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 #include <linux/version.h>
  25
  26 #include <rdma/ib_verbs.h>
  27
  28
  29 #include "usnic.h"
  30 #include "usnic_abi.h"
  31 #include "usnic_vnic.h"
  32
  33 #define USNIC_IB_PORT_CNT               1
  34 #define USNIC_IB_NUM_COMP_VECTORS       1
  35
  36 extern unsigned int usnic_ib_share_vf;
  37
  38 struct usnic_ib_ucontext {
  39         struct ib_ucontext              ibucontext;
  40         /* Protected by usnic_ib_dev->usdev_lock */
  41         struct list_head                qp_grp_list;
  42         struct list_head                link;
  43 };
  44
  45 struct usnic_ib_pd {
  46         struct ib_pd                    ibpd;
  47         struct usnic_uiom_pd            *umem_pd;
  48 };
  49
  50 struct usnic_ib_mr {
  51         struct ib_mr                    ibmr;
  52         struct usnic_uiom_reg           *umem;
  53 };
  54
  55 struct usnic_ib_dev {
  56         struct ib_device                ib_dev;
  57         struct pci_dev                  *pdev;
  58         struct net_device               *netdev;
  59         struct usnic_fwd_dev            *ufdev;
  60         struct list_head                ib_dev_link;
  61         struct list_head                vf_dev_list;
  62         struct list_head                ctx_list;
  63         struct mutex                    usdev_lock;
  64
  65         /* provisioning information */
  66         struct kref                     vf_cnt;
  67         unsigned int                    vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];
  68
  69         /* sysfs vars for QPN reporting */
  70         struct kobject *qpn_kobj;
  71 };
  72
  73 struct usnic_ib_vf {
  74         struct usnic_ib_dev             *pf;
  75         spinlock_t                      lock;
  76         struct usnic_vnic               *vnic;
  77         unsigned int                    qp_grp_ref_cnt;
  78         struct usnic_ib_pd              *pd;
  79         struct list_head                link;
  80 };
  81
  82 static inline
  83 struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
  84 {
  85         return container_of(ibdev, struct usnic_ib_dev, ib_dev);
  86 }
  87
  88 static inline
  89 struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
  90 {
  91         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
  92 }
  93
  94 static inline
  95 struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
  96 {
  97         return container_of(ibpd, struct usnic_ib_pd, ibpd);
  98 }
  99
 100 static inline
 101 struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
 102 {
 103         return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
 104 }
 105
 106 static inline
 107 struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
 108 {
 109         return container_of(ibmr, struct usnic_ib_mr, ibmr);
 110 }
 111 void usnic_ib_log_vf(struct usnic_ib_vf *vf);
 112
 113 #define UPDATE_PTR_LEFT(N, P, L)                        \
 114 do {                                                    \
 115         L -= (N);                                       \
 116         P += (N);                                       \
 117 } while (0)
 118
 119 #endif /* USNIC_IB_H_ */