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Dennis Dalessandro01946212016-01-06 09:50:24 -08001#ifndef DEF_RDMA_VT_H
2#define DEF_RDMA_VT_H
3
4/*
Dennis Dalessandrofe314192016-01-22 13:04:58 -08005 * Copyright(c) 2016 Intel Corporation.
Dennis Dalessandro01946212016-01-06 09:50:24 -08006 *
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
Dennis Dalessandrof3d01bb2016-01-06 10:04:13 -080056#include <linux/spinlock.h>
57#include <linux/list.h>
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -080058#include <linux/hash.h>
Dennis Dalessandrob4e64392016-01-06 10:04:31 -080059#include <rdma/ib_verbs.h>
60#include <rdma/rdmavt_mr.h>
61#include <rdma/rdmavt_qp.h>
Kamal Heibf2f34212016-01-06 10:03:47 -080062
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -080063#define RVT_MAX_PKEY_VALUES 16
64
Dennis Dalessandrof3d01bb2016-01-06 10:04:13 -080065struct rvt_ibport {
66 struct rvt_qp __rcu *qp[2];
67 struct ib_mad_agent *send_agent; /* agent for SMI (traps) */
68 struct rb_root mcast_tree;
69 spinlock_t lock; /* protect changes in this struct */
70
71 /* non-zero when timer is set */
72 unsigned long mkey_lease_timeout;
73 unsigned long trap_timeout;
74 __be64 gid_prefix; /* in network order */
75 __be64 mkey;
76 u64 tid;
77 u32 port_cap_flags;
78 u32 pma_sample_start;
79 u32 pma_sample_interval;
80 __be16 pma_counter_select[5];
81 u16 pma_tag;
82 u16 mkey_lease_period;
83 u16 sm_lid;
84 u8 sm_sl;
85 u8 mkeyprot;
86 u8 subnet_timeout;
87 u8 vl_high_limit;
88
89 /*
90 * Driver is expected to keep these up to date. These
91 * counters are informational only and not required to be
92 * completely accurate.
93 */
94 u64 n_rc_resends;
95 u64 n_seq_naks;
96 u64 n_rdma_seq;
97 u64 n_rnr_naks;
98 u64 n_other_naks;
99 u64 n_loop_pkts;
100 u64 n_pkt_drops;
101 u64 n_vl15_dropped;
102 u64 n_rc_timeouts;
103 u64 n_dmawait;
104 u64 n_unaligned;
105 u64 n_rc_dupreq;
106 u64 n_rc_seqnak;
107 u16 pkey_violations;
108 u16 qkey_violations;
109 u16 mkey_violations;
110
111 /* Hot-path per CPU counters to avoid cacheline trading to update */
112 u64 z_rc_acks;
113 u64 z_rc_qacks;
114 u64 z_rc_delayed_comp;
115 u64 __percpu *rc_acks;
116 u64 __percpu *rc_qacks;
117 u64 __percpu *rc_delayed_comp;
118
119 void *priv; /* driver private data */
120
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -0800121 /*
122 * The pkey table is allocated and maintained by the driver. Drivers
123 * need to have access to this before registering with rdmav. However
124 * rdmavt will need access to it so drivers need to proviee this during
125 * the attach port API call.
126 */
127 u16 *pkey_table;
128
Dennis Dalessandro3711baf2016-01-22 13:04:51 -0800129 struct rvt_ah *sm_ah;
Dennis Dalessandrof3d01bb2016-01-06 10:04:13 -0800130};
131
Dennis Dalessandro6f6387a2016-01-22 13:00:15 -0800132#define RVT_CQN_MAX 16 /* maximum length of cq name */
133
Dennis Dalessandroca889e82016-01-06 10:02:41 -0800134/*
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800135 * Things that are driver specific, module parameters in hfi1 and qib
136 */
137struct rvt_driver_params {
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800138 struct ib_device_attr props;
139
140 /*
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800141 * Anything driver specific that is not covered by props
142 * For instance special module parameters. Goes here.
