drivers/infiniband/hw/ocrdma/ocrdma.h - kernel/msm-4.9 - Gitiles

 /* This file is part of the Emulex RoCE Device Driver for
  * RoCE (RDMA over Converged Ethernet) adapters.
  * Copyright (C) 2012-2015 Emulex. All rights reserved.
  * EMULEX and SLI are trademarks of Emulex.
  * www.emulex.com
  *
  * This software is available to you under a choice of one of two licenses.
  * You may choose to be licensed under the terms of the GNU General Public
  * License (GPL) Version 2, available from the file COPYING in the main
  * directory of this source tree, or the BSD license below:
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * - Redistributions of source code must retain the above copyright notice,
  *   this list of conditions and the following disclaimer.
  *
  * - Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimer in
  *   the documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Contact Information:
  * linux-drivers@emulex.com
  *
  * Emulex
  * 3333 Susan Street
  * Costa Mesa, CA 92626
  */

 #ifndef __OCRDMA_H__
 #define __OCRDMA_H__

 #include <linux/mutex.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/pci.h>

 #include <rdma/ib_verbs.h>
 #include <rdma/ib_user_verbs.h>
 #include <rdma/ib_addr.h>

 #include <be_roce.h>
 #include "ocrdma_sli.h"

 #define OCRDMA_ROCE_DRV_VERSION "11.0.0.0"

 #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)
 #define EQ_INTR_PER_SEC_THRSH_HI 150000
 #define EQ_INTR_PER_SEC_THRSH_LOW 100000
 #define EQ_AIC_MAX_EQD 20
 #define EQ_AIC_MIN_EQD 0

 void ocrdma_eqd_set_task(struct work_struct *work);

 struct ocrdma_dev_attr {
 	u8 fw_ver[32];
 	u32 vendor_id;
 	u32 device_id;
 	u16 max_pd;
 	u16 max_dpp_pds;
 	u16 max_cq;
 	u16 max_cqe;
 	u16 max_qp;
 	u16 max_wqe;
 	u16 max_rqe;
 	u16 max_srq;
 	u32 max_inline_data;
 	int max_send_sge;
 	int max_recv_sge;
 	int max_srq_sge;
 	int max_rdma_sge;
 	int max_mr;
 	u64 max_mr_size;
 	u32 max_num_mr_pbl;
 	int max_mw;
 	int max_fmr;
 	int max_map_per_fmr;
 	int max_pages_per_frmr;
 	u16 max_ord_per_qp;
 	u16 max_ird_per_qp;

 	int device_cap_flags;
 	u8 cq_overflow_detect;
 	u8 srq_supported;

 	u32 wqe_size;
 	u32 rqe_size;
 	u32 ird_page_size;
 	u8 local_ca_ack_delay;
 	u8 ird;
 	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;
 };

 struct ocrdma_queue_info {
 	void *va;
 	dma_addr_t dma;
 	u32 size;
 	u16 len;
 	u16 entry_size;		/* Size of an element in the queue */
 	u16 id;			/* qid, where to ring the doorbell. */
 	u16 head, tail;
 	bool created;
 };

 struct ocrdma_aic_obj {         /* Adaptive interrupt coalescing (AIC) info */
 	u32 prev_eqd;
 	u64 eq_intr_cnt;
 	u64 prev_eq_intr_cnt;
 };

 struct ocrdma_eq {
 	struct ocrdma_queue_info q;
 	u32 vector;
 	int cq_cnt;
 	struct ocrdma_dev *dev;
 	char irq_name[32];
 	struct ocrdma_aic_obj aic_obj;
 };

 struct ocrdma_mq {
 	struct ocrdma_queue_info sq;
 	struct ocrdma_queue_info cq;
 	bool rearm_cq;
 };

 struct mqe_ctx {
 	struct mutex lock; /* for serializing mailbox commands on MQ */
 	wait_queue_head_t cmd_wait;
 	u32 tag;
 	u16 cqe_status;
 	u16 ext_status;
 	bool cmd_done;
 	bool fw_error_state;
 };

 struct ocrdma_hw_mr {
 	u32 lkey;
 	u8 fr_mr;
 	u8 remote_atomic;
 	u8 remote_rd;
 	u8 remote_wr;
 	u8 local_rd;
 	u8 local_wr;
 	u8 mw_bind;
 	u8 rsvd;
 	u64 len;
 	struct ocrdma_pbl *pbl_table;
 	u32 num_pbls;
 	u32 num_pbes;
 	u32 pbl_size;
 	u32 pbe_size;
 	u64 fbo;
 	u64 va;
 };

