Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 1 | #ifndef DEF_RDMA_VT_H |
| 2 | #define DEF_RDMA_VT_H |
| 3 | |
| 4 | /* |
Dennis Dalessandro | fe31419 | 2016-01-22 13:04:58 -0800 | [diff] [blame] | 5 | * Copyright(c) 2016 Intel Corporation. |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 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 | |
Dennis Dalessandro | f3d01bb | 2016-01-06 10:04:13 -0800 | [diff] [blame] | 56 | #include <linux/spinlock.h> |
| 57 | #include <linux/list.h> |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 58 | #include <linux/hash.h> |
Dennis Dalessandro | b4e6439 | 2016-01-06 10:04:31 -0800 | [diff] [blame] | 59 | #include <rdma/ib_verbs.h> |
| 60 | #include <rdma/rdmavt_mr.h> |
| 61 | #include <rdma/rdmavt_qp.h> |
Kamal Heib | f2f3421 | 2016-01-06 10:03:47 -0800 | [diff] [blame] | 62 | |
Dennis Dalessandro | 38ce2c6 | 2016-01-06 10:05:12 -0800 | [diff] [blame] | 63 | #define RVT_MAX_PKEY_VALUES 16 |
| 64 | |
Dennis Dalessandro | f3d01bb | 2016-01-06 10:04:13 -0800 | [diff] [blame] | 65 | struct 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 Dalessandro | 38ce2c6 | 2016-01-06 10:05:12 -0800 | [diff] [blame] | 121 | /* |
| 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 Dalessandro | 3711baf | 2016-01-22 13:04:51 -0800 | [diff] [blame] | 129 | struct rvt_ah *sm_ah; |
Dennis Dalessandro | f3d01bb | 2016-01-06 10:04:13 -0800 | [diff] [blame] | 130 | }; |
| 131 | |
Dennis Dalessandro | 6f6387a | 2016-01-22 13:00:15 -0800 | [diff] [blame] | 132 | #define RVT_CQN_MAX 16 /* maximum length of cq name */ |
| 133 | |
Dennis Dalessandro | ca889e8 | 2016-01-06 10:02:41 -0800 | [diff] [blame] | 134 | /* |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 135 | * Things that are driver specific, module parameters in hfi1 and qib |
| 136 | */ |
| 137 | struct rvt_driver_params { |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 138 | struct ib_device_attr props; |
| 139 | |
| 140 | /* |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 141 | * Anything driver specific that is not covered by props |
| 142 | * For instance special module parameters. Goes here. |
| 143 | */ |
Dennis Dalessandro | 7b1e209 | 2016-01-06 10:03:31 -0800 | [diff] [blame] | 144 | unsigned int lkey_table_size; |
Dennis Dalessandro | 0acb0cc | 2016-01-06 10:04:46 -0800 | [diff] [blame] | 145 | unsigned int qp_table_size; |
| 146 | int qpn_start; |
| 147 | int qpn_inc; |
| 148 | int qpn_res_start; |
| 149 | int qpn_res_end; |
Dennis Dalessandro | f3d01bb | 2016-01-06 10:04:13 -0800 | [diff] [blame] | 150 | int nports; |
Dennis Dalessandro | 38ce2c6 | 2016-01-06 10:05:12 -0800 | [diff] [blame] | 151 | int npkeys; |
Dennis Dalessandro | 6f6387a | 2016-01-22 13:00:15 -0800 | [diff] [blame] | 152 | char cq_name[RVT_CQN_MAX]; |
| 153 | int node; |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 154 | int psn_mask; |
| 155 | int psn_shift; |
| 156 | int psn_modify_mask; |
Harish Chegondi | 61a650c | 2016-02-03 14:15:20 -0800 | [diff] [blame] | 157 | u32 core_cap_flags; |
| 158 | u32 max_mad_size; |
Mike Marciniszyn | 4c0b653 | 2016-05-24 12:50:34 -0700 | [diff] [blame^] | 159 | u8 qos_shift; |
| 160 | u8 max_rdma_atomic; |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 161 | }; |
| 162 | |
| 163 | /* Protection domain */ |
| 164 | struct rvt_pd { |
| 165 | struct ib_pd ibpd; |
| 166 | int user; /* non-zero if created from user space */ |
| 167 | }; |
| 168 | |
Kamal Heib | 119a8e7 | 2016-01-06 10:03:59 -0800 | [diff] [blame] | 169 | /* Address handle */ |
| 170 | struct rvt_ah { |
| 171 | struct ib_ah ibah; |
| 172 | struct ib_ah_attr attr; |