143 */
Dennis Dalessandro7b1e2092016-01-06 10:03:31 -0800144 unsigned int lkey_table_size;
Dennis Dalessandro0acb0cc2016-01-06 10:04:46 -0800145 unsigned int qp_table_size;
146 int qpn_start;
147 int qpn_inc;
148 int qpn_res_start;
149 int qpn_res_end;
Dennis Dalessandrof3d01bb2016-01-06 10:04:13 -0800150 int nports;
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -0800151 int npkeys;
Dennis Dalessandro6f6387a2016-01-22 13:00:15 -0800152 char cq_name[RVT_CQN_MAX];
153 int node;
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800154 int psn_mask;
155 int psn_shift;
156 int psn_modify_mask;
Harish Chegondi61a650c2016-02-03 14:15:20 -0800157 u32 core_cap_flags;
158 u32 max_mad_size;
Mike Marciniszyn4c0b6532016-05-24 12:50:34 -0700159 u8 qos_shift;
160 u8 max_rdma_atomic;
Mike Marciniszyn856cc4c2016-07-25 13:39:39 -0700161 u8 reserved_operations;
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800162};
163
164/* Protection domain */
165struct rvt_pd {
166 struct ib_pd ibpd;
Brian Welty0128fce2017-02-08 05:27:31 -0800167 bool user;
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800168};
169
Kamal Heib119a8e72016-01-06 10:03:59 -0800170/* Address handle */
171struct rvt_ah {
172 struct ib_ah ibah;
Dasaratharaman Chandramouli90898852017-04-29 14:41:18 -0400173 struct rdma_ah_attr attr;
Kamal Heib119a8e72016-01-06 10:03:59 -0800174 atomic_t refcount;
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800175 u8 vl;
176 u8 log_pmtu;
177};
178
179struct rvt_dev_info;
Mike Marciniszyn46a80d62016-02-14 12:10:04 -0800180struct rvt_swqe;
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800181struct rvt_driver_provided {
182 /*
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800183 * Which functions are required depends on which verbs rdmavt is
184 * providing and which verbs the driver is overriding. See
185 * check_support() for details.
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800186 */
187
Mike Marciniszynbe5d740b2016-10-17 04:19:07 -0700188 /* hot path calldowns in a single cacheline */
189
190 /*
191 * Give the driver a notice that there is send work to do. It is up to
192 * the driver to generally push the packets out, this just queues the
193 * work with the driver. There are two variants here. The no_lock
194 * version requires the s_lock not to be held. The other assumes the
195 * s_lock is held.
196 */
197 void (*schedule_send)(struct rvt_qp *qp);
198 void (*schedule_send_no_lock)(struct rvt_qp *qp);
199
200 /* Driver specific work request checking */
201 int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe);
202
203 /*
204 * Sometimes rdmavt needs to kick the driver's send progress. That is
205 * done by this call back.
206 */
207 void (*do_send)(struct rvt_qp *qp);
208
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800209 /* Passed to ib core registration. Callback to create syfs files */
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800210 int (*port_callback)(struct ib_device *, u8, struct kobject *);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800211
212 /*
213 * Returns a string to represent the device for which is being
214 * registered. This is primarily used for error and debug messages on
215 * the console.
216 */
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800217 const char * (*get_card_name)(struct rvt_dev_info *rdi);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800218
219 /*
220 * Returns a pointer to the undelying hardware's PCI device. This is
221 * used to display information as to what hardware is being referenced
222 * in an output message
223 */
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800224 struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800225
226 /*
227 * Allocate a private queue pair data structure for driver specific
Mike Marciniszync755f4a2016-06-22 13:29:33 -0700228 * information which is opaque to rdmavt. Errors are returned via
229 * ERR_PTR(err). The driver is free to return NULL or a valid
230 * pointer.
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800231 */
Leon Romanovsky0f4d0272017-05-23 14:38:14 +0300232 void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800233
234 /*
235 * Free the driver's private qp structure.
236 */
Dennis Dalessandro515667f2016-01-22 12:50:17 -0800237 void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800238
239 /*
240 * Inform the driver the particular qp in quesiton has been reset so
241 * that it can clean up anything it needs to.
242 */
Dennis Dalessandro515667f2016-01-22 12:50:17 -0800243 void (*notify_qp_reset)(struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800244
245 /*
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800246 * Get a path mtu from the driver based on qp attributes.
247 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800248 int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
249 struct ib_qp_attr *attr);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800250
251 /*
252 * Notify driver that it needs to flush any outstanding IO requests that
253 * are waiting on a qp.
254 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800255 void (*flush_qp_waiters)(struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800256
257 /*
258 * Notify driver to stop its queue of sending packets. Nothing else
259 * should be posted to the queue pair after this has been called.
260 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800261 void (*stop_send_queue)(struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800262
263 /*
264 * Have the drivr drain any in progress operations
265 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800266 void (*quiesce_qp)(struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800267
268 /*
269 * Inform the driver a qp has went to error state.
