1 /* 2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * - Redistributions in binary form must reproduce the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer in the documentation and/or other materials 20 * provided with the distribution. 21 * 22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 25 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 26 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 27 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 29 * SOFTWARE. 30 */ 31 #ifndef __IW_CXGB4_H__ 32 #define __IW_CXGB4_H__ 33 34 #include <linux/mutex.h> 35 #include <linux/list.h> 36 #include <linux/spinlock.h> 37 #include <linux/xarray.h> 38 #include <linux/completion.h> 39 #include <linux/netdevice.h> 40 #include <linux/sched/mm.h> 41 #include <linux/pci.h> 42 #include <linux/dma-mapping.h> 43 #include <linux/inet.h> 44 #include <linux/wait.h> 45 #include <linux/kref.h> 46 #include <linux/timer.h> 47 #include <linux/io.h> 48 #include <linux/workqueue.h> 49 50 #include <asm/byteorder.h> 51 52 #include <net/net_namespace.h> 53 54 #include <rdma/ib_verbs.h> 55 #include <rdma/iw_cm.h> 56 #include <rdma/rdma_netlink.h> 57 #include <rdma/iw_portmap.h> 58 #include <rdma/restrack.h> 59 60 #include "cxgb4.h" 61 #include "cxgb4_uld.h" 62 #include "l2t.h" 63 #include <rdma/cxgb4-abi.h> 64 65 #define DRV_NAME "iw_cxgb4" 66 #define MOD DRV_NAME ":" 67 68 #ifdef pr_fmt 69 #undef pr_fmt 70 #endif 71 72 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 73 74 #include "t4.h" 75 76 #define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start) 77 #define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start) 78 79 static inline void *cplhdr(struct sk_buff *skb) 80 { 81 return skb->data; 82 } 83 84 #define C4IW_ID_TABLE_F_RANDOM 1 /* Pseudo-randomize the id's returned */ 85 #define C4IW_ID_TABLE_F_EMPTY 2 /* Table is initially empty */ 86 87 struct c4iw_id_table { 88 u32 flags; 89 u32 start; /* logical minimal id */ 90 u32 last; /* hint for find */ 91 u32 max; 92 spinlock_t lock; 93 unsigned long *table; 94 }; 95 96 struct c4iw_resource { 97 struct c4iw_id_table tpt_table; 98 struct c4iw_id_table qid_table; 99 struct c4iw_id_table pdid_table; 100 struct c4iw_id_table srq_table; 101 }; 102 103 struct c4iw_qid_list { 104 struct list_head entry; 105 u32 qid; 106 }; 107 108 struct c4iw_dev_ucontext { 109 struct list_head qpids; 110 struct list_head cqids; 111 struct mutex lock; 112 struct kref kref; 113 }; 114 115 enum c4iw_rdev_flags { 116 T4_FATAL_ERROR = (1<<0), 117 T4_STATUS_PAGE_DISABLED = (1<<1), 118 }; 119 120 struct c4iw_stat { 121 u64 total; 122 u64 cur; 123 u64 max; 124 u64 fail; 125 }; 126 127 struct c4iw_stats { 128 struct mutex lock; 129 struct c4iw_stat qid; 130 struct c4iw_stat pd; 131 struct c4iw_stat stag; 132 struct c4iw_stat pbl; 133 struct c4iw_stat rqt; 134 struct c4iw_stat srqt; 135 struct c4iw_stat srq; 136 struct c4iw_stat ocqp; 137 u64 db_full; 138 u64 db_empty; 139 u64 db_drop; 140 u64 db_state_transitions; 141 u64 db_fc_interruptions; 142 u64 tcam_full; 143 u64 act_ofld_conn_fails; 144 u64 pas_ofld_conn_fails; 145 u64 neg_adv; 146 }; 147 148 struct c4iw_hw_queue { 149 int t4_eq_status_entries; 150 int t4_max_eq_size; 151 int t4_max_iq_size; 152 int t4_max_rq_size; 153 int t4_max_sq_size; 154 int t4_max_qp_depth; 155 int t4_max_cq_depth; 156 int t4_stat_len; 157 }; 158 159 struct wr_log_entry { 160 ktime_t post_host_time; 161 ktime_t poll_host_time; 162 u64 post_sge_ts; 163 u64 cqe_sge_ts; 164 u64 poll_sge_ts; 165 u16 qid; 166 u16 wr_id; 167 u8 opcode; 