LXR linux/drivers/infiniband/hw/usnic/usnic

   1/*
   2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 *
  32 */
  33
  34#ifndef USNIC_IB_H_
  35#define USNIC_IB_H_
  36
  37#include <linux/iommu.h>
  38#include <linux/netdevice.h>
  39
  40#include <rdma/ib_verbs.h>
  41
  42
  43#include "usnic.h"
  44#include "usnic_abi.h"
  45#include "usnic_vnic.h"
  46
  47#define USNIC_IB_PORT_CNT               1
  48#define USNIC_IB_NUM_COMP_VECTORS       1
  49
  50extern unsigned int usnic_ib_share_vf;
  51
  52struct usnic_ib_ucontext {
  53        struct ib_ucontext              ibucontext;
  54        /* Protected by usnic_ib_dev->usdev_lock */
  55        struct list_head                qp_grp_list;
  56        struct list_head                link;
  57};
  58
  59struct usnic_ib_pd {
  60        struct ib_pd                    ibpd;
  61        struct usnic_uiom_pd            *umem_pd;
  62};
  63
  64struct usnic_ib_mr {
  65        struct ib_mr                    ibmr;
  66        struct usnic_uiom_reg           *umem;
  67};
  68
  69struct usnic_ib_dev {
  70        struct ib_device                ib_dev;
  71        struct pci_dev                  *pdev;
  72        struct net_device               *netdev;
  73        struct usnic_fwd_dev            *ufdev;
  74        struct list_head                ib_dev_link;
  75        struct list_head                vf_dev_list;
  76        struct list_head                ctx_list;
  77        struct mutex                    usdev_lock;
  78
  79        /* provisioning information */
  80        struct kref                     vf_cnt;
  81        unsigned int                    vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];
  82
  83        /* sysfs vars for QPN reporting */
  84        struct kobject *qpn_kobj;
  85};
  86
  87struct usnic_ib_vf {
  88        struct usnic_ib_dev             *pf;
  89        spinlock_t                      lock;
  90        struct usnic_vnic               *vnic;
  91        unsigned int                    qp_grp_ref_cnt;
  92        struct usnic_ib_pd              *pd;
  93        struct list_head                link;
  94};
  95
  96static inline
  97struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
  98{
  99        return container_of(ibdev, struct usnic_ib_dev, ib_dev);
 100}
 101
 102static inline
 103struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
 104{
 105        return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 106}
 107
 108static inline
 109struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
 110{
 111        return container_of(ibpd, struct usnic_ib_pd, ibpd);
 112}
 113
 114static inline
 115struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
 116{
 117        return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 118}
 119
 120static inline
 121struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
 122{
 123        return container_of(ibmr, struct usnic_ib_mr, ibmr);
 124}
 125void usnic_ib_log_vf(struct usnic_ib_vf *vf);
 126
 127#define UPDATE_PTR_LEFT(N, P, L)                        \
 128do {                                                    \
 129        L -= (N);                                       \
 130        P += (N);                                       \
 131} while (0)
 132
 133#endif /* USNIC_IB_H_ */
 134