1 /*
2 * Copyright (c) 2006, 2007 Cisco Systems. All rights reserved.
3 * Copyright (c) 2007, 2008 Mellanox Technologies. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34 #ifndef MLX4_IB_H
35 #define MLX4_IB_H
36
37 #include <linux/compiler.h>
38 #include <linux/list.h>
39 #include <linux/mutex.h>
40
41 #include <rdma/ib_verbs.h>
42 #include <rdma/ib_umem.h>
43
44 #include <linux/mlx4/device.h>
45 #include <linux/mlx4/doorbell.h>
46
47 struct mlx4_ib_ucontext {
48 struct ib_ucontext ibucontext;
49 struct mlx4_uar uar;
50 struct list_head db_page_list;
51 struct mutex db_page_mutex;
52 };
53
54 struct mlx4_ib_pd {
55 struct ib_pd ibpd;
56 u32 pdn;
57 };
58
59 struct mlx4_ib_xrcd {
60 struct ib_xrcd ibxrcd;
61 u32 xrcdn;
62 struct ib_pd *pd;
63 struct ib_cq *cq;
64 };
65
66 struct mlx4_ib_cq_buf {
67 struct mlx4_buf buf;
68 struct mlx4_mtt mtt;
69 };
70
71 struct mlx4_ib_cq_resize {
72 struct mlx4_ib_cq_buf buf;
73 int cqe;
74 };
75
76 struct mlx4_ib_cq {
77 struct ib_cq ibcq;
78 struct mlx4_cq mcq;
79 struct mlx4_ib_cq_buf buf;
80 struct mlx4_ib_cq_resize *resize_buf;
81 struct mlx4_db db;
82 spinlock_t lock;
83 struct mutex resize_mutex;
84 struct ib_umem *umem;
85 struct ib_umem *resize_umem;
86 };
87
88 struct mlx4_ib_mr {
89 struct ib_mr ibmr;
90 struct mlx4_mr mmr;
91 struct ib_umem *umem;
92 };
93
94 struct mlx4_ib_fast_reg_page_list {
95 struct ib_fast_reg_page_list ibfrpl;
96 __be64 *mapped_page_list;
97 dma_addr_t map;
98 };
99
100 struct mlx4_ib_fmr {
101 struct ib_fmr ibfmr;
102 struct mlx4_fmr mfmr;
103 };
104
105 struct mlx4_ib_wq {
106 u64 *wrid;
107 spinlock_t lock;
108 int wqe_cnt;
109 int max_post;
110 int max_gs;
111 int offset;
112 int wqe_shift;
113 unsigned head;
114 unsigned tail;
115 };
116
117 enum mlx4_ib_qp_flags {
118 MLX4_IB_QP_LSO = 1 << 0,
119 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
120 };
121
122 struct mlx4_ib_gid_entry {
123 struct list_head list;
124 union ib_gid gid;
125 int added;
126 u8 port;
127 };
128
129 struct mlx4_ib_qp {
130 struct ib_qp ibqp;
131 struct mlx4_qp mqp;
132 struct mlx4_buf buf;
133
134 struct mlx4_db db;
135 struct mlx4_ib_wq rq;
136
137 u32 doorbell_qpn;
138 __be32 sq_signal_bits;
139 unsigned sq_next_wqe;
140 int sq_max_wqes_per_wr;
141 int sq_spare_wqes;
142 struct mlx4_ib_wq sq;
143
144 struct ib_umem *umem;
145 struct mlx4_mtt mtt;
146 int buf_size;
147 struct mutex mutex;
148 u16 xrcdn;
149 u32 flags;
150 u8 port;
151 u8 alt_port;
152 u8 atomic_rd_en;
153 u8 resp_depth;
154 u8 sq_no_prefetch;
155 u8 state;
156 int mlx_type;
157 struct list_head gid_list;
158 };
159
160 struct mlx4_ib_srq {
161 struct ib_srq ibsrq;
162 struct mlx4_srq msrq;
163 struct mlx4_buf buf;
164 struct mlx4_db db;
165 u64 *wrid;
166 spinlock_t lock;
167 int head;
168 int tail;
169 u16 wqe_ctr;
170 struct ib_umem *umem;
171 struct mlx4_mtt mtt;
172 struct mutex mutex;
173 };
174
175 struct mlx4_ib_ah {
176 struct ib_ah ibah;
177 union mlx4_ext_av av;
178 };
179
180 struct mlx4_ib_iboe {
181 spinlock_t lock;
182 struct net_device *netdevs[MLX4_MAX_PORTS];
183 struct notifier_block nb;
184 union ib_gid gid_table[MLX4_MAX_PORTS][128];
185 };
186
187 struct mlx4_ib_dev {
188 struct ib_device ib_dev;
189 struct mlx4_dev *dev;
190 int num_ports;
191 void __iomem *uar_map;
192
193 struct mlx4_uar priv_uar;
194 u32 priv_pdn;
195 MLX4_DECLARE_DOORBELL_LOCK(uar_lock);
196
197 struct ib_mad_agent *send_agent[MLX4_MAX_PORTS][2];
