_hi;
+	u32 read_req_bytes_lo;
+	u32 read_req_bytes_hi;
+	u32 read_rsp_bytes_lo;
+	u32 read_rsp_bytes_hi;
+	u32 ack_timeouts;
+	u32 rsvd[5];
+};
+
+
+struct ocrdma_tx_qp_err_stats {
+	u32 local_length_errors;
+	u32 local_protection_errors;
+	u32 local_qp_operation_errors;
+	u32 retry_count_exceeded_errors;
+	u32 rnr_retry_count_exceeded_errors;
+	u32 rsvd[3];
+};
+
+struct ocrdma_rx_stats {
+	u32 roce_frame_bytes_lo;
+	u32 roce_frame_bytes_hi;
+	u32 roce_frame_icrc_drops;
+	u32 roce_frame_payload_len_drops;
+	u32 ud_drops;
+	u32 qp1_drops;
+	u32 psn_error_request_packets;
+	u32 psn_error_resp_packets;
+	u32 rnr_nak_timeouts;
+	u32 rnr_nak_receives;
+	u32 roce_frame_rxmt_drops;
+	u32 nak_count_psn_sequence_errors;
+	u32 rc_drop_count_lookup_errors;
+	u32 rq_rnr_naks;
+	u32 srq_rnr_naks;
+	u32 roce_frames_lo;
+	u32 roce_frames_hi;
+	u32 rsvd;
+};
+
+struct ocrdma_rx_qp_err_stats {
+	u32 nak_invalid_requst_errors;
+	u32 nak_remote_operation_errors;
+	u32 nak_count_remote_access_errors;
+	u32 local_length_errors;
+	u32 local_protection_errors;
+	u32 local_qp_operation_errors;
+	u32 rsvd[2];
+};
+
+struct ocrdma_tx_dbg_stats {
+	u32 data[100];
+};
+
+struct ocrdma_rx_dbg_stats {
+	u32 data[200];
+};
+
+struct ocrdma_rdma_stats_req {
+	struct ocrdma_mbx_hdr hdr;
+	u8 reset_stats;
+	u8 rsvd[3];
+} __packed;
+
+struct ocrdma_rdma_stats_resp {
+	struct ocrdma_mbx_hdr hdr;
+	struct ocrdma_rsrc_stats act_rsrc_stats;
+	struct ocrdma_rsrc_stats th_rsrc_stats;
+	struct ocrdma_db_err_stats	db_err_stats;
+	struct ocrdma_wqe_stats		wqe_stats;
+	struct ocrdma_tx_stats		tx_stats;
+	struct ocrdma_tx_qp_err_stats	tx_qp_err_stats;
+	struct ocrdma_rx_stats		rx_stats;
+	struct ocrdma_rx_qp_err_stats	rx_qp_err_stats;
+	struct ocrdma_tx_dbg_stats	tx_dbg_stats;
+	struct ocrdma_rx_dbg_stats	rx_dbg_stats;
+} __packed;
+
+
+struct mgmt_hba_attribs {
+	u8 flashrom_version_string[32];
+	u8 manufacturer_name[32];
+	u32 supported_modes;
+	u32 rsvd0[3];
+	u8 ncsi_ver_string[12];
+	u32 default_extended_timeout;
+	u8 controller_model_number[32];
+	u8 controller_description[64];
+	u8 controller_serial_number[32];
+	u8 ip_version_string[32];
+	u8 firmware_version_string[32];
+	u8 bios_version_string[32];
+	u8 redboot_version_string[32];
+	u8 driver_version_string[32];
+	u8 fw_on_flash_version_string[32];
+	u32 functionalities_supported;
+	u16 max_cdblength;
+	u8 asic_revision;
+	u8 generational_guid[16];
+	u8 hba_port_count;
+	u16 default_link_down_timeout;
+	u8 iscsi_ver_min_max;
+	u8 multifunction_device;
+	u8 cache_valid;
+	u8 hba_status;
+	u8 max_domains_supported;
+	u8 phy_port;
+	u32 firmware_post_status;
+	u32 hba_mtu[8];
+	u32 rsvd1[4];
+};
+
+struct mgmt_controller_attrib {
+	struct mgmt_hba_attribs hba_attribs;
+	u16 pci_vendor_id;
+	u16 pci_device_id;
+	u16 pci_sub_vendor_id;
+	u16 pci_sub_system_id;
+	u8 pci_bus_number;
+	u8 pci_device_number;
+	u8 pci_function_number;
+	u8 interface_type;
+	u64 unique_identifier;
+	u32 rsvd0[5];
+};
+
+struct ocrdma_get_ctrl_attribs_rsp {
+	struct ocrdma_mbx_hdr hdr;
+	struct mgmt_controller_attrib ctrl_attribs;
+};
+
+
 #endif				/* __OCRDMA_SLI_H__ */
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.c b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
new file mode 100644
index 00000000000..6c54106f5e6
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.c
@@ -0,0 +1,623 @@
+/*******************************************************************
+ * This file is part of the Emulex RoCE Device Driver for          *
+ * RoCE (RDMA over Converged Ethernet) adapters.                   *
+ * Copyright (C) 2008-2014 Emulex. All rights reserved.            *
