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
35extern unsigned int usnic_ib_share_vf;
36
37struct 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
44struct usnic_ib_pd {
45	struct ib_pd			ibpd;
46	struct usnic_uiom_pd		*umem_pd;
47};
48
49struct usnic_ib_mr {
50	struct ib_mr			ibmr;
51	struct usnic_uiom_reg		*umem;
52};
53
54struct 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
72struct 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
81static inline
82struct usnic_ib_dev *to_usdev(struct ib_device *ibdev)
83{
84	return container_of(ibdev, struct usnic_ib_dev, ib_dev);
85}
86
87static inline
88struct usnic_ib_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
89{
90	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
91}
92
93static inline
94struct usnic_ib_pd *to_upd(struct ib_pd *ibpd)
95{
96	return container_of(ibpd, struct usnic_ib_pd, ibpd);
97}
98
99static inline
100struct usnic_ib_ucontext *to_uucontext(struct ib_ucontext *ibucontext)
101{
102	return container_of(ibucontext, struct usnic_ib_ucontext, ibucontext);
103}
104
105static inline
106struct usnic_ib_mr *to_umr(struct ib_mr *ibmr)
107{
108	return container_of(ibmr, struct usnic_ib_mr, ibmr);
109}
110void usnic_ib_log_vf(struct usnic_ib_vf *vf);
111
112#define UPDATE_PTR_LEFT(N, P, L)			\
113do {							\
114	L -= (N);					\
115	P += (N);					\
116} while (0)
117
118#endif /* USNIC_IB_H_ */
119