198 struct ib_ah *sm_ah[MLX4_MAX_PORTS];
199 spinlock_t sm_lock;
200
201 struct mutex cap_mask_mutex;
202 bool ib_active;
203 struct mlx4_ib_iboe iboe;
204 int counters[MLX4_MAX_PORTS];
205 };
206
to_mdev(struct ib_device * ibdev)207 static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev)
208 {
209 return container_of(ibdev, struct mlx4_ib_dev, ib_dev);
210 }
211
to_mucontext(struct ib_ucontext * ibucontext)212 static inline struct mlx4_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
213 {
214 return container_of(ibucontext, struct mlx4_ib_ucontext, ibucontext);
215 }
216
to_mpd(struct ib_pd * ibpd)217 static inline struct mlx4_ib_pd *to_mpd(struct ib_pd *ibpd)
218 {
219 return container_of(ibpd, struct mlx4_ib_pd, ibpd);
220 }
221
to_mxrcd(struct ib_xrcd * ibxrcd)222 static inline struct mlx4_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
223 {
224 return container_of(ibxrcd, struct mlx4_ib_xrcd, ibxrcd);
225 }
226
to_mcq(struct ib_cq * ibcq)227 static inline struct mlx4_ib_cq *to_mcq(struct ib_cq *ibcq)
228 {
229 return container_of(ibcq, struct mlx4_ib_cq, ibcq);
230 }
231
to_mibcq(struct mlx4_cq * mcq)232 static inline struct mlx4_ib_cq *to_mibcq(struct mlx4_cq *mcq)
233 {
234 return container_of(mcq, struct mlx4_ib_cq, mcq);
235 }
236
to_mmr(struct ib_mr * ibmr)237 static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
238 {
239 return container_of(ibmr, struct mlx4_ib_mr, ibmr);
240 }
241
to_mfrpl(struct ib_fast_reg_page_list * ibfrpl)242 static inline struct mlx4_ib_fast_reg_page_list *to_mfrpl(struct ib_fast_reg_page_list *ibfrpl)
243 {
244 return container_of(ibfrpl, struct mlx4_ib_fast_reg_page_list, ibfrpl);
245 }
246
to_mfmr(struct ib_fmr * ibfmr)247 static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
248 {
249 return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
250 }
to_mqp(struct ib_qp * ibqp)251 static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
252 {
253 return container_of(ibqp, struct mlx4_ib_qp, ibqp);
254 }
255
to_mibqp(struct mlx4_qp * mqp)256 static inline struct mlx4_ib_qp *to_mibqp(struct mlx4_qp *mqp)
257 {
258 return container_of(mqp, struct mlx4_ib_qp, mqp);
259 }
260
to_msrq(struct ib_srq * ibsrq)261 static inline struct mlx4_ib_srq *to_msrq(struct ib_srq *ibsrq)
262 {
263 return container_of(ibsrq, struct mlx4_ib_srq, ibsrq);
264 }
265
to_mibsrq(struct mlx4_srq * msrq)266 static inline struct mlx4_ib_srq *to_mibsrq(struct mlx4_srq *msrq)
267 {
268 return container_of(msrq, struct mlx4_ib_srq, msrq);
269 }
270
to_mah(struct ib_ah * ibah)271 static inline struct mlx4_ib_ah *to_mah(struct ib_ah *ibah)
272 {
273 return container_of(ibah, struct mlx4_ib_ah, ibah);
274 }
275
276 int mlx4_ib_db_map_user(struct mlx4_ib_ucontext *context, unsigned long virt,
277 struct mlx4_db *db);
278 void mlx4_ib_db_unmap_user(struct mlx4_ib_ucontext *context, struct mlx4_db *db);
279
280 struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc);
281 int mlx4_ib_umem_write_mtt(struct mlx4_ib_dev *dev, struct mlx4_mtt *mtt,
282 struct ib_umem *umem);
283 struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
284 u64 virt_addr, int access_flags,
285 struct ib_udata *udata);
286 int mlx4_ib_dereg_mr(struct ib_mr *mr);
287 struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
288 int max_page_list_len);
289 struct ib_fast_reg_page_list *mlx4_ib_alloc_fast_reg_page_list(struct ib_device *ibdev,