168 u8 valid; 169 }; 170 171 struct c4iw_rdev { 172 struct c4iw_resource resource; 173 u32 qpmask; 174 u32 cqmask; 175 struct c4iw_dev_ucontext uctx; 176 struct gen_pool *pbl_pool; 177 struct gen_pool *rqt_pool; 178 struct gen_pool *ocqp_pool; 179 u32 flags; 180 struct cxgb4_lld_info lldi; 181 unsigned long bar2_pa; 182 void __iomem *bar2_kva; 183 unsigned long oc_mw_pa; 184 void __iomem *oc_mw_kva; 185 struct c4iw_stats stats; 186 struct c4iw_hw_queue hw_queue; 187 struct t4_dev_status_page *status_page; 188 atomic_t wr_log_idx; 189 struct wr_log_entry *wr_log; 190 int wr_log_size; 191 struct workqueue_struct *free_workq; 192 struct completion rqt_compl; 193 struct completion pbl_compl; 194 struct kref rqt_kref; 195 struct kref pbl_kref; 196 }; 197 198 static inline int c4iw_fatal_error(struct c4iw_rdev *rdev) 199 { 200 return rdev->flags & T4_FATAL_ERROR; 201 } 202 203 static inline int c4iw_num_stags(struct c4iw_rdev *rdev) 204 { 205 return (int)(rdev->lldi.vr->stag.size >> 5); 206 } 207 208 #define C4IW_WR_TO (60*HZ) 209 210 struct c4iw_wr_wait { 211 struct completion completion; 212 int ret; 213 struct kref kref; 214 }; 215 216 void _c4iw_free_wr_wait(struct kref *kref); 217 218 static inline void c4iw_put_wr_wait(struct c4iw_wr_wait *wr_waitp) 219 { 220 pr_debug("wr_wait %p ref before put %u\n", wr_waitp, 221 kref_read(&wr_waitp->kref)); 222 WARN_ON(kref_read(&wr_waitp->kref) == 0); 223 kref_put(&wr_waitp->kref, _c4iw_free_wr_wait); 224 } 225 226 static inline void c4iw_get_wr_wait(struct c4iw_wr_wait *wr_waitp) 227 { 228 pr_debug("wr_wait %p ref before get %u\n", wr_waitp, 229 kref_read(&wr_waitp->kref)); 230 WARN_ON(kref_read(&wr_waitp->kref) == 0); 231 kref_get(&wr_waitp->kref); 232 } 233 234 static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp) 235 { 236 wr_waitp->ret = 0; 237 init_completion(&wr_waitp->completion); 238 } 239 240 static inline void _c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret, 241 bool deref) 242 { 243 wr_waitp->ret = ret; 244 complete(&wr_waitp->completion); 245 if (deref) 246 c4iw_put_wr_wait(wr_waitp); 247 } 248 249 static inline void c4iw_wake_up_noref(struct c4iw_wr_wait *wr_waitp, int ret) 250 { 251 _c4iw_wake_up(wr_waitp, ret, false); 252 } 253 254 static inline void c4iw_wake_up_deref(struct c4iw_wr_wait *wr_waitp, int ret) 255 { 256 _c4iw_wake_up(wr_waitp, ret, true); 257 } 258 259 static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev, 260 struct c4iw_wr_wait *wr_waitp, 261 u32 hwtid, u32 qpid, 262 const char *func) 263 { 264 int ret; 265 266 if (c4iw_fatal_error(rdev)) { 267 wr_waitp->ret = -EIO; 268 goto out; 269 } 270 271 ret = wait_for_completion_timeout(&wr_waitp->completion, C4IW_WR_TO); 272 if (!ret) { 273 pr_err("%s - Device %s not responding (disabling device) - tid %u qpid %u\n", 274 func, pci_name(rdev->lldi.pdev), hwtid, qpid); 275 rdev->flags |= T4_FATAL_ERROR; 276 wr_waitp->ret = -EIO; 277 goto out; 278 } 279 if (wr_waitp->ret) 280 pr_debug("%s: FW reply %d tid %u qpid %u\n", 281 pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid); 282 out: 283 return wr_waitp->ret; 284 } 285 286 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb); 287 288 static inline int c4iw_ref_send_wait(struct c4iw_rdev *rdev, 289 struct sk_buff *skb, 290 struct c4iw_wr_wait *wr_waitp, 291 u32 hwtid, u32 qpid, 292 const char *func) 293 { 294 int ret; 295 296 pr_debug("%s wr_wait %p hwtid %u qpid %u\n", func, wr_waitp, hwtid, 297 qpid); 298 c4iw_get_wr_wait(wr_waitp); 299 ret = c4iw_ofld_send(rdev, skb); 300 if (ret) { 301 