 struct ocrdma_mr {
 	struct ib_mr ibmr;
 	struct ib_umem *umem;
 	struct ocrdma_hw_mr hwmr;
 	u64 *pages;
 	u32 npages;
 };

 struct ocrdma_stats {
 	u8 type;
 	struct ocrdma_dev *dev;
 };

 struct ocrdma_pd_resource_mgr {
 	u32 pd_norm_start;
 	u16 pd_norm_count;
 	u16 pd_norm_thrsh;
 	u16 max_normal_pd;
 	u32 pd_dpp_start;
 	u16 pd_dpp_count;
 	u16 pd_dpp_thrsh;
 	u16 max_dpp_pd;
 	u16 dpp_page_index;
 	unsigned long *pd_norm_bitmap;
 	unsigned long *pd_dpp_bitmap;
 	bool pd_prealloc_valid;
 };

 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;
 };

 enum ocrdma_flags {
 	OCRDMA_FLAGS_LINK_STATUS_INIT = 0x01
 };

 struct ocrdma_dev {
 	struct ib_device ibdev;
 	struct ocrdma_dev_attr attr;

 	struct mutex dev_lock; /* provides syncronise access to device data */
 	spinlock_t flush_q_lock ____cacheline_aligned;

 	struct ocrdma_cq **cq_tbl;
 	struct ocrdma_qp **qp_tbl;

 	struct ocrdma_eq *eq_tbl;
 	int eq_cnt;
 	struct delayed_work eqd_work;
 	u16 base_eqid;
 	u16 max_eq;

 	/* provided synchronization to sgid table for
 	 * updating gid entries triggered by notifier.
 	 */
 	spinlock_t sgid_lock;

 	int gsi_qp_created;
 	struct ocrdma_cq *gsi_sqcq;
 	struct ocrdma_cq *gsi_rqcq;

 	struct {
 		struct ocrdma_av *va;
 		dma_addr_t pa;
 		u32 size;
 		u32 num_ah;
 		/* provide synchronization for av
 		 * entry allocations.
 		 */
 		spinlock_t lock;
 		u32 ahid;
 		struct ocrdma_pbl pbl;
 	} av_tbl;

 	void *mbx_cmd;
 	struct ocrdma_mq mq;
 	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;
 	int id;
 	u64 *stag_arr;
 	u8 sl; /* service level */
 	bool pfc_state;
 	atomic_t update_sl;
 	u16 pvid;
 	u32 asic_id;
 	u32 flags;

 	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 ocrdma_stats driver_stats;
 	struct ocrdma_stats reset_stats;
 	struct dentry *dir;
 	atomic_t async_err_stats[OCRDMA_MAX_ASYNC_ERRORS];
 	atomic_t cqe_err_stats[OCRDMA_MAX_CQE_ERR];
 	struct ocrdma_pd_resource_mgr *pd_mgr;
 };

 struct ocrdma_cq {
 	struct ib_cq ibcq;
 	struct ocrdma_cqe *va;
 	u32 phase;
 	u32 getp;	/* pointer to pending wrs to
 			 * return to stack, wrap arounds
 			 * at max_hw_cqe
 			 */
 	u32 max_hw_cqe;
 	bool phase_change;
 	spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
 						   * to cq polling
 						   */
 	/* syncronizes cq completion handler invoked from multiple context */
 	spinlock_t comp_handler_lock ____cacheline_aligned;
 	u16 id;
 	u16 eqn;

 	struct ocrdma_ucontext *ucontext;
 	dma_addr_t pa;
 	u32 len;
 	u32 cqe_cnt;

