1/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2/*
   3 * Copyright (c) 2013-2020, Mellanox Technologies inc. All rights reserved.
   4 * Copyright (c) 2020, Intel Corporation. All rights reserved.
   5 */
   6
   7#ifndef MLX5_IB_H
   8#define MLX5_IB_H
   9
  10#include <linux/kernel.h>
  11#include <linux/sched.h>
  12#include <rdma/ib_verbs.h>
  13#include <rdma/ib_umem.h>
  14#include <rdma/ib_smi.h>
  15#include <linux/mlx5/driver.h>
  16#include <linux/mlx5/cq.h>
  17#include <linux/mlx5/fs.h>
  18#include <linux/mlx5/qp.h>
  19#include <linux/types.h>
  20#include <linux/mlx5/transobj.h>
  21#include <rdma/ib_user_verbs.h>
  22#include <rdma/mlx5-abi.h>
  23#include <rdma/uverbs_ioctl.h>
  24#include <rdma/mlx5_user_ioctl_cmds.h>
  25#include <rdma/mlx5_user_ioctl_verbs.h>
  26
  27#include "srq.h"
  28#include "qp.h"
  29#include "macsec.h"
  30
  31#define mlx5_ib_dbg(_dev, format, arg...)                                      \
  32	dev_dbg(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,      \
  33		__LINE__, current->pid, ##arg)
  34
  35#define mlx5_ib_err(_dev, format, arg...)                                      \
  36	dev_err(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,      \
  37		__LINE__, current->pid, ##arg)
  38
  39#define mlx5_ib_warn(_dev, format, arg...)                                     \
  40	dev_warn(&(_dev)->ib_dev.dev, "%s:%d:(pid %d): " format, __func__,     \
  41		 __LINE__, current->pid, ##arg)
  42
  43#define mlx5_ib_log(lvl, _dev, format, arg...)                                 \
  44	dev_printk(lvl, &(_dev)->ib_dev.dev,  "%s:%d:(pid %d): " format,       \
  45		   __func__, __LINE__, current->pid, ##arg)
  46
  47#define MLX5_IB_DEFAULT_UIDX 0xffffff
  48#define MLX5_USER_ASSIGNED_UIDX_MASK __mlx5_mask(qpc, user_index)
  49
  50static __always_inline unsigned long
  51__mlx5_log_page_size_to_bitmap(unsigned int log_pgsz_bits,
  52			       unsigned int pgsz_shift)
  53{
  54	unsigned int largest_pg_shift =
  55		min_t(unsigned long, (1ULL << log_pgsz_bits) - 1 + pgsz_shift,
  56		      BITS_PER_LONG - 1);
  57
  58	/*
  59	 * Despite a command allowing it, the device does not support lower than
  60	 * 4k page size.
  61	 */
  62	pgsz_shift = max_t(unsigned int, MLX5_ADAPTER_PAGE_SHIFT, pgsz_shift);
  63	return GENMASK(largest_pg_shift, pgsz_shift);
  64}
  65
  66/*
  67 * For mkc users, instead of a page_offset the command has a start_iova which
  68 * specifies both the page_offset and the on-the-wire IOVA
  69 */
  70#define mlx5_umem_find_best_pgsz(umem, typ, log_pgsz_fld, pgsz_shift, iova)    \
  71	ib_umem_find_best_pgsz(umem,                                           \
  72			       __mlx5_log_page_size_to_bitmap(                 \
  73				       __mlx5_bit_sz(typ, log_pgsz_fld),       \
  74				       pgsz_shift),                            \
  75			       iova)
  76
  77static __always_inline unsigned long
  78__mlx5_page_offset_to_bitmask(unsigned int page_offset_bits,
  79			      unsigned int offset_shift)
  80{
  81	unsigned int largest_offset_shift =
  82		min_t(unsigned long, page_offset_bits - 1 + offset_shift,
  83		      BITS_PER_LONG - 1);
  84
  85	return GENMASK(largest_offset_shift, offset_shift);
  86}
  87
  88/*
  89 * QP/CQ/WQ/etc type commands take a page offset that satisifies:
  90 *   page_offset_quantized * (page_size/scale) = page_offset
  91 * Which restricts allowed page sizes to ones that satisify the above.
  92 */
  93unsigned long __mlx5_umem_find_best_quantized_pgoff(
  94	struct ib_umem *umem, unsigned long pgsz_bitmap,
  95	unsigned int page_offset_bits, u64 pgoff_bitmask, unsigned int scale,
  96	unsigned int *page_offset_quantized);
  97#define mlx5_umem_find_best_quantized_pgoff(umem, typ, log_pgsz_fld,           \
  98					    pgsz_shift, page_offset_fld,       \
  99					    scale, page_offset_quantized)      \
 100	__mlx5_umem_find_best_quantized_pgoff(                                 \
 101		umem,                                                          \
 102		__mlx5_log_page_size_to_bitmap(                                \
 103			__mlx5_bit_sz(typ, log_pgsz_fld), pgsz_shift),         \
 104		__mlx5_bit_sz(typ, page_offset_fld),                           \
 105		GENMASK(31, order_base_2(scale)), scale,                       \
 106		page_offset_quantized)
 107
 108#define mlx5_umem_find_best_cq_quantized_pgoff(umem, typ, log_pgsz_fld,        \
 109					       pgsz_shift, page_offset_fld,    \
 110					       scale, page_offset_quantized)   \
 111	__mlx5_umem_find_best_quantized_pgoff(                                 \
 112		umem,                                                          \
 113		__mlx5_log_page_size_to_bitmap(                                \
 114			__mlx5_bit_sz(typ, log_pgsz_fld), pgsz_shift),         \
 115		__mlx5_bit_sz(typ, page_offset_fld), 0, scale,                 \
 116		page_offset_quantized)
 117
 118enum {
 119	MLX5_IB_MMAP_OFFSET_START = 9,
 120	MLX5_IB_MMAP_OFFSET_END = 255,
 121};
 122
 123enum {
 124	MLX5_IB_MMAP_CMD_SHIFT	= 8,
 125	MLX5_IB_MMAP_CMD_MASK	= 0xff,
 126};
 127
 128enum {