| 173 | atomic_t refcount; |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 174 | u8 vl; |
| 175 | u8 log_pmtu; |
| 176 | }; |
| 177 | |
| 178 | struct rvt_dev_info; |
Mike Marciniszyn | 46a80d6 | 2016-02-14 12:10:04 -0800 | [diff] [blame] | 179 | struct rvt_swqe; |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 180 | struct rvt_driver_provided { |
| 181 | /* |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 182 | * Which functions are required depends on which verbs rdmavt is |
| 183 | * providing and which verbs the driver is overriding. See |
| 184 | * check_support() for details. |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 185 | */ |
| 186 | |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 187 | /* Passed to ib core registration. Callback to create syfs files */ |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 188 | int (*port_callback)(struct ib_device *, u8, struct kobject *); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 189 | |
| 190 | /* |
| 191 | * Returns a string to represent the device for which is being |
| 192 | * registered. This is primarily used for error and debug messages on |
| 193 | * the console. |
| 194 | */ |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 195 | const char * (*get_card_name)(struct rvt_dev_info *rdi); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 196 | |
| 197 | /* |
| 198 | * Returns a pointer to the undelying hardware's PCI device. This is |
| 199 | * used to display information as to what hardware is being referenced |
| 200 | * in an output message |
| 201 | */ |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 202 | struct pci_dev * (*get_pci_dev)(struct rvt_dev_info *rdi); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 203 | |
| 204 | /* |
| 205 | * Allocate a private queue pair data structure for driver specific |
| 206 | * information which is opaque to rdmavt. |
| 207 | */ |
Mike Marciniszyn | d2b8d4d | 2016-01-22 12:50:43 -0800 | [diff] [blame] | 208 | void * (*qp_priv_alloc)(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
| 209 | gfp_t gfp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 210 | |
| 211 | /* |
| 212 | * Free the driver's private qp structure. |
| 213 | */ |
Dennis Dalessandro | 515667f | 2016-01-22 12:50:17 -0800 | [diff] [blame] | 214 | void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 215 | |
| 216 | /* |
| 217 | * Inform the driver the particular qp in quesiton has been reset so |
| 218 | * that it can clean up anything it needs to. |
| 219 | */ |
Dennis Dalessandro | 515667f | 2016-01-22 12:50:17 -0800 | [diff] [blame] | 220 | void (*notify_qp_reset)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 221 | |
| 222 | /* |
| 223 | * Give the driver a notice that there is send work to do. It is up to |
| 224 | * the driver to generally push the packets out, this just queues the |
| 225 | * work with the driver. There are two variants here. The no_lock |
| 226 | * version requires the s_lock not to be held. The other assumes the |
| 227 | * s_lock is held. |
| 228 | */ |
Dennis Dalessandro | bfbac09 | 2016-01-22 13:00:22 -0800 | [diff] [blame] | 229 | void (*schedule_send)(struct rvt_qp *qp); |
Mike Marciniszyn | 46a80d6 | 2016-02-14 12:10:04 -0800 | [diff] [blame] | 230 | void (*schedule_send_no_lock)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 231 | |
| 232 | /* |
| 233 | * Sometimes rdmavt needs to kick the driver's send progress. That is |
| 234 | * done by this call back. |
| 235 | */ |
Dennis Dalessandro | bfbac09 | 2016-01-22 13:00:22 -0800 | [diff] [blame] | 236 | void (*do_send)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 237 | |