+ * EMULEX and SLI are trademarks of Emulex.                        *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * This program is free software; you can redistribute it and/or   *
+ * modify it under the terms of version 2 of the GNU General       *
+ * Public License as published by the Free Software Foundation.    *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
+ * more details, a copy of which can be found in the file COPYING  *
+ * included with this package.                                     *
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ *******************************************************************/
+
+#include <rdma/ib_addr.h>
+#include "ocrdma_stats.h"
+
+static struct dentry *ocrdma_dbgfs_dir;
+
+static int ocrdma_add_stat(char *start, char *pcur,
+				char *name, u64 count)
+{
+	char buff[128] = {0};
+	int cpy_len = 0;
+
+	snprintf(buff, 128, "%s: %llu\n", name, count);
+	cpy_len = strlen(buff);
+
+	if (pcur + cpy_len > start + OCRDMA_MAX_DBGFS_MEM) {
+		pr_err("%s: No space in stats buff\n", __func__);
+		return 0;
+	}
+
+	memcpy(pcur, buff, cpy_len);
+	return cpy_len;
+}
+
+static bool ocrdma_alloc_stats_mem(struct ocrdma_dev *dev)
+{
+	struct stats_mem *mem = &dev->stats_mem;
+
+	/* Alloc mbox command mem*/
+	mem->size = max_t(u32, sizeof(struct ocrdma_rdma_stats_req),
+			sizeof(struct ocrdma_rdma_stats_resp));
+
+	mem->va   = dma_alloc_coherent(&dev->nic_info.pdev->dev, mem->size,
+					 &mem->pa, GFP_KERNEL);
+	if (!mem->va) {
+		pr_err("%s: stats mbox allocation failed\n", __func__);
+		return false;
+	}
+
+	memset(mem->va, 0, mem->size);
+
+	/* Alloc debugfs mem */
+	mem->debugfs_mem = kzalloc(OCRDMA_MAX_DBGFS_MEM, GFP_KERNEL);
+	if (!mem->debugfs_mem) {
+		pr_err("%s: stats debugfs mem allocation failed\n", __func__);
+		return false;
+	}
+
+	return true;
+}
+
+static void ocrdma_release_stats_mem(struct ocrdma_dev *dev)
+{
+	struct stats_mem *mem = &dev->stats_mem;
+
+	if (mem->va)
+		dma_free_coherent(&dev->nic_info.pdev->dev, mem->size,
+				  mem->va, mem->pa);
+	kfree(mem->debugfs_mem);
+}
+
+static char *ocrdma_resource_stats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+			(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_rsrc_stats *rsrc_stats = &rdma_stats->act_rsrc_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "active_dpp_pds",
+				(u64)rsrc_stats->dpp_pds);
+	pcur += ocrdma_add_stat(stats, pcur, "active_non_dpp_pds",
+				(u64)rsrc_stats->non_dpp_pds);
+	pcur += ocrdma_add_stat(stats, pcur, "active_rc_dpp_qps",
+				(u64)rsrc_stats->rc_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_uc_dpp_qps",
+				(u64)rsrc_stats->uc_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_ud_dpp_qps",
+				(u64)rsrc_stats->ud_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_rc_non_dpp_qps",
+				(u64)rsrc_stats->rc_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_uc_non_dpp_qps",
+				(u64)rsrc_stats->uc_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_ud_non_dpp_qps",
+				(u64)rsrc_stats->ud_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_srqs",
+				(u64)rsrc_stats->srqs);
+	pcur += ocrdma_add_stat(stats, pcur, "active_rbqs",
+				(u64)rsrc_stats->rbqs);
+	pcur += ocrdma_add_stat(stats, pcur, "active_64K_nsmr",
+				(u64)rsrc_stats->r64K_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_64K_to_2M_nsmr",
+				(u64)rsrc_stats->r64K_to_2M_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_2M_to_44M_nsmr",
+				(u64)rsrc_stats->r2M_to_44M_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_44M_to_1G_nsmr",
+				(u64)rsrc_stats->r44M_to_1G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_1G_to_4G_nsmr",
+				(u64)rsrc_stats->r1G_to_4G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_nsmr_count_4G_to_32G",