 	/* head of all qp's sq and rq for which cqes need to be flushed
 	 * by the software.
 	 */
 	struct list_head sq_head, rq_head;
 };

 struct ocrdma_pd {
 	struct ib_pd ibpd;
 	struct ocrdma_ucontext *uctx;
 	u32 id;
 	int num_dpp_qp;
 	u32 dpp_page;
 	bool dpp_enabled;
 };

 struct ocrdma_ah {
 	struct ib_ah ibah;
 	struct ocrdma_av *av;
 	u16 sgid_index;
 	u32 id;
 };

 struct ocrdma_qp_hwq_info {
 	u8 *va;			/* virtual address */
 	u32 max_sges;
 	u32 head, tail;
 	u32 entry_size;
 	u32 max_cnt;
 	u32 max_wqe_idx;
 	u16 dbid;		/* qid, where to ring the doorbell. */
 	u32 len;
 	dma_addr_t pa;
 };

 struct ocrdma_srq {
 	struct ib_srq ibsrq;
 	u8 __iomem *db;
 	struct ocrdma_qp_hwq_info rq;
 	u64 *rqe_wr_id_tbl;
 	u32 *idx_bit_fields;
 	u32 bit_fields_len;

 	/* provide synchronization to multiple context(s) posting rqe */
 	spinlock_t q_lock ____cacheline_aligned;

 	struct ocrdma_pd *pd;
 	u32 id;
 };

 struct ocrdma_qp {
 	struct ib_qp ibqp;

 	u8 __iomem *sq_db;
 	struct ocrdma_qp_hwq_info sq;
 	struct {
 		uint64_t wrid;
 		uint16_t dpp_wqe_idx;
 		uint16_t dpp_wqe;
 		uint8_t  signaled;
 		uint8_t  rsvd[3];
 	} *wqe_wr_id_tbl;
 	u32 max_inline_data;

 	/* provide synchronization to multiple context(s) posting wqe, rqe */
 	spinlock_t q_lock ____cacheline_aligned;
 	struct ocrdma_cq *sq_cq;
 	/* list maintained per CQ to flush SQ errors */
 	struct list_head sq_entry;

 	u8 __iomem *rq_db;
 	struct ocrdma_qp_hwq_info rq;
 	u64 *rqe_wr_id_tbl;
 	struct ocrdma_cq *rq_cq;
 	struct ocrdma_srq *srq;
 	/* list maintained per CQ to flush RQ errors */
 	struct list_head rq_entry;

 	enum ocrdma_qp_state state;	/*  QP state */
 	int cap_flags;
 	u32 max_ord, max_ird;

 	u32 id;
 	struct ocrdma_pd *pd;

 	enum ib_qp_type qp_type;

 	int sgid_idx;
 	u32 qkey;
 	bool dpp_enabled;
 	u8 *ird_q_va;
 	bool signaled;
 };

 struct ocrdma_ucontext {
 	struct ib_ucontext ibucontext;

 	struct list_head mm_head;
 	struct mutex mm_list_lock; /* protects list entries of mm type */
 	struct ocrdma_pd *cntxt_pd;
 	int pd_in_use;

 	struct {
 		u32 *va;
 		dma_addr_t pa;
 		u32 len;
 	} ah_tbl;
 };

 struct ocrdma_mm {
 	struct {
 		u64 phy_addr;
 		unsigned long len;
 	} key;
 	struct list_head entry;
 };

 static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev)
 {
 	return container_of(ibdev, struct ocrdma_dev, ibdev);
 }

 static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
 							  *ibucontext)
 {
 	return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
 }

 static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd)
 {
 	return container_of(ibpd, struct ocrdma_pd, ibpd);
 }

 static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq)
 {
 	return container_of(ibcq, struct ocrdma_cq, ibcq);
 }

 static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp)
 {
 	return container_of(ibqp, struct ocrdma_qp, ibqp);
 }

 static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr)
 {
 	return container_of(ibmr, struct ocrdma_mr, ibmr);
 }

 static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah)
 {
 	return container_of(ibah, struct ocrdma_ah, ibah);
 }

 static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq)
 {
 	return container_of(ibsrq, struct ocrdma_srq, ibsrq);
 }

 static inline int is_cqe_valid(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe)
 {
 	int cqe_valid;
 	cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID;
 	return (cqe_valid == cq->phase);
 }

 static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe)
 {
 	return (le32_to_cpu(cqe->flags_status_srcqpn) &
 		OCRDMA_CQE_QTYPE) ? 0 : 1;
 }

 static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe)
 {
 	return (le32_to_cpu(cqe->flags_status_srcqpn) &
 		OCRDMA_CQE_INVALIDATE) ? 1 : 0;
 }

 static inline int is_cqe_imm(struct ocrdma_cqe *cqe)
 {
 	return (le32_to_cpu(cqe->flags_status_srcqpn) &
 		OCRDMA_CQE_IMM) ? 1 : 0;
 }

