/*
 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
 *
 * 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
 * OpenIB.org 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.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef MLX5_IB_H
#define MLX5_IB_H

#include <linux/kernel.h>
#include <linux/sched.h>
#include <rdma/ib_verbs.h>
#include <rdma/ib_smi.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/qp.h>
#include <linux/mlx5/srq.h>
#include <linux/types.h>
#include <linux/mlx5/transobj.h>
#include <rdma/ib_user_verbs.h>

#define mlx5_ib_dbg(dev, format, arg...)                                \
pr_debug("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,    \
         __LINE__, current->pid, ##arg)

#define mlx5_ib_err(dev, format, arg...)                                \
pr_err("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,      \
        __LINE__, current->pid, ##arg)

#define mlx5_ib_warn(dev, format, arg...)                               \
pr_warn("%s:%s:%d:(pid %d): " format, (dev)->ib_dev.name, __func__,     \
        __LINE__, current->pid, ##arg)

#define field_avail(type, fld, sz) (offsetof(type, fld) +               \
                                    sizeof(((type *)0)->fld) <= (sz))
#define MLX5_IB_DEFAULT_UIDX 0xffffff
#define MLX5_USER_ASSIGNED_UIDX_MASK __mlx5_mask(qpc, user_index)

enum {
        MLX5_IB_MMAP_CMD_SHIFT  = 8,
        MLX5_IB_MMAP_CMD_MASK   = 0xff,
};

enum mlx5_ib_mmap_cmd {
        MLX5_IB_MMAP_REGULAR_PAGE               = 0,
        MLX5_IB_MMAP_GET_CONTIGUOUS_PAGES       = 1,
        MLX5_IB_MMAP_WC_PAGE                    = 2,
        MLX5_IB_MMAP_NC_PAGE                    = 3,
        /* 5 is chosen in order to be compatible with old versions of libmlx5 */
        MLX5_IB_MMAP_CORE_CLOCK                 = 5,
};

enum {
        MLX5_RES_SCAT_DATA32_CQE        = 0x1,
        MLX5_RES_SCAT_DATA64_CQE        = 0x2,
        MLX5_REQ_SCAT_DATA32_CQE        = 0x11,
        MLX5_REQ_SCAT_DATA64_CQE        = 0x22,
};

enum mlx5_ib_latency_class {
        MLX5_IB_LATENCY_CLASS_LOW,
        MLX5_IB_LATENCY_CLASS_MEDIUM,
        MLX5_IB_LATENCY_CLASS_HIGH,
        MLX5_IB_LATENCY_CLASS_FAST_PATH
};

enum mlx5_ib_mad_ifc_flags {
        MLX5_MAD_IFC_IGNORE_MKEY        = 1,
        MLX5_MAD_IFC_IGNORE_BKEY        = 2,
        MLX5_MAD_IFC_NET_VIEW           = 4,
};

enum {
        MLX5_CROSS_CHANNEL_UUAR         = 0,
};

enum {
        MLX5_CQE_VERSION_V0,
        MLX5_CQE_VERSION_V1,
};

struct mlx5_ib_vma_private_data {
        struct list_head list;
        struct vm_area_struct *vma;
};

struct mlx5_ib_ucontext {
        struct ib_ucontext      ibucontext;
        struct list_head        db_page_list;

        /* protect doorbell record alloc/free
         */
        struct mutex            db_page_mutex;
        struct mlx5_uuar_info   uuari;
        u8                      cqe_version;
        /* Transport Domain number */
        u32                     tdn;
        struct list_head        vma_private_list;
};

static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
{
        return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
}

struct mlx5_ib_pd {
        struct ib_pd            ibpd;
        u32                     pdn;
};

#define MLX5_IB_FLOW_MCAST_PRIO         (MLX5_BY_PASS_NUM_PRIOS - 1)
#define MLX5_IB_FLOW_LAST_PRIO          (MLX5_BY_PASS_NUM_REGULAR_PRIOS - 1)
#if (MLX5_IB_FLOW_LAST_PRIO <= 0)
#error "Invalid number of bypass priorities"
#endif
#define MLX5_IB_FLOW_LEFTOVERS_PRIO     (MLX5_IB_FLOW_MCAST_PRIO + 1)