 129	MLX5_RES_SCAT_DATA32_CQE	= 0x1,
 130	MLX5_RES_SCAT_DATA64_CQE	= 0x2,
 131	MLX5_REQ_SCAT_DATA32_CQE	= 0x11,
 132	MLX5_REQ_SCAT_DATA64_CQE	= 0x22,
 133};
 134
 135enum mlx5_ib_mad_ifc_flags {
 136	MLX5_MAD_IFC_IGNORE_MKEY	= 1,
 137	MLX5_MAD_IFC_IGNORE_BKEY	= 2,
 138	MLX5_MAD_IFC_NET_VIEW		= 4,
 139};
 140
 141enum {
 142	MLX5_CROSS_CHANNEL_BFREG         = 0,
 143};
 144
 145enum {
 146	MLX5_CQE_VERSION_V0,
 147	MLX5_CQE_VERSION_V1,
 148};
 149
 150enum {
 151	MLX5_TM_MAX_RNDV_MSG_SIZE	= 64,
 152	MLX5_TM_MAX_SGE			= 1,
 153};
 154
 155enum {
 156	MLX5_IB_INVALID_UAR_INDEX	= BIT(31),
 157	MLX5_IB_INVALID_BFREG		= BIT(31),
 158};
 159
 160enum {
 161	MLX5_MAX_MEMIC_PAGES = 0x100,
 162	MLX5_MEMIC_ALLOC_SIZE_MASK = 0x3f,
 163};
 164
 165enum {
 166	MLX5_MEMIC_BASE_ALIGN	= 6,
 167	MLX5_MEMIC_BASE_SIZE	= 1 << MLX5_MEMIC_BASE_ALIGN,
 168};
 169
 170enum mlx5_ib_mmap_type {
 171	MLX5_IB_MMAP_TYPE_MEMIC = 1,
 172	MLX5_IB_MMAP_TYPE_VAR = 2,
 173	MLX5_IB_MMAP_TYPE_UAR_WC = 3,
 174	MLX5_IB_MMAP_TYPE_UAR_NC = 4,
 175	MLX5_IB_MMAP_TYPE_MEMIC_OP = 5,
 176};
 177
 178struct mlx5_bfreg_info {
 179	u32 *sys_pages;
 180	int num_low_latency_bfregs;
 181	unsigned int *count;
 182
 183	/*
 184	 * protect bfreg allocation data structs
 185	 */
 186	struct mutex lock;
 187	u32 ver;
 188	u8 lib_uar_4k : 1;
 189	u8 lib_uar_dyn : 1;
 190	u32 num_sys_pages;
 191	u32 num_static_sys_pages;
 192	u32 total_num_bfregs;
 193	u32 num_dyn_bfregs;
 194};
 195
 196struct mlx5_ib_ucontext {
 197	struct ib_ucontext	ibucontext;
 198	struct list_head	db_page_list;
 199
 200	/* protect doorbell record alloc/free
 201	 */
 202	struct mutex		db_page_mutex;
 203	struct mlx5_bfreg_info	bfregi;
 204	u8			cqe_version;
 205	/* Transport Domain number */
 206	u32			tdn;
 207
 208	u64			lib_caps;
 209	u16			devx_uid;
 210	/* For RoCE LAG TX affinity */
 211	atomic_t		tx_port_affinity;
 212};
 213
 214static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)
 215{
 216	return container_of(ibucontext, struct mlx5_ib_ucontext, ibucontext);
 217}
 218
 219struct mlx5_ib_pd {
 220	struct ib_pd		ibpd;
 221	u32			pdn;
 222	u16			uid;
 223};
 224
 225enum {
 226	MLX5_IB_FLOW_ACTION_MODIFY_HEADER,
 227	MLX5_IB_FLOW_ACTION_PACKET_REFORMAT,
 228	MLX5_IB_FLOW_ACTION_DECAP,
 229};
 230
 231#define MLX5_IB_FLOW_MCAST_PRIO		(MLX5_BY_PASS_NUM_PRIOS - 1)
 232#define MLX5_IB_FLOW_LAST_PRIO		(MLX5_BY_PASS_NUM_REGULAR_PRIOS - 1)
 233#if (MLX5_IB_FLOW_LAST_PRIO <= 0)
 234#error "Invalid number of bypass priorities"
 235#endif
 236#define MLX5_IB_FLOW_LEFTOVERS_PRIO	(MLX5_IB_FLOW_MCAST_PRIO + 1)
 237
 238#define MLX5_IB_NUM_FLOW_FT		(MLX5_IB_FLOW_LEFTOVERS_PRIO + 1)
 239#define MLX5_IB_NUM_SNIFFER_FTS		2
 240#define MLX5_IB_NUM_EGRESS_FTS		1
 241#define MLX5_IB_NUM_FDB_FTS		MLX5_BY_PASS_NUM_REGULAR_PRIOS
 242
 243struct mlx5_ib_anchor {
 244	struct mlx5_flow_table *ft;
 245	struct mlx5_flow_group *fg_goto_table;
 246	struct mlx5_flow_group *fg_drop;
 247	struct mlx5_flow_handle *rule_goto_table;
 248	struct mlx5_flow_handle *rule_drop;
 249	unsigned int rule_goto_table_ref;
 250};
 251
 252struct mlx5_ib_flow_prio {
 253	struct mlx5_flow_table		*flow_table;
 254	struct mlx5_ib_anchor		anchor;
 255	unsigned int			refcount;
 256};
 257
 258struct mlx5_ib_flow_handler {
 259	struct list_head		list;
 260	struct ib_flow			ibflow;
 261	struct mlx5_ib_flow_prio	*prio;
 262	struct mlx5_flow_handle		*rule;
 263	struct ib_counters		*ibcounters;
 264	struct mlx5_ib_dev		*dev;
 265	struct mlx5_ib_flow_matcher	*flow_matcher;
 266};
 267
 268struct mlx5_ib_flow_matcher {
 269	struct mlx5_ib_match_params matcher_mask;
 270	int			mask_len;
 271	enum mlx5_ib_flow_type	flow_type;
 272	enum mlx5_flow_namespace_type ns_type;
 273	u16			priority;
 274	struct mlx5_core_dev	*mdev;
 275	atomic_t		usecnt;
 276	u8			match_criteria_enable;
 277};
 278
 279struct mlx5_ib_steering_anchor {
 280	struct mlx5_ib_flow_prio *ft_prio;
 281	struct mlx5_ib_dev *dev;
 282	atomic_t usecnt;
 283};
 284
 285struct mlx5_ib_pp {
 286	u16 index;
 287	struct mlx5_core_dev *mdev;
 288};
 289
 290enum mlx5_ib_optional_counter_type {
 291	MLX5_IB_OPCOUNTER_CC_RX_CE_PKTS,
 292	MLX5_IB_OPCOUNTER_CC_RX_CNP_PKTS,
 293	MLX5_IB_OPCOUNTER_CC_TX_CNP_PKTS,
 294
 295	MLX5_IB_OPCOUNTER_MAX,
 296};
 297
 298struct mlx5_ib_flow_db {
 299	struct mlx5_ib_flow_prio	prios[MLX5_IB_NUM_FLOW_FT];
 300	struct mlx5_ib_flow_prio	egress_prios[MLX5_IB_NUM_FLOW_FT];
 301	struct mlx5_ib_flow_prio	sniffer[MLX5_IB_NUM_SNIFFER_FTS];
 302	struct mlx5_ib_flow_prio	egress[MLX5_IB_NUM_EGRESS_FTS];
 303	struct mlx5_ib_flow_prio	fdb[MLX5_IB_NUM_FDB_FTS];
 304	struct mlx5_ib_flow_prio	rdma_rx[MLX5_IB_NUM_FLOW_FT];
 305	struct mlx5_ib_flow_prio	rdma_tx[MLX5_IB_NUM_FLOW_FT];
 306	struct mlx5_ib_flow_prio	opfcs[MLX5_IB_OPCOUNTER_MAX];
 307	struct mlx5_flow_table		*lag_demux_ft;
 308	/* Protect flow steering bypass flow tables
 309	 * when add/del flow rules.
 310	 * only single add/removal of flow steering rule could be done
 311	 * simultaneously.
 312	 */
 313	struct mutex			lock;
 314};
 315
 316/* Use macros here so that don't have to duplicate
 317 * enum ib_qp_type for low-level driver
 318 */
 319
 
