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_cq {
65 struct ib_cq ibcq;
66 };
67
68 struct usnic_ib_mr {
69 struct ib_mr ibmr;
70 struct usnic_uiom_reg *umem;
71 };
72
73 struct usnic_ib_dev {
74 struct ib_device ib_dev;
75 struct pci_dev *pdev;
76 struct net_device *netdev;
77 struct usnic_fwd_dev *ufdev;
78 struct list_head ib_dev_link;
79 struct list_head vf_dev_list;
80 struct list_head ctx_list;
81 struct mutex usdev_lock;
82
83 /* provisioning information */
84 struct kref vf_cnt;
85 unsigned int vf_res_cnt[USNIC_VNIC_RES_TYPE_MAX];
86
87 /* sysfs vars for QPN reporting */
88 struct kobject *qpn_kobj;
89 };
90
91 struct usnic_ib_vf {
92 struct usnic_ib_dev *pf;
93 struct mutex lock;
94 struct usnic_vnic *vnic;
95 unsigned int qp_grp_ref_cnt;
96 struct usnic_ib_pd *pd;
97 struct list_head link;
98 };
99
100 static inline
to_usdev(struct ib_device * ibdev)101 struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
102 {
103 return container_of(ibdev, struct usnic_ib_dev, ib_dev);
104 }
105
106 static inline
to_ucontext(struct ib_ucontext * ibucontext)107 struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
108 {
109 return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
110 }
111
112 static inline
to_upd(struct ib_pd * ibpd)113 struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
114 {
115 return container_of(ibpd, struct usnic_ib_pd, ibpd);
116 }
117
118 static inline
to_uucontext(struct ib_ucontext * ibucontext)119 struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
120 {
121 return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
122 }
123
124 static inline
to_umr(struct ib_mr * ibmr)125 struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
126 {
127 return container_of(ibmr, struct usnic_ib_mr, ibmr);
128 }
129 void usnic_ib_log_vf(struct usnic_ib_vf *vf);
130
131 #define UPDATE_PTR_LEFT(N, P, L) \
132 do { \
133 L -= (N); \
134 P += (N); \
135 } while (0)
136
137 #endif /* USNIC_IB_H_ */
138