IPoIB: Add LSO support
[deliverable/linux.git] / drivers / infiniband / hw / mlx4 / mlx4_ib.h
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1/*
2 * Copyright (c) 2006, 2007 Cisco Systems. 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 * OpenIB.org 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#ifndef MLX4_IB_H
34#define MLX4_IB_H
35
36#include <linux/compiler.h>
37#include <linux/list.h>
63019d93 38#include <linux/mutex.h>
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39
40#include <rdma/ib_verbs.h>
41#include <rdma/ib_umem.h>
42
43#include <linux/mlx4/device.h>
44#include <linux/mlx4/doorbell.h>
45
46enum {
47 MLX4_IB_DB_PER_PAGE = PAGE_SIZE / 4
48};
49
50struct mlx4_ib_db_pgdir;
51struct mlx4_ib_user_db_page;
52
53struct mlx4_ib_db {
54 __be32 *db;
55 union {
56 struct mlx4_ib_db_pgdir *pgdir;
57 struct mlx4_ib_user_db_page *user_page;
58 } u;
59 dma_addr_t dma;
60 int index;
61 int order;
62};
63
64struct mlx4_ib_ucontext {
65 struct ib_ucontext ibucontext;
66 struct mlx4_uar uar;
67 struct list_head db_page_list;
68 struct mutex db_page_mutex;
69};
70
71struct mlx4_ib_pd {
72 struct ib_pd ibpd;
73 u32 pdn;
74};
75
76struct mlx4_ib_cq_buf {
77 struct mlx4_buf buf;
78 struct mlx4_mtt mtt;
79};
80
81struct mlx4_ib_cq {
82 struct ib_cq ibcq;
83 struct mlx4_cq mcq;
84 struct mlx4_ib_cq_buf buf;
85 struct mlx4_ib_db db;
86 spinlock_t lock;
87 struct ib_umem *umem;
88};
89
90struct mlx4_ib_mr {
91 struct ib_mr ibmr;
92 struct mlx4_mr mmr;
93 struct ib_umem *umem;
94};
95
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96struct mlx4_ib_fmr {
97 struct ib_fmr ibfmr;
98 struct mlx4_fmr mfmr;
99};
100
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101struct mlx4_ib_wq {
102 u64 *wrid;
103 spinlock_t lock;
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104 int wqe_cnt;
105 int max_post;
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106 int max_gs;
107 int offset;
108 int wqe_shift;
109 unsigned head;
110 unsigned tail;
111};
112
113struct mlx4_ib_qp {
114 struct ib_qp ibqp;
115 struct mlx4_qp mqp;
116 struct mlx4_buf buf;
117
118 struct mlx4_ib_db db;
119 struct mlx4_ib_wq rq;
120
121 u32 doorbell_qpn;
122 __be32 sq_signal_bits;
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123 unsigned sq_next_wqe;
124 int sq_max_wqes_per_wr;
0e6e7416 125 int sq_spare_wqes;
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126 struct mlx4_ib_wq sq;
127
128 struct ib_umem *umem;
129 struct mlx4_mtt mtt;
130 int buf_size;
131 struct mutex mutex;
132 u8 port;
133 u8 alt_port;
134 u8 atomic_rd_en;
135 u8 resp_depth;
0e6e7416 136 u8 sq_no_prefetch;
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137 u8 state;
138};
139
140struct mlx4_ib_srq {
141 struct ib_srq ibsrq;
142 struct mlx4_srq msrq;
143 struct mlx4_buf buf;
144 struct mlx4_ib_db db;
145 u64 *wrid;
146 spinlock_t lock;
147 int head;
148 int tail;
149 u16 wqe_ctr;
150 struct ib_umem *umem;
151 struct mlx4_mtt mtt;
152 struct mutex mutex;
153};
154
155struct mlx4_ib_ah {
156 struct ib_ah ibah;
157 struct mlx4_av av;
158};
159
160struct mlx4_ib_dev {
161 struct ib_device ib_dev;
162 struct mlx4_dev *dev;
163 void __iomem *uar_map;
164
165 struct list_head pgdir_list;
166 struct mutex pgdir_mutex;
167
168 struct mlx4_uar priv_uar;
169 u32 priv_pdn;
170 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
171
172 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
173 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
174 spinlock_t sm_lock;
175
176 struct mutex cap_mask_mutex;
177};
178
179static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
180{
181 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
182}
183
184static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
185{
186 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
187}
188
189static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
190{
191 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
192}
193
194static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
195{
196 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
197}
198
199static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
200{
201 return container_of(mcq, struct mlx4_ib_cq, mcq);
202}
203
204static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
205{
206 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
207}
208
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209static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
210{
211 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
212}
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213static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
214{
215 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
216}
217
218static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
219{
220 return container_of(mqp, struct mlx4_ib_qp, mqp);
221}
222
223static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
224{
225 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
226}
227
228static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
229{
230 return container_of(msrq, struct mlx4_ib_srq, msrq);
231}
232
233static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
234{
235 return container_of(ibah, struct mlx4_ib_ah, ibah);
236}
237
238int mlx4_ib_db_alloc(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db, int order);
239void mlx4_ib_db_free(struct mlx4_ib_dev *dev, struct mlx4_ib_db *db);
240int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
241 struct mlx4_ib_db *db);
242void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_ib_db *db);
243
244struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
245int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
246 struct ib_umem *umem);
247struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
248 u64 virt_addr, int access_flags,
249 struct ib_udata *udata);
250int mlx4_ib_dereg_mr(struct ib_mr *mr);
251
252struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
253 struct ib_ucontext *context,
254 struct ib_udata *udata);
255int mlx4_ib_destroy_cq(struct ib_cq *cq);
256int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
257int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
258void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
259void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
260
261struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
262int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
263int mlx4_ib_destroy_ah(struct ib_ah *ah);
264
265struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
266 struct ib_srq_init_attr *init_attr,
267 struct ib_udata *udata);
268int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
269 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
65541cb7 270int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
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271int mlx4_ib_destroy_srq(struct ib_srq *srq);
272void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
273int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
274 struct ib_recv_wr **bad_wr);
275
276struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
277 struct ib_qp_init_attr *init_attr,
278 struct ib_udata *udata);
279int mlx4_ib_destroy_qp(struct ib_qp *qp);
280int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
281 int attr_mask, struct ib_udata *udata);
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282int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
283 struct ib_qp_init_attr *qp_init_attr);
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284int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
285 struct ib_send_wr **bad_wr);
286int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
287 struct ib_recv_wr **bad_wr);
288
289int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
290 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
291 void *in_mad, void *response_mad);
292int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
293 struct ib_wc *in_wc, struct ib_grh *in_grh,
294 struct ib_mad *in_mad, struct ib_mad *out_mad);
295int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
296void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
297
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298struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
299 struct ib_fmr_attr *fmr_attr);
300int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
301 u64 iova);
302int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
303int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
304
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305static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
306{
307 return !!(ah->av.g_slid & 0x80);
308}
309
310#endif /* MLX4_IB_H */
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