drivers/infiniband/hw/qib/qib_verbs.h

   1 /*
   2  * Copyright (c) 2012 - 2018 Intel Corporation.  All rights reserved.
   3  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
   4  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  */
  34
  35 #ifndef QIB_VERBS_H
  36 #define QIB_VERBS_H
  37
  38 #include <linux/types.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/kernel.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/kref.h>
  43 #include <linux/workqueue.h>
  44 #include <linux/kthread.h>
  45 #include <linux/completion.h>
  46 #include <rdma/ib_pack.h>
  47 #include <rdma/ib_user_verbs.h>
  48 #include <rdma/ib_hdrs.h>
  49 #include <rdma/rdmavt_qp.h>
  50 #include <rdma/rdmavt_cq.h>
  51
  52 struct qib_ctxtdata;
  53 struct qib_pportdata;
  54 struct qib_devdata;
  55 struct qib_verbs_txreq;
  56
  57 #define QIB_MAX_RDMA_ATOMIC     16
  58 #define QIB_GUIDS_PER_PORT      5
  59 #define QIB_PSN_SHIFT           8
  60
  61 /*
  62  * Increment this value if any changes that break userspace ABI
  63  * compatibility are made.
  64  */
  65 #define QIB_UVERBS_ABI_VERSION       2
  66
  67 /* IB Performance Manager status values */
  68 #define IB_PMA_SAMPLE_STATUS_DONE       0x00
  69 #define IB_PMA_SAMPLE_STATUS_STARTED    0x01
  70 #define IB_PMA_SAMPLE_STATUS_RUNNING    0x02
  71
  72 /* Mandatory IB performance counter select values. */
  73 #define IB_PMA_PORT_XMIT_DATA   cpu_to_be16(0x0001)
  74 #define IB_PMA_PORT_RCV_DATA    cpu_to_be16(0x0002)
  75 #define IB_PMA_PORT_XMIT_PKTS   cpu_to_be16(0x0003)
  76 #define IB_PMA_PORT_RCV_PKTS    cpu_to_be16(0x0004)
  77 #define IB_PMA_PORT_XMIT_WAIT   cpu_to_be16(0x0005)
  78
  79 #define QIB_VENDOR_IPG          cpu_to_be16(0xFFA0)
  80
  81 #define IB_DEFAULT_GID_PREFIX   cpu_to_be64(0xfe80000000000000ULL)
  82
  83 /* Values for set/get portinfo VLCap OperationalVLs */
  84 #define IB_VL_VL0       1
  85 #define IB_VL_VL0_1     2
  86 #define IB_VL_VL0_3     3
  87 #define IB_VL_VL0_7     4
  88 #define IB_VL_VL0_14    5
  89
  90 static inline int qib_num_vls(int vls)
  91 {
  92         switch (vls) {
  93         default:
  94         case IB_VL_VL0:
  95                 return 1;
  96         case IB_VL_VL0_1:
  97                 return 2;
  98         case IB_VL_VL0_3:
  99                 return 4;
 100         case IB_VL_VL0_7:
 101                 return 8;
 102         case IB_VL_VL0_14:
 103                 return 15;
 104         }
 105 }
 106
 107 struct qib_pio_header {
 108         __le32 pbc[2];
 109         struct ib_header hdr;
 110 } __packed;
 111
 112 /*
 113  * qib specific data structure that will be hidden from rvt after the queue pair
 114  * is made common.