#define MLX5_IB_NUM_FLOW_FT             (MLX5_IB_FLOW_LEFTOVERS_PRIO + 1)
struct mlx5_ib_flow_prio {
        struct mlx5_flow_table          *flow_table;
        unsigned int                    refcount;
};

struct mlx5_ib_flow_handler {
        struct list_head                list;
        struct ib_flow                  ibflow;
        unsigned int                    prio;
        struct mlx5_flow_rule   *rule;
};

struct mlx5_ib_flow_db {
        struct mlx5_ib_flow_prio        prios[MLX5_IB_NUM_FLOW_FT];
        /* Protect flow steering bypass flow tables
         * when add/del flow rules.
         * only single add/removal of flow steering rule could be done
         * simultaneously.
         */
        struct mutex                    lock;
};

/* Use macros here so that don't have to duplicate
 * enum ib_send_flags and enum ib_qp_type for low-level driver
 */

#define MLX5_IB_SEND_UMR_UNREG  IB_SEND_RESERVED_START
#define MLX5_IB_SEND_UMR_FAIL_IF_FREE (IB_SEND_RESERVED_START << 1)
#define MLX5_IB_SEND_UMR_UPDATE_MTT (IB_SEND_RESERVED_START << 2)

#define MLX5_IB_SEND_UMR_UPDATE_TRANSLATION     (IB_SEND_RESERVED_START << 3)
#define MLX5_IB_SEND_UMR_UPDATE_PD              (IB_SEND_RESERVED_START << 4)
#define MLX5_IB_SEND_UMR_UPDATE_ACCESS          IB_SEND_RESERVED_END

#define MLX5_IB_QPT_REG_UMR     IB_QPT_RESERVED1
/*
 * IB_QPT_GSI creates the software wrapper around GSI, and MLX5_IB_QPT_HW_GSI
 * creates the actual hardware QP.
 */
#define MLX5_IB_QPT_HW_GSI      IB_QPT_RESERVED2
#define MLX5_IB_WR_UMR          IB_WR_RESERVED1

/* Private QP creation flags to be passed in ib_qp_init_attr.create_flags.
 *
 * These flags are intended for internal use by the mlx5_ib driver, and they
 * rely on the range reserved for that use in the ib_qp_create_flags enum.
 */

/* Create a UD QP whose source QP number is 1 */
static inline enum ib_qp_create_flags mlx5_ib_create_qp_sqpn_qp1(void)
{
        return IB_QP_CREATE_RESERVED_START;
}

struct wr_list {
        u16     opcode;
        u16     next;
};

struct mlx5_ib_wq {
        u64                    *wrid;
        u32                    *wr_data;
        struct wr_list         *w_list;
        unsigned               *wqe_head;
        u16                     unsig_count;

        /* serialize post to the work queue
         */
        spinlock_t              lock;
        int                     wqe_cnt;
        int                     max_post;
        int                     max_gs;
        int                     offset;
        int                     wqe_shift;
        unsigned                head;
        unsigned                tail;
        u16                     cur_post;
        u16                     last_poll;
        void                   *qend;
};

struct mlx5_ib_rwq {
        struct ib_wq            ibwq;
        u32                     rqn;
        u32                     rq_num_pas;
        u32                     log_rq_stride;
        u32                     log_rq_size;
        u32                     rq_page_offset;
        u32                     log_page_size;
        struct ib_umem          *umem;
        size_t                  buf_size;
        unsigned int            page_shift;
        int                     create_type;
        struct mlx5_db          db;
        u32                     user_index;
        u32                     wqe_count;
        u32                     wqe_shift;
        int                     wq_sig;
};

enum {
        MLX5_QP_USER,
        MLX5_QP_KERNEL,
        MLX5_QP_EMPTY
};

enum {
        MLX5_WQ_USER,
        MLX5_WQ_KERNEL
};

struct mlx5_ib_rwq_ind_table {
        struct ib_rwq_ind_table ib_rwq_ind_tbl;
        u32                     rqtn;
};