c4iw_put_wr_wait(wr_waitp); 302 return ret; 303 } 304 return c4iw_wait_for_reply(rdev, wr_waitp, hwtid, qpid, func); 305 } 306 307 enum db_state { 308 NORMAL = 0, 309 FLOW_CONTROL = 1, 310 RECOVERY = 2, 311 STOPPED = 3 312 }; 313 314 struct c4iw_dev { 315 struct ib_device ibdev; 316 struct c4iw_rdev rdev; 317 struct xarray cqs; 318 struct xarray qps; 319 struct xarray mrs; 320 struct mutex db_mutex; 321 struct dentry *debugfs_root; 322 enum db_state db_state; 323 struct xarray hwtids; 324 struct xarray atids; 325 struct xarray stids; 326 struct list_head db_fc_list; 327 u32 avail_ird; 328 wait_queue_head_t wait; 329 }; 330 331 struct uld_ctx { 332 struct list_head entry; 333 struct cxgb4_lld_info lldi; 334 struct c4iw_dev *dev; 335 struct work_struct reg_work; 336 }; 337 338 static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev) 339 { 340 return container_of(ibdev, struct c4iw_dev, ibdev); 341 } 342 343 static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid) 344 { 345 return xa_load(&rhp->cqs, cqid); 346 } 347 348 static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid) 349 { 350 return xa_load(&rhp->qps, qpid); 351 } 352 353 extern uint c4iw_max_read_depth; 354 355 static inline int cur_max_read_depth(struct c4iw_dev *dev) 356 { 357 return min(dev->rdev.lldi.max_ordird_qp, c4iw_max_read_depth); 358 } 359 360 struct c4iw_pd { 361 struct ib_pd ibpd; 362 u32 pdid; 363 struct c4iw_dev *rhp; 364 }; 365 366 static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd) 367 { 368 return container_of(ibpd, struct c4iw_pd, ibpd); 369 } 370 371 struct tpt_attributes { 372 u64 len; 373 u64 va_fbo; 374 enum fw_ri_mem_perms perms; 375 u32 stag; 376 u32 pdid; 377 u32 qpid; 378 u32 pbl_addr; 379 u32 pbl_size; 380 u32 state:1; 381 u32 type:2; 382 u32 rsvd:1; 383 u32 remote_invaliate_disable:1; 384 u32 zbva:1; 385 u32 mw_bind_enable:1; 386 u32 page_size:5; 387 }; 388 389 struct c4iw_mr { 390 struct ib_mr ibmr; 391 struct ib_umem *umem; 392 struct c4iw_dev *rhp; 393 struct sk_buff *dereg_skb; 394 u64 kva; 395 struct tpt_attributes attr; 396 u64 *mpl; 397 dma_addr_t mpl_addr; 398 u32 max_mpl_len; 399 u32 mpl_len; 400 struct c4iw_wr_wait *wr_waitp; 401 }; 402 403 static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr) 404 { 405 return container_of(ibmr, struct c4iw_mr, ibmr); 406 } 407 408 struct c4iw_mw { 409 struct ib_mw ibmw; 410 struct c4iw_dev *rhp; 411 struct sk_buff *dereg_skb; 412 u64 kva; 413 struct tpt_attributes attr; 414 struct c4iw_wr_wait *wr_waitp; 415 }; 416 417 static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw) 418 { 419 return container_of(ibmw, struct c4iw_mw, ibmw); 420 } 421 422 struct c4iw_cq { 423 struct ib_cq ibcq; 424 struct c4iw_dev *rhp; 425 struct sk_buff *destroy_skb; 426 struct t4_cq cq; 427 spinlock_t lock; 428 spinlock_t comp_handler_lock; 429 refcount_t refcnt; 430 struct completion cq_rel_comp; 431 struct c4iw_wr_wait *wr_waitp; 432 }; 433 434 static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq) 435 { 436 return container_of(ibcq, struct c4iw_cq, ibcq); 437 } 438 439 struct c4iw_mpa_attributes { 440 u8 initiator; 441 u8 recv_marker_enabled; 442 u8 xmit_marker_enabled; 443 u8 crc_enabled; 444 u8 enhanced_rdma_conn; 445 u8 version; 446 u8 p2p_type; 447 }; 448 449 struct c4iw_qp_attributes { 450 u32 scq; 451 u32 rcq; 452 u32 sq_num_entries; 453 u32 rq_num_entries; 454 u32 sq_max_sges; 455 u32 sq_max_sges_rdma_write; 456 u32 rq_max_sges; 457 u32 state; 458 u8 enable_rdma_read; 459 u8 enable_rdma_write; 460 u8 enable_bind; 461 u8 enable_mmid0_fastreg; 