 static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe)
 {
 	return (le32_to_cpu(cqe->flags_status_srcqpn) &
 		OCRDMA_CQE_WRITE_IMM) ? 1 : 0;
 }

 static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev,
 		struct ib_ah_attr *ah_attr, u8 *mac_addr)
 {
 	struct in6_addr in6;

 	memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
 	if (rdma_is_multicast_addr(&in6))
 		rdma_get_mcast_mac(&in6, mac_addr);
 	else if (rdma_link_local_addr(&in6))
 		rdma_get_ll_mac(&in6, mac_addr);
 	else
 		memcpy(mac_addr, ah_attr->dmac, ETH_ALEN);
 	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)
 {
 	int indx;

 	for (indx = 0; indx < dev->eq_cnt; indx++) {
 		if (dev->eq_tbl[indx].q.id == eqid)
 			return indx;
 	}

 	return -EINVAL;
 }

 static inline u8 ocrdma_get_asic_type(struct ocrdma_dev *dev)
 {
 	if (dev->nic_info.dev_family == 0xF && !dev->asic_id) {
 		pci_read_config_dword(
 			dev->nic_info.pdev,
 			OCRDMA_SLI_ASIC_ID_OFFSET, &dev->asic_id);
 	}

 	return (dev->asic_id & OCRDMA_SLI_ASIC_GEN_NUM_MASK) >>
 				OCRDMA_SLI_ASIC_GEN_NUM_SHIFT;
 }

 static inline u8 ocrdma_get_pfc_prio(u8 *pfc, u8 prio)
 {
 	return *(pfc + prio);
 }

 static inline u8 ocrdma_get_app_prio(u8 *app_prio, u8 prio)
 {
 	return *(app_prio + prio);
 }

 static inline u8 ocrdma_is_enabled_and_synced(u32 state)
 {	/* May also be used to interpret TC-state, QCN-state
 	 * Appl-state and Logical-link-state in future.
 	 */
 	return (state & OCRDMA_STATE_FLAG_ENABLED) &&
 		(state & OCRDMA_STATE_FLAG_SYNC);
 }

 static inline u8 ocrdma_get_ae_link_state(u32 ae_state)
 {
 	return ((ae_state & OCRDMA_AE_LSC_LS_MASK) >> OCRDMA_AE_LSC_LS_SHIFT);
 }

 #endif
	/* This file is part of the Emulex RoCE Device Driver for
	* RoCE (RDMA over Converged Ethernet) adapters.
	* Copyright (C) 2012-2015 Emulex. All rights reserved.
	* EMULEX and SLI are trademarks of Emulex.
	* www.emulex.com
	*
	* This software is available to you under a choice of one of two licenses.
	* You may choose to be licensed under the terms of the GNU General Public
	* License (GPL) Version 2, available from the file COPYING in the main
	* directory of this source tree, or the BSD license below:
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* - Redistributions of source code must retain the above copyright notice,
	* this list of conditions and the following disclaimer.
	*
	* - Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
	* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
	* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Contact Information:
	* linux-drivers@emulex.com
	*
	* Emulex
	* 3333 Susan Street
	* Costa Mesa, CA 92626
	*/

	#ifndef __OCRDMA_H__
	#define __OCRDMA_H__

	#include <linux/mutex.h>
	#include <linux/list.h>
	#include <linux/spinlock.h>
	#include <linux/pci.h>

	#include <rdma/ib_verbs.h>
	#include <rdma/ib_user_verbs.h>
	#include <rdma/ib_addr.h>

	#include <be_roce.h>
	#include "ocrdma_sli.h"

	#define OCRDMA_ROCE_DRV_VERSION "11.0.0.0"

	#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)
	#define EQ_INTR_PER_SEC_THRSH_HI 150000
	#define EQ_INTR_PER_SEC_THRSH_LOW 100000
	#define EQ_AIC_MAX_EQD 20
	#define EQ_AIC_MIN_EQD 0

	void ocrdma_eqd_set_task(struct work_struct *work);

