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0194621b DD |
1 | #ifndef DEF_RDMA_VT_H |
2 | #define DEF_RDMA_VT_H | |
3 | ||
4 | /* | |
5d18ee67 | 5 | * Copyright(c) 2016 - 2018 Intel Corporation. |
0194621b DD |
6 | * |
7 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
8 | * redistributing this file, you may do so under either license. | |
9 | * | |
10 | * GPL LICENSE SUMMARY | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of version 2 of the GNU General Public License as | |
14 | * published by the Free Software Foundation. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, but | |
17 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * General Public License for more details. | |
20 | * | |
21 | * BSD LICENSE | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * | |
27 | * - Redistributions of source code must retain the above copyright | |
28 | * notice, this list of conditions and the following disclaimer. | |
29 | * - Redistributions in binary form must reproduce the above copyright | |
30 | * notice, this list of conditions and the following disclaimer in | |
31 | * the documentation and/or other materials provided with the | |
32 | * distribution. | |
33 | * - Neither the name of Intel Corporation nor the names of its | |
34 | * contributors may be used to endorse or promote products derived | |
35 | * from this software without specific prior written permission. | |
36 | * | |
37 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
38 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
39 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
40 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
41 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
42 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
43 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
44 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
45 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
46 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
47 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 | * | |
49 | */ | |
50 | ||
51 | /* | |
52 | * Structure that low level drivers will populate in order to register with the | |
53 | * rdmavt layer. | |
54 | */ | |
55 | ||
f3d01bbc DD |
56 | #include <linux/spinlock.h> |
57 | #include <linux/list.h> | |
3b0b3fb3 | 58 | #include <linux/hash.h> |
b4e64397 | 59 | #include <rdma/ib_verbs.h> |
bf90aadd | 60 | #include <rdma/ib_mad.h> |
b4e64397 DD |
61 | #include <rdma/rdmavt_mr.h> |
62 | #include <rdma/rdmavt_qp.h> | |
f2f34211 | 63 | |
38ce2c6f DD |
64 | #define RVT_MAX_PKEY_VALUES 16 |
65 | ||
bf90aadd | 66 | #define RVT_MAX_TRAP_LEN 100 /* Limit pending trap list */ |
ec0d8b8a | 67 | #define RVT_MAX_TRAP_LISTS 5 /*((IB_NOTICE_TYPE_INFO & 0x0F) + 1)*/ |
bf90aadd MR |
68 | #define RVT_TRAP_TIMEOUT 4096 /* 4.096 usec */ |
69 | ||
70 | struct trap_list { | |
71 | u32 list_len; | |
72 | struct list_head list; | |
73 | }; | |
74 | ||
f3d01bbc DD |
75 | struct rvt_ibport { |
76 | struct rvt_qp __rcu *qp[2]; | |
77 | struct ib_mad_agent *send_agent; /* agent for SMI (traps) */ | |
78 | struct rb_root mcast_tree; | |
79 | spinlock_t lock; /* protect changes in this struct */ | |
80 | ||
81 | /* non-zero when timer is set */ | |
