1 /**************************************************************************
2
3 Copyright (c) 2007, 2008 Chelsio Inc.
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
11
12 2. Neither the name of the Chelsio Corporation nor the names of its
13 contributors may be used to endorse or promote products derived from
14 this software without specific prior written permission.
15
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 POSSIBILITY OF SUCH DAMAGE.
27
28 $FreeBSD: stable/9/sys/dev/cxgb/ulp/iw_cxgb/iw_cxgb.h 237920 2012-07-01 12:00:36Z np $
29
30 ***************************************************************************/
31
32 #ifndef __IWCH_H__
33 #define __IWCH_H__
34
35 struct iwch_pd;
36 struct iwch_cq;
37 struct iwch_qp;
38 struct iwch_mr;
39
40 enum t3ctype {
41 T3A = 0,
42 T3B,
43 T3C
44 };
45
46 #define PAGE_MASK_IWARP (~(PAGE_SIZE-1))
47
48 struct iwch_rnic_attributes {
49 u32 vendor_id;
50 u32 vendor_part_id;
51 u32 max_qps;
52 u32 max_wrs; /* Max for any SQ/RQ */
53 u32 max_sge_per_wr;
54 u32 max_sge_per_rdma_write_wr; /* for RDMA Write WR */
55 u32 max_cqs;
56 u32 max_cqes_per_cq;
57 u32 max_mem_regs;
58 u32 max_phys_buf_entries; /* for phys buf list */
59 u32 max_pds;
60
61 /*
62 * The memory page sizes supported by this RNIC.
63 * Bit position i in bitmap indicates page of
64 * size (4k)^i. Phys block list mode unsupported.
65 */
66 u32 mem_pgsizes_bitmask;
67 u64 max_mr_size;
68 u8 can_resize_wq;
69
70 /*
71 * The maximum number of RDMA Reads that can be outstanding
72 * per QP with this RNIC as the target.
73 */
74 u32 max_rdma_reads_per_qp;
75
76 /*
77 * The maximum number of resources used for RDMA Reads
78 * by this RNIC with this RNIC as the target.
79 */
80 u32 max_rdma_read_resources;
81
82 /*
83 * The max depth per QP for initiation of RDMA Read
84 * by this RNIC.
85 */
86 u32 max_rdma_read_qp_depth;
87
88 /*
89 * The maximum depth for initiation of RDMA Read
90 * operations by this RNIC on all QPs
91 */
92 u32 max_rdma_read_depth;
93 u8 rq_overflow_handled;
94 u32 can_modify_ird;
95 u32 can_modify_ord;
96 u32 max_mem_windows;
97 u32 stag0_value;
98 u8 zbva_support;
99 u8 local_invalidate_fence;
100 u32 cq_overflow_detection;
101 };
102
103 struct iwch_dev {
104 struct ib_device ibdev;
105 struct cxio_rdev rdev;
106 u32 device_cap_flags;
107 struct iwch_rnic_attributes attr;
108 struct idr cqidr;
109 struct idr qpidr;
110 struct idr mmidr;
111 struct mtx lock;
112 TAILQ_ENTRY(iwch_dev) entry;
113 };
114
115 #ifndef container_of
116 #define container_of(p, stype, field) ((stype *)(((uint8_t *)(p)) - offsetof(stype, field)))
117 #endif
118
to_iwch_dev(struct ib_device * ibdev)119 static inline struct iwch_dev *to_iwch_dev(struct ib_device *ibdev)
120 {
121 return container_of(ibdev, struct iwch_dev, ibdev);
122 }
123
t3b_device(const struct iwch_dev * rhp __unused)124 static inline int t3b_device(const struct iwch_dev *rhp __unused)
125 {
126 return (0);
127 }
128
t3a_device(const struct iwch_dev * rhp __unused)129 static inline int t3a_device(const struct iwch_dev *rhp __unused)
130 {
131 return (0);
132 }
133
get_chp(struct iwch_dev * rhp,u32 cqid)134 static inline struct iwch_cq *get_chp(struct iwch_dev *rhp, u32 cqid)
135 {
136 return idr_find(&rhp->cqidr, cqid);
137 }
138
get_qhp(struct iwch_dev * rhp,u32 qpid)139 static inline struct iwch_qp *get_qhp(struct iwch_dev *rhp, u32 qpid)
140 {
141 return idr_find(&rhp->qpidr, qpid);
142 }
143
get_mhp(struct iwch_dev * rhp,u32 mmid)144 static inline struct iwch_mr *get_mhp(struct iwch_dev *rhp, u32 mmid)
145 {
146 return idr_find(&rhp->mmidr, mmid);
147 }
148
insert_handle(struct iwch_dev * rhp,struct idr * idr,void * handle,u32 id)149 static inline int insert_handle(struct iwch_dev *rhp, struct idr *idr,
150 void *handle, u32 id)
151 {
152 int ret;
153 u32 newid;
154
155 do {
156 if (!idr_pre_get(idr, GFP_KERNEL)) {
157 return -ENOMEM;
158 }
159 mtx_lock(&rhp->lock);
160 ret = idr_get_new_above(idr, handle, id, &newid);
161 WARN_ON(ret != 0);
162 WARN_ON(!ret && newid != id);
163 mtx_unlock(&rhp->lock);
164 } while (ret == -EAGAIN);
165
166 return ret;
167 }
168
remove_handle(struct iwch_dev * rhp,struct idr * idr,u32 id)169 static inline void remove_handle(struct iwch_dev *rhp, struct idr *idr, u32 id)
170 {
171 mtx_lock(&rhp->lock);
172 idr_remove(idr, id);
173 mtx_unlock(&rhp->lock);
174 }
175
176 void iwch_ev_dispatch(struct iwch_dev *, struct mbuf *);
177 #endif
178