drivers/infiniband/hw/usnic/usnic_ib.h

   1 /*
   2  * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
   3  *
   4  * This program is free software; you may redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15  * SOFTWARE.
  16  *
  17  */
  18
  19 #ifndef USNIC_IB_H_
  20 #define USNIC_IB_H_
  21
  22 #include <linux/iommu.h>
  23 #include <linux/netdevice.h>
  24
  25 #include <rdma/ib_verbs.h>
  26
  27
  28 #include "usnic.h"
  29 #include "usnic_abi.h"
  30 #include "usnic_vnic.h"
  31
  32 #define USNIC_IB_PORT_CNT               1
  33 #define USNIC_IB_NUM_COMP_VECTORS       1
  34
  35 extern unsigned int usnic_ib_share_vf;
  36
  37 struct usnic_ib_ucontext {
  38         struct ib_ucontext              ibucontext;
  39         /* Protected by usnic_ib_dev->usdev_lock */
  40         struct list_head                qp_grp_list;
  41         struct list_head                link;
  42 };
  43
  44 struct usnic_ib_pd {
  45         struct ib_pd                    ibpd;
  46         struct usnic_uiom_pd            *umem_pd;
  47 };
  48
  49 struct usnic_ib_mr {
  50         struct ib_mr                    ibmr;
  51         struct usnic_uiom_reg           *umem;
  52 };
  53
  54 struct usnic_ib_dev {
  55         struct ib_device                ib_dev;
  56         struct pci_dev                  *pdev;
  57         struct net_device               *netdev;
  58         struct usnic_fwd_dev            *ufdev;
  59         struct list_head                ib_dev_link;
  60         struct list_head                vf_dev_list;
  61         struct list_head                ctx_list;
  62         struct mutex                    usdev_lock;
  63
  64         /* provisioning information */
  65         struct kref                     vf_cnt;
  66         unsigned int                    vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];
  67
  68         /* sysfs vars for QPN reporting */
  69         struct kobject *qpn_kobj;
  70 };
  71
  72 struct usnic_ib_vf {
  73         struct usnic_ib_dev             *pf;
  74         spinlock_t                      lock;
  75         struct usnic_vnic               *vnic;
  76         unsigned int                    qp_grp_ref_cnt;
  77         struct usnic_ib_pd              *pd;
  78         struct list_head                link;
  79 };
  80
  81 static inline
  82 struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
  83 {
  84         return container_of(ibdev, struct usnic_ib_dev, ib_dev);
  85 }
  86
  87 static inline
  88 struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
  89 {
  90         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
  91 }
  92
  93 static inline
  94 struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
  95 {
  96         return container_of(ibpd, struct usnic_ib_pd, ibpd);
  97 }
  98
  99 static inline
 100 struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
 101 {
 102         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 103 }
 104
 105 static inline
 106 struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
 107 {
 108         return container_of(ibmr, struct usnic_ib_mr, ibmr);
 109 }
 110 void usnic_ib_log_vf(struct usnic_ib_vf *vf);
 111
 112 #define UPDATE_PTR_LEFT(N, P, L)                        \
 113 do {                                                    \
 114         L -= (N);                                       \
 115         P += (N);                                       \
 116 } while (0)
 117
 118 #endif /* USNIC_IB_H_ */