462 u32 max_ord; 463 u32 max_ird; 464 u32 pd; 465 u32 next_state; 466 char terminate_buffer[52]; 467 u32 terminate_msg_len; 468 u8 is_terminate_local; 469 struct c4iw_mpa_attributes mpa_attr; 470 struct c4iw_ep *llp_stream_handle; 471 u8 layer_etype; 472 u8 ecode; 473 u16 sq_db_inc; 474 u16 rq_db_inc; 475 u8 send_term; 476 }; 477 478 struct c4iw_qp { 479 struct ib_qp ibqp; 480 struct list_head db_fc_entry; 481 struct c4iw_dev *rhp; 482 struct c4iw_ep *ep; 483 struct c4iw_qp_attributes attr; 484 struct t4_wq wq; 485 spinlock_t lock; 486 struct mutex mutex; 487 wait_queue_head_t wait; 488 int sq_sig_all; 489 struct c4iw_srq *srq; 490 struct c4iw_ucontext *ucontext; 491 struct c4iw_wr_wait *wr_waitp; 492 struct completion qp_rel_comp; 493 refcount_t qp_refcnt; 494 }; 495 496 static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp) 497 { 498 return container_of(ibqp, struct c4iw_qp, ibqp); 499 } 500 501 struct c4iw_srq { 502 struct ib_srq ibsrq; 503 struct list_head db_fc_entry; 504 struct c4iw_dev *rhp; 505 struct t4_srq wq; 506 struct sk_buff *destroy_skb; 507 u32 srq_limit; 508 u32 pdid; 509 int idx; 510 u32 flags; 511 spinlock_t lock; /* protects srq */ 512 struct c4iw_wr_wait *wr_waitp; 513 bool armed; 514 }; 515 516 static inline struct c4iw_srq *to_c4iw_srq(struct ib_srq *ibsrq) 517 { 518 return container_of(ibsrq, struct c4iw_srq, ibsrq); 519 } 520 521 struct c4iw_ucontext { 522 struct ib_ucontext ibucontext; 523 struct c4iw_dev_ucontext uctx; 524 u32 key; 525 spinlock_t mmap_lock; 526 struct list_head mmaps; 527 bool is_32b_cqe; 528 }; 529 530 static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c) 531 { 532 return container_of(c, struct c4iw_ucontext, ibucontext); 533 } 534 535 struct c4iw_mm_entry { 536 struct list_head entry; 537 u64 addr; 538 u32 key; 539 unsigned len; 540 }; 541 542 static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext, 543 u32 key, unsigned len) 544 { 545 struct list_head *pos, *nxt; 546 struct c4iw_mm_entry *mm; 547 548 spin_lock(&ucontext->mmap_lock); 549 list_for_each_safe(pos, nxt, &ucontext->mmaps) { 550 551 mm = list_entry(pos, struct c4iw_mm_entry, entry); 552 if (mm->key == key && mm->len == len) { 553 list_del_init(&mm->entry); 554 spin_unlock(&ucontext->mmap_lock); 555 pr_debug("key 0x%x addr 0x%llx len %d\n", key, 556 (unsigned long long)mm->addr, mm->len); 557 return mm; 558 } 559 } 560 spin_unlock(&ucontext->mmap_lock); 561 return NULL; 562 } 563 564 static inline void insert_mmap(struct c4iw_ucontext *ucontext, 565 struct c4iw_mm_entry *mm) 566 { 567 spin_lock(&ucontext->mmap_lock); 568 pr_debug("key 0x%x addr 0x%llx len %d\n", 569 mm->key, (unsigned long long)mm->addr, mm->len); 570 list_add_tail(&mm->entry, &ucontext->mmaps); 571 spin_unlock(&ucontext->mmap_lock); 572 } 573 574 enum c4iw_qp_attr_mask { 575 C4IW_QP_ATTR_NEXT_STATE = 1 << 0, 576 C4IW_QP_ATTR_SQ_DB = 1<<1, 577 C4IW_QP_ATTR_RQ_DB = 1<<2, 578 C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7, 579 C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8, 580 C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9, 581 C4IW_QP_ATTR_MAX_ORD = 1 << 11, 582 C4IW_QP_ATTR_MAX_IRD = 1 << 12, 583 C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22, 584 C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23, 585 C4IW_QP_ATTR_MPA_ATTR = 1 << 24, 586 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25, 587 C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ | 588 C4IW_QP_ATTR_ENABLE_RDMA_WRITE | 589 C4IW_QP_ATTR_MAX_ORD | 590 C4IW_QP_ATTR_MAX_IRD | 591 