/*
 * Connect-IB can trigger up to four concurrent pagefaults
 * per-QP.
 */
enum mlx5_ib_pagefault_context {
        MLX5_IB_PAGEFAULT_RESPONDER_READ,
        MLX5_IB_PAGEFAULT_REQUESTOR_READ,
        MLX5_IB_PAGEFAULT_RESPONDER_WRITE,
        MLX5_IB_PAGEFAULT_REQUESTOR_WRITE,
        MLX5_IB_PAGEFAULT_CONTEXTS
};

static inline enum mlx5_ib_pagefault_context
        mlx5_ib_get_pagefault_context(struct mlx5_pagefault *pagefault)
{
        return pagefault->flags & (MLX5_PFAULT_REQUESTOR | MLX5_PFAULT_WRITE);
}

struct mlx5_ib_pfault {
        struct work_struct      work;
        struct mlx5_pagefault   mpfault;
};

struct mlx5_ib_ubuffer {
        struct ib_umem         *umem;
        int                     buf_size;
        u64                     buf_addr;
};

struct mlx5_ib_qp_base {
        struct mlx5_ib_qp       *container_mibqp;
        struct mlx5_core_qp     mqp;
        struct mlx5_ib_ubuffer  ubuffer;
};

struct mlx5_ib_qp_trans {
        struct mlx5_ib_qp_base  base;
        u16                     xrcdn;
        u8                      alt_port;
        u8                      atomic_rd_en;
        u8                      resp_depth;
};

struct mlx5_ib_rss_qp {
        u32     tirn;
};

struct mlx5_ib_rq {
        struct mlx5_ib_qp_base base;
        struct mlx5_ib_wq       *rq;
        struct mlx5_ib_ubuffer  ubuffer;
        struct mlx5_db          *doorbell;
        u32                     tirn;
        u8                      state;
};

struct mlx5_ib_sq {
        struct mlx5_ib_qp_base base;
        struct mlx5_ib_wq       *sq;
        struct mlx5_ib_ubuffer  ubuffer;
        struct mlx5_db          *doorbell;
        u32                     tisn;
        u8                      state;
};

struct mlx5_ib_raw_packet_qp {
        struct mlx5_ib_sq sq;
        struct mlx5_ib_rq rq;
};

struct mlx5_ib_qp {
        struct ib_qp            ibqp;
        union {
                struct mlx5_ib_qp_trans trans_qp;
                struct mlx5_ib_raw_packet_qp raw_packet_qp;
                struct mlx5_ib_rss_qp rss_qp;
        };
        struct mlx5_buf         buf;

        struct mlx5_db          db;
        struct mlx5_ib_wq       rq;

        u8                      sq_signal_bits;
        u8                      fm_cache;
        struct mlx5_ib_wq       sq;

        /* serialize qp state modifications
         */
        struct mutex            mutex;
        u32                     flags;
        u8                      port;
        u8                      state;
        int                     wq_sig;
        int                     scat_cqe;
        int                     max_inline_data;
        struct mlx5_bf         *bf;
        int                     has_rq;

        /* only for user space QPs. For kernel
         * we have it from the bf object
         */
        int                     uuarn;

        int                     create_type;

        /* Store signature errors */
        bool                    signature_en;

#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
        /*
         * A flag that is true for QP's that are in a state that doesn't
         * allow page faults, and shouldn't schedule any more faults.
         */
        int                     disable_page_faults;
        /*
         * The disable_page_faults_lock protects a QP's disable_page_faults
         * field, allowing for a thread to atomically check whether the QP
         * allows page faults, and if so schedule a page fault.
         */
        spinlock_t              disable_page_faults_lock;
        struct mlx5_ib_pfault   pagefaults[MLX5_IB_PAGEFAULT_CONTEXTS];
#endif
        struct list_head        qps_list;
        struct list_head        cq_recv_list;
        struct list_head        cq_send_list;
};

struct mlx5_ib_cq_buf {
        struct mlx5_buf         buf;
        struct ib_umem          *umem;
        int                     cqe_size;
        int                     nent;
};

enum mlx5_ib_qp_flags {
        MLX5_IB_QP_LSO                          = IB_QP_CREATE_IPOIB_UD_LSO,
        MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK     = IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK,
        MLX5_IB_QP_CROSS_CHANNEL            = IB_QP_CREATE_CROSS_CHANNEL,
        MLX5_IB_QP_MANAGED_SEND             = IB_QP_CREATE_MANAGED_SEND,
        MLX5_IB_QP_MANAGED_RECV             = IB_QP_CREATE_MANAGED_RECV,
        MLX5_IB_QP_SIGNATURE_HANDLING           = 1 << 5,
        /* QP uses 1 as its source QP number */
        MLX5_IB_QP_SQPN_QP1                     = 1 << 6,
        MLX5_IB_QP_CAP_SCATTER_FCS              = 1 << 7,
        MLX5_IB_QP_RSS                          = 1 << 8,
};