290 int page_list_len);
291 void mlx4_ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
292
293 int mlx4_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
294 int mlx4_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
295 struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, int entries, int vector,
296 struct ib_ucontext *context,
297 struct ib_udata *udata);
298 int mlx4_ib_destroy_cq(struct ib_cq *cq);
299 int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
300 int mlx4_ib_arm_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
301 void __mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
302 void mlx4_ib_cq_clean(struct mlx4_ib_cq *cq, u32 qpn, struct mlx4_ib_srq *srq);
303
304 struct ib_ah *mlx4_ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
305 int mlx4_ib_query_ah(struct ib_ah *ibah, struct ib_ah_attr *ah_attr);
306 int mlx4_ib_destroy_ah(struct ib_ah *ah);
307
308 struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
309 struct ib_srq_init_attr *init_attr,
310 struct ib_udata *udata);
311 int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
312 enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
313 int mlx4_ib_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
314 int mlx4_ib_destroy_srq(struct ib_srq *srq);
315 void mlx4_ib_free_srq_wqe(struct mlx4_ib_srq *srq, int wqe_index);
316 int mlx4_ib_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
317 struct ib_recv_wr **bad_wr);
318
319 struct ib_qp *mlx4_ib_create_qp(struct ib_pd *pd,
320 struct ib_qp_init_attr *init_attr,
321 struct ib_udata *udata);
322 int mlx4_ib_destroy_qp(struct ib_qp *qp);
323 int mlx4_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
324 int attr_mask, struct ib_udata *udata);
325 int mlx4_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
326 struct ib_qp_init_attr *qp_init_attr);
327 int mlx4_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
328 struct ib_send_wr **bad_wr);
329 int mlx4_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
330 struct ib_recv_wr **bad_wr);
331
332 int mlx4_MAD_IFC(struct mlx4_ib_dev *dev, int ignore_mkey, int ignore_bkey,
333 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
334 void *in_mad, void *response_mad);
335 int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
336 struct ib_wc *in_wc, struct ib_grh *in_grh,
337 struct ib_mad *in_mad, struct ib_mad *out_mad);
338 int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
339 void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
340
341 struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
342 struct ib_fmr_attr *fmr_attr);
343 int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
344 u64 iova);
345 int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
346 int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
347
348 int mlx4_ib_resolve_grh(struct mlx4_ib_dev *dev, const struct ib_ah_attr *ah_attr,
349 u8 *mac, int *is_mcast, u8 port);
350
mlx4_ib_ah_grh_present(struct mlx4_ib_ah * ah)351 static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
352 {
353 u8 port = be32_to_cpu(ah->av.ib.port_pd) >> 24 & 3;
354
355 if (rdma_port_get_link_layer(ah->ibah.device, port) == IB_LINK_LAYER_ETHERNET)
356 return 1;
357
358 return !!(ah->av.ib.g_slid & 0x80);
359 }
360
361 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
362 union ib_gid *gid);
363
364 #endif /* MLX4_IB_H */
365