82 | unsigned long mkey_lease_timeout; | |
83 | unsigned long trap_timeout; | |
84 | __be64 gid_prefix; /* in network order */ | |
85 | __be64 mkey; | |
86 | u64 tid; | |
87 | u32 port_cap_flags; | |
cb49366f | 88 | u16 port_cap3_flags; |
f3d01bbc DD |
89 | u32 pma_sample_start; |
90 | u32 pma_sample_interval; | |
91 | __be16 pma_counter_select[5]; | |
92 | u16 pma_tag; | |
93 | u16 mkey_lease_period; | |
51e658f5 | 94 | u32 sm_lid; |
f3d01bbc DD |
95 | u8 sm_sl; |
96 | u8 mkeyprot; | |
97 | u8 subnet_timeout; | |
98 | u8 vl_high_limit; | |
99 | ||
100 | /* | |
101 | * Driver is expected to keep these up to date. These | |
102 | * counters are informational only and not required to be | |
103 | * completely accurate. | |
104 | */ | |
105 | u64 n_rc_resends; | |
106 | u64 n_seq_naks; | |
107 | u64 n_rdma_seq; | |
108 | u64 n_rnr_naks; | |
109 | u64 n_other_naks; | |
110 | u64 n_loop_pkts; | |
111 | u64 n_pkt_drops; | |
112 | u64 n_vl15_dropped; | |
113 | u64 n_rc_timeouts; | |
114 | u64 n_dmawait; | |
115 | u64 n_unaligned; | |
116 | u64 n_rc_dupreq; | |
117 | u64 n_rc_seqnak; | |
118 | u16 pkey_violations; | |
119 | u16 qkey_violations; | |
120 | u16 mkey_violations; | |
121 | ||
122 | /* Hot-path per CPU counters to avoid cacheline trading to update */ | |
123 | u64 z_rc_acks; | |
124 | u64 z_rc_qacks; | |
125 | u64 z_rc_delayed_comp; | |
126 | u64 __percpu *rc_acks; | |
127 | u64 __percpu *rc_qacks; | |
128 | u64 __percpu *rc_delayed_comp; | |
129 | ||
130 | void *priv; /* driver private data */ | |
131 | ||
38ce2c6f DD |
132 | /* |
133 | * The pkey table is allocated and maintained by the driver. Drivers | |
134 | * need to have access to this before registering with rdmav. However | |
135 | * rdmavt will need access to it so drivers need to proviee this during | |
136 | * the attach port API call. | |
137 | */ | |
138 | u16 *pkey_table; | |
139 | ||
3711baf2 | 140 | struct rvt_ah *sm_ah; |
bf90aadd MR |
141 | |
142 | /* | |
143 | * Keep a list of traps that have not been repressed. They will be | |
144 | * resent based on trap_timer. | |
145 | */ | |
146 | struct trap_list trap_lists[RVT_MAX_TRAP_LISTS]; | |
147 | struct timer_list trap_timer; | |
f3d01bbc DD |
148 | }; |
149 | ||
6f6387ae DD |
150 | #define RVT_CQN_MAX 16 /* maximum length of cq name */ |
151 | ||
8afd32eb DD |
152 | /* |
153 | * Things that are driver specific, module parameters in hfi1 and qib | |
154 | */ | |
155 | struct rvt_driver_params { | |
b1070a7a DD |
156 | struct ib_device_attr props; |
157 | ||
b1070a7a DD |
158 | /* |
159 | * Anything driver specific that is not covered by props | |
160 | * For instance special module parameters. Goes here. | |
161 | */ | |
7b1e2099 | 162 | unsigned int lkey_table_size; |
0acb0cc7 DD |
163 | unsigned int qp_table_size; |
164 | int qpn_start; | |
165 | int qpn_inc; | |
166 | int qpn_res_start; | |
167 | int qpn_res_end; | |
f3d01bbc | 168 | int nports; |
38ce2c6f | 169 | int npkeys; |
6f6387ae | 170 | int node; |
3b0b3fb3 DD |
171 | int psn_mask; |
172 | int psn_shift; | |
173 | int psn_modify_mask; | |
61a650c1 HC |
174 | u32 core_cap_flags; |
175 | u32 max_mad_size; | |
4c0b6533 MM |
176 | u8 qos_shift; |
177 | u8 max_rdma_atomic; | |
856cc4c2 | 178 | u8 reserved_operations; |