struct mlx5_umr_wr {
        struct ib_send_wr               wr;
        union {
                u64                     virt_addr;
                u64                     offset;
        } target;
        struct ib_pd                   *pd;
        unsigned int                    page_shift;
        unsigned int                    npages;
        u32                             length;
        int                             access_flags;
        u32                             mkey;
};

static inline struct mlx5_umr_wr *umr_wr(struct ib_send_wr *wr)
{
        return container_of(wr, struct mlx5_umr_wr, wr);
}

struct mlx5_shared_mr_info {
        int mr_id;
        struct ib_umem          *umem;
};

struct mlx5_ib_cq {
        struct ib_cq            ibcq;
        struct mlx5_core_cq     mcq;
        struct mlx5_ib_cq_buf   buf;
        struct mlx5_db          db;

        /* serialize access to the CQ
         */
        spinlock_t              lock;

        /* protect resize cq
         */
        struct mutex            resize_mutex;
        struct mlx5_ib_cq_buf  *resize_buf;
        struct ib_umem         *resize_umem;
        int                     cqe_size;
        struct list_head        list_send_qp;
        struct list_head        list_recv_qp;
        u32                     create_flags;
        struct list_head        wc_list;
        enum ib_cq_notify_flags notify_flags;
        struct work_struct      notify_work;
};

struct mlx5_ib_wc {
        struct ib_wc wc;
        struct list_head list;
};

struct mlx5_ib_srq {
        struct ib_srq           ibsrq;
        struct mlx5_core_srq    msrq;
        struct mlx5_buf         buf;
        struct mlx5_db          db;
        u64                    *wrid;
        /* protect SRQ hanlding
         */
        spinlock_t              lock;
        int                     head;
        int                     tail;
        u16                     wqe_ctr;
        struct ib_umem         *umem;
        /* serialize arming a SRQ
         */
        struct mutex            mutex;
        int                     wq_sig;
};

struct mlx5_ib_xrcd {
        struct ib_xrcd          ibxrcd;
        u32                     xrcdn;
};

enum mlx5_ib_mtt_access_flags {
        MLX5_IB_MTT_READ  = (1 << 0),
        MLX5_IB_MTT_WRITE = (1 << 1),
};

#define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)

struct mlx5_ib_mr {
        struct ib_mr            ibmr;
        void                    *descs;
        dma_addr_t              desc_map;
        int                     ndescs;
        int                     max_descs;
        int                     desc_size;
        int                     access_mode;
        struct mlx5_core_mkey   mmkey;
        struct ib_umem         *umem;
        struct mlx5_shared_mr_info      *smr_info;
        struct list_head        list;
        int                     order;
        int                     umred;
        int                     npages;
        struct mlx5_ib_dev     *dev;
        struct mlx5_create_mkey_mbox_out out;
        struct mlx5_core_sig_ctx    *sig;
        int                     live;
        void                    *descs_alloc;
        int                     access_flags; /* Needed for rereg MR */
};

struct mlx5_ib_mw {
        struct ib_mw            ibmw;
        struct mlx5_core_mkey   mmkey;
};

struct mlx5_ib_umr_context {
        struct ib_cqe           cqe;
        enum ib_wc_status       status;
        struct completion       done;
};

struct umr_common {
        struct ib_pd    *pd;
        struct ib_cq    *cq;
        struct ib_qp    *qp;
        /* control access to UMR QP
         */
        struct semaphore        sem;
};

enum {
        MLX5_FMR_INVALID,
        MLX5_FMR_VALID,
        MLX5_FMR_BUSY,
};

struct mlx5_cache_ent {
        struct list_head        head;
        /* sync access to the cahce entry
         */
        spinlock_t              lock;


        struct dentry          *dir;
        char                    name[4];
        u32                     order;
        u32                     size;
        u32                     cur;
        u32                     miss;
        u32                     limit;

        struct dentry          *fsize;
        struct dentry          *fcur;
        struct dentry          *fmiss;
        struct dentry          *flimit;

        struct mlx5_ib_dev     *dev;
        struct work_struct      work;
        struct delayed_work     dwork;
        int                     pending;
};

struct mlx5_mr_cache {
        struct workqueue_struct *wq;
        struct mlx5_cache_ent   ent[MAX_MR_CACHE_ENTRIES];
        int                     stopped;
        struct dentry           *root;
        unsigned long           last_add;
};