 115  */
 116 struct qib_qp_priv {
 117         struct ib_header *s_hdr;        /* next packet header to send */
 118         struct list_head iowait;        /* link for wait PIO buf */
 119         atomic_t s_dma_busy;
 120         struct qib_verbs_txreq *s_tx;
 121         struct work_struct s_work;
 122         wait_queue_head_t wait_dma;
 123         struct rvt_qp *owner;
 124 };
 125
 126 #define QIB_PSN_CREDIT  16
 127
 128 struct qib_opcode_stats {
 129         u64 n_packets;          /* number of packets */
 130         u64 n_bytes;            /* total number of bytes */
 131 };
 132
 133 struct qib_opcode_stats_perctx {
 134         struct qib_opcode_stats stats[128];
 135 };
 136
 137 struct qib_pma_counters {
 138         u64 n_unicast_xmit;     /* total unicast packets sent */
 139         u64 n_unicast_rcv;      /* total unicast packets received */
 140         u64 n_multicast_xmit;   /* total multicast packets sent */
 141         u64 n_multicast_rcv;    /* total multicast packets received */
 142 };
 143
 144 struct qib_ibport {
 145         struct rvt_ibport rvp;
 146         struct rvt_ah *smi_ah;
 147         __be64 guids[QIB_GUIDS_PER_PORT - 1];   /* writable GUIDs */
 148         struct qib_pma_counters __percpu *pmastats;
 149         u64 z_unicast_xmit;     /* starting count for PMA */
 150         u64 z_unicast_rcv;      /* starting count for PMA */
 151         u64 z_multicast_xmit;   /* starting count for PMA */
 152         u64 z_multicast_rcv;    /* starting count for PMA */
 153         u64 z_symbol_error_counter;             /* starting count for PMA */
 154         u64 z_link_error_recovery_counter;      /* starting count for PMA */
 155         u64 z_link_downed_counter;              /* starting count for PMA */
 156         u64 z_port_rcv_errors;                  /* starting count for PMA */
 157         u64 z_port_rcv_remphys_errors;          /* starting count for PMA */
 158         u64 z_port_xmit_discards;               /* starting count for PMA */
 159         u64 z_port_xmit_data;                   /* starting count for PMA */
 160         u64 z_port_rcv_data;                    /* starting count for PMA */
 161         u64 z_port_xmit_packets;                /* starting count for PMA */
 162         u64 z_port_rcv_packets;                 /* starting count for PMA */
 163         u32 z_local_link_integrity_errors;      /* starting count for PMA */
 164         u32 z_excessive_buffer_overrun_errors;  /* starting count for PMA */
 165         u32 z_vl15_dropped;                     /* starting count for PMA */
 166         u8 sl_to_vl[16];
 167 };
 168
 169 struct qib_ibdev {
 170         struct rvt_dev_info rdi;
 171
 172         struct list_head piowait;       /* list for wait PIO buf */
 173         struct list_head dmawait;       /* list for wait DMA */
 174         struct list_head txwait;        /* list for wait qib_verbs_txreq */
 175         struct list_head memwait;       /* list for wait kernel memory */
 176         struct list_head txreq_free;
 177         struct timer_list mem_timer;
 178         struct qib_pio_header *pio_hdrs;
 179         dma_addr_t pio_hdrs_phys;
 180         u32 qp_rnd; /* random bytes for hash */
 181
 182         u32 n_piowait;
 183         u32 n_txwait;
 184
 185 #ifdef CONFIG_DEBUG_FS
 186         /* per HCA debugfs */
 187         struct dentry *qib_ibdev_dbg;
 188 #endif
 189 };
 190
 191 struct qib_verbs_counters {
 192         u64 symbol_error_counter;
 193         u64 link_error_recovery_counter;
 194         u64 link_downed_counter;
 195         u64 port_rcv_errors;
 196         u64 port_rcv_remphys_errors;
 197         u64 port_xmit_discards;
 198         u64 port_xmit_data;
 199         u64 port_rcv_data;
 200         u64 port_xmit_packets;
 201         u64 port_rcv_packets;
 202         u32 local_link_integrity_errors;
 203         u32 excessive_buffer_overrun_errors;
 204         u32 vl15_dropped;
 205 };
 206
 207 static inline struct qib_ibdev *to_idev(struct ib_device *ibdev)
 208 {
 209         struct rvt_dev_info *rdi;
 210
 211         rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
 212         return container_of(rdi, struct qib_ibdev, rdi);
 213 }
 214
 215 /*
 216  * Send if not busy or waiting for I/O and either
 217  * a RC response is pending or we can process send work requests.