8afd32eb DD |
179 | }; |
180 | ||
b036db83 DD |
181 | /* Protection domain */ |
182 | struct rvt_pd { | |
183 | struct ib_pd ibpd; | |
0128fcea | 184 | bool user; |
b036db83 DD |
185 | }; |
186 | ||
187 | /* Address handle */ | |
188 | struct rvt_ah { | |
189 | struct ib_ah ibah; | |
90898850 | 190 | struct rdma_ah_attr attr; |
b036db83 DD |
191 | atomic_t refcount; |
192 | u8 vl; | |
193 | u8 log_pmtu; | |
194 | }; | |
195 | ||
b534875d | 196 | struct rvt_dev_info; |
46a80d62 | 197 | struct rvt_swqe; |
aec57787 DD |
198 | struct rvt_driver_provided { |
199 | /* | |
1348d706 DD |
200 | * Which functions are required depends on which verbs rdmavt is |
201 | * providing and which verbs the driver is overriding. See | |
202 | * check_support() for details. | |
aec57787 | 203 | */ |
b036db83 | 204 | |
be5d740b MM |
205 | /* hot path calldowns in a single cacheline */ |
206 | ||
207 | /* | |
208 | * Give the driver a notice that there is send work to do. It is up to | |
209 | * the driver to generally push the packets out, this just queues the | |
210 | * work with the driver. There are two variants here. The no_lock | |
211 | * version requires the s_lock not to be held. The other assumes the | |
212 | * s_lock is held. | |
213 | */ | |
214 | void (*schedule_send)(struct rvt_qp *qp); | |
215 | void (*schedule_send_no_lock)(struct rvt_qp *qp); | |
216 | ||
0b79b277 MR |
217 | /* |
218 | * Validate the wqe. This needs to be done prior to inserting the | |
219 | * wqe into the ring, but after the wqe has been set up. Allow for | |
220 | * driver specific work request checking by providing a callback. | |
221 | * call_send indicates if the wqe should be posted or scheduled. | |
222 | */ | |
223 | int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe, | |
224 | bool *call_send); | |
be5d740b MM |
225 | |
226 | /* | |
227 | * Sometimes rdmavt needs to kick the driver's send progress. That is | |
228 | * done by this call back. | |
229 | */ | |
230 | void (*do_send)(struct rvt_qp *qp); | |
231 | ||
1348d706 | 232 | /* Passed to ib core registration. Callback to create syfs files */ |
aec57787 | 233 | int (*port_callback)(struct ib_device *, u8, struct kobject *); |
1348d706 | 234 | |
1348d706 DD |
235 | /* |
236 | * Returns a pointer to the undelying hardware's PCI device. This is | |
237 | * used to display information as to what hardware is being referenced | |
238 | * in an output message | |
239 | */ | |
b534875d | 240 | struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi); |
1348d706 DD |
241 | |
242 | /* | |
243 | * Allocate a private queue pair data structure for driver specific | |
c755f4af MM |
244 | * information which is opaque to rdmavt. Errors are returned via |
245 | * ERR_PTR(err). The driver is free to return NULL or a valid | |
246 | * pointer. | |
1348d706 | 247 | */ |
0f4d027c | 248 | void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp); |
1348d706 DD |
249 | |
250 | /* | |
251 | * Free the driver's private qp structure. | |
252 | */ | |
515667f8 | 253 | void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp); |
1348d706 DD |
254 | |
255 | /* | |
256 | * Inform the driver the particular qp in quesiton has been reset so | |
257 | * that it can clean up anything it needs to. | |