	struct ocrdma_dev_attr {
	u8 fw_ver[32];
	u32 vendor_id;
	u32 device_id;
	u16 max_pd;
	u16 max_dpp_pds;
	u16 max_cq;
	u16 max_cqe;
	u16 max_qp;
	u16 max_wqe;
	u16 max_rqe;
	u16 max_srq;
	u32 max_inline_data;
	int max_send_sge;
	int max_recv_sge;
	int max_srq_sge;
	int max_rdma_sge;
	int max_mr;
	u64 max_mr_size;
	u32 max_num_mr_pbl;
	int max_mw;
	int max_fmr;
	int max_map_per_fmr;
	int max_pages_per_frmr;
	u16 max_ord_per_qp;
	u16 max_ird_per_qp;

	int device_cap_flags;
	u8 cq_overflow_detect;
	u8 srq_supported;

	u32 wqe_size;
	u32 rqe_size;
	u32 ird_page_size;
	u8 local_ca_ack_delay;
	u8 ird;
	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;
	};

	struct ocrdma_queue_info {
	void *va;
	dma_addr_t dma;
	u32 size;
	u16 len;
	u16 entry_size; /* Size of an element in the queue */
	u16 id; /* qid, where to ring the doorbell. */
	u16 head, tail;
	bool created;
	};

	struct ocrdma_aic_obj { /* Adaptive interrupt coalescing (AIC) info */
	u32 prev_eqd;
	u64 eq_intr_cnt;
	u64 prev_eq_intr_cnt;
	};

	struct ocrdma_eq {
	struct ocrdma_queue_info q;
	u32 vector;
	int cq_cnt;
	struct ocrdma_dev *dev;
	char irq_name[32];
	struct ocrdma_aic_obj aic_obj;
	};

	struct ocrdma_mq {
	struct ocrdma_queue_info sq;
	struct ocrdma_queue_info cq;
	bool rearm_cq;
	};

	struct mqe_ctx {
	struct mutex lock; /* for serializing mailbox commands on MQ */
	wait_queue_head_t cmd_wait;
	u32 tag;
	u16 cqe_status;
	u16 ext_status;
	bool cmd_done;
	bool fw_error_state;
	};

	struct ocrdma_hw_mr {
	u32 lkey;
	u8 fr_mr;
	u8 remote_atomic;
	u8 remote_rd;
	u8 remote_wr;
	u8 local_rd;
	u8 local_wr;
	u8 mw_bind;
	u8 rsvd;
	u64 len;
	struct ocrdma_pbl *pbl_table;
	u32 num_pbls;
	u32 num_pbes;
	u32 pbl_size;
	u32 pbe_size;
	u64 fbo;
	u64 va;
	};

	struct ocrdma_mr {
	struct ib_mr ibmr;
	struct ib_umem *umem;
	struct ocrdma_hw_mr hwmr;
	u64 *pages;
	u32 npages;
	};

	struct ocrdma_stats {
	u8 type;
	struct ocrdma_dev *dev;
	};

	struct ocrdma_pd_resource_mgr {
	u32 pd_norm_start;
	u16 pd_norm_count;
	u16 pd_norm_thrsh;
	u16 max_normal_pd;
	u32 pd_dpp_start;
	u16 pd_dpp_count;
	u16 pd_dpp_thrsh;
	u16 max_dpp_pd;
	u16 dpp_page_index;
	unsigned long *pd_norm_bitmap;
	unsigned long *pd_dpp_bitmap;
	bool pd_prealloc_valid;
	};

	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;
	};

	enum ocrdma_flags {
	OCRDMA_FLAGS_LINK_STATUS_INIT = 0x01
	};

	struct ocrdma_dev {
	struct ib_device ibdev;
	struct ocrdma_dev_attr attr;

	struct mutex dev_lock; /* provides syncronise access to device data */
	spinlock_t flush_q_lock ____cacheline_aligned;

	struct ocrdma_cq **cq_tbl;
	struct ocrdma_qp **qp_tbl;

	struct ocrdma_eq *eq_tbl;
	int eq_cnt;
	struct delayed_work eqd_work;
	u16 base_eqid;
	u16 max_eq;

	/* provided synchronization to sgid table for
	* updating gid entries triggered by notifier.
	*/
	spinlock_t sgid_lock;

	int gsi_qp_created;
	struct ocrdma_cq *gsi_sqcq;
	struct ocrdma_cq *gsi_rqcq;

	struct {
	struct ocrdma_av *va;
	dma_addr_t pa;
	u32 size;
	u32 num_ah;
	/* provide synchronization for av
	* entry allocations.
	*/
	spinlock_t lock;
	u32 ahid;
	struct ocrdma_pbl pbl;
	} av_tbl;

	void *mbx_cmd;
	struct ocrdma_mq mq;
	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;
	int id;
	u64 *stag_arr;
	u8 sl; /* service level */
	bool pfc_state;
	atomic_t update_sl;
	u16 pvid;
	u32 asic_id;
	u32 flags;