struct mlx5_ib_gsi_qp;

struct mlx5_ib_port_resources {
        struct mlx5_ib_resources *devr;
        struct mlx5_ib_gsi_qp *gsi;
        struct work_struct pkey_change_work;
};

struct mlx5_ib_resources {
        struct ib_cq    *c0;
        struct ib_xrcd  *x0;
        struct ib_xrcd  *x1;
        struct ib_pd    *p0;
        struct ib_srq   *s0;
        struct ib_srq   *s1;
        struct mlx5_ib_port_resources ports[2];
        /* Protects changes to the port resources */
        struct mutex    mutex;
};

struct mlx5_ib_port {
        u16 q_cnt_id;
};

struct mlx5_roce {
        /* Protect mlx5_ib_get_netdev from invoking dev_hold() with a NULL
         * netdev pointer
         */
        rwlock_t                netdev_lock;
        struct net_device       *netdev;
        struct notifier_block   nb;
};

struct mlx5_ib_dev {
        struct ib_device                ib_dev;
        struct mlx5_core_dev            *mdev;
        struct mlx5_roce                roce;
        MLX5_DECLARE_DOORBELL_LOCK(uar_lock);
        int                             num_ports;
        /* serialize update of capability mask
         */
        struct mutex                    cap_mask_mutex;
        bool                            ib_active;
        struct umr_common               umrc;
        /* sync used page count stats
         */
        struct mlx5_ib_resources        devr;
        struct mlx5_mr_cache            cache;
        struct timer_list               delay_timer;
        int                             fill_delay;
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
        struct ib_odp_caps      odp_caps;
        /*
         * Sleepable RCU that prevents destruction of MRs while they are still
         * being used by a page fault handler.
         */
        struct srcu_struct      mr_srcu;
#endif
        struct mlx5_ib_flow_db  flow_db;
        /* protect resources needed as part of reset flow */
        spinlock_t              reset_flow_resource_lock;
        struct list_head        qp_list;
        /* Array with num_ports elements */
        struct mlx5_ib_port     *port;
};

static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
{
        return container_of(mcq, struct mlx5_ib_cq, mcq);
}

static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
{
        return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
}

static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
{
        return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
}

static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
{
        return container_of(ibcq, struct mlx5_ib_cq, ibcq);
}

static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
{
        return container_of(mqp, struct mlx5_ib_qp_base, mqp)->container_mibqp;
}

static inline struct mlx5_ib_mr *to_mibmr(struct mlx5_core_mkey *mmkey)
{
        return container_of(mmkey, struct mlx5_ib_mr, mmkey);
}

static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
{
        return container_of(ibpd, struct mlx5_ib_pd, ibpd);
}

static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
{
        return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
}

static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
{
        return container_of(ibqp, struct mlx5_ib_qp, ibqp);
}

static inline struct mlx5_ib_rwq *to_mrwq(struct ib_wq *ibwq)
{
        return container_of(ibwq, struct mlx5_ib_rwq, ibwq);
}

static inline struct mlx5_ib_rwq_ind_table *to_mrwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
{
        return container_of(ib_rwq_ind_tbl, struct mlx5_ib_rwq_ind_table, ib_rwq_ind_tbl);
}

static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
{
        return container_of(msrq, struct mlx5_ib_srq, msrq);
}

static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
{
        return container_of(ibmr, struct mlx5_ib_mr, ibmr);
}

static inline struct mlx5_ib_mw *to_mmw(struct ib_mw *ibmw)
{
        return container_of(ibmw, struct mlx5_ib_mw, ibmw);
}

struct mlx5_ib_ah {
        struct ib_ah            ibah;
        struct mlx5_av          av;
};

static inline struct mlx5_ib_ah *to_mah(struct ib_ah *ibah)
{
        return container_of(ibah, struct mlx5_ib_ah, ibah);
}