258 | */ | |
515667f8 | 259 | void (*notify_qp_reset)(struct rvt_qp *qp); |
1348d706 | 260 | |
1348d706 DD |
261 | /* |
262 | * Get a path mtu from the driver based on qp attributes. | |
263 | */ | |
3b0b3fb3 DD |
264 | int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
265 | struct ib_qp_attr *attr); | |
1348d706 DD |
266 | |
267 | /* | |
268 | * Notify driver that it needs to flush any outstanding IO requests that | |
269 | * are waiting on a qp. | |
270 | */ | |
3b0b3fb3 | 271 | void (*flush_qp_waiters)(struct rvt_qp *qp); |
1348d706 DD |
272 | |
273 | /* | |
274 | * Notify driver to stop its queue of sending packets. Nothing else | |
275 | * should be posted to the queue pair after this has been called. | |
276 | */ | |
3b0b3fb3 | 277 | void (*stop_send_queue)(struct rvt_qp *qp); |
1348d706 DD |
278 | |
279 | /* | |
280 | * Have the drivr drain any in progress operations | |
281 | */ | |
3b0b3fb3 | 282 | void (*quiesce_qp)(struct rvt_qp *qp); |
1348d706 DD |
283 | |
284 | /* | |
285 | * Inform the driver a qp has went to error state. | |
286 | */ | |
3b0b3fb3 | 287 | void (*notify_error_qp)(struct rvt_qp *qp); |
1348d706 DD |
288 | |
289 | /* | |
290 | * Get an MTU for a qp. | |
291 | */ | |
3b0b3fb3 DD |
292 | u32 (*mtu_from_qp)(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
293 | u32 pmtu); | |
1348d706 DD |
294 | /* |
295 | * Convert an mtu to a path mtu | |
296 | */ | |
3b0b3fb3 | 297 | int (*mtu_to_path_mtu)(u32 mtu); |
1348d706 DD |
298 | |
299 | /* | |
300 | * Get the guid of a port in big endian byte order | |
301 | */ | |
1f024992 DD |
302 | int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp, |
303 | int guid_index, __be64 *guid); | |
1348d706 DD |
304 | |
305 | /* | |
306 | * Query driver for the state of the port. | |
307 | */ | |
61a650c1 HC |
308 | int (*query_port_state)(struct rvt_dev_info *rdi, u8 port_num, |
309 | struct ib_port_attr *props); | |
1348d706 DD |
310 | |
311 | /* | |
312 | * Tell driver to shutdown a port | |
313 | */ | |
61a650c1 | 314 | int (*shut_down_port)(struct rvt_dev_info *rdi, u8 port_num); |
1348d706 DD |
315 | |
316 | /* Tell driver to send a trap for changed port capabilities */ | |
61a650c1 | 317 | void (*cap_mask_chg)(struct rvt_dev_info *rdi, u8 port_num); |
aec57787 | 318 | |
1348d706 DD |
319 | /* |
320 | * The following functions can be safely ignored completely. Any use of | |
321 | * these is checked for NULL before blindly calling. Rdmavt should also | |
322 | * be functional if drivers omit these. | |
323 | */ | |
324 | ||
325 | /* Called to inform the driver that all qps should now be freed. */ | |
326 | unsigned (*free_all_qps)(struct rvt_dev_info *rdi); | |
327 | ||
328 | /* Driver specific AH validation */ | |
90898850 | 329 | int (*check_ah)(struct ib_device *, struct rdma_ah_attr *); |
1348d706 DD |
330 | |
331 | /* Inform the driver a new AH has been created */ | |
90898850 | 332 | void (*notify_new_ah)(struct ib_device *, struct rdma_ah_attr *, |
b036db83 | 333 | struct rvt_ah *); |
1348d706 DD |
334 | |
335 | /* Let the driver pick the next queue pair number*/ | |
515667f8 | 336 | int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, |
0f4d027c | 337 | enum ib_qp_type type, u8 port_num); |