| 238 | /* |
| 239 | * Get a path mtu from the driver based on qp attributes. |
| 240 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 241 | int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
| 242 | struct ib_qp_attr *attr); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 243 | |
| 244 | /* |
| 245 | * Notify driver that it needs to flush any outstanding IO requests that |
| 246 | * are waiting on a qp. |
| 247 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 248 | void (*flush_qp_waiters)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 249 | |
| 250 | /* |
| 251 | * Notify driver to stop its queue of sending packets. Nothing else |
| 252 | * should be posted to the queue pair after this has been called. |
| 253 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 254 | void (*stop_send_queue)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 255 | |
| 256 | /* |
| 257 | * Have the drivr drain any in progress operations |
| 258 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 259 | void (*quiesce_qp)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 260 | |
| 261 | /* |
| 262 | * Inform the driver a qp has went to error state. |
| 263 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 264 | void (*notify_error_qp)(struct rvt_qp *qp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 265 | |
| 266 | /* |
| 267 | * Get an MTU for a qp. |
| 268 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 269 | u32 (*mtu_from_qp)(struct rvt_dev_info *rdi, struct rvt_qp *qp, |
| 270 | u32 pmtu); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 271 | /* |
| 272 | * Convert an mtu to a path mtu |
| 273 | */ |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 274 | int (*mtu_to_path_mtu)(u32 mtu); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 275 | |
| 276 | /* |
| 277 | * Get the guid of a port in big endian byte order |
| 278 | */ |
Dennis Dalessandro | 1f02499 | 2016-02-03 14:15:11 -0800 | [diff] [blame] | 279 | int (*get_guid_be)(struct rvt_dev_info *rdi, struct rvt_ibport *rvp, |
| 280 | int guid_index, __be64 *guid); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 281 | |
| 282 | /* |
| 283 | * Query driver for the state of the port. |
| 284 | */ |
Harish Chegondi | 61a650c | 2016-02-03 14:15:20 -0800 | [diff] [blame] | 285 | int (*query_port_state)(struct rvt_dev_info *rdi, u8 port_num, |
| 286 | struct ib_port_attr *props); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 287 | |
| 288 | /* |
| 289 | * Tell driver to shutdown a port |
| 290 | */ |
Harish Chegondi | 61a650c | 2016-02-03 14:15:20 -0800 | [diff] [blame] | 291 | int (*shut_down_port)(struct rvt_dev_info *rdi, u8 port_num); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 292 | |
| 293 | /* Tell driver to send a trap for changed port capabilities */ |
Harish Chegondi | 61a650c | 2016-02-03 14:15:20 -0800 | [diff] [blame] | 294 | void (*cap_mask_chg)(struct rvt_dev_info *rdi, u8 port_num); |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 295 | |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 296 | /* |
| 297 | * The following functions can be safely ignored completely. Any use of |
| 298 | * these is checked for NULL before blindly calling. Rdmavt should also |
| 299 | * be functional if drivers omit these. |
| 300 | */ |
| 301 | |
| 302 | /* Called to inform the driver that all qps should now be freed. */ |
| 303 | unsigned (*free_all_qps)(struct rvt_dev_info *rdi); |
| 304 | |
| 305 | /* Driver specific AH validation */ |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 306 | int (*check_ah)(struct ib_device *, struct ib_ah_attr *); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 307 | |