 
 
 
 
 
 
 320#define MLX5_IB_QPT_REG_UMR	IB_QPT_RESERVED1
 321/*
 322 * IB_QPT_GSI creates the software wrapper around GSI, and MLX5_IB_QPT_HW_GSI
 323 * creates the actual hardware QP.
 324 */
 325#define MLX5_IB_QPT_HW_GSI	IB_QPT_RESERVED2
 326#define MLX5_IB_QPT_DCI		IB_QPT_RESERVED3
 327#define MLX5_IB_QPT_DCT		IB_QPT_RESERVED4
 328#define MLX5_IB_WR_UMR		IB_WR_RESERVED1
 329
 
 
 
 330#define MLX5_IB_UPD_XLT_ZAP	      BIT(0)
 331#define MLX5_IB_UPD_XLT_ENABLE	      BIT(1)
 332#define MLX5_IB_UPD_XLT_ATOMIC	      BIT(2)
 333#define MLX5_IB_UPD_XLT_ADDR	      BIT(3)
 334#define MLX5_IB_UPD_XLT_PD	      BIT(4)
 335#define MLX5_IB_UPD_XLT_ACCESS	      BIT(5)
 336#define MLX5_IB_UPD_XLT_INDIRECT      BIT(6)
 337
 338/* Private QP creation flags to be passed in ib_qp_init_attr.create_flags.
 339 *
 340 * These flags are intended for internal use by the mlx5_ib driver, and they
 341 * rely on the range reserved for that use in the ib_qp_create_flags enum.
 342 */
 343#define MLX5_IB_QP_CREATE_SQPN_QP1	IB_QP_CREATE_RESERVED_START
 344#define MLX5_IB_QP_CREATE_WC_TEST	(IB_QP_CREATE_RESERVED_START << 1)
 345
 346struct wr_list {
 347	u16	opcode;
 348	u16	next;
 349};
 350
 351enum mlx5_ib_rq_flags {
 352	MLX5_IB_RQ_CVLAN_STRIPPING	= 1 << 0,
 353	MLX5_IB_RQ_PCI_WRITE_END_PADDING	= 1 << 1,
 354};
 355
 356struct mlx5_ib_wq {
 357	struct mlx5_frag_buf_ctrl fbc;
 358	u64		       *wrid;
 359	u32		       *wr_data;
 360	struct wr_list	       *w_list;
 361	unsigned	       *wqe_head;
 362	u16		        unsig_count;
 363
 364	/* serialize post to the work queue
 365	 */
 366	spinlock_t		lock;
 367	int			wqe_cnt;
 368	int			max_post;
 369	int			max_gs;
 370	int			offset;
 371	int			wqe_shift;
 372	unsigned		head;
 373	unsigned		tail;
 374	u16			cur_post;
 375	u16			last_poll;
 376	void			*cur_edge;
 377};
 378
 379enum mlx5_ib_wq_flags {
 380	MLX5_IB_WQ_FLAGS_DELAY_DROP = 0x1,
 381	MLX5_IB_WQ_FLAGS_STRIDING_RQ = 0x2,
 382};
 383
 384#define MLX5_MIN_SINGLE_WQE_LOG_NUM_STRIDES 9
 385#define MLX5_MAX_SINGLE_WQE_LOG_NUM_STRIDES 16
 386#define MLX5_MIN_SINGLE_STRIDE_LOG_NUM_BYTES 6
 387#define MLX5_MAX_SINGLE_STRIDE_LOG_NUM_BYTES 13
 388#define MLX5_EXT_MIN_SINGLE_WQE_LOG_NUM_STRIDES 3
 389
 390struct mlx5_ib_rwq {
 391	struct ib_wq		ibwq;
 392	struct mlx5_core_qp	core_qp;
 393	u32			rq_num_pas;
 394	u32			log_rq_stride;
 395	u32			log_rq_size;
 396	u32			rq_page_offset;
 397	u32			log_page_size;
 398	u32			log_num_strides;
 399	u32			two_byte_shift_en;
 400	u32			single_stride_log_num_of_bytes;
 401	struct ib_umem		*umem;
 402	size_t			buf_size;
 403	unsigned int		page_shift;
 404	struct mlx5_db		db;
 405	u32			user_index;
 406	u32			wqe_count;
 407	u32			wqe_shift;
 408	int			wq_sig;
 409	u32			create_flags; /* Use enum mlx5_ib_wq_flags */
 410};
 411
 412struct mlx5_ib_rwq_ind_table {
 413	struct ib_rwq_ind_table ib_rwq_ind_tbl;
 414	u32			rqtn;
 415	u16			uid;
 416};
 417
 418struct mlx5_ib_ubuffer {
 419	struct ib_umem	       *umem;
 420	int			buf_size;
 421	u64			buf_addr;
 422};
 423
 424struct mlx5_ib_qp_base {
 425	struct mlx5_ib_qp	*container_mibqp;
 426	struct mlx5_core_qp	mqp;
 427	struct mlx5_ib_ubuffer	ubuffer;
 428};
 429
 430struct mlx5_ib_qp_trans {
 431	struct mlx5_ib_qp_base	base;
 432	u16			xrcdn;
 433	u32			alt_port;
 434	u8			atomic_rd_en;
 435	u8			resp_depth;
 436};
 437
 438struct mlx5_ib_rss_qp {
 439	u32	tirn;
 440};
 441
 442struct mlx5_ib_rq {
 443	struct mlx5_ib_qp_base base;
 444	struct mlx5_ib_wq	*rq;
 445	struct mlx5_ib_ubuffer	ubuffer;
 446	struct mlx5_db		*doorbell;
 447	u32			tirn;
 448	u8			state;
 449	u32			flags;
 450};
 451
 452struct mlx5_ib_sq {
 453	struct mlx5_ib_qp_base base;
 454	struct mlx5_ib_wq	*sq;
 455	struct mlx5_ib_ubuffer  ubuffer;
 456	struct mlx5_db		*doorbell;
 457	struct mlx5_flow_handle	*flow_rule;
 458	u32			tisn;
 459	u8			state;
 460};
 461
 462struct mlx5_ib_raw_packet_qp {
 463	struct mlx5_ib_sq sq;
 464	struct mlx5_ib_rq rq;
 465};
 466
 467struct mlx5_bf {
 468	int			buf_size;
 469	unsigned long		offset;
 470	struct mlx5_sq_bfreg   *bfreg;
 471};
 472
 473struct mlx5_ib_dct {
 474	struct mlx5_core_dct    mdct;
 475	u32                     *in;
 476};
 477
 478struct mlx5_ib_gsi_qp {
 479	struct ib_qp *rx_qp;
 480	u32 port_num;
 481	struct ib_qp_cap cap;
 482	struct ib_cq *cq;
 483	struct mlx5_ib_gsi_wr *outstanding_wrs;
 484	u32 outstanding_pi, outstanding_ci;
 485	int num_qps;
 486	/* Protects access to the tx_qps. Post send operations synchronize
 487	 * with tx_qp creation in setup_qp(). Also protects the
 488	 * outstanding_wrs array and indices.
 489	 */
 490	spinlock_t lock;
 491	struct ib_qp **tx_qps;
 492};
 493
 494struct mlx5_ib_qp {
 495	struct ib_qp		ibqp;
 496	union {
 497		struct mlx5_ib_qp_trans trans_qp;
 498		struct mlx5_ib_raw_packet_qp raw_packet_qp;
 499		struct mlx5_ib_rss_qp rss_qp;
 500		struct mlx5_ib_dct dct;
 501		struct mlx5_ib_gsi_qp gsi;
 502	};
 503	struct mlx5_frag_buf	buf;
 504
 505	struct mlx5_db		db;
 506	struct mlx5_ib_wq	rq;
 507
 508	u8			sq_signal_bits;
 509	u8			next_fence;
 510	struct mlx5_ib_wq	sq;
 511
 512	/* serialize qp state modifications
 513	 */
 514	struct mutex		mutex;
 515	/* cached variant of create_flags from struct ib_qp_init_attr */
 516	u32			flags;
 517	u32			port;
 518	u8			state;
 519	int			max_inline_data;
 520	struct mlx5_bf	        bf;
 521	u8			has_rq:1;
 522	u8			is_rss:1;
 523
 524	/* only for user space QPs. For kernel
 525	 * we have it from the bf object
 526	 */
 527	int			bfregn;
 528
 529	struct list_head	qps_list;
 530	struct list_head	cq_recv_list;
 531	struct list_head	cq_send_list;
 532	struct mlx5_rate_limit	rl;
 533	u32                     underlay_qpn;
 534	u32			flags_en;
 535	/*
 536	 * IB/core doesn't store low-level QP types, so
 537	 * store both MLX and IBTA types in the field below.
 