int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
                        struct mlx5_db *db);
void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
int mlx5_MAD_IFC(struct mlx5_ib_dev *dev, int ignore_mkey, int ignore_bkey,
                 u8 port, const struct ib_wc *in_wc, const struct ib_grh *in_grh,
                 const void *in_mad, void *response_mad);
struct ib_ah *mlx5_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
int mlx5_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
int mlx5_ib_destroy_ah(struct ib_ah *ah);
struct ib_srq *mlx5_ib_create_srq(struct ib_pd *pd,
                                  struct ib_srq_init_attr *init_attr,
                                  struct ib_udata *udata);
int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
                       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
int mlx5_ib_destroy_srq(struct ib_srq *srq);
int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
                          struct ib_recv_wr **bad_wr);
struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
                                struct ib_qp_init_attr *init_attr,
                                struct ib_udata *udata);
int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
                      int attr_mask, struct ib_udata *udata);
int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
                     struct ib_qp_init_attr *qp_init_attr);
int mlx5_ib_destroy_qp(struct ib_qp *qp);
int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                      struct ib_send_wr **bad_wr);
int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
                      struct ib_recv_wr **bad_wr);
void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n);
int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
                          void *buffer, u32 length,
                          struct mlx5_ib_qp_base *base);
struct ib_cq *mlx5_ib_create_cq(struct ib_device *ibdev,
                                const struct ib_cq_init_attr *attr,
                                struct ib_ucontext *context,
                                struct ib_udata *udata);
int mlx5_ib_destroy_cq(struct ib_cq *cq);
int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
                                  u64 virt_addr, int access_flags,
                                  struct ib_udata *udata);
struct ib_mw *mlx5_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type,
                               struct ib_udata *udata);
int mlx5_ib_dealloc_mw(struct ib_mw *mw);
int mlx5_ib_update_mtt(struct mlx5_ib_mr *mr, u64 start_page_index,
                       int npages, int zap);
int mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
                          u64 length, u64 virt_addr, int access_flags,
                          struct ib_pd *pd, struct ib_udata *udata);
int mlx5_ib_dereg_mr(struct ib_mr *ibmr);
struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd,
                               enum ib_mr_type mr_type,
                               u32 max_num_sg);
int mlx5_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
                      unsigned int *sg_offset);
int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
                        const struct ib_wc *in_wc, const struct ib_grh *in_grh,
                        const struct ib_mad_hdr *in, size_t in_mad_size,
                        struct ib_mad_hdr *out, size_t *out_mad_size,
                        u16 *out_mad_pkey_index);
struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
                                          struct ib_ucontext *context,
                                          struct ib_udata *udata);
int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd);
int mlx5_ib_get_buf_offset(u64 addr, int page_shift, u32 *offset);
int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, u8 port);
int mlx5_query_mad_ifc_smp_attr_node_info(struct ib_device *ibdev,
                                          struct ib_smp *out_mad);
int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
                                         __be64 *sys_image_guid);
int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
                                 u16 *max_pkeys);
int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
                                 u32 *vendor_id);
int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc);
int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid);
int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u8 port, u16 index,
                            u16 *pkey);
int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u8 port, int index,
                            union ib_gid *gid);
int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u8 port,
                            struct ib_port_attr *props);
int mlx5_ib_query_port(struct ib_device *ibdev, u8 port,
                       struct ib_port_attr *props);
int mlx5_ib_init_fmr(struct mlx5_ib_dev *dev);
void mlx5_ib_cleanup_fmr(struct mlx5_ib_dev *dev);
void mlx5_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift,
                        int *ncont, int *order);
void __mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
                            int page_shift, size_t offset, size_t num_pages,
                            __be64 *pas, int access_flags);
void mlx5_ib_populate_pas(struct mlx5_ib_dev *dev, struct ib_umem *umem,
                          int page_shift, __be64 *pas, int access_flags);
void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
int mlx5_ib_get_cqe_size(struct mlx5_ib_dev *dev, struct ib_cq *ibcq);
int mlx5_mr_cache_init(struct mlx5_ib_dev *dev);
int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev);
int mlx5_mr_ib_cont_pages(struct ib_umem *umem, u64 addr, int *count, int *shift);
int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
                            struct ib_mr_status *mr_status);
struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
                                struct ib_wq_init_attr *init_attr,
                                struct ib_udata *udata);
int mlx5_ib_destroy_wq(struct ib_wq *wq);
int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
                      u32 wq_attr_mask, struct ib_udata *udata);
struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
                                                      struct ib_rwq_ind_table_init_attr *init_attr,
                                                      struct ib_udata *udata);
int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);