1348d706 DD |
338 | |
339 | /* Determine if its safe or allowed to modify the qp */ | |
e85ec33d IW |
340 | int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, |
341 | int attr_mask, struct ib_udata *udata); | |
1348d706 DD |
342 | |
343 | /* Driver specific QP modification/notification-of */ | |
e85ec33d IW |
344 | void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, |
345 | int attr_mask, struct ib_udata *udata); | |
3711baf2 | 346 | |
1348d706 | 347 | /* Notify driver a mad agent has been created */ |
3711baf2 | 348 | void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx); |
1348d706 DD |
349 | |
350 | /* Notify driver a mad agent has been removed */ | |
3711baf2 | 351 | void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx); |
1348d706 | 352 | |
11a10d4b VSD |
353 | /* Notify driver to restart rc */ |
354 | void (*notify_restart_rc)(struct rvt_qp *qp, u32 psn, int wait); | |
5d18ee67 SS |
355 | |
356 | /* Get and return CPU to pin CQ processing thread */ | |
357 | int (*comp_vect_cpu_lookup)(struct rvt_dev_info *rdi, int comp_vect); | |
119a8e70 KH |
358 | }; |
359 | ||
0194621b | 360 | struct rvt_dev_info { |
7b1e2099 DD |
361 | struct ib_device ibdev; /* Keep this first. Nothing above here */ |
362 | ||
b1070a7a DD |
363 | /* |
364 | * Prior to calling for registration the driver will be responsible for | |
365 | * allocating space for this structure. | |
366 | * | |
367 | * The driver will also be responsible for filling in certain members of | |
feaeb6e2 HC |
368 | * dparms.props. The driver needs to fill in dparms exactly as it would |
369 | * want values reported to a ULP. This will be returned to the caller | |
370 | * in rdmavt's device. The driver should also therefore refrain from | |
371 | * modifying this directly after registration with rdmavt. | |
b1070a7a | 372 | */ |
8afd32eb | 373 | |
b1070a7a | 374 | /* Driver specific properties */ |
8afd32eb | 375 | struct rvt_driver_params dparms; |
b1070a7a | 376 | |
afcf8f76 MM |
377 | /* post send table */ |
378 | const struct rvt_operation_params *post_parms; | |
379 | ||
aec57787 DD |
380 | /* Driver specific helper functions */ |
381 | struct rvt_driver_provided driver_f; | |
0194621b | 382 | |
be5d740b MM |
383 | struct rvt_mregion __rcu *dma_mr; |
384 | struct rvt_lkey_table lkey_table; | |
385 | ||
8afd32eb DD |
386 | /* Internal use */ |
387 | int n_pds_allocated; | |
388 | spinlock_t n_pds_lock; /* Protect pd allocated count */ | |
0b8a8aae | 389 | |
119a8e70 KH |
390 | int n_ahs_allocated; |
391 | spinlock_t n_ahs_lock; /* Protect ah allocated count */ | |
392 | ||
b8f881b9 JJ |
393 | u32 n_srqs_allocated; |
394 | spinlock_t n_srqs_lock; /* Protect srqs allocated count */ | |
395 | ||
0b8a8aae | 396 | int flags; |
f3d01bbc | 397 | struct rvt_ibport **ports; |
0acb0cc7 | 398 | |
515667f8 | 399 | /* QP */ |
0acb0cc7 | 400 | struct rvt_qp_ibdev *qp_dev; |
515667f8 | 401 | u32 n_qps_allocated; /* number of QPs allocated for device */ |
bfee5e32 VM |
402 | u32 n_rc_qps; /* number of RC QPs allocated for device */ |
403 | u32 busy_jiffies; /* timeout scaling based on RC QP count */ | |
404 | spinlock_t n_qps_lock; /* protect qps, rc qps and busy jiffy counts */ | |
822514d7 DD |
405 | |
406 | /* memory maps */ | |