 218  */
 219 static inline int qib_send_ok(struct rvt_qp *qp)
 220 {
 221         return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&
 222                 (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||
 223                  !(qp->s_flags & RVT_S_ANY_WAIT_SEND));
 224 }
 225
 226 bool _qib_schedule_send(struct rvt_qp *qp);
 227 bool qib_schedule_send(struct rvt_qp *qp);
 228
 229 static inline int qib_pkey_ok(u16 pkey1, u16 pkey2)
 230 {
 231         u16 p1 = pkey1 & 0x7FFF;
 232         u16 p2 = pkey2 & 0x7FFF;
 233
 234         /*
 235          * Low 15 bits must be non-zero and match, and
 236          * one of the two must be a full member.
 237          */
 238         return p1 && p1 == p2 && ((__s16)pkey1 < 0 || (__s16)pkey2 < 0);
 239 }
 240
 241 void qib_bad_pkey(struct qib_ibport *ibp, u32 key, u32 sl,
 242                   u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
 243 void qib_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
 244 void qib_sys_guid_chg(struct qib_ibport *ibp);
 245 void qib_node_desc_chg(struct qib_ibport *ibp);
 246 int qib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
 247                     const struct ib_wc *in_wc, const struct ib_grh *in_grh,
 248                     const struct ib_mad *in, struct ib_mad *out,
 249                     size_t *out_mad_size, u16 *out_mad_pkey_index);
 250 void qib_notify_create_mad_agent(struct rvt_dev_info *rdi, int port_idx);
 251 void qib_notify_free_mad_agent(struct rvt_dev_info *rdi, int port_idx);
 252
 253 /*
 254  * Compare the lower 24 bits of the two values.
 255  * Returns an integer <, ==, or > than zero.
 256  */
 257 static inline int qib_cmp24(u32 a, u32 b)
 258 {
 259         return (((int) a) - ((int) b)) << 8;
 260 }
 261
 262 int qib_snapshot_counters(struct qib_pportdata *ppd, u64 *swords,
 263                           u64 *rwords, u64 *spkts, u64 *rpkts,
 264                           u64 *xmit_wait);
 265
 266 int qib_get_counters(struct qib_pportdata *ppd,
 267                      struct qib_verbs_counters *cntrs);
 268
 269 /*
 270  * Functions provided by qib driver for rdmavt to use
 271  */
 272 unsigned qib_free_all_qps(struct rvt_dev_info *rdi);
 273 void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp);
 274 void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp);
 275 void qib_notify_qp_reset(struct rvt_qp *qp);
 276 int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
 277                   enum ib_qp_type type, u8 port);
 278 void qib_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
 279 #ifdef CONFIG_DEBUG_FS
 280
 281 void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter);
 282
 283 #endif
 284
 285 unsigned qib_pkt_delay(u32 plen, u8 snd_mult, u8 rcv_mult);
 286
 287 void qib_verbs_sdma_desc_avail(struct qib_pportdata *ppd, unsigned avail);
 288
 289 void qib_put_txreq(struct qib_verbs_txreq *tx);
 290
 291 int qib_verbs_send(struct rvt_qp *qp, struct ib_header *hdr,
 292                    u32 hdrwords, struct rvt_sge_state *ss, u32 len);
 293
 294 void qib_uc_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
 295                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 296
 297 void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr,
 298                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 299
 300 int qib_check_ah(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