 538	 */
 539	enum ib_qp_type		type;
 540	/* A flag to indicate if there's a new counter is configured
 541	 * but not take effective
 542	 */
 543	u32                     counter_pending;
 544	u16			gsi_lag_port;
 545};
 546
 547struct mlx5_ib_cq_buf {
 548	struct mlx5_frag_buf_ctrl fbc;
 549	struct mlx5_frag_buf    frag_buf;
 550	struct ib_umem		*umem;
 551	int			cqe_size;
 552	int			nent;
 553};
 554
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 555enum mlx5_ib_cq_pr_flags {
 556	MLX5_IB_CQ_PR_FLAGS_CQE_128_PAD	= 1 << 0,
 557	MLX5_IB_CQ_PR_FLAGS_REAL_TIME_TS = 1 << 1,
 558};
 559
 560struct mlx5_ib_cq {
 561	struct ib_cq		ibcq;
 562	struct mlx5_core_cq	mcq;
 563	struct mlx5_ib_cq_buf	buf;
 564	struct mlx5_db		db;
 565
 566	/* serialize access to the CQ
 567	 */
 568	spinlock_t		lock;
 569
 570	/* protect resize cq
 571	 */
 572	struct mutex		resize_mutex;
 573	struct mlx5_ib_cq_buf  *resize_buf;
 574	struct ib_umem	       *resize_umem;
 575	int			cqe_size;
 576	struct list_head	list_send_qp;
 577	struct list_head	list_recv_qp;
 578	u32			create_flags;
 579	struct list_head	wc_list;
 580	enum ib_cq_notify_flags notify_flags;
 581	struct work_struct	notify_work;
 582	u16			private_flags; /* Use mlx5_ib_cq_pr_flags */
 583};
 584
 585struct mlx5_ib_wc {
 586	struct ib_wc wc;
 587	struct list_head list;
 588};
 589
 590struct mlx5_ib_srq {
 591	struct ib_srq		ibsrq;
 592	struct mlx5_core_srq	msrq;
 593	struct mlx5_frag_buf	buf;
 594	struct mlx5_db		db;
 595	struct mlx5_frag_buf_ctrl fbc;
 596	u64		       *wrid;
 597	/* protect SRQ hanlding
 598	 */
 599	spinlock_t		lock;
 600	int			head;
 601	int			tail;
 602	u16			wqe_ctr;
 603	struct ib_umem	       *umem;
 604	/* serialize arming a SRQ
 605	 */
 606	struct mutex		mutex;
 607	int			wq_sig;
 608};
 609
 610struct mlx5_ib_xrcd {
 611	struct ib_xrcd		ibxrcd;
 612	u32			xrcdn;
 613};
 614
 615enum mlx5_ib_mtt_access_flags {
 616	MLX5_IB_MTT_READ  = (1 << 0),
 617	MLX5_IB_MTT_WRITE = (1 << 1),
 618};
 619
 620struct mlx5_user_mmap_entry {
 621	struct rdma_user_mmap_entry rdma_entry;
 622	u8 mmap_flag;
 623	u64 address;
 624	u32 page_idx;
 625};
 626
 627enum mlx5_mkey_type {
 628	MLX5_MKEY_MR = 1,
 629	MLX5_MKEY_MW,
 630	MLX5_MKEY_INDIRECT_DEVX,
 631};
 632
 633struct mlx5r_cache_rb_key {
 634	u8 ats:1;
 635	unsigned int access_mode;
 636	unsigned int access_flags;
 637	unsigned int ndescs;
 638};
 639
 640struct mlx5_ib_mkey {
 641	u32 key;
 642	enum mlx5_mkey_type type;
 643	unsigned int ndescs;
 644	struct wait_queue_head wait;
 645	refcount_t usecount;
 646	/* User Mkey must hold either a rb_key or a cache_ent. */
 647	struct mlx5r_cache_rb_key rb_key;
 648	struct mlx5_cache_ent *cache_ent;
 649};
 650
 651#define MLX5_IB_MTT_PRESENT (MLX5_IB_MTT_READ | MLX5_IB_MTT_WRITE)
 652
 653#define MLX5_IB_DM_MEMIC_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE   |\
 654					 IB_ACCESS_REMOTE_WRITE  |\
 655					 IB_ACCESS_REMOTE_READ   |\
 656					 IB_ACCESS_REMOTE_ATOMIC |\
 657					 IB_ZERO_BASED)
 658
 659#define MLX5_IB_DM_SW_ICM_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE   |\
 660					  IB_ACCESS_REMOTE_WRITE  |\
 661					  IB_ACCESS_REMOTE_READ   |\
 662					  IB_ZERO_BASED)
 663
 664#define mlx5_update_odp_stats(mr, counter_name, value)		\
 665	atomic64_add(value, &((mr)->odp_stats.counter_name))
 666
 667struct mlx5_ib_mr {
 668	struct ib_mr ibmr;
 669	struct mlx5_ib_mkey mmkey;
 670
 671	struct ib_umem *umem;
 672
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 673	union {
 674		/* Used only by kernel MRs (umem == NULL) */
 675		struct {
 676			void *descs;
 677			void *descs_alloc;
 678			dma_addr_t desc_map;
 679			int max_descs;
 680			int desc_size;
 681			int access_mode;
 682
 683			/* For Kernel IB_MR_TYPE_INTEGRITY */
 684			struct mlx5_core_sig_ctx *sig;
 685			struct mlx5_ib_mr *pi_mr;
 686			struct mlx5_ib_mr *klm_mr;
 687			struct mlx5_ib_mr *mtt_mr;
 688			u64 data_iova;
 689			u64 pi_iova;
 690			int meta_ndescs;
 691			int meta_length;
 692			int data_length;
 693		};
 694
 695		/* Used only by User MRs (umem != NULL) */
 696		struct {
 697			unsigned int page_shift;
 698			/* Current access_flags */
 699			int access_flags;
 700
 701			/* For User ODP */
 702			struct mlx5_ib_mr *parent;
 703			struct xarray implicit_children;
 704			union {
 705				struct work_struct work;
 706			} odp_destroy;
 707			struct ib_odp_counters odp_stats;
 708			bool is_odp_implicit;
 709		};
 710	};
 711};
 712
 713static inline bool is_odp_mr(struct mlx5_ib_mr *mr)
 714{
 715	return IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) && mr->umem &&
 716	       mr->umem->is_odp;
 717}
 718
 719static inline bool is_dmabuf_mr(struct mlx5_ib_mr *mr)
 720{
 721	return IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) && mr->umem &&
 722	       mr->umem->is_dmabuf;
 723}
 724
 725struct mlx5_ib_mw {
 726	struct ib_mw		ibmw;
 727	struct mlx5_ib_mkey	mmkey;
 
 
 
 
 
 
 728};
 729
 730struct mlx5_ib_umr_context {
 731	struct ib_cqe		cqe;
 732	enum ib_wc_status	status;
 733	struct completion	done;
 734};
 735
 736enum {
 737	MLX5_UMR_STATE_UNINIT,
 738	MLX5_UMR_STATE_ACTIVE,
 739	MLX5_UMR_STATE_RECOVER,
 740	MLX5_UMR_STATE_ERR,
 741};
 742
 743struct umr_common {
 744	struct ib_pd	*pd;
 745	struct ib_cq	*cq;
 746	struct ib_qp	*qp;
 747	/* Protects from UMR QP overflow
 748	 */
 749	struct semaphore	sem;
 750	/* Protects from using UMR while the UMR is not active
 751	 */
 752	struct mutex lock;
 753	unsigned int state;
 754};
 755
 756#define NUM_MKEYS_PER_PAGE \
 757	((PAGE_SIZE - sizeof(struct list_head)) / sizeof(u32))
 758
 759struct mlx5_mkeys_page {
 760	u32 mkeys[NUM_MKEYS_PER_PAGE];
 761	struct list_head list;
 762};
 763static_assert(sizeof(struct mlx5_mkeys_page) == PAGE_SIZE);
 764
 765struct mlx5_mkeys_queue {
 766	struct list_head pages_list;
 767	u32 num_pages;
 768	unsigned long ci;
 769	spinlock_t lock; /* sync list ops */
 770};
 771
 772struct mlx5_cache_ent {
 773	struct mlx5_mkeys_queue	mkeys_queue;
 774	u32			pending;
 
 
 775
 776	char                    name[4];
 777
 778	struct rb_node		node;
 779	struct mlx5r_cache_rb_key rb_key;
 
 
 
 780
 781	u8 is_tmp:1;
 782	u8 disabled:1;
 783	u8 fill_to_high_water:1;
 784
 785	/*
 786	 * - limit is the low water mark for stored mkeys, 2* limit is the
 
 
 
 
 787	 *   upper water mark.
 
 788	 */
 789	u32 in_use;
 
 790	u32 limit;
 
 791
 792	/* Statistics */
 793	u32                     miss;
 794
 795	struct mlx5_ib_dev     *dev;
 
 796	struct delayed_work	dwork;
 797};
 798
 799struct mlx5r_async_create_mkey {
 800	union {
 801		u32 in[MLX5_ST_SZ_BYTES(create_mkey_in)];
 802		u32 out[MLX5_ST_SZ_DW(create_mkey_out)];
 803	};
 804	struct mlx5_async_work cb_work;
 805	struct mlx5_cache_ent *ent;
 806	u32 mkey;
 807};
 808
 809struct mlx5_mkey_cache {
 810	struct workqueue_struct *wq;
 811	struct rb_root		rb_root;
 812	struct mutex		rb_lock;
 813	struct dentry		*fs_root;
 814	unsigned long		last_add;
 815	struct delayed_work	remove_ent_dwork;
 816};
 817
 