+				(u64)rsrc_stats->nsmr_count_4G_to_32G);
+	pcur += ocrdma_add_stat(stats, pcur, "active_32G_to_64G_nsmr",
+				(u64)rsrc_stats->r32G_to_64G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_64G_to_128G_nsmr",
+				(u64)rsrc_stats->r64G_to_128G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_128G_to_higher_nsmr",
+				(u64)rsrc_stats->r128G_to_higher_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_embedded_nsmr",
+				(u64)rsrc_stats->embedded_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_frmr",
+				(u64)rsrc_stats->frmr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_prefetch_qps",
+				(u64)rsrc_stats->prefetch_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_ondemand_qps",
+				(u64)rsrc_stats->ondemand_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "active_phy_mr",
+				(u64)rsrc_stats->phy_mr);
+	pcur += ocrdma_add_stat(stats, pcur, "active_mw",
+				(u64)rsrc_stats->mw);
+
+	/* Print the threshold stats */
+	rsrc_stats = &rdma_stats->th_rsrc_stats;
+
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_dpp_pds",
+				(u64)rsrc_stats->dpp_pds);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_non_dpp_pds",
+				(u64)rsrc_stats->non_dpp_pds);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_rc_dpp_qps",
+				(u64)rsrc_stats->rc_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_uc_dpp_qps",
+				(u64)rsrc_stats->uc_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_ud_dpp_qps",
+				(u64)rsrc_stats->ud_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_rc_non_dpp_qps",
+				(u64)rsrc_stats->rc_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_uc_non_dpp_qps",
+				(u64)rsrc_stats->uc_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_ud_non_dpp_qps",
+				(u64)rsrc_stats->ud_non_dpp_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_srqs",
+				(u64)rsrc_stats->srqs);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_rbqs",
+				(u64)rsrc_stats->rbqs);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_64K_nsmr",
+				(u64)rsrc_stats->r64K_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_64K_to_2M_nsmr",
+				(u64)rsrc_stats->r64K_to_2M_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_2M_to_44M_nsmr",
+				(u64)rsrc_stats->r2M_to_44M_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_44M_to_1G_nsmr",
+				(u64)rsrc_stats->r44M_to_1G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_1G_to_4G_nsmr",
+				(u64)rsrc_stats->r1G_to_4G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_nsmr_count_4G_to_32G",
+				(u64)rsrc_stats->nsmr_count_4G_to_32G);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_32G_to_64G_nsmr",
+				(u64)rsrc_stats->r32G_to_64G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_64G_to_128G_nsmr",
+				(u64)rsrc_stats->r64G_to_128G_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_128G_to_higher_nsmr",
+				(u64)rsrc_stats->r128G_to_higher_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_embedded_nsmr",
+				(u64)rsrc_stats->embedded_nsmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_frmr",
+				(u64)rsrc_stats->frmr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_prefetch_qps",
+				(u64)rsrc_stats->prefetch_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_ondemand_qps",
+				(u64)rsrc_stats->ondemand_qps);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_phy_mr",
+				(u64)rsrc_stats->phy_mr);
+	pcur += ocrdma_add_stat(stats, pcur, "threshold_mw",
+				(u64)rsrc_stats->mw);
+	return stats;
+}
+
+static char *ocrdma_rx_stats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_rx_stats *rx_stats = &rdma_stats->rx_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat
+		(stats, pcur, "roce_frame_bytes",
+		 convert_to_64bit(rx_stats->roce_frame_bytes_lo,
+		 rx_stats->roce_frame_bytes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_icrc_drops",
+				(u64)rx_stats->roce_frame_icrc_drops);
+	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_payload_len_drops",
+				(u64)rx_stats->roce_frame_payload_len_drops);
+	pcur += ocrdma_add_stat(stats, pcur, "ud_drops",
+				(u64)rx_stats->ud_drops);
+	pcur += ocrdma_add_stat(stats, pcur, "qp1_drops",
+				(u64)rx_stats->qp1_drops);
+	pcur += ocrdma_add_stat(stats, pcur, "psn_error_request_packets",
+				(u64)rx_stats->psn_error_request_packets);
+	pcur += ocrdma_add_stat(stats, pcur, "psn_error_resp_packets",
+				(u64)rx_stats->psn_error_resp_packets);
+	pcur += ocrdma_add_stat(stats, pcur, "rnr_nak_timeouts",
+				(u64)rx_stats->rnr_nak_timeouts);
+	pcur += ocrdma_add_stat(stats, pcur, "rnr_nak_receives",
+				(u64)rx_stats->rnr_nak_receives);
+	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_rxmt_drops",
+				(u64)rx_stats->roce_frame_rxmt_drops);
+	pcur += ocrdma_add_stat(stats, pcur, "nak_count_psn_sequence_errors",
+				(u64)rx_stats->nak_count_psn_sequence_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "rc_drop_count_lookup_errors",
+				(u64)rx_stats->rc_drop_count_lookup_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "rq_rnr_naks",
+				(u64)rx_stats->rq_rnr_naks);
+	pcur += ocrdma_add_stat(stats, pcur, "srq_rnr_naks",
+				(u64)rx_stats->srq_rnr_naks);
+	pcur += ocrdma_add_stat(stats, pcur, "roce_frames",
+				convert_to_64bit(rx_stats->roce_frames_lo,
+						 rx_stats->roce_frames_hi));
+
+	return stats;
+}
+
+static char *ocrdma_tx_stats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_tx_stats *tx_stats = &rdma_stats->tx_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "send_pkts",
+				convert_to_64bit(tx_stats->send_pkts_lo,
+						 tx_stats->send_pkts_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "write_pkts",
+				convert_to_64bit(tx_stats->write_pkts_lo,
+						 tx_stats->write_pkts_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "read_pkts",
+				convert_to_64bit(tx_stats->read_pkts_lo,
+						 tx_stats->read_pkts_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "read_rsp_pkts",
+				convert_to_64bit(tx_stats->read_rsp_pkts_lo,
+						 tx_stats->read_rsp_pkts_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "ack_pkts",
+				convert_to_64bit(tx_stats->ack_pkts_lo,
+						 tx_stats->ack_pkts_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "send_bytes",
+				convert_to_64bit(tx_stats->send_bytes_lo,
+						 tx_stats->send_bytes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "write_bytes",
+				convert_to_64bit(tx_stats->write_bytes_lo,
+						 tx_stats->write_bytes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "read_req_bytes",
+				convert_to_64bit(tx_stats->read_req_bytes_lo,
+						 tx_stats->read_req_bytes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "read_rsp_bytes",
+				convert_to_64bit(tx_stats->read_rsp_bytes_lo,
+						 tx_stats->read_rsp_bytes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "ack_timeouts",
+				(u64)tx_stats->ack_timeouts);
+
+	return stats;
+}
+
+static char *ocrdma_wqe_stats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_wqe_stats	*wqe_stats = &rdma_stats->wqe_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "large_send_rc_wqes",
+		convert_to_64bit(wqe_stats->large_send_rc_wqes_lo,
+				 wqe_stats->large_send_rc_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "large_write_rc_wqes",
+		convert_to_64bit(wqe_stats->large_write_rc_wqes_lo,
+				 wqe_stats->large_write_rc_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "read_wqes",