C4IW_QP_ATTR_LLP_STREAM_HANDLE | 592 C4IW_QP_ATTR_STREAM_MSG_BUFFER | 593 C4IW_QP_ATTR_MPA_ATTR | 594 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE) 595 }; 596 597 int c4iw_modify_qp(struct c4iw_dev *rhp, 598 struct c4iw_qp *qhp, 599 enum c4iw_qp_attr_mask mask, 600 struct c4iw_qp_attributes *attrs, 601 int internal); 602 603 enum c4iw_qp_state { 604 C4IW_QP_STATE_IDLE, 605 C4IW_QP_STATE_RTS, 606 C4IW_QP_STATE_ERROR, 607 C4IW_QP_STATE_TERMINATE, 608 C4IW_QP_STATE_CLOSING, 609 C4IW_QP_STATE_TOT 610 }; 611 612 static inline int c4iw_convert_state(enum ib_qp_state ib_state) 613 { 614 switch (ib_state) { 615 case IB_QPS_RESET: 616 case IB_QPS_INIT: 617 return C4IW_QP_STATE_IDLE; 618 case IB_QPS_RTS: 619 return C4IW_QP_STATE_RTS; 620 case IB_QPS_SQD: 621 return C4IW_QP_STATE_CLOSING; 622 case IB_QPS_SQE: 623 return C4IW_QP_STATE_TERMINATE; 624 case IB_QPS_ERR: 625 return C4IW_QP_STATE_ERROR; 626 default: 627 return -1; 628 } 629 } 630 631 static inline int to_ib_qp_state(int c4iw_qp_state) 632 { 633 switch (c4iw_qp_state) { 634 case C4IW_QP_STATE_IDLE: 635 return IB_QPS_INIT; 636 case C4IW_QP_STATE_RTS: 637 return IB_QPS_RTS; 638 case C4IW_QP_STATE_CLOSING: 639 return IB_QPS_SQD; 640 case C4IW_QP_STATE_TERMINATE: 641 return IB_QPS_SQE; 642 case C4IW_QP_STATE_ERROR: 643 return IB_QPS_ERR; 644 } 645 return IB_QPS_ERR; 646 } 647 648 static inline u32 c4iw_ib_to_tpt_access(int a) 649 { 650 return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) | 651 (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) | 652 (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) | 653 FW_RI_MEM_ACCESS_LOCAL_READ; 654 } 655 656 enum c4iw_mmid_state { 657 C4IW_STAG_STATE_VALID, 658 C4IW_STAG_STATE_INVALID 659 }; 660 661 #define C4IW_NODE_DESC "cxgb4 Chelsio Communications" 662 663 #define MPA_KEY_REQ "MPA ID Req Frame" 664 #define MPA_KEY_REP "MPA ID Rep Frame" 665 666 #define MPA_MAX_PRIVATE_DATA 256 667 #define MPA_ENHANCED_RDMA_CONN 0x10 668 #define MPA_REJECT 0x20 669 #define MPA_CRC 0x40 670 #define MPA_MARKERS 0x80 671 #define MPA_FLAGS_MASK 0xE0 672 673 #define MPA_V2_PEER2PEER_MODEL 0x8000 674 #define MPA_V2_ZERO_LEN_FPDU_RTR 0x4000 675 #define MPA_V2_RDMA_WRITE_RTR 0x8000 676 #define MPA_V2_RDMA_READ_RTR 0x4000 677 #define MPA_V2_IRD_ORD_MASK 0x3FFF 678 679 #define c4iw_put_ep(ep) { \ 680 pr_debug("put_ep ep %p refcnt %d\n", \ 681 ep, kref_read(&((ep)->kref))); \ 682 WARN_ON(kref_read(&((ep)->kref)) < 1); \ 683 kref_put(&((ep)->kref), _c4iw_free_ep); \ 684 } 685 686 #define c4iw_get_ep(ep) { \ 687 pr_debug("get_ep ep %p, refcnt %d\n", \ 688 ep, kref_read(&((ep)->kref))); \ 689 kref_get(&((ep)->kref)); \ 690 } 691 void _c4iw_free_ep(struct kref *kref); 692 693 struct mpa_message { 694 u8 key[16]; 695 u8 flags; 696 u8 revision; 697 __be16 private_data_size; 698 u8 private_data[]; 699 }; 700 701 struct mpa_v2_conn_params { 702 __be16 ird; 703 __be16 ord; 704 }; 705 706 struct terminate_message { 707 u8 layer_etype; 708 u8 ecode; 709 __be16 hdrct_rsvd; 710 u8 len_hdrs[]; 711 }; 712 713 #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28) 714 715 enum c4iw_layers_types { 716 LAYER_RDMAP = 0x00, 717 LAYER_DDP = 0x10, 718 LAYER_MPA = 0x20, 719 RDMAP_LOCAL_CATA = 0x00, 720 RDMAP_REMOTE_PROT = 0x01, 721 RDMAP_REMOTE_OP = 0x02, 722 DDP_LOCAL_CATA = 0x00, 723 DDP_TAGGED_ERR = 0x01, 724 DDP_UNTAGGED_ERR = 0x02, 725 DDP_LLP = 0x03 726 }; 727 728 enum c4iw_rdma_ecodes { 729 RDMAP_INV_STAG = 0x00, 730 RDMAP_BASE_BOUNDS = 0x01, 731 RDMAP_ACC_VIOL = 0x02, 732 RDMAP_STAG_NOT_ASSOC = 0x03, 733 RDMAP_TO_WRAP = 