drivers/infiniband/hw/usnic/usnic_ib.h

   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
  50 extern unsigned int usnic_ib_share_vf;
  51
  52 struct 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
  59 struct usnic_ib_pd {
  60         struct ib_pd                    ibpd;
  61         struct usnic_uiom_pd            *umem_pd;
  62 };
  63
  64 struct usnic_ib_mr {
  65         struct ib_mr                    ibmr;
  66         struct usnic_uiom_reg           *umem;
  67 };
  68
  69 struct 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
  87 struct 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
  96 static inline
  97 struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
  98 {
  99         return container_of(ibdev, struct usnic_ib_dev, ib_dev);
 100 }
 101
 102 static inline
 103 struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
 104 {
 105         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 106 }
 107
 108 static inline
 109 struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
 110 {
 111         return container_of(ibpd, struct usnic_ib_pd, ibpd);
 112 }
 113
 114 static inline
 115 struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
 116 {
 117         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 118 }
 119
 120 static inline
 121 struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
 122 {
 123         return container_of(ibmr, struct usnic_ib_mr, ibmr);
 124 }
 125 void usnic_ib_log_vf(struct usnic_ib_vf *vf);
 126
 127 #define UPDATE_PTR_LEFT(N, P, L)                        \
 128 do {                                                    \
 129         L -= (N);                                       \
 130         P += (N);                                       \
 131 } while (0)
 132
 133 #endif /* USNIC_IB_H_ */