+				convert_to_64bit(wqe_stats->read_wqes_lo,
+						 wqe_stats->read_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "frmr_wqes",
+				convert_to_64bit(wqe_stats->frmr_wqes_lo,
+						 wqe_stats->frmr_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "mw_bind_wqes",
+				convert_to_64bit(wqe_stats->mw_bind_wqes_lo,
+						 wqe_stats->mw_bind_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "invalidate_wqes",
+		convert_to_64bit(wqe_stats->invalidate_wqes_lo,
+				 wqe_stats->invalidate_wqes_hi));
+	pcur += ocrdma_add_stat(stats, pcur, "dpp_wqe_drops",
+				(u64)wqe_stats->dpp_wqe_drops);
+	return stats;
+}
+
+static char *ocrdma_db_errstats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_db_err_stats *db_err_stats = &rdma_stats->db_err_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "sq_doorbell_errors",
+				(u64)db_err_stats->sq_doorbell_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "cq_doorbell_errors",
+				(u64)db_err_stats->cq_doorbell_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "rq_srq_doorbell_errors",
+				(u64)db_err_stats->rq_srq_doorbell_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "cq_overflow_errors",
+				(u64)db_err_stats->cq_overflow_errors);
+	return stats;
+}
+
+static char *ocrdma_rxqp_errstats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_rx_qp_err_stats *rx_qp_err_stats =
+		 &rdma_stats->rx_qp_err_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "nak_invalid_requst_errors",
+			(u64)rx_qp_err_stats->nak_invalid_requst_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "nak_remote_operation_errors",
+			(u64)rx_qp_err_stats->nak_remote_operation_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "nak_count_remote_access_errors",
+			(u64)rx_qp_err_stats->nak_count_remote_access_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "local_length_errors",
+			(u64)rx_qp_err_stats->local_length_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "local_protection_errors",
+			(u64)rx_qp_err_stats->local_protection_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "local_qp_operation_errors",
+			(u64)rx_qp_err_stats->local_qp_operation_errors);
+	return stats;
+}
+
+static char *ocrdma_txqp_errstats(struct ocrdma_dev *dev)
+{
+	char *stats = dev->stats_mem.debugfs_mem, *pcur;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_tx_qp_err_stats *tx_qp_err_stats =
+		&rdma_stats->tx_qp_err_stats;
+
+	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	pcur = stats;
+	pcur += ocrdma_add_stat(stats, pcur, "local_length_errors",
+			(u64)tx_qp_err_stats->local_length_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "local_protection_errors",
+			(u64)tx_qp_err_stats->local_protection_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "local_qp_operation_errors",
+			(u64)tx_qp_err_stats->local_qp_operation_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "retry_count_exceeded_errors",
+			(u64)tx_qp_err_stats->retry_count_exceeded_errors);
+	pcur += ocrdma_add_stat(stats, pcur, "rnr_retry_count_exceeded_errors",
+			(u64)tx_qp_err_stats->rnr_retry_count_exceeded_errors);
+	return stats;
+}
+
+static char *ocrdma_tx_dbg_stats(struct ocrdma_dev *dev)
+{
+	int i;
+	char *pstats = dev->stats_mem.debugfs_mem;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_tx_dbg_stats *tx_dbg_stats =
+		&rdma_stats->tx_dbg_stats;
+
+	memset(pstats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	for (i = 0; i < 100; i++)
+		pstats += snprintf(pstats, 80, "DW[%d] = 0x%x\n", i,
+				 tx_dbg_stats->data[i]);
+
+	return dev->stats_mem.debugfs_mem;
+}
+
+static char *ocrdma_rx_dbg_stats(struct ocrdma_dev *dev)
+{