270 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800271 void (*notify_error_qp)(struct rvt_qp *qp);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800272
273 /*
274 * Get an MTU for a qp.
275 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800276 u32 (*mtu_from_qp)(struct rvt_dev_info *rdi, struct rvt_qp *qp,
277 u32 pmtu);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800278 /*
279 * Convert an mtu to a path mtu
280 */
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800281 int (*mtu_to_path_mtu)(u32 mtu);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800282
283 /*
284 * Get the guid of a port in big endian byte order
285 */
Dennis Dalessandro1f024992016-02-03 14:15:11 -0800286 int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp,
287 int guid_index, __be64 *guid);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800288
289 /*
290 * Query driver for the state of the port.
291 */
Harish Chegondi61a650c2016-02-03 14:15:20 -0800292 int (*query_port_state)(struct rvt_dev_info *rdi, u8 port_num,
293 struct ib_port_attr *props);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800294
295 /*
296 * Tell driver to shutdown a port
297 */
Harish Chegondi61a650c2016-02-03 14:15:20 -0800298 int (*shut_down_port)(struct rvt_dev_info *rdi, u8 port_num);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800299
300 /* Tell driver to send a trap for changed port capabilities */
Harish Chegondi61a650c2016-02-03 14:15:20 -0800301 void (*cap_mask_chg)(struct rvt_dev_info *rdi, u8 port_num);
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800302
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800303 /*
304 * The following functions can be safely ignored completely. Any use of
305 * these is checked for NULL before blindly calling. Rdmavt should also
306 * be functional if drivers omit these.
307 */
308
309 /* Called to inform the driver that all qps should now be freed. */
310 unsigned (*free_all_qps)(struct rvt_dev_info *rdi);
311
312 /* Driver specific AH validation */
Dasaratharaman Chandramouli90898852017-04-29 14:41:18 -0400313 int (*check_ah)(struct ib_device *, struct rdma_ah_attr *);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800314
315 /* Inform the driver a new AH has been created */
Dasaratharaman Chandramouli90898852017-04-29 14:41:18 -0400316 void (*notify_new_ah)(struct ib_device *, struct rdma_ah_attr *,
Dennis Dalessandrob036db82016-01-06 10:04:23 -0800317 struct rvt_ah *);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800318
319 /* Let the driver pick the next queue pair number*/
Dennis Dalessandro515667f2016-01-22 12:50:17 -0800320 int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
Leon Romanovsky0f4d0272017-05-23 14:38:14 +0300321 enum ib_qp_type type, u8 port_num);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800322
323 /* Determine if its safe or allowed to modify the qp */
Ira Weinye85ec332016-01-22 13:04:38 -0800324 int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
325 int attr_mask, struct ib_udata *udata);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800326
327 /* Driver specific QP modification/notification-of */
Ira Weinye85ec332016-01-22 13:04:38 -0800328 void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,
329 int attr_mask, struct ib_udata *udata);
Dennis Dalessandro3711baf2016-01-22 13:04:51 -0800330
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800331 /* Notify driver a mad agent has been created */
Dennis Dalessandro3711baf2016-01-22 13:04:51 -0800332 void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800333
334 /* Notify driver a mad agent has been removed */
Dennis Dalessandro3711baf2016-01-22 13:04:51 -0800335 void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx);
Dennis Dalessandro1348d702016-02-14 12:10:37 -0800336
Venkata Sandeep Dhanalakota11a10d42017-02-08 05:27:13 -0800337 /* Notify driver to restart rc */
338 void (*notify_restart_rc)(struct rvt_qp *qp, u32 psn, int wait);
Kamal Heib119a8e72016-01-06 10:03:59 -0800339};
340
Dennis Dalessandro01946212016-01-06 09:50:24 -0800341struct rvt_dev_info {
Dennis Dalessandro7b1e2092016-01-06 10:03:31 -0800342 struct ib_device ibdev; /* Keep this first. Nothing above here */
343
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800344 /*
345 * Prior to calling for registration the driver will be responsible for
346 * allocating space for this structure.
347 *
348 * The driver will also be responsible for filling in certain members of
Harish Chegondifeaeb6e2016-01-22 12:50:36 -0800349 * dparms.props. The driver needs to fill in dparms exactly as it would
350 * want values reported to a ULP. This will be returned to the caller
351 * in rdmavt's device. The driver should also therefore refrain from
352 * modifying this directly after registration with rdmavt.