| 308 | /* Inform the driver a new AH has been created */ |
Dennis Dalessandro | b036db8 | 2016-01-06 10:04:23 -0800 | [diff] [blame] | 309 | void (*notify_new_ah)(struct ib_device *, struct ib_ah_attr *, |
| 310 | struct rvt_ah *); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 311 | |
| 312 | /* Let the driver pick the next queue pair number*/ |
Dennis Dalessandro | 515667f | 2016-01-22 12:50:17 -0800 | [diff] [blame] | 313 | int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, |
Dennis Dalessandro | f1badc7 | 2016-02-03 14:15:02 -0800 | [diff] [blame] | 314 | enum ib_qp_type type, u8 port_num, gfp_t gfp); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 315 | |
| 316 | /* Determine if its safe or allowed to modify the qp */ |
Ira Weiny | e85ec33 | 2016-01-22 13:04:38 -0800 | [diff] [blame] | 317 | int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, |
| 318 | int attr_mask, struct ib_udata *udata); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 319 | |
| 320 | /* Driver specific QP modification/notification-of */ |
Ira Weiny | e85ec33 | 2016-01-22 13:04:38 -0800 | [diff] [blame] | 321 | void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, |
| 322 | int attr_mask, struct ib_udata *udata); |
Dennis Dalessandro | 3711baf | 2016-01-22 13:04:51 -0800 | [diff] [blame] | 323 | |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 324 | /* Driver specific work request checking */ |
Mike Marciniszyn | 46a80d6 | 2016-02-14 12:10:04 -0800 | [diff] [blame] | 325 | int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe); |
Ira Weiny | 60c30f5 | 2016-02-03 14:14:45 -0800 | [diff] [blame] | 326 | |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 327 | /* Notify driver a mad agent has been created */ |
Dennis Dalessandro | 3711baf | 2016-01-22 13:04:51 -0800 | [diff] [blame] | 328 | void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 329 | |
| 330 | /* Notify driver a mad agent has been removed */ |
Dennis Dalessandro | 3711baf | 2016-01-22 13:04:51 -0800 | [diff] [blame] | 331 | void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx); |
Dennis Dalessandro | 1348d70 | 2016-02-14 12:10:37 -0800 | [diff] [blame] | 332 | |
Kamal Heib | 119a8e7 | 2016-01-06 10:03:59 -0800 | [diff] [blame] | 333 | }; |
| 334 | |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 335 | struct rvt_dev_info { |
Dennis Dalessandro | 7b1e209 | 2016-01-06 10:03:31 -0800 | [diff] [blame] | 336 | struct ib_device ibdev; /* Keep this first. Nothing above here */ |
| 337 | |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 338 | /* |
| 339 | * Prior to calling for registration the driver will be responsible for |
| 340 | * allocating space for this structure. |
| 341 | * |
| 342 | * The driver will also be responsible for filling in certain members of |
Harish Chegondi | feaeb6e | 2016-01-22 12:50:36 -0800 | [diff] [blame] | 343 | * dparms.props. The driver needs to fill in dparms exactly as it would |
| 344 | * want values reported to a ULP. This will be returned to the caller |
| 345 | * in rdmavt's device. The driver should also therefore refrain from |
| 346 | * modifying this directly after registration with rdmavt. |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 347 | */ |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 348 | |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 349 | /* Driver specific properties */ |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 350 | struct rvt_driver_params dparms; |
Dennis Dalessandro | b1070a7 | 2016-01-06 09:52:19 -0800 | [diff] [blame] | 351 | |