 
 818struct mlx5_ib_port_resources {
 
 819	struct mlx5_ib_gsi_qp *gsi;
 820	struct work_struct pkey_change_work;
 821};
 822
 823struct mlx5_ib_resources {
 824	struct ib_cq	*c0;
 825	u32 xrcdn0;
 826	u32 xrcdn1;
 827	struct ib_pd	*p0;
 828	struct ib_srq	*s0;
 829	struct ib_srq	*s1;
 830	struct mlx5_ib_port_resources ports[2];
 831};
 832
 833#define MAX_OPFC_RULES 2
 834
 835struct mlx5_ib_op_fc {
 836	struct mlx5_fc *fc;
 837	struct mlx5_flow_handle *rule[MAX_OPFC_RULES];
 838};
 839
 840struct mlx5_ib_counters {
 841	struct rdma_stat_desc *descs;
 842	size_t *offsets;
 843	u32 num_q_counters;
 844	u32 num_cong_counters;
 845	u32 num_ext_ppcnt_counters;
 846	u32 num_op_counters;
 847	u16 set_id;
 848	struct mlx5_ib_op_fc opfcs[MLX5_IB_OPCOUNTER_MAX];
 849};
 850
 851int mlx5_ib_fs_add_op_fc(struct mlx5_ib_dev *dev, u32 port_num,
 852			 struct mlx5_ib_op_fc *opfc,
 853			 enum mlx5_ib_optional_counter_type type);
 854
 855void mlx5_ib_fs_remove_op_fc(struct mlx5_ib_dev *dev,
 856			     struct mlx5_ib_op_fc *opfc,
 857			     enum mlx5_ib_optional_counter_type type);
 858
 859struct mlx5_ib_multiport_info;
 860
 861struct mlx5_ib_multiport {
 862	struct mlx5_ib_multiport_info *mpi;
 863	/* To be held when accessing the multiport info */
 864	spinlock_t mpi_lock;
 865};
 866
 867struct mlx5_roce {
 868	/* Protect mlx5_ib_get_netdev from invoking dev_hold() with a NULL
 869	 * netdev pointer
 870	 */
 871	rwlock_t		netdev_lock;
 872	struct net_device	*netdev;
 873	struct notifier_block	nb;
 874	struct netdev_net_notifier nn;
 875	struct notifier_block	mdev_nb;
 876	struct net_device	*tracking_netdev;
 877	atomic_t		tx_port_affinity;
 878	enum ib_port_state last_port_state;
 879	struct mlx5_ib_dev	*dev;
 880	u32			native_port_num;
 881};
 882
 883struct mlx5_ib_port {
 884	struct mlx5_ib_counters cnts;
 885	struct mlx5_ib_multiport mp;
 886	struct mlx5_ib_dbg_cc_params *dbg_cc_params;
 887	struct mlx5_roce roce;
 888	struct mlx5_eswitch_rep		*rep;
 889#ifdef CONFIG_MLX5_MACSEC
 890	struct mlx5_reserved_gids *reserved_gids;
 891#endif
 892};
 893
 894struct mlx5_ib_dbg_param {
 895	int			offset;
 896	struct mlx5_ib_dev	*dev;
 897	struct dentry		*dentry;
 898	u32			port_num;
 899};
 900
 901enum mlx5_ib_dbg_cc_types {
 902	MLX5_IB_DBG_CC_RP_CLAMP_TGT_RATE,
 903	MLX5_IB_DBG_CC_RP_CLAMP_TGT_RATE_ATI,
 904	MLX5_IB_DBG_CC_RP_TIME_RESET,
 905	MLX5_IB_DBG_CC_RP_BYTE_RESET,
 906	MLX5_IB_DBG_CC_RP_THRESHOLD,
 907	MLX5_IB_DBG_CC_RP_AI_RATE,
 908	MLX5_IB_DBG_CC_RP_MAX_RATE,
 909	MLX5_IB_DBG_CC_RP_HAI_RATE,
 910	MLX5_IB_DBG_CC_RP_MIN_DEC_FAC,
 911	MLX5_IB_DBG_CC_RP_MIN_RATE,
 912	MLX5_IB_DBG_CC_RP_RATE_TO_SET_ON_FIRST_CNP,
 913	MLX5_IB_DBG_CC_RP_DCE_TCP_G,
 914	MLX5_IB_DBG_CC_RP_DCE_TCP_RTT,
 915	MLX5_IB_DBG_CC_RP_RATE_REDUCE_MONITOR_PERIOD,
 916	MLX5_IB_DBG_CC_RP_INITIAL_ALPHA_VALUE,
 917	MLX5_IB_DBG_CC_RP_GD,
 918	MLX5_IB_DBG_CC_NP_MIN_TIME_BETWEEN_CNPS,
 919	MLX5_IB_DBG_CC_NP_CNP_DSCP,
 920	MLX5_IB_DBG_CC_NP_CNP_PRIO_MODE,
 921	MLX5_IB_DBG_CC_NP_CNP_PRIO,
 922	MLX5_IB_DBG_CC_GENERAL_RTT_RESP_DSCP_VALID,
 923	MLX5_IB_DBG_CC_GENERAL_RTT_RESP_DSCP,
 924	MLX5_IB_DBG_CC_MAX,
 925};
 926
 927struct mlx5_ib_dbg_cc_params {
 928	struct dentry			*root;
 929	struct mlx5_ib_dbg_param	params[MLX5_IB_DBG_CC_MAX];
 930};
 931
 932enum {
 933	MLX5_MAX_DELAY_DROP_TIMEOUT_MS = 100,
 934};
 935
 936struct mlx5_ib_delay_drop {
 937	struct mlx5_ib_dev     *dev;
 938	struct work_struct	delay_drop_work;
 939	/* serialize setting of delay drop */
 940	struct mutex		lock;
 941	u32			timeout;
 942	bool			activate;
 943	atomic_t		events_cnt;
 944	atomic_t		rqs_cnt;
 945	struct dentry		*dir_debugfs;
 946};
 947
 948enum mlx5_ib_stages {
 949	MLX5_IB_STAGE_INIT,
 950	MLX5_IB_STAGE_FS,
 951	MLX5_IB_STAGE_CAPS,
 952	MLX5_IB_STAGE_NON_DEFAULT_CB,
 953	MLX5_IB_STAGE_ROCE,
 954	MLX5_IB_STAGE_QP,
 955	MLX5_IB_STAGE_SRQ,
 956	MLX5_IB_STAGE_DEVICE_RESOURCES,
 957	MLX5_IB_STAGE_DEVICE_NOTIFIER,
 958	MLX5_IB_STAGE_ODP,
 959	MLX5_IB_STAGE_COUNTERS,
 960	MLX5_IB_STAGE_CONG_DEBUGFS,
 961	MLX5_IB_STAGE_UAR,
 962	MLX5_IB_STAGE_BFREG,
 963	MLX5_IB_STAGE_PRE_IB_REG_UMR,
 964	MLX5_IB_STAGE_WHITELIST_UID,
 965	MLX5_IB_STAGE_IB_REG,
 966	MLX5_IB_STAGE_POST_IB_REG_UMR,
 967	MLX5_IB_STAGE_DELAY_DROP,
 968	MLX5_IB_STAGE_RESTRACK,
 969	MLX5_IB_STAGE_MAX,
 970};
 971
 972struct mlx5_ib_stage {
 973	int (*init)(struct mlx5_ib_dev *dev);
 974	void (*cleanup)(struct mlx5_ib_dev *dev);
 975};
 976
 977#define STAGE_CREATE(_stage, _init, _cleanup) \
 978	.stage[_stage] = {.init = _init, .cleanup = _cleanup}
 979
 980struct mlx5_ib_profile {
 981	struct mlx5_ib_stage stage[MLX5_IB_STAGE_MAX];
 982};
 983
 984struct mlx5_ib_multiport_info {
 985	struct list_head list;
 986	struct mlx5_ib_dev *ibdev;
 987	struct mlx5_core_dev *mdev;
 988	struct notifier_block mdev_events;
 989	struct completion unref_comp;
 990	u64 sys_image_guid;
 991	u32 mdev_refcnt;
 992	bool is_master;
 993	bool unaffiliate;
 994};
 995
 996struct mlx5_ib_flow_action {
 997	struct ib_flow_action		ib_action;
 998	union {
 999		struct {
1000			u64			    ib_flags;
1001			struct mlx5_accel_esp_xfrm *ctx;
1002		} esp_aes_gcm;
1003		struct {
1004			struct mlx5_ib_dev *dev;
1005			u32 sub_type;
1006			union {
1007				struct mlx5_modify_hdr *modify_hdr;
1008				struct mlx5_pkt_reformat *pkt_reformat;
1009			};
1010		} flow_action_raw;
1011	};
1012};
1013
1014struct mlx5_dm {
1015	struct mlx5_core_dev *dev;
1016	/* This lock is used to protect the access to the shared
1017	 * allocation map when concurrent requests by different
1018	 * processes are handled.
1019	 */
1020	spinlock_t lock;
1021	DECLARE_BITMAP(memic_alloc_pages, MLX5_MAX_MEMIC_PAGES);
1022};
1023
1024struct mlx5_read_counters_attr {
1025	struct mlx5_fc *hw_cntrs_hndl;
1026	u64 *out;
1027	u32 flags;
1028};
1029
1030enum mlx5_ib_counters_type {
1031	MLX5_IB_COUNTERS_FLOW,
1032};
1033
1034struct mlx5_ib_mcounters {
1035	struct ib_counters ibcntrs;
1036	enum mlx5_ib_counters_type type;
1037	/* number of counters supported for this counters type */
1038	u32 counters_num;
1039	struct mlx5_fc *hw_cntrs_hndl;
1040	/* read function for this counters type */
1041	int (*read_counters)(struct ib_device *ibdev,
1042			     struct mlx5_read_counters_attr *read_attr);
1043	/* max index set as part of create_flow */
1044	u32 cntrs_max_index;
1045	/* number of counters data entries (<description,index> pair) */
1046	u32 ncounters;
1047	/* counters data array for descriptions and indexes */
1048	struct mlx5_ib_flow_counters_desc *counters_data;
1049	/* protects access to mcounters internal data */
1050	struct mutex mcntrs_mutex;
1051};
1052
1053static inline struct mlx5_ib_mcounters *
1054to_mcounters(struct ib_counters *ibcntrs)
1055{
1056	return container_of(ibcntrs, struct mlx5_ib_mcounters, ibcntrs);
1057}
1058
1059int parse_flow_flow_action(struct mlx5_ib_flow_action *maction,
1060			   bool is_egress,
1061			   struct mlx5_flow_act *action);
1062struct mlx5_ib_lb_state {
1063	/* protect the user_td */
1064	struct mutex		mutex;
1065	u32			user_td;
1066	int			qps;
1067	bool			enabled;
1068};
1069
1070struct mlx5_ib_pf_eq {
1071	struct notifier_block irq_nb;
1072	struct mlx5_ib_dev *dev;
1073	struct mlx5_eq *core;
1074	struct work_struct work;
1075	spinlock_t lock; /* Pagefaults spinlock */
1076	struct workqueue_struct *wq;
1077	mempool_t *pool;
1078};
1079
1080struct mlx5_devx_event_table {
1081	struct mlx5_nb devx_nb;
1082	/* serialize updating the event_xa */
1083	struct mutex event_xa_lock;
1084	struct xarray event_xa;
1085};
1086
1087struct mlx5_var_table {
1088	/* serialize updating the bitmap */
1089	struct mutex bitmap_lock;
1090	unsigned long *bitmap;
1091	u64 hw_start_addr;
1092	u32 stride_size;
1093	u64 num_var_hw_entries;
1094};
1095
1096struct mlx5_port_caps {
1097	bool has_smi;
1098	u8 ext_port_cap;
1099};
1100
1101
1102struct mlx5_special_mkeys {
1103	u32 dump_fill_mkey;
1104	__be32 null_mkey;
1105	__be32 terminate_scatter_list_mkey;
1106};
1107
1108struct mlx5_macsec {
1109	struct mutex lock; /* Protects mlx5_macsec internal contexts */
1110	struct list_head macsec_devices_list;
1111	struct notifier_block blocking_events_nb;
1112};
1113
1114struct mlx5_ib_dev {
1115	struct ib_device		ib_dev;
1116	struct mlx5_core_dev		*mdev;
1117	struct notifier_block		mdev_events;
1118	int				num_ports;
1119	/* serialize update of capability mask
1120	 */
1121	struct mutex			cap_mask_mutex;
1122	u8				ib_active:1;
1123	u8				is_rep:1;
1124	u8				lag_active:1;
1125	u8				wc_support:1;
1126	u8				fill_delay;
1127	struct umr_common		umrc;
1128	/* sync used page count stats
1129	 */
1130	struct mlx5_ib_resources	devr;
1131
1132	atomic_t			mkey_var;
1133	struct mlx5_mkey_cache		cache;
1134	struct timer_list		delay_timer;
1135	/* Prevents soft lock on massive reg MRs */
1136	struct mutex			slow_path_mutex;
1137	struct ib_odp_caps	odp_caps;
1138	u64			odp_max_size;
1139	struct mutex		odp_eq_mutex;
1140	struct mlx5_ib_pf_eq	odp_pf_eq;
1141
 