0x04, 734 RDMAP_INV_VERS = 0x05, 735 RDMAP_INV_OPCODE = 0x06, 736 RDMAP_STREAM_CATA = 0x07, 737 RDMAP_GLOBAL_CATA = 0x08, 738 RDMAP_CANT_INV_STAG = 0x09, 739 RDMAP_UNSPECIFIED = 0xff 740 }; 741 742 enum c4iw_ddp_ecodes { 743 DDPT_INV_STAG = 0x00, 744 DDPT_BASE_BOUNDS = 0x01, 745 DDPT_STAG_NOT_ASSOC = 0x02, 746 DDPT_TO_WRAP = 0x03, 747 DDPT_INV_VERS = 0x04, 748 DDPU_INV_QN = 0x01, 749 DDPU_INV_MSN_NOBUF = 0x02, 750 DDPU_INV_MSN_RANGE = 0x03, 751 DDPU_INV_MO = 0x04, 752 DDPU_MSG_TOOBIG = 0x05, 753 DDPU_INV_VERS = 0x06 754 }; 755 756 enum c4iw_mpa_ecodes { 757 MPA_CRC_ERR = 0x02, 758 MPA_MARKER_ERR = 0x03, 759 MPA_LOCAL_CATA = 0x05, 760 MPA_INSUFF_IRD = 0x06, 761 MPA_NOMATCH_RTR = 0x07, 762 }; 763 764 enum c4iw_ep_state { 765 IDLE = 0, 766 LISTEN, 767 CONNECTING, 768 MPA_REQ_WAIT, 769 MPA_REQ_SENT, 770 MPA_REQ_RCVD, 771 MPA_REP_SENT, 772 FPDU_MODE, 773 ABORTING, 774 CLOSING, 775 MORIBUND, 776 DEAD, 777 }; 778 779 enum c4iw_ep_flags { 780 PEER_ABORT_IN_PROGRESS = 0, 781 ABORT_REQ_IN_PROGRESS = 1, 782 RELEASE_RESOURCES = 2, 783 CLOSE_SENT = 3, 784 TIMEOUT = 4, 785 QP_REFERENCED = 5, 786 STOP_MPA_TIMER = 7, 787 }; 788 789 enum c4iw_ep_history { 790 ACT_OPEN_REQ = 0, 791 ACT_OFLD_CONN = 1, 792 ACT_OPEN_RPL = 2, 793 ACT_ESTAB = 3, 794 PASS_ACCEPT_REQ = 4, 795 PASS_ESTAB = 5, 796 ABORT_UPCALL = 6, 797 ESTAB_UPCALL = 7, 798 CLOSE_UPCALL = 8, 799 ULP_ACCEPT = 9, 800 ULP_REJECT = 10, 801 TIMEDOUT = 11, 802 PEER_ABORT = 12, 803 PEER_CLOSE = 13, 804 CONNREQ_UPCALL = 14, 805 ABORT_CONN = 15, 806 DISCONN_UPCALL = 16, 807 EP_DISC_CLOSE = 17, 808 EP_DISC_ABORT = 18, 809 CONN_RPL_UPCALL = 19, 810 ACT_RETRY_NOMEM = 20, 811 ACT_RETRY_INUSE = 21, 812 CLOSE_CON_RPL = 22, 813 EP_DISC_FAIL = 24, 814 QP_REFED = 25, 815 QP_DEREFED = 26, 816 CM_ID_REFED = 27, 817 CM_ID_DEREFED = 28, 818 }; 819 820 enum conn_pre_alloc_buffers { 821 CN_ABORT_REQ_BUF, 822 CN_ABORT_RPL_BUF, 823 CN_CLOSE_CON_REQ_BUF, 824 CN_DESTROY_BUF, 825 CN_FLOWC_BUF, 826 CN_MAX_CON_BUF 827 }; 828 829 enum { 830 FLOWC_LEN = offsetof(struct fw_flowc_wr, mnemval[FW_FLOWC_MNEM_MAX]) 831 }; 832 833 union cpl_wr_size { 834 struct cpl_abort_req abrt_req; 835 struct cpl_abort_rpl abrt_rpl; 836 struct fw_ri_wr ri_req; 837 struct cpl_close_con_req close_req; 838 char flowc_buf[FLOWC_LEN]; 839 }; 840 841 struct c4iw_ep_common { 842 struct iw_cm_id *cm_id; 843 struct c4iw_qp *qp; 844 struct c4iw_dev *dev; 845 struct sk_buff_head ep_skb_list; 846 enum c4iw_ep_state state; 847 struct kref kref; 848 struct mutex mutex; 849 struct sockaddr_storage local_addr; 850 struct sockaddr_storage remote_addr; 851 struct c4iw_wr_wait *wr_waitp; 852 unsigned long flags; 853 unsigned long history; 854 }; 855 856 struct c4iw_listen_ep { 857 struct c4iw_ep_common com; 858 unsigned int stid; 859 int backlog; 860 }; 861 862 struct c4iw_ep_stats { 863 unsigned connect_neg_adv; 864 unsigned abort_neg_adv; 865 }; 866 867 struct c4iw_ep { 868 struct c4iw_ep_common com; 869 struct c4iw_ep *parent_ep; 870 struct timer_list timer; 871 struct list_head entry; 872 unsigned int atid; 873 u32 hwtid; 874 u32 snd_seq; 875 u32 rcv_seq; 876 struct l2t_entry *l2t; 877 struct dst_entry *dst; 878 struct sk_buff *mpa_skb; 879 struct c4iw_mpa_attributes mpa_attr; 880 u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA]; 881 unsigned int mpa_pkt_len; 882 u32 ird; 883 u32 ord; 884 u32 smac_idx; 885 u32 tx_chan; 886 u32 mtu; 887 u16 mss; 888 u16 emss; 889 u16 plen; 890 u16 rss_qid; 891 u16 txq_idx; 892 u16 ctrlq_idx; 893 u8 tos; 894 u8 retry_with_mpa_v1; 895 u8 tried_with_mpa_v1; 896 unsigned int retry_count; 