Dennis Dalessandro | b92a756 | 2016-01-06 10:01:42 -0800 | [diff] [blame] | 352 | struct rvt_mregion __rcu *dma_mr; |
| 353 | struct rvt_lkey_table lkey_table; |
| 354 | |
Dennis Dalessandro | aec5778 | 2016-01-06 10:02:52 -0800 | [diff] [blame] | 355 | /* Driver specific helper functions */ |
| 356 | struct rvt_driver_provided driver_f; |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 357 | |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 358 | /* Internal use */ |
| 359 | int n_pds_allocated; |
| 360 | spinlock_t n_pds_lock; /* Protect pd allocated count */ |
Dennis Dalessandro | 0b8a8aa | 2016-01-06 10:03:07 -0800 | [diff] [blame] | 361 | |
Kamal Heib | 119a8e7 | 2016-01-06 10:03:59 -0800 | [diff] [blame] | 362 | int n_ahs_allocated; |
| 363 | spinlock_t n_ahs_lock; /* Protect ah allocated count */ |
| 364 | |
Jubin John | b8f881b | 2016-02-03 14:14:36 -0800 | [diff] [blame] | 365 | u32 n_srqs_allocated; |
| 366 | spinlock_t n_srqs_lock; /* Protect srqs allocated count */ |
| 367 | |
Dennis Dalessandro | 0b8a8aa | 2016-01-06 10:03:07 -0800 | [diff] [blame] | 368 | int flags; |
Dennis Dalessandro | f3d01bb | 2016-01-06 10:04:13 -0800 | [diff] [blame] | 369 | struct rvt_ibport **ports; |
Dennis Dalessandro | 0acb0cc | 2016-01-06 10:04:46 -0800 | [diff] [blame] | 370 | |
Dennis Dalessandro | 515667f | 2016-01-22 12:50:17 -0800 | [diff] [blame] | 371 | /* QP */ |
Dennis Dalessandro | 0acb0cc | 2016-01-06 10:04:46 -0800 | [diff] [blame] | 372 | struct rvt_qp_ibdev *qp_dev; |
Dennis Dalessandro | 515667f | 2016-01-22 12:50:17 -0800 | [diff] [blame] | 373 | u32 n_qps_allocated; /* number of QPs allocated for device */ |
Vennila Megavannan | bfee5e3 | 2016-02-09 14:29:49 -0800 | [diff] [blame] | 374 | u32 n_rc_qps; /* number of RC QPs allocated for device */ |
| 375 | u32 busy_jiffies; /* timeout scaling based on RC QP count */ |
| 376 | spinlock_t n_qps_lock; /* protect qps, rc qps and busy jiffy counts */ |
Dennis Dalessandro | 822514d | 2016-01-06 10:04:57 -0800 | [diff] [blame] | 377 | |
| 378 | /* memory maps */ |
| 379 | struct list_head pending_mmaps; |
| 380 | spinlock_t mmap_offset_lock; /* protect mmap_offset */ |
| 381 | u32 mmap_offset; |
| 382 | spinlock_t pending_lock; /* protect pending mmap list */ |
Dennis Dalessandro | 6f6387a | 2016-01-22 13:00:15 -0800 | [diff] [blame] | 383 | |
| 384 | /* CQ */ |
| 385 | struct kthread_worker *worker; /* per device cq worker */ |
| 386 | u32 n_cqs_allocated; /* number of CQs allocated for device */ |
| 387 | spinlock_t n_cqs_lock; /* protect count of in use cqs */ |
Dennis Dalessandro | 4e74080 | 2016-01-22 13:00:55 -0800 | [diff] [blame] | 388 | |
| 389 | /* Multicast */ |
| 390 | u32 n_mcast_grps_allocated; /* number of mcast groups allocated */ |
| 391 | spinlock_t n_mcast_grps_lock; |
| 392 | |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 393 | }; |
| 394 | |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 395 | static inline struct rvt_pd *ibpd_to_rvtpd(struct ib_pd *ibpd) |
| 396 | { |
| 397 | return container_of(ibpd, struct rvt_pd, ibpd); |
| 398 | } |
| 399 | |
Kamal Heib | 119a8e7 | 2016-01-06 10:03:59 -0800 | [diff] [blame] | 400 | static inline struct rvt_ah *ibah_to_rvtah(struct ib_ah *ibah) |
| 401 | { |
| 402 | return container_of(ibah, struct rvt_ah, ibah); |
| 403 | } |
| 404 | |
Dennis Dalessandro | 8afd32e | 2016-01-06 09:51:48 -0800 | [diff] [blame] | 405 | static inline struct rvt_dev_info *ib_to_rvt(struct ib_device *ibdev) |
| 406 | { |
| 407 | return container_of(ibdev, struct rvt_dev_info, ibdev); |
| 408 | } |
| 409 | |
Dennis Dalessandro | 70a1a35 | 2016-01-06 10:04:06 -0800 | [diff] [blame] | 410 | static inline struct rvt_srq *ibsrq_to_rvtsrq(struct ib_srq *ibsrq) |