	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 ocrdma_stats driver_stats;
	struct ocrdma_stats reset_stats;
	struct dentry *dir;
	atomic_t async_err_stats[OCRDMA_MAX_ASYNC_ERRORS];
	atomic_t cqe_err_stats[OCRDMA_MAX_CQE_ERR];
	struct ocrdma_pd_resource_mgr *pd_mgr;
	};

	struct ocrdma_cq {
	struct ib_cq ibcq;
	struct ocrdma_cqe *va;
	u32 phase;
	u32 getp; /* pointer to pending wrs to
	* return to stack, wrap arounds
	* at max_hw_cqe
	*/
	u32 max_hw_cqe;
	bool phase_change;
	spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
	* to cq polling
	*/
	/* syncronizes cq completion handler invoked from multiple context */
	spinlock_t comp_handler_lock ____cacheline_aligned;
	u16 id;
	u16 eqn;

	struct ocrdma_ucontext *ucontext;
	dma_addr_t pa;
	u32 len;
	u32 cqe_cnt;

	/* head of all qp's sq and rq for which cqes need to be flushed
	* by the software.
	*/
	struct list_head sq_head, rq_head;
	};

	struct ocrdma_pd {
	struct ib_pd ibpd;
	struct ocrdma_ucontext *uctx;
	u32 id;
	int num_dpp_qp;
	u32 dpp_page;
	bool dpp_enabled;
	};

	struct ocrdma_ah {
	struct ib_ah ibah;
	struct ocrdma_av *av;
	u16 sgid_index;
	u32 id;
	};

	struct ocrdma_qp_hwq_info {
	u8 va; / virtual address */
	u32 max_sges;
	u32 head, tail;
	u32 entry_size;
	u32 max_cnt;
	u32 max_wqe_idx;
	u16 dbid; /* qid, where to ring the doorbell. */
	u32 len;
	dma_addr_t pa;
	};

	struct ocrdma_srq {
	struct ib_srq ibsrq;
	u8 __iomem *db;
	struct ocrdma_qp_hwq_info rq;
	u64 *rqe_wr_id_tbl;
	u32 *idx_bit_fields;
	u32 bit_fields_len;

	/* provide synchronization to multiple context(s) posting rqe */
	spinlock_t q_lock ____cacheline_aligned;

	struct ocrdma_pd *pd;
	u32 id;
	};

	struct ocrdma_qp {
	struct ib_qp ibqp;

	u8 __iomem *sq_db;
	struct ocrdma_qp_hwq_info sq;
	struct {
	uint64_t wrid;
	uint16_t dpp_wqe_idx;
	uint16_t dpp_wqe;
	uint8_t signaled;
	uint8_t rsvd[3];
	} *wqe_wr_id_tbl;
	u32 max_inline_data;

	/* provide synchronization to multiple context(s) posting wqe, rqe */
	spinlock_t q_lock ____cacheline_aligned;
	struct ocrdma_cq *sq_cq;
	/* list maintained per CQ to flush SQ errors */
	struct list_head sq_entry;

	u8 __iomem *rq_db;
	struct ocrdma_qp_hwq_info rq;
	u64 *rqe_wr_id_tbl;
	struct ocrdma_cq *rq_cq;
	struct ocrdma_srq *srq;
	/* list maintained per CQ to flush RQ errors */
	struct list_head rq_entry;

	enum ocrdma_qp_state state; /* QP state */
	int cap_flags;
	u32 max_ord, max_ird;

	u32 id;
	struct ocrdma_pd *pd;

	enum ib_qp_type qp_type;

	int sgid_idx;
	u32 qkey;
	bool dpp_enabled;
	u8 *ird_q_va;
	bool signaled;
	};

	struct ocrdma_ucontext {
	struct ib_ucontext ibucontext;

	struct list_head mm_head;
	struct mutex mm_list_lock; /* protects list entries of mm type */
	struct ocrdma_pd *cntxt_pd;
	int pd_in_use;

	struct {
	u32 *va;
	dma_addr_t pa;
	u32 len;
	} ah_tbl;
	};

