/*
 * Copyright (c) 2013, Cisco Systems, Inc. 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
 * 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 USNIC_IB_H_
#define USNIC_IB_H_

#include <linux/iommu.h>
#include <linux/netdevice.h>

#include <rdma/ib_verbs.h>


#include "usnic.h"
#include "usnic_abi.h"
#include "usnic_vnic.h"

#define USNIC_IB_PORT_CNT               1
#define USNIC_IB_NUM_COMP_VECTORS       1

extern unsigned int usnic_ib_share_vf;

struct usnic_ib_ucontext {
        struct ib_ucontext              ibucontext;
        /* Protected by usnic_ib_dev->usdev_lock */
        struct list_head                qp_grp_list;
        struct list_head                link;
};

struct usnic_ib_pd {
        struct ib_pd                    ibpd;
        struct usnic_uiom_pd            *umem_pd;
};

struct usnic_ib_cq {
        struct ib_cq                    ibcq;
};

struct usnic_ib_mr {
        struct ib_mr                    ibmr;
        struct usnic_uiom_reg           *umem;
};

struct usnic_ib_dev {
        struct ib_device                ib_dev;
        struct pci_dev                  *pdev;
        struct net_device               *netdev;
        struct usnic_fwd_dev            *ufdev;
        struct list_head                ib_dev_link;
        struct list_head                vf_dev_list;
        struct list_head                ctx_list;
        struct mutex                    usdev_lock;

        /* provisioning information */
        struct kref                     vf_cnt;
        unsigned int                    vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];

        /* sysfs vars for QPN reporting */
        struct kobject *qpn_kobj;
};

struct usnic_ib_vf {
        struct usnic_ib_dev             *pf;
        struct mutex                    lock;
        struct usnic_vnic               *vnic;
        unsigned int                    qp_grp_ref_cnt;
        struct usnic_ib_pd              *pd;
        struct list_head                link;
};

static inline
struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
{
        return container_of(ibdev, struct usnic_ib_dev, ib_dev);
}

static inline
struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
{
        return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
}

static inline
struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
{
        return container_of(ibpd, struct usnic_ib_pd, ibpd);
}

static inline
struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
{
        return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
}

static inline
struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
{
        return container_of(ibmr, struct usnic_ib_mr, ibmr);
}
void usnic_ib_log_vf(struct usnic_ib_vf *vf);

#define UPDATE_PTR_LEFT(N, P, L)                        \
do {                                                    \
        L -= (N);                                       \
        P += (N);                                       \
} while (0)

#endif /* USNIC_IB_H_ */