 
 
 
 
1142	struct xarray		odp_mkeys;
1143
 
1144	struct mlx5_ib_flow_db	*flow_db;
1145	/* protect resources needed as part of reset flow */
1146	spinlock_t		reset_flow_resource_lock;
1147	struct list_head	qp_list;
1148	/* Array with num_ports elements */
1149	struct mlx5_ib_port	*port;
1150	struct mlx5_sq_bfreg	bfreg;
1151	struct mlx5_sq_bfreg	wc_bfreg;
1152	struct mlx5_sq_bfreg	fp_bfreg;
1153	struct mlx5_ib_delay_drop	delay_drop;
1154	const struct mlx5_ib_profile	*profile;
1155
1156	struct mlx5_ib_lb_state		lb;
1157	u8			umr_fence;
1158	struct list_head	ib_dev_list;
1159	u64			sys_image_guid;
1160	struct mlx5_dm		dm;
1161	u16			devx_whitelist_uid;
1162	struct mlx5_srq_table   srq_table;
1163	struct mlx5_qp_table    qp_table;
1164	struct mlx5_async_ctx   async_ctx;
1165	struct mlx5_devx_event_table devx_event_table;
1166	struct mlx5_var_table var_table;
1167
1168	struct xarray sig_mrs;
1169	struct mlx5_port_caps port_caps[MLX5_MAX_PORTS];
1170	u16 pkey_table_len;
1171	u8 lag_ports;
1172	struct mlx5_special_mkeys mkeys;
1173
1174#ifdef CONFIG_MLX5_MACSEC
1175	struct mlx5_macsec macsec;
1176#endif
1177};
1178
1179static inline struct mlx5_ib_cq *to_mibcq(struct mlx5_core_cq *mcq)
1180{
1181	return container_of(mcq, struct mlx5_ib_cq, mcq);
1182}
1183
1184static inline struct mlx5_ib_xrcd *to_mxrcd(struct ib_xrcd *ibxrcd)
1185{
1186	return container_of(ibxrcd, struct mlx5_ib_xrcd, ibxrcd);
1187}
1188
1189static inline struct mlx5_ib_dev *to_mdev(struct ib_device *ibdev)
1190{
1191	return container_of(ibdev, struct mlx5_ib_dev, ib_dev);
1192}
1193
1194static inline struct mlx5_ib_dev *mr_to_mdev(struct mlx5_ib_mr *mr)
1195{
1196	return to_mdev(mr->ibmr.device);
1197}
1198
1199static inline struct mlx5_ib_dev *mlx5_udata_to_mdev(struct ib_udata *udata)
1200{
1201	struct mlx5_ib_ucontext *context = rdma_udata_to_drv_context(
1202		udata, struct mlx5_ib_ucontext, ibucontext);
1203
1204	return to_mdev(context->ibucontext.device);
1205}
1206
1207static inline struct mlx5_ib_cq *to_mcq(struct ib_cq *ibcq)
1208{
1209	return container_of(ibcq, struct mlx5_ib_cq, ibcq);
1210}
1211
1212static inline struct mlx5_ib_qp *to_mibqp(struct mlx5_core_qp *mqp)
1213{
1214	return container_of(mqp, struct mlx5_ib_qp_base, mqp)->container_mibqp;
1215}
1216
1217static inline struct mlx5_ib_rwq *to_mibrwq(struct mlx5_core_qp *core_qp)
1218{
1219	return container_of(core_qp, struct mlx5_ib_rwq, core_qp);
1220}
1221
1222static inline struct mlx5_ib_pd *to_mpd(struct ib_pd *ibpd)
1223{
1224	return container_of(ibpd, struct mlx5_ib_pd, ibpd);
1225}
1226
1227static inline struct mlx5_ib_srq *to_msrq(struct ib_srq *ibsrq)
1228{
1229	return container_of(ibsrq, struct mlx5_ib_srq, ibsrq);
1230}
1231
1232static inline struct mlx5_ib_qp *to_mqp(struct ib_qp *ibqp)
1233{
1234	return container_of(ibqp, struct mlx5_ib_qp, ibqp);
1235}
1236
1237static inline struct mlx5_ib_rwq *to_mrwq(struct ib_wq *ibwq)
1238{
1239	return container_of(ibwq, struct mlx5_ib_rwq, ibwq);
1240}
1241
1242static inline struct mlx5_ib_rwq_ind_table *to_mrwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
1243{
1244	return container_of(ib_rwq_ind_tbl, struct mlx5_ib_rwq_ind_table, ib_rwq_ind_tbl);
1245}
1246
1247static inline struct mlx5_ib_srq *to_mibsrq(struct mlx5_core_srq *msrq)
1248{
1249	return container_of(msrq, struct mlx5_ib_srq, msrq);
1250}
1251
 
 
 
 
 
1252static inline struct mlx5_ib_mr *to_mmr(struct ib_mr *ibmr)
1253{
1254	return container_of(ibmr, struct mlx5_ib_mr, ibmr);
1255}
1256
1257static inline struct mlx5_ib_mw *to_mmw(struct ib_mw *ibmw)
1258{
1259	return container_of(ibmw, struct mlx5_ib_mw, ibmw);
1260}
1261
1262static inline struct mlx5_ib_flow_action *
1263to_mflow_act(struct ib_flow_action *ibact)
1264{
1265	return container_of(ibact, struct mlx5_ib_flow_action, ib_action);
1266}
1267
1268static inline struct mlx5_user_mmap_entry *
1269to_mmmap(struct rdma_user_mmap_entry *rdma_entry)
1270{
1271	return container_of(rdma_entry,
1272		struct mlx5_user_mmap_entry, rdma_entry);
1273}
1274
1275int mlx5_ib_db_map_user(struct mlx5_ib_ucontext *context, unsigned long virt,
 