| 411 | { |
| 412 | return container_of(ibsrq, struct rvt_srq, ibsrq); |
| 413 | } |
| 414 | |
Dennis Dalessandro | bfbac09 | 2016-01-22 13:00:22 -0800 | [diff] [blame] | 415 | static inline struct rvt_qp *ibqp_to_rvtqp(struct ib_qp *ibqp) |
| 416 | { |
| 417 | return container_of(ibqp, struct rvt_qp, ibqp); |
| 418 | } |
| 419 | |
Dennis Dalessandro | 38ce2c6 | 2016-01-06 10:05:12 -0800 | [diff] [blame] | 420 | static inline unsigned rvt_get_npkeys(struct rvt_dev_info *rdi) |
| 421 | { |
| 422 | /* |
| 423 | * All ports have same number of pkeys. |
| 424 | */ |
| 425 | return rdi->dparms.npkeys; |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * Return the indexed PKEY from the port PKEY table. |
| 430 | */ |
| 431 | static inline u16 rvt_get_pkey(struct rvt_dev_info *rdi, |
| 432 | int port_index, |
| 433 | unsigned index) |
| 434 | { |
| 435 | if (index >= rvt_get_npkeys(rdi)) |
| 436 | return 0; |
| 437 | else |
| 438 | return rdi->ports[port_index]->pkey_table[index]; |
| 439 | } |
| 440 | |
Dennis Dalessandro | 3b0b3fb | 2016-01-22 13:00:35 -0800 | [diff] [blame] | 441 | /** |
| 442 | * rvt_lookup_qpn - return the QP with the given QPN |
| 443 | * @ibp: the ibport |
| 444 | * @qpn: the QP number to look up |
| 445 | * |
| 446 | * The caller must hold the rcu_read_lock(), and keep the lock until |
| 447 | * the returned qp is no longer in use. |
| 448 | */ |
| 449 | /* TODO: Remove this and put in rdmavt/qp.h when no longer needed by drivers */ |
| 450 | static inline struct rvt_qp *rvt_lookup_qpn(struct rvt_dev_info *rdi, |
| 451 | struct rvt_ibport *rvp, |
| 452 | u32 qpn) __must_hold(RCU) |
| 453 | { |
| 454 | struct rvt_qp *qp = NULL; |
| 455 | |
| 456 | if (unlikely(qpn <= 1)) { |
| 457 | qp = rcu_dereference(rvp->qp[qpn]); |
| 458 | } else { |
| 459 | u32 n = hash_32(qpn, rdi->qp_dev->qp_table_bits); |
| 460 | |
| 461 | for (qp = rcu_dereference(rdi->qp_dev->qp_table[n]); qp; |
| 462 | qp = rcu_dereference(qp->next)) |
| 463 | if (qp->ibqp.qp_num == qpn) |
| 464 | break; |
| 465 | } |
| 466 | return qp; |
| 467 | } |
| 468 | |
Dennis Dalessandro | ff6acd6 | 2016-01-22 13:04:45 -0800 | [diff] [blame] | 469 | struct rvt_dev_info *rvt_alloc_device(size_t size, int nports); |
Jubin John | ea0e4ce | 2016-04-20 06:05:24 -0700 | [diff] [blame] | 470 | void rvt_dealloc_device(struct rvt_dev_info *rdi); |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 471 | int rvt_register_device(struct rvt_dev_info *rvd); |
| 472 | void rvt_unregister_device(struct rvt_dev_info *rvd); |
Kamal Heib | 119a8e7 | 2016-01-06 10:03:59 -0800 | [diff] [blame] | 473 | int rvt_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr); |
Dennis Dalessandro | 38ce2c6 | 2016-01-06 10:05:12 -0800 | [diff] [blame] | 474 | int rvt_init_port(struct rvt_dev_info *rdi, struct rvt_ibport *port, |
Dennis Dalessandro | f1badc7 | 2016-02-03 14:15:02 -0800 | [diff] [blame] | 475 | int port_index, u16 *pkey_table); |
Dennis Dalessandro | 7b1e209 | 2016-01-06 10:03:31 -0800 | [diff] [blame] | 476 | int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge, |
| 477 | u32 len, u64 vaddr, u32 rkey, int acc); |
| 478 | int rvt_lkey_ok(struct rvt_lkey_table *rkt, struct rvt_pd *pd, |
| 479 | struct rvt_sge *isge, struct ib_sge *sge, int acc); |
Dennis Dalessandro | 4e74080 | 2016-01-22 13:00:55 -0800 | [diff] [blame] | 480 | struct rvt_mcast *rvt_mcast_find(struct rvt_ibport *ibp, union ib_gid *mgid); |
Dennis Dalessandro | 822514d | 2016-01-06 10:04:57 -0800 | [diff] [blame] | 481 | |
Dennis Dalessandro | 0194621 | 2016-01-06 09:50:24 -0800 | [diff] [blame] | 482 | #endif /* DEF_RDMA_VT_H */ |