407 | struct list_head pending_mmaps; | |
408 | spinlock_t mmap_offset_lock; /* protect mmap_offset */ | |
409 | u32 mmap_offset; | |
410 | spinlock_t pending_lock; /* protect pending mmap list */ | |
6f6387ae DD |
411 | |
412 | /* CQ */ | |
6f6387ae DD |
413 | u32 n_cqs_allocated; /* number of CQs allocated for device */ |
414 | spinlock_t n_cqs_lock; /* protect count of in use cqs */ | |
4e74080b DD |
415 | |
416 | /* Multicast */ | |
417 | u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ | |
418 | spinlock_t n_mcast_grps_lock; | |
419 | ||
0194621b DD |
420 | }; |
421 | ||
5084c8ff MR |
422 | /** |
423 | * rvt_set_ibdev_name - Craft an IB device name from client info | |
424 | * @rdi: pointer to the client rvt_dev_info structure | |
425 | * @name: client specific name | |
426 | * @unit: client specific unit number. | |
427 | */ | |
428 | static inline void rvt_set_ibdev_name(struct rvt_dev_info *rdi, | |
429 | const char *fmt, const char *name, | |
430 | const int unit) | |
431 | { | |
e349f858 JG |
432 | /* |
433 | * FIXME: rvt and its users want to touch the ibdev before | |
434 | * registration and have things like the name work. We don't have the | |
435 | * infrastructure in the core to support this directly today, hack it | |
436 | * to work by setting the name manually here. | |
437 | */ | |
438 | dev_set_name(&rdi->ibdev.dev, fmt, name, unit); | |
439 | strlcpy(rdi->ibdev.name, dev_name(&rdi->ibdev.dev), IB_DEVICE_NAME_MAX); | |
5084c8ff MR |
440 | } |
441 | ||
06f2597f MR |
442 | /** |
443 | * rvt_get_ibdev_name - return the IB name | |
444 | * @rdi: rdmavt device | |
445 | * | |
446 | * Return the registered name of the device. | |
447 | */ | |
448 | static inline const char *rvt_get_ibdev_name(const struct rvt_dev_info *rdi) | |
449 | { | |
450 | return rdi->ibdev.name; | |
451 | } | |
452 | ||
8afd32eb DD |
453 | static inline struct rvt_pd *ibpd_to_rvtpd(struct ib_pd *ibpd) |
454 | { | |
455 | return container_of(ibpd, struct rvt_pd, ibpd); | |
456 | } | |
457 | ||
119a8e70 KH |
458 | static inline struct rvt_ah *ibah_to_rvtah(struct ib_ah *ibah) |
459 | { | |
460 | return container_of(ibah, struct rvt_ah, ibah); | |
461 | } | |
462 | ||
8afd32eb DD |
463 | static inline struct rvt_dev_info *ib_to_rvt(struct ib_device *ibdev) |
464 | { | |
465 | return container_of(ibdev, struct rvt_dev_info, ibdev); | |
466 | } | |
467 | ||
70a1a351 DD |
468 | static inline struct rvt_srq *ibsrq_to_rvtsrq(struct ib_srq *ibsrq) |
469 | { | |
470 | return container_of(ibsrq, struct rvt_srq, ibsrq); | |
471 | } | |
472 | ||
bfbac097 DD |
473 | static inline struct rvt_qp *ibqp_to_rvtqp(struct ib_qp *ibqp) |
474 | { | |
475 | return container_of(ibqp, struct rvt_qp, ibqp); | |
476 | } | |
477 | ||
38ce2c6f DD |
478 | static inline unsigned rvt_get_npkeys(struct rvt_dev_info *rdi) |
479 | { | |
480 | /* | |
481 | * All ports have same number of pkeys. | |
482 | */ | |
483 | return rdi->dparms.npkeys; | |
484 | } | |
485 | ||
8b103e9c MM |
486 | /* |
487 | * Return the max atomic suitable for determining | |
488 | * the size of the ack ring buffer in a QP. | |
489 | */ | |
490 | static inline unsigned int rvt_max_atomic(struct rvt_dev_info *rdi) | |
491 | { | |
492 | return rdi->dparms.max_rdma_atomic + 1; | |