+	int i;
+	char *pstats = dev->stats_mem.debugfs_mem;
+	struct ocrdma_rdma_stats_resp *rdma_stats =
+		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
+	struct ocrdma_rx_dbg_stats *rx_dbg_stats =
+		&rdma_stats->rx_dbg_stats;
+
+	memset(pstats, 0, (OCRDMA_MAX_DBGFS_MEM));
+
+	for (i = 0; i < 200; i++)
+		pstats += snprintf(pstats, 80, "DW[%d] = 0x%x\n", i,
+				 rx_dbg_stats->data[i]);
+
+	return dev->stats_mem.debugfs_mem;
+}
+
+static void ocrdma_update_stats(struct ocrdma_dev *dev)
+{
+	ulong now = jiffies, secs;
+	int status = 0;
+
+	secs = jiffies_to_msecs(now - dev->last_stats_time) / 1000U;
+	if (secs) {
+		/* update */
+		status = ocrdma_mbx_rdma_stats(dev, false);
+		if (status)
+			pr_err("%s: stats mbox failed with status = %d\n",
+			       __func__, status);
+		dev->last_stats_time = jiffies;
+	}
+}
+
+static ssize_t ocrdma_dbgfs_ops_read(struct file *filp, char __user *buffer,
+					size_t usr_buf_len, loff_t *ppos)
+{
+	struct ocrdma_stats *pstats = filp->private_data;
+	struct ocrdma_dev *dev = pstats->dev;
+	ssize_t status = 0;
+	char *data = NULL;
+
+	/* No partial reads */
+	if (*ppos != 0)
+		return 0;
+
+	mutex_lock(&dev->stats_lock);
+
+	ocrdma_update_stats(dev);
+
+	switch (pstats->type) {
+	case OCRDMA_RSRC_STATS:
+		data = ocrdma_resource_stats(dev);
+		break;
+	case OCRDMA_RXSTATS:
+		data = ocrdma_rx_stats(dev);
+		break;
+	case OCRDMA_WQESTATS:
+		data = ocrdma_wqe_stats(dev);
+		break;
+	case OCRDMA_TXSTATS:
+		data = ocrdma_tx_stats(dev);
+		break;
+	case OCRDMA_DB_ERRSTATS:
+		data = ocrdma_db_errstats(dev);
+		break;
+	case OCRDMA_RXQP_ERRSTATS:
+		data = ocrdma_rxqp_errstats(dev);
+		break;
+	case OCRDMA_TXQP_ERRSTATS:
+		data = ocrdma_txqp_errstats(dev);
+		break;
+	case OCRDMA_TX_DBG_STATS:
+		data = ocrdma_tx_dbg_stats(dev);
+		break;
+	case OCRDMA_RX_DBG_STATS:
+		data = ocrdma_rx_dbg_stats(dev);
+		break;
+
+	default:
+		status = -EFAULT;
+		goto exit;
+	}
+
+	if (usr_buf_len < strlen(data)) {
+		status = -ENOSPC;
+		goto exit;
+	}
+
+	status = simple_read_from_buffer(buffer, usr_buf_len, ppos, data,
+					 strlen(data));
+exit:
+	mutex_unlock(&dev->stats_lock);
+	return status;
+}
+
+static int ocrdma_debugfs_open(struct inode *inode, struct file *file)
+{
+	if (inode->i_private)
+		file->private_data = inode->i_private;
+	return 0;
+}
+
+static const struct file_operations ocrdma_dbg_ops = {
+	.owner = THIS_MODULE,
+	.open = ocrdma_debugfs_open,
+	.read = ocrdma_dbgfs_ops_read,
+};
+
+void ocrdma_add_port_stats(struct ocrdma_dev *dev)
+{
+	if (!ocrdma_dbgfs_dir)
+		return;
+
+	/* Create post stats base dir */
+	dev->dir = debugfs_create_dir(dev->ibdev.name, ocrdma_dbgfs_dir);
+	if (!dev->dir)
+		goto err;
+
+	dev->rsrc_stats.type = OCRDMA_RSRC_STATS;
+	dev->rsrc_stats.dev = dev;
+	if (!debugfs_create_file("resource_stats", S_IRUSR, dev->dir,
+				 &dev->rsrc_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->rx_stats.type = OCRDMA_RXSTATS;
+	dev->rx_stats.dev = dev;
+	if (!debugfs_create_file("rx_stats", S_IRUSR, dev->dir,
+				 &dev->rx_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->wqe_stats.type = OCRDMA_WQESTATS;
+	dev->wqe_stats.dev = dev;
+	if (!debugfs_create_file("wqe_stats", S_IRUSR, dev->dir,
+				 &dev->wqe_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->tx_stats.type = OCRDMA_TXSTATS;
+	dev->tx_stats.dev = dev;
+	if (!debugfs_create_file("tx_stats", S_IRUSR, dev->dir,
+				 &dev->tx_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->db_err_stats.type = OCRDMA_DB_ERRSTATS;
+	dev->db_err_stats.dev = dev;
+	if (!debugfs_create_file("db_err_stats", S_IRUSR, dev->dir,
+				 &dev->db_err_stats, &ocrdma_dbg_ops))
+		goto err;
+
+
+	dev->tx_qp_err_stats.type = OCRDMA_TXQP_ERRSTATS;