1276			struct mlx5_db *db);
1277void mlx5_ib_db_unmap_user(struct mlx5_ib_ucontext *context, struct mlx5_db *db);
1278void __mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
1279void mlx5_ib_cq_clean(struct mlx5_ib_cq *cq, u32 qpn, struct mlx5_ib_srq *srq);
1280void mlx5_ib_free_srq_wqe(struct mlx5_ib_srq *srq, int wqe_index);
1281int mlx5_ib_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
1282		      struct ib_udata *udata);
1283int mlx5_ib_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
1284static inline int mlx5_ib_destroy_ah(struct ib_ah *ah, u32 flags)
1285{
1286	return 0;
1287}
1288int mlx5_ib_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *init_attr,
1289		       struct ib_udata *udata);
1290int mlx5_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
1291		       enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
1292int mlx5_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr);
1293int mlx5_ib_destroy_srq(struct ib_srq *srq, struct ib_udata *udata);
1294int mlx5_ib_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
1295			  const struct ib_recv_wr **bad_wr);
1296int mlx5_ib_enable_lb(struct mlx5_ib_dev *dev, bool td, bool qp);
1297void mlx5_ib_disable_lb(struct mlx5_ib_dev *dev, bool td, bool qp);
1298int mlx5_ib_create_qp(struct ib_qp *qp, struct ib_qp_init_attr *init_attr,
1299		      struct ib_udata *udata);
 
1300int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1301		      int attr_mask, struct ib_udata *udata);
1302int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask,
1303		     struct ib_qp_init_attr *qp_init_attr);
1304int mlx5_ib_destroy_qp(struct ib_qp *qp, struct ib_udata *udata);
1305void mlx5_ib_drain_sq(struct ib_qp *qp);
1306void mlx5_ib_drain_rq(struct ib_qp *qp);
1307int mlx5_ib_read_wqe_sq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
1308			size_t buflen, size_t *bc);
1309int mlx5_ib_read_wqe_rq(struct mlx5_ib_qp *qp, int wqe_index, void *buffer,
1310			size_t buflen, size_t *bc);
1311int mlx5_ib_read_wqe_srq(struct mlx5_ib_srq *srq, int wqe_index, void *buffer,
1312			 size_t buflen, size_t *bc);
1313int mlx5_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
1314		      struct ib_udata *udata);
1315int mlx5_ib_destroy_cq(struct ib_cq *cq, struct ib_udata *udata);
1316int mlx5_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
1317int mlx5_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
1318int mlx5_ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
1319int mlx5_ib_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata);
1320struct ib_mr *mlx5_ib_get_dma_mr(struct ib_pd *pd, int acc);
1321struct ib_mr *mlx5_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
1322				  u64 virt_addr, int access_flags,
1323				  struct ib_udata *udata);
1324struct ib_mr *mlx5_ib_reg_user_mr_dmabuf(struct ib_pd *pd, u64 start,
1325					 u64 length, u64 virt_addr,
1326					 int fd, int access_flags,
1327					 struct ib_udata *udata);
1328int mlx5_ib_advise_mr(struct ib_pd *pd,
1329		      enum ib_uverbs_advise_mr_advice advice,
1330		      u32 flags,
1331		      struct ib_sge *sg_list,
1332		      u32 num_sge,
1333		      struct uverbs_attr_bundle *attrs);
1334int mlx5_ib_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
 
1335int mlx5_ib_dealloc_mw(struct ib_mw *mw);
 
 
1336struct mlx5_ib_mr *mlx5_ib_alloc_implicit_mr(struct mlx5_ib_pd *pd,
 
1337					     int access_flags);
1338void mlx5_ib_free_implicit_mr(struct mlx5_ib_mr *mr);
1339void mlx5_ib_free_odp_mr(struct mlx5_ib_mr *mr);
1340struct ib_mr *mlx5_ib_rereg_user_mr(struct ib_mr *ib_mr, int flags, u64 start,
1341				    u64 length, u64 virt_addr, int access_flags,
1342				    struct ib_pd *pd, struct ib_udata *udata);
1343int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
1344struct ib_mr *mlx5_ib_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
1345			       u32 max_num_sg);
1346struct ib_mr *mlx5_ib_alloc_mr_integrity(struct ib_pd *pd,
1347					 u32 max_num_sg,
1348					 u32 max_num_meta_sg);
1349int mlx5_ib_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
1350		      unsigned int *sg_offset);
1351int mlx5_ib_map_mr_sg_pi(struct ib_mr *ibmr, struct scatterlist *data_sg,
1352			 int data_sg_nents, unsigned int *data_sg_offset,
1353			 struct scatterlist *meta_sg, int meta_sg_nents,
1354			 unsigned int *meta_sg_offset);
1355int mlx5_ib_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
1356			const struct ib_wc *in_wc, const struct ib_grh *in_grh,
1357			const struct ib_mad *in, struct ib_mad *out,
1358			size_t *out_mad_size, u16 *out_mad_pkey_index);
1359int mlx5_ib_alloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
1360int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd, struct ib_udata *udata);
1361int mlx5_query_ext_port_caps(struct mlx5_ib_dev *dev, unsigned int port);
 
 
 
1362int mlx5_query_mad_ifc_system_image_guid(struct ib_device *ibdev,
1363					 __be64 *sys_image_guid);
1364int mlx5_query_mad_ifc_max_pkeys(struct ib_device *ibdev,
1365				 u16 *max_pkeys);
1366int mlx5_query_mad_ifc_vendor_id(struct ib_device *ibdev,
1367				 u32 *vendor_id);
1368int mlx5_query_mad_ifc_node_desc(struct mlx5_ib_dev *dev, char *node_desc);
1369int mlx5_query_mad_ifc_node_guid(struct mlx5_ib_dev *dev, __be64 *node_guid);
1370int mlx5_query_mad_ifc_pkey(struct ib_device *ibdev, u32 port, u16 index,
1371			    u16 *pkey);
1372int mlx5_query_mad_ifc_gids(struct ib_device *ibdev, u32 port, int index,
1373			    union ib_gid *gid);
1374int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
1375			    struct ib_port_attr *props);
1376int mlx5_ib_query_port(struct ib_device *ibdev, u32 port,
1377		       struct ib_port_attr *props);
1378void mlx5_ib_populate_pas(struct ib_umem *umem, size_t page_size, __be64 *pas,
1379			  u64 access_flags);
 
 
 
 
 
 
 
1380void mlx5_ib_copy_pas(u64 *old, u64 *new, int step, int num);
1381int mlx5_ib_get_cqe_size(struct ib_cq *ibcq);
1382int mlx5_mkey_cache_init(struct mlx5_ib_dev *dev);
1383void mlx5_mkey_cache_cleanup(struct mlx5_ib_dev *dev);
1384struct mlx5_cache_ent *
1385mlx5r_cache_create_ent_locked(struct mlx5_ib_dev *dev,
1386			      struct mlx5r_cache_rb_key rb_key,
1387			      bool persistent_entry);
1388
1389struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev,
1390				       int access_flags, int access_mode,
1391				       int ndescs);
 
1392
1393int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask,
1394			    struct ib_mr_status *mr_status);
1395struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
1396				struct ib_wq_init_attr *init_attr,
1397				struct ib_udata *udata);
1398int mlx5_ib_destroy_wq(struct ib_wq *wq, struct ib_udata *udata);
1399int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
1400		      u32 wq_attr_mask, struct ib_udata *udata);
1401int mlx5_ib_create_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_table,
1402				 struct ib_rwq_ind_table_init_attr *init_attr,
1403				 struct ib_udata *udata);
1404int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table);
 
 
 
 
 
1405struct ib_mr *mlx5_ib_reg_dm_mr(struct ib_pd *pd, struct ib_dm *dm,
1406				struct ib_dm_mr_attr *attr,
1407				struct uverbs_attr_bundle *attrs);
1408
1409#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
 
1410int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev);
1411int mlx5r_odp_create_eq(struct mlx5_ib_dev *dev, struct mlx5_ib_pf_eq *eq);
1412void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev);
1413int __init mlx5_ib_odp_init(void);
1414void mlx5_ib_odp_cleanup(void);
1415int mlx5_odp_init_mkey_cache(struct mlx5_ib_dev *dev);
1416void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
1417			   struct mlx5_ib_mr *mr, int flags);
1418
1419int mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
1420			       enum ib_uverbs_advise_mr_advice advice,
1421			       u32 flags, struct ib_sge *sg_list, u32 num_sge);
1422int mlx5_ib_init_odp_mr(struct mlx5_ib_mr *mr);
1423int mlx5_ib_init_dmabuf_mr(struct mlx5_ib_mr *mr);
1424#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
1425static inline int mlx5_ib_odp_init_one(struct mlx5_ib_dev *ibdev) { return 0; }
1426static inline int mlx5r_odp_create_eq(struct mlx5_ib_dev *dev,
1427				      struct mlx5_ib_pf_eq *eq)
1428{
1429	return 0;
1430}
 