	struct ocrdma_mm {
	struct {
	u64 phy_addr;
	unsigned long len;
	} key;
	struct list_head entry;
	};

	static inline struct ocrdma_dev get_ocrdma_dev(struct ib_device ibdev)
	{
	return container_of(ibdev, struct ocrdma_dev, ibdev);
	}

	static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
	*ibucontext)
	{
	return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
	}

	static inline struct ocrdma_pd get_ocrdma_pd(struct ib_pd ibpd)
	{
	return container_of(ibpd, struct ocrdma_pd, ibpd);
	}

	static inline struct ocrdma_cq get_ocrdma_cq(struct ib_cq ibcq)
	{
	return container_of(ibcq, struct ocrdma_cq, ibcq);
	}

	static inline struct ocrdma_qp get_ocrdma_qp(struct ib_qp ibqp)
	{
	return container_of(ibqp, struct ocrdma_qp, ibqp);
	}

	static inline struct ocrdma_mr get_ocrdma_mr(struct ib_mr ibmr)
	{
	return container_of(ibmr, struct ocrdma_mr, ibmr);
	}

	static inline struct ocrdma_ah get_ocrdma_ah(struct ib_ah ibah)
	{
	return container_of(ibah, struct ocrdma_ah, ibah);
	}

	static inline struct ocrdma_srq get_ocrdma_srq(struct ib_srq ibsrq)
	{
	return container_of(ibsrq, struct ocrdma_srq, ibsrq);
	}

	static inline int is_cqe_valid(struct ocrdma_cq cq, struct ocrdma_cqe cqe)
	{
	int cqe_valid;
	cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID;
	return (cqe_valid == cq->phase);
	}

	static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe)
	{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
	OCRDMA_CQE_QTYPE) ? 0 : 1;
	}

	static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe)
	{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
	OCRDMA_CQE_INVALIDATE) ? 1 : 0;
	}

	static inline int is_cqe_imm(struct ocrdma_cqe *cqe)
	{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
	OCRDMA_CQE_IMM) ? 1 : 0;
	}

	static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe)
	{
	return (le32_to_cpu(cqe->flags_status_srcqpn) &
	OCRDMA_CQE_WRITE_IMM) ? 1 : 0;
	}

	static inline int ocrdma_resolve_dmac(struct ocrdma_dev *dev,
	struct ib_ah_attr ah_attr, u8 mac_addr)
	{
	struct in6_addr in6;

	memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
	if (rdma_is_multicast_addr(&in6))
	rdma_get_mcast_mac(&in6, mac_addr);
	else if (rdma_link_local_addr(&in6))
	rdma_get_ll_mac(&in6, mac_addr);
	else
	memcpy(mac_addr, ah_attr->dmac, ETH_ALEN);
	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)
	{
	int indx;

	for (indx = 0; indx < dev->eq_cnt; indx++) {
	if (dev->eq_tbl[indx].q.id == eqid)
	return indx;
	}

	return -EINVAL;
	}

	static inline u8 ocrdma_get_asic_type(struct ocrdma_dev *dev)
	{
	if (dev->nic_info.dev_family == 0xF && !dev->asic_id) {
	pci_read_config_dword(
	dev->nic_info.pdev,
	OCRDMA_SLI_ASIC_ID_OFFSET, &dev->asic_id);
	}

	return (dev->asic_id & OCRDMA_SLI_ASIC_GEN_NUM_MASK) >>
	OCRDMA_SLI_ASIC_GEN_NUM_SHIFT;
	}

	static inline u8 ocrdma_get_pfc_prio(u8 *pfc, u8 prio)
	{
	return *(pfc + prio);
	}

	static inline u8 ocrdma_get_app_prio(u8 *app_prio, u8 prio)
	{
	return *(app_prio + prio);
	}

	static inline u8 ocrdma_is_enabled_and_synced(u32 state)
	{ /* May also be used to interpret TC-state, QCN-state
	* Appl-state and Logical-link-state in future.
	*/
	return (state & OCRDMA_STATE_FLAG_ENABLED) &&
	(state & OCRDMA_STATE_FLAG_SYNC);
	}

	static inline u8 ocrdma_get_ae_link_state(u32 ae_state)
	{
	return ((ae_state & OCRDMA_AE_LSC_LS_MASK) >> OCRDMA_AE_LSC_LS_SHIFT);
	}

	#endif