+	dev->tx_qp_err_stats.dev = dev;
+	if (!debugfs_create_file("tx_qp_err_stats", S_IRUSR, dev->dir,
+				 &dev->tx_qp_err_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->rx_qp_err_stats.type = OCRDMA_RXQP_ERRSTATS;
+	dev->rx_qp_err_stats.dev = dev;
+	if (!debugfs_create_file("rx_qp_err_stats", S_IRUSR, dev->dir,
+				 &dev->rx_qp_err_stats, &ocrdma_dbg_ops))
+		goto err;
+
+
+	dev->tx_dbg_stats.type = OCRDMA_TX_DBG_STATS;
+	dev->tx_dbg_stats.dev = dev;
+	if (!debugfs_create_file("tx_dbg_stats", S_IRUSR, dev->dir,
+				 &dev->tx_dbg_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	dev->rx_dbg_stats.type = OCRDMA_RX_DBG_STATS;
+	dev->rx_dbg_stats.dev = dev;
+	if (!debugfs_create_file("rx_dbg_stats", S_IRUSR, dev->dir,
+				 &dev->rx_dbg_stats, &ocrdma_dbg_ops))
+		goto err;
+
+	/* Now create dma_mem for stats mbx command */
+	if (!ocrdma_alloc_stats_mem(dev))
+		goto err;
+
+	mutex_init(&dev->stats_lock);
+
+	return;
+err:
+	ocrdma_release_stats_mem(dev);
+	debugfs_remove_recursive(dev->dir);
+	dev->dir = NULL;
+}
+
+void ocrdma_rem_port_stats(struct ocrdma_dev *dev)
+{
+	if (!dev->dir)
+		return;
+	mutex_destroy(&dev->stats_lock);
+	ocrdma_release_stats_mem(dev);
+	debugfs_remove(dev->dir);
+}
+
+void ocrdma_init_debugfs(void)
+{
+	/* Create base dir in debugfs root dir */
+	ocrdma_dbgfs_dir = debugfs_create_dir("ocrdma", NULL);
+}
+
+void ocrdma_rem_debugfs(void)
+{
+	debugfs_remove_recursive(ocrdma_dbgfs_dir);
+}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_stats.h b/drivers/infiniband/hw/ocrdma/ocrdma_stats.h
new file mode 100644
index 00000000000..5f5e20c46d7
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_stats.h
@@ -0,0 +1,54 @@
+/*******************************************************************
+ * This file is part of the Emulex RoCE Device Driver for          *
+ * RoCE (RDMA over Converged Ethernet) adapters.                   *
+ * Copyright (C) 2008-2014 Emulex. All rights reserved.            *
+ * EMULEX and SLI are trademarks of Emulex.                        *
+ * www.emulex.com                                                  *
+ *                                                                 *
+ * This program is free software; you can redistribute it and/or   *
+ * modify it under the terms of version 2 of the GNU General       *
+ * Public License as published by the Free Software Foundation.    *
+ * This program is distributed in the hope that it will be useful. *
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
+ * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
+ * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
+ * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
+ * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
+ * more details, a copy of which can be found in the file COPYING  *
+ * included with this package.                                     *
+ *
+ * Contact Information:
+ * linux-drivers@emulex.com
+ *
+ * Emulex
+ * 3333 Susan Street
+ * Costa Mesa, CA 92626
+ *******************************************************************/
+
+#ifndef __OCRDMA_STATS_H__
+#define __OCRDMA_STATS_H__
+
+#include <linux/debugfs.h>
+#include "ocrdma.h"
+#include "ocrdma_hw.h"
+
+#define OCRDMA_MAX_DBGFS_MEM 4096
+
+enum OCRDMA_STATS_TYPE {
+	OCRDMA_RSRC_STATS,
+	OCRDMA_RXSTATS,
+	OCRDMA_WQESTATS,
+	OCRDMA_TXSTATS,
+	OCRDMA_DB_ERRSTATS,
+	OCRDMA_RXQP_ERRSTATS,
+	OCRDMA_TXQP_ERRSTATS,
+	OCRDMA_TX_DBG_STATS,
+	OCRDMA_RX_DBG_STATS
+};
+
+void ocrdma_rem_debugfs(void);
+void ocrdma_init_debugfs(void);
+void ocrdma_rem_port_stats(struct ocrdma_dev *dev);
+void ocrdma_add_port_stats(struct ocrdma_dev *dev);
+
+#endif	/* __OCRDMA_STATS_H__ */