 301
 302 int qib_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe,
 303                        bool *call_send);
 304
 305 struct ib_ah *qib_create_qp0_ah(struct qib_ibport *ibp, u16 dlid);
 306
 307 void qib_rc_rnr_retry(unsigned long arg);
 308
 309 void qib_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
 310
 311 int qib_post_ud_send(struct rvt_qp *qp, const struct ib_send_wr *wr);
 312
 313 void qib_ud_rcv(struct qib_ibport *ibp, struct ib_header *hdr,
 314                 int has_grh, void *data, u32 tlen, struct rvt_qp *qp);
 315
 316 void mr_rcu_callback(struct rcu_head *list);
 317
 318 void qib_migrate_qp(struct rvt_qp *qp);
 319
 320 int qib_ruc_check_hdr(struct qib_ibport *ibp, struct ib_header *hdr,
 321                       int has_grh, struct rvt_qp *qp, u32 bth0);
 322
 323 u32 qib_make_grh(struct qib_ibport *ibp, struct ib_grh *hdr,
 324                  const struct ib_global_route *grh, u32 hwords, u32 nwords);
 325
 326 void qib_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
 327                          u32 bth0, u32 bth2);
 328
 329 void _qib_do_send(struct work_struct *work);
 330
 331 void qib_do_send(struct rvt_qp *qp);
 332
 333 void qib_send_rc_ack(struct rvt_qp *qp);
 334
 335 int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags);
 336
 337 int qib_make_uc_req(struct rvt_qp *qp, unsigned long *flags);
 338
 339 int qib_make_ud_req(struct rvt_qp *qp, unsigned long *flags);
 340
 341 int qib_register_ib_device(struct qib_devdata *);
 342
 343 void qib_unregister_ib_device(struct qib_devdata *);
 344
 345 void qib_ib_rcv(struct qib_ctxtdata *, void *, void *, u32);
 346
 347 void qib_ib_piobufavail(struct qib_devdata *);
 348
 349 unsigned qib_get_npkeys(struct qib_devdata *);
 350
 351 unsigned qib_get_pkey(struct qib_ibport *, unsigned);
 352
 353 extern const enum ib_wc_opcode ib_qib_wc_opcode[];
 354
 355 /*
 356  * Below  HCA-independent IB PhysPortState values, returned
 357  * by the f_ibphys_portstate() routine.
 358  */
 359 #define IB_PHYSPORTSTATE_SLEEP 1
 360 #define IB_PHYSPORTSTATE_POLL 2
 361 #define IB_PHYSPORTSTATE_DISABLED 3
 362 #define IB_PHYSPORTSTATE_CFG_TRAIN 4
 363 #define IB_PHYSPORTSTATE_LINKUP 5
 364 #define IB_PHYSPORTSTATE_LINK_ERR_RECOVER 6
 365 #define IB_PHYSPORTSTATE_CFG_DEBOUNCE 8
 366 #define IB_PHYSPORTSTATE_CFG_IDLE 0xB
 367 #define IB_PHYSPORTSTATE_RECOVERY_RETRAIN 0xC
 368 #define IB_PHYSPORTSTATE_RECOVERY_WAITRMT 0xE
 369 #define IB_PHYSPORTSTATE_RECOVERY_IDLE 0xF
 370 #define IB_PHYSPORTSTATE_CFG_ENH 0x10
 371 #define IB_PHYSPORTSTATE_CFG_WAIT_ENH 0x13
 372
 373 extern const int ib_rvt_state_ops[];
 374
 375 extern __be64 ib_qib_sys_image_guid;    /* in network order */
 376
 377 extern unsigned int ib_rvt_lkey_table_size;
 378
 379 extern unsigned int ib_qib_max_cqes;
 380
 381 extern unsigned int ib_qib_max_cqs;
 382
 383 extern unsigned int ib_qib_max_qp_wrs;
 384
 385 extern unsigned int ib_qib_max_qps;
 386
 387 extern unsigned int ib_qib_max_sges;
 388
 389 extern unsigned int ib_qib_max_mcast_grps;
 390
 391 extern unsigned int ib_qib_max_mcast_qp_attached;
 392
 393 extern unsigned int ib_qib_max_srqs;
 394
 395 extern unsigned int ib_qib_max_srq_sges;
 396
 397 extern unsigned int ib_qib_max_srq_wrs;
 398
 399 extern const u32 ib_qib_rnr_table[];
 400
 401 extern const struct rvt_operation_params qib_post_parms[];
 402
 403 #endif                          /* QIB_VERBS_H */