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800353 */
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800354
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800355 /* Driver specific properties */
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800356 struct rvt_driver_params dparms;
Dennis Dalessandrob1070a72016-01-06 09:52:19 -0800357
Mike Marciniszynafcf8f72016-07-01 16:02:07 -0700358 /* post send table */
359 const struct rvt_operation_params *post_parms;
360
Dennis Dalessandroaec57782016-01-06 10:02:52 -0800361 /* Driver specific helper functions */
362 struct rvt_driver_provided driver_f;
Dennis Dalessandro01946212016-01-06 09:50:24 -0800363
Mike Marciniszynbe5d740b2016-10-17 04:19:07 -0700364 struct rvt_mregion __rcu *dma_mr;
365 struct rvt_lkey_table lkey_table;
366
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800367 /* Internal use */
368 int n_pds_allocated;
369 spinlock_t n_pds_lock; /* Protect pd allocated count */
Dennis Dalessandro0b8a8aa2016-01-06 10:03:07 -0800370
Kamal Heib119a8e72016-01-06 10:03:59 -0800371 int n_ahs_allocated;
372 spinlock_t n_ahs_lock; /* Protect ah allocated count */
373
Jubin Johnb8f881b2016-02-03 14:14:36 -0800374 u32 n_srqs_allocated;
375 spinlock_t n_srqs_lock; /* Protect srqs allocated count */
376
Dennis Dalessandro0b8a8aa2016-01-06 10:03:07 -0800377 int flags;
Dennis Dalessandrof3d01bb2016-01-06 10:04:13 -0800378 struct rvt_ibport **ports;
Dennis Dalessandro0acb0cc2016-01-06 10:04:46 -0800379
Dennis Dalessandro515667f2016-01-22 12:50:17 -0800380 /* QP */
Dennis Dalessandro0acb0cc2016-01-06 10:04:46 -0800381 struct rvt_qp_ibdev *qp_dev;
Dennis Dalessandro515667f2016-01-22 12:50:17 -0800382 u32 n_qps_allocated; /* number of QPs allocated for device */
Vennila Megavannanbfee5e32016-02-09 14:29:49 -0800383 u32 n_rc_qps; /* number of RC QPs allocated for device */
384 u32 busy_jiffies; /* timeout scaling based on RC QP count */
385 spinlock_t n_qps_lock; /* protect qps, rc qps and busy jiffy counts */
Dennis Dalessandro822514d2016-01-06 10:04:57 -0800386
387 /* memory maps */
388 struct list_head pending_mmaps;
389 spinlock_t mmap_offset_lock; /* protect mmap_offset */
390 u32 mmap_offset;
391 spinlock_t pending_lock; /* protect pending mmap list */
Dennis Dalessandro6f6387a2016-01-22 13:00:15 -0800392
393 /* CQ */
394 struct kthread_worker *worker; /* per device cq worker */
395 u32 n_cqs_allocated; /* number of CQs allocated for device */
396 spinlock_t n_cqs_lock; /* protect count of in use cqs */
Dennis Dalessandro4e740802016-01-22 13:00:55 -0800397
398 /* Multicast */
399 u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
400 spinlock_t n_mcast_grps_lock;
401
Dennis Dalessandro01946212016-01-06 09:50:24 -0800402};
403
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800404static inline struct rvt_pd *ibpd_to_rvtpd(struct ib_pd *ibpd)
405{
406 return container_of(ibpd, struct rvt_pd, ibpd);
407}
408
Kamal Heib119a8e72016-01-06 10:03:59 -0800409static inline struct rvt_ah *ibah_to_rvtah(struct ib_ah *ibah)
410{
411 return container_of(ibah, struct rvt_ah, ibah);
412}
413
Dennis Dalessandro8afd32e2016-01-06 09:51:48 -0800414static inline struct rvt_dev_info *ib_to_rvt(struct ib_device *ibdev)
415{
416 return container_of(ibdev, struct rvt_dev_info, ibdev);
417}
418
Dennis Dalessandro70a1a352016-01-06 10:04:06 -0800419static inline struct rvt_srq *ibsrq_to_rvtsrq(struct ib_srq *ibsrq)
420{
421 return container_of(ibsrq, struct rvt_srq, ibsrq);
422}
423
Dennis Dalessandrobfbac092016-01-22 13:00:22 -0800424static inline struct rvt_qp *ibqp_to_rvtqp(struct ib_qp *ibqp)
425{
426 return container_of(ibqp, struct rvt_qp, ibqp);
427}
428
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -0800429static inline unsigned rvt_get_npkeys(struct rvt_dev_info *rdi)
430{
431 /*
432 * All ports have same number of pkeys.