897 int snd_win; 898 int rcv_win; 899 u32 snd_wscale; 900 struct c4iw_ep_stats stats; 901 u32 srqe_idx; 902 u32 rx_pdu_out_cnt; 903 struct sk_buff *peer_abort_skb; 904 }; 905 906 static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id) 907 { 908 return cm_id->provider_data; 909 } 910 911 static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id) 912 { 913 return cm_id->provider_data; 914 } 915 916 static inline int ocqp_supported(const struct cxgb4_lld_info *infop) 917 { 918 #if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64) 919 return infop->vr->ocq.size > 0; 920 #else 921 return 0; 922 #endif 923 } 924 925 u32 c4iw_id_alloc(struct c4iw_id_table *alloc); 926 void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj); 927 int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num, 928 u32 reserved, u32 flags); 929 void c4iw_id_table_free(struct c4iw_id_table *alloc); 930 931 typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb); 932 933 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid, 934 struct c4iw_dev_ucontext *uctx); 935 u32 c4iw_get_resource(struct c4iw_id_table *id_table); 936 void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry); 937 int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt, 938 u32 nr_pdid, u32 nr_srqt); 939 int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev); 940 int c4iw_pblpool_create(struct c4iw_rdev *rdev); 941 int c4iw_rqtpool_create(struct c4iw_rdev *rdev); 942 int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev); 943 void c4iw_pblpool_destroy(struct c4iw_rdev *rdev); 944 void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev); 945 void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev); 946 void c4iw_destroy_resource(struct c4iw_resource *rscp); 947 int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev); 948 void c4iw_register_device(struct work_struct *work); 949 void c4iw_unregister_device(struct c4iw_dev *dev); 950 int __init c4iw_cm_init(void); 951 void c4iw_cm_term(void); 952 void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, 953 struct c4iw_dev_ucontext *uctx); 954 void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, 955 struct c4iw_dev_ucontext *uctx); 956 int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc); 957 int c4iw_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr, 958 const struct ib_send_wr **bad_wr); 959 int c4iw_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr, 960 const struct ib_recv_wr **bad_wr); 961 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); 962 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog); 963 int c4iw_destroy_listen(struct iw_cm_id *cm_id); 964 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param); 965 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len); 966 void c4iw_qp_add_ref(struct ib_qp *qp); 967 void c4iw_qp_rem_ref(struct ib_qp *qp); 968 struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type, 969 u32 max_num_sg); 970 int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents, 971 unsigned int *sg_offset); 972 void c4iw_dealloc(struct uld_ctx *ctx); 973 struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start, 974 u64 length, u64 virt, int acc, 975 struct ib_udata *udata); 976 struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc); 977 int c4iw_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata); 978 int c4iw_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata); 979 void c4iw_cq_rem_ref(struct c4iw_cq *chp); 980 int c4iw_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, 