#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
extern struct workqueue_struct *mlx5_ib_page_fault_wq;

void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev);
void mlx5_ib_mr_pfault_handler(struct mlx5_ib_qp *qp,
                               struct mlx5_ib_pfault *pfault);
void mlx5_ib_odp_create_qp(struct mlx5_ib_qp *qp);
int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev);
void mlx5_ib_odp_remove_one(struct mlx5_ib_dev *ibdev);
int __init mlx5_ib_odp_init(void);
void mlx5_ib_odp_cleanup(void);
void mlx5_ib_qp_disable_pagefaults(struct mlx5_ib_qp *qp);
void mlx5_ib_qp_enable_pagefaults(struct mlx5_ib_qp *qp);
void mlx5_ib_invalidate_range(struct ib_umem *umem, unsigned long start,
                              unsigned long end);
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
static inline void mlx5_ib_internal_fill_odp_caps(struct mlx5_ib_dev *dev)
{
        return;
}

static inline void mlx5_ib_odp_create_qp(struct mlx5_ib_qp *qp)         {}
static inline int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev) { return 0; }
static inline void mlx5_ib_odp_remove_one(struct mlx5_ib_dev *ibdev)    {}
static inline int mlx5_ib_odp_init(void) { return 0; }
static inline void mlx5_ib_odp_cleanup(void)                            {}
static inline void mlx5_ib_qp_disable_pagefaults(struct mlx5_ib_qp *qp) {}
static inline void mlx5_ib_qp_enable_pagefaults(struct mlx5_ib_qp *qp)  {}

#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */

int mlx5_ib_get_vf_config(struct ib_device *device, int vf,
                          u8 port, struct ifla_vf_info *info);
int mlx5_ib_set_vf_link_state(struct ib_device *device, int vf,
                              u8 port, int state);
int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
                         u8 port, struct ifla_vf_stats *stats);
int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u8 port,
                        u64 guid, int type);

__be16 mlx5_get_roce_udp_sport(struct mlx5_ib_dev *dev, u8 port_num,
                               int index);

/* GSI QP helper functions */
struct ib_qp *mlx5_ib_gsi_create_qp(struct ib_pd *pd,
                                    struct ib_qp_init_attr *init_attr);
int mlx5_ib_gsi_destroy_qp(struct ib_qp *qp);
int mlx5_ib_gsi_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
                          int attr_mask);
int mlx5_ib_gsi_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
                         int qp_attr_mask,
                         struct ib_qp_init_attr *qp_init_attr);
int mlx5_ib_gsi_post_send(struct ib_qp *qp, struct ib_send_wr *wr,
                          struct ib_send_wr **bad_wr);
int mlx5_ib_gsi_post_recv(struct ib_qp *qp, struct ib_recv_wr *wr,
                          struct ib_recv_wr **bad_wr);
void mlx5_ib_gsi_pkey_change(struct mlx5_ib_gsi_qp *gsi);

int mlx5_ib_generate_wc(struct ib_cq *ibcq, struct ib_wc *wc);

static inline void init_query_mad(struct ib_smp *mad)
{
        mad->base_version  = 1;
        mad->mgmt_class    = IB_MGMT_CLASS_SUBN_LID_ROUTED;
        mad->class_version = 1;
        mad->method        = IB_MGMT_METHOD_GET;
}

static inline u8 convert_access(int acc)
{
        return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
               (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
               (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
               (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
               MLX5_PERM_LOCAL_READ;
}

static inline int is_qp1(enum ib_qp_type qp_type)
{
        return qp_type == MLX5_IB_QPT_HW_GSI;
}

#define MLX5_MAX_UMR_SHIFT 16
#define MLX5_MAX_UMR_PAGES (1 << MLX5_MAX_UMR_SHIFT)

static inline u32 check_cq_create_flags(u32 flags)
{
        /*
         * It returns non-zero value for unsupported CQ
         * create flags, otherwise it returns zero.
         */
        return (flags & ~(IB_CQ_FLAGS_IGNORE_OVERRUN |
                          IB_CQ_FLAGS_TIMESTAMP_COMPLETION));
}

static inline int verify_assign_uidx(u8 cqe_version, u32 cmd_uidx,
                                     u32 *user_index)
{
        if (cqe_version) {
                if ((cmd_uidx == MLX5_IB_DEFAULT_UIDX) ||
                    (cmd_uidx & ~MLX5_USER_ASSIGNED_UIDX_MASK))
                        return -EINVAL;
                *user_index = cmd_uidx;
        } else {
                *user_index = MLX5_IB_DEFAULT_UIDX;
        }

        return 0;
}
#endif /* MLX5_IB_H */