433 */
434 return rdi->dparms.npkeys;
435}
436
437/*
Mike Marciniszyn8b103e92016-05-24 12:50:40 -0700438 * Return the max atomic suitable for determining
439 * the size of the ack ring buffer in a QP.
440 */
441static inline unsigned int rvt_max_atomic(struct rvt_dev_info *rdi)
442{
443 return rdi->dparms.max_rdma_atomic + 1;
444}
445
446/*
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -0800447 * Return the indexed PKEY from the port PKEY table.
448 */
449static inline u16 rvt_get_pkey(struct rvt_dev_info *rdi,
450 int port_index,
451 unsigned index)
452{
453 if (index >= rvt_get_npkeys(rdi))
454 return 0;
455 else
456 return rdi->ports[port_index]->pkey_table[index];
457}
458
Dennis Dalessandro3b0b3fb2016-01-22 13:00:35 -0800459/**
460 * rvt_lookup_qpn - return the QP with the given QPN
461 * @ibp: the ibport
462 * @qpn: the QP number to look up
463 *
464 * The caller must hold the rcu_read_lock(), and keep the lock until
465 * the returned qp is no longer in use.
466 */
467/* TODO: Remove this and put in rdmavt/qp.h when no longer needed by drivers */
468static inline struct rvt_qp *rvt_lookup_qpn(struct rvt_dev_info *rdi,
469 struct rvt_ibport *rvp,
470 u32 qpn) __must_hold(RCU)
471{
472 struct rvt_qp *qp = NULL;
473
474 if (unlikely(qpn <= 1)) {
475 qp = rcu_dereference(rvp->qp[qpn]);
476 } else {
477 u32 n = hash_32(qpn, rdi->qp_dev->qp_table_bits);
478
479 for (qp = rcu_dereference(rdi->qp_dev->qp_table[n]); qp;
480 qp = rcu_dereference(qp->next))
481 if (qp->ibqp.qp_num == qpn)
482 break;
483 }
484 return qp;
485}
486
Venkata Sandeep Dhanalakota11a10d42017-02-08 05:27:13 -0800487/**
488 * rvt_mod_retry_timer - mod a retry timer
489 * @qp - the QP
490 * Modify a potentially already running retry timer
491 */
492static inline void rvt_mod_retry_timer(struct rvt_qp *qp)
493{
494 struct ib_qp *ibqp = &qp->ibqp;
495 struct rvt_dev_info *rdi = ib_to_rvt(ibqp->device);
496
497 lockdep_assert_held(&qp->s_lock);
498 qp->s_flags |= RVT_S_TIMER;
499 /* 4.096 usec. * (1 << qp->timeout) */
500 mod_timer(&qp->s_timer, jiffies + qp->timeout_jiffies +
501 rdi->busy_jiffies);
502}
503
Dennis Dalessandroff6acd62016-01-22 13:04:45 -0800504struct rvt_dev_info *rvt_alloc_device(size_t size, int nports);
Jubin Johnea0e4ce2016-04-20 06:05:24 -0700505void rvt_dealloc_device(struct rvt_dev_info *rdi);
Dennis Dalessandro01946212016-01-06 09:50:24 -0800506int rvt_register_device(struct rvt_dev_info *rvd);
507void rvt_unregister_device(struct rvt_dev_info *rvd);
Dasaratharaman Chandramouli90898852017-04-29 14:41:18 -0400508int rvt_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
Dennis Dalessandro38ce2c62016-01-06 10:05:12 -0800509int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port,
Dennis Dalessandrof1badc72016-02-03 14:15:02 -0800510 int port_index, u16 *pkey_table);
Jianxin Xionge8f8b092016-07-25 13:38:19 -0700511int rvt_fast_reg_mr(struct rvt_qp *qp, struct ib_mr *ibmr, u32 key,
512 int access);
513int rvt_invalidate_rkey(struct rvt_qp *qp, u32 rkey);
Dennis Dalessandro7b1e2092016-01-06 10:03:31 -0800514int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
515 u32 len, u64 vaddr, u32 rkey, int acc);
516int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd,
517 struct rvt_sge *isge, struct ib_sge *sge, int acc);
Michael J. Ruhlaad9ff92017-04-09 10:15:57 -0700518struct rvt_mcast *rvt_mcast_find(struct rvt_ibport *ibp, union ib_gid *mgid,
519 u16 lid);
Dennis Dalessandro822514d2016-01-06 10:04:57 -0800520
Dennis Dalessandro01946212016-01-06 09:50:24 -0800521#endif /* DEF_RDMA_VT_H */