981 struct ib_udata *udata); 982 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags); 983 int c4iw_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *attr, 984 enum ib_srq_attr_mask srq_attr_mask, 985 struct ib_udata *udata); 986 int c4iw_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata); 987 int c4iw_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *attrs, 988 struct ib_udata *udata); 989 int c4iw_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata); 990 int c4iw_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *attrs, 991 struct ib_udata *udata); 992 int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 993 int attr_mask, struct ib_udata *udata); 994 int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 995 int attr_mask, struct ib_qp_init_attr *init_attr); 996 struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn); 997 u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size); 998 void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size); 999 u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size); 1000 void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size); 1001 u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size); 1002 void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size); 1003 void c4iw_flush_hw_cq(struct c4iw_cq *chp, struct c4iw_qp *flush_qhp); 1004 void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count); 1005 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp); 1006 int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count); 1007 int c4iw_flush_sq(struct c4iw_qp *qhp); 1008 int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid); 1009 u16 c4iw_rqes_posted(struct c4iw_qp *qhp); 1010 int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe); 1011 u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); 1012 void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid, 1013 struct c4iw_dev_ucontext *uctx); 1014 u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx); 1015 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid, 1016 struct c4iw_dev_ucontext *uctx); 1017 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe); 1018 1019 extern struct cxgb4_client t4c_client; 1020 extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS]; 1021 void __iomem *c4iw_bar2_addrs(struct c4iw_rdev *rdev, unsigned int qid, 1022 enum cxgb4_bar2_qtype qtype, 1023 unsigned int *pbar2_qid, u64 *pbar2_pa); 1024 int c4iw_alloc_srq_idx(struct c4iw_rdev *rdev); 1025 void c4iw_free_srq_idx(struct c4iw_rdev *rdev, int idx); 1026 extern void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe); 1027 extern int c4iw_wr_log; 1028 extern int db_fc_threshold; 1029 extern int db_coalescing_threshold; 1030 extern int use_dsgl; 1031 void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey); 1032 void c4iw_dispatch_srq_limit_reached_event(struct c4iw_srq *srq); 1033 void c4iw_copy_wr_to_srq(struct t4_srq *srq, union t4_recv_wr *wqe, u8 len16); 1034 void c4iw_flush_srqidx(struct c4iw_qp *qhp, u32 srqidx); 1035 int c4iw_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr, 1036 const struct ib_recv_wr **bad_wr); 1037 struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp); 1038 1039 int c4iw_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr); 1040 int c4iw_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ibcq); 1041 int c4iw_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ibqp); 1042 int c4iw_fill_res_cm_id_entry(struct sk_buff *msg, struct rdma_cm_id *cm_id); 1043 1044 #endif 1045