493 | } | |
494 | ||
38ce2c6f DD |
495 | /* |
496 | * Return the indexed PKEY from the port PKEY table. | |
497 | */ | |
498 | static inline u16 rvt_get_pkey(struct rvt_dev_info *rdi, | |
499 | int port_index, | |
500 | unsigned index) | |
501 | { | |
502 | if (index >= rvt_get_npkeys(rdi)) | |
503 | return 0; | |
504 | else | |
505 | return rdi->ports[port_index]->pkey_table[index]; | |
506 | } | |
507 | ||
3b0b3fb3 DD |
508 | /** |
509 | * rvt_lookup_qpn - return the QP with the given QPN | |
510 | * @ibp: the ibport | |
511 | * @qpn: the QP number to look up | |
512 | * | |
513 | * The caller must hold the rcu_read_lock(), and keep the lock until | |
514 | * the returned qp is no longer in use. | |
515 | */ | |
516 | /* TODO: Remove this and put in rdmavt/qp.h when no longer needed by drivers */ | |
517 | static inline struct rvt_qp *rvt_lookup_qpn(struct rvt_dev_info *rdi, | |
518 | struct rvt_ibport *rvp, | |
519 | u32 qpn) __must_hold(RCU) | |
520 | { | |
521 | struct rvt_qp *qp = NULL; | |
522 | ||
523 | if (unlikely(qpn <= 1)) { | |
524 | qp = rcu_dereference(rvp->qp[qpn]); | |
525 | } else { | |
526 | u32 n = hash_32(qpn, rdi->qp_dev->qp_table_bits); | |
527 | ||
528 | for (qp = rcu_dereference(rdi->qp_dev->qp_table[n]); qp; | |
529 | qp = rcu_dereference(qp->next)) | |
530 | if (qp->ibqp.qp_num == qpn) | |
531 | break; | |
532 | } | |
533 | return qp; | |
534 | } | |
535 | ||
11a10d4b VSD |
536 | /** |
537 | * rvt_mod_retry_timer - mod a retry timer | |
538 | * @qp - the QP | |
539 | * Modify a potentially already running retry timer | |
540 | */ | |
541 | static inline void rvt_mod_retry_timer(struct rvt_qp *qp) | |
542 | { | |
543 | struct ib_qp *ibqp = &qp->ibqp; | |
544 | struct rvt_dev_info *rdi = ib_to_rvt(ibqp->device); | |
545 | ||
546 | lockdep_assert_held(&qp->s_lock); | |
547 | qp->s_flags |= RVT_S_TIMER; | |
548 | /* 4.096 usec. * (1 << qp->timeout) */ | |
549 | mod_timer(&qp->s_timer, jiffies + qp->timeout_jiffies + | |
550 | rdi->busy_jiffies); | |
551 | } | |
552 | ||
ff6acd69 | 553 | struct rvt_dev_info *rvt_alloc_device(size_t size, int nports); |
ea0e4ce3 | 554 | void rvt_dealloc_device(struct rvt_dev_info *rdi); |
0ede73bc | 555 | int rvt_register_device(struct rvt_dev_info *rvd, u32 driver_id); |
0194621b | 556 | void rvt_unregister_device(struct rvt_dev_info *rvd); |
90898850 | 557 | int rvt_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr); |
38ce2c6f | 558 | int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port, |
f1badc71 | 559 | int port_index, u16 *pkey_table); |
e8f8b098 JX |
560 | int rvt_fast_reg_mr(struct rvt_qp *qp, struct ib_mr *ibmr, u32 key, |
561 | int access); | |
562 | int rvt_invalidate_rkey(struct rvt_qp *qp, u32 rkey); | |
7b1e2099 DD |
563 | int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge, |
564 | u32 len, u64 vaddr, u32 rkey, int acc); | |
565 | int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd, | |
14fe13fc MM |
566 | struct rvt_sge *isge, struct rvt_sge *last_sge, |
567 | struct ib_sge *sge, int acc); | |
aad9ff97 MR |
568 | struct rvt_mcast *rvt_mcast_find(struct rvt_ibport *ibp, union ib_gid *mgid, |
569 | u16 lid); | |
822514d7 | 570 | |
0194621b | 571 | #endif /* DEF_RDMA_VT_H */ |