 
1431static inline void mlx5_ib_odp_cleanup_one(struct mlx5_ib_dev *ibdev) {}
1432static inline int mlx5_ib_odp_init(void) { return 0; }
1433static inline void mlx5_ib_odp_cleanup(void)				    {}
1434static inline int mlx5_odp_init_mkey_cache(struct mlx5_ib_dev *dev)
1435{
1436	return 0;
1437}
1438static inline void mlx5_odp_populate_xlt(void *xlt, size_t idx, size_t nentries,
1439					 struct mlx5_ib_mr *mr, int flags) {}
1440
1441static inline int
1442mlx5_ib_advise_mr_prefetch(struct ib_pd *pd,
1443			   enum ib_uverbs_advise_mr_advice advice, u32 flags,
1444			   struct ib_sge *sg_list, u32 num_sge)
1445{
1446	return -EOPNOTSUPP;
1447}
1448static inline int mlx5_ib_init_odp_mr(struct mlx5_ib_mr *mr)
1449{
1450	return -EOPNOTSUPP;
1451}
1452static inline int mlx5_ib_init_dmabuf_mr(struct mlx5_ib_mr *mr)
1453{
1454	return -EOPNOTSUPP;
1455}
1456#endif /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
1457
1458extern const struct mmu_interval_notifier_ops mlx5_mn_ops;
1459
1460/* Needed for rep profile */
1461void __mlx5_ib_remove(struct mlx5_ib_dev *dev,
1462		      const struct mlx5_ib_profile *profile,
1463		      int stage);
1464int __mlx5_ib_add(struct mlx5_ib_dev *dev,
1465		  const struct mlx5_ib_profile *profile);
1466
1467int mlx5_ib_get_vf_config(struct ib_device *device, int vf,
1468			  u32 port, struct ifla_vf_info *info);
1469int mlx5_ib_set_vf_link_state(struct ib_device *device, int vf,
1470			      u32 port, int state);
1471int mlx5_ib_get_vf_stats(struct ib_device *device, int vf,
1472			 u32 port, struct ifla_vf_stats *stats);
1473int mlx5_ib_get_vf_guid(struct ib_device *device, int vf, u32 port,
1474			struct ifla_vf_guid *node_guid,
1475			struct ifla_vf_guid *port_guid);
1476int mlx5_ib_set_vf_guid(struct ib_device *device, int vf, u32 port,
1477			u64 guid, int type);
1478
1479__be16 mlx5_get_roce_udp_sport_min(const struct mlx5_ib_dev *dev,
1480				   const struct ib_gid_attr *attr);
1481
1482void mlx5_ib_cleanup_cong_debugfs(struct mlx5_ib_dev *dev, u32 port_num);
1483void mlx5_ib_init_cong_debugfs(struct mlx5_ib_dev *dev, u32 port_num);
1484
1485/* GSI QP helper functions */
1486int mlx5_ib_create_gsi(struct ib_pd *pd, struct mlx5_ib_qp *mqp,
1487		       struct ib_qp_init_attr *attr);
1488int mlx5_ib_destroy_gsi(struct mlx5_ib_qp *mqp);
1489int mlx5_ib_gsi_modify_qp(struct ib_qp *qp, struct ib_qp_attr *attr,
1490			  int attr_mask);
1491int mlx5_ib_gsi_query_qp(struct ib_qp *qp, struct ib_qp_attr *qp_attr,
1492			 int qp_attr_mask,
1493			 struct ib_qp_init_attr *qp_init_attr);
1494int mlx5_ib_gsi_post_send(struct ib_qp *qp, const struct ib_send_wr *wr,
1495			  const struct ib_send_wr **bad_wr);
1496int mlx5_ib_gsi_post_recv(struct ib_qp *qp, const struct ib_recv_wr *wr,
1497			  const struct ib_recv_wr **bad_wr);
1498void mlx5_ib_gsi_pkey_change(struct mlx5_ib_gsi_qp *gsi);
1499
1500int mlx5_ib_generate_wc(struct ib_cq *ibcq, struct ib_wc *wc);
1501
1502void mlx5_ib_free_bfreg(struct mlx5_ib_dev *dev, struct mlx5_bfreg_info *bfregi,
1503			int bfregn);
1504struct mlx5_ib_dev *mlx5_ib_get_ibdev_from_mpi(struct mlx5_ib_multiport_info *mpi);
1505struct mlx5_core_dev *mlx5_ib_get_native_port_mdev(struct mlx5_ib_dev *dev,
1506						   u32 ib_port_num,
1507						   u32 *native_port_num);
1508void mlx5_ib_put_native_port_mdev(struct mlx5_ib_dev *dev,
1509				  u32 port_num);
1510
1511extern const struct uapi_definition mlx5_ib_devx_defs[];
1512extern const struct uapi_definition mlx5_ib_flow_defs[];
1513extern const struct uapi_definition mlx5_ib_qos_defs[];
1514extern const struct uapi_definition mlx5_ib_std_types_defs[];
1515
 
 
 
 
 
 
 
 
1516static inline int is_qp1(enum ib_qp_type qp_type)
1517{
1518	return qp_type == MLX5_IB_QPT_HW_GSI || qp_type == IB_QPT_GSI;
1519}
1520
 
 
 
1521static inline u32 check_cq_create_flags(u32 flags)
1522{
1523	/*
1524	 * It returns non-zero value for unsupported CQ
1525	 * create flags, otherwise it returns zero.
1526	 */
1527	return (flags & ~(IB_UVERBS_CQ_FLAGS_IGNORE_OVERRUN |
1528			  IB_UVERBS_CQ_FLAGS_TIMESTAMP_COMPLETION));
1529}
1530
1531static inline int verify_assign_uidx(u8 cqe_version, u32 cmd_uidx,
1532				     u32 *user_index)
1533{
1534	if (cqe_version) {
1535		if ((cmd_uidx == MLX5_IB_DEFAULT_UIDX) ||
1536		    (cmd_uidx & ~MLX5_USER_ASSIGNED_UIDX_MASK))
1537			return -EINVAL;
1538		*user_index = cmd_uidx;
1539	} else {
1540		*user_index = MLX5_IB_DEFAULT_UIDX;
1541	}
1542
1543	return 0;
1544}
1545
1546static inline int get_qp_user_index(struct mlx5_ib_ucontext *ucontext,
1547				    struct mlx5_ib_create_qp *ucmd,
1548				    int inlen,
1549				    u32 *user_index)
1550{
1551	u8 cqe_version = ucontext->cqe_version;
1552
1553	if ((offsetofend(typeof(*ucmd), uidx) <= inlen) && !cqe_version &&
1554	    (ucmd->uidx == MLX5_IB_DEFAULT_UIDX))
1555		return 0;
1556
1557	if ((offsetofend(typeof(*ucmd), uidx) <= inlen) != !!cqe_version)
1558		return -EINVAL;
1559
1560	return verify_assign_uidx(cqe_version, ucmd->uidx, user_index);
1561}
1562
1563static inline int get_srq_user_index(struct mlx5_ib_ucontext *ucontext,
1564				     struct mlx5_ib_create_srq *ucmd,
1565				     int inlen,
1566				     u32 *user_index)
1567{
1568	u8 cqe_version = ucontext->cqe_version;
1569
1570	if ((offsetofend(typeof(*ucmd), uidx) <= inlen) && !cqe_version &&
1571	    (ucmd->uidx == MLX5_IB_DEFAULT_UIDX))
1572		return 0;
1573
1574	if ((offsetofend(typeof(*ucmd), uidx) <= inlen) != !!cqe_version)
1575		return -EINVAL;
1576
1577	return verify_assign_uidx(cqe_version, ucmd->uidx, user_index);
1578}
1579
1580static inline int get_uars_per_sys_page(struct mlx5_ib_dev *dev, bool lib_support)
1581{
1582	return lib_support && MLX5_CAP_GEN(dev->mdev, uar_4k) ?
1583				MLX5_UARS_IN_PAGE : 1;
1584}
1585
1586extern void *xlt_emergency_page;
 
 
 
 
 
 
 
1587
1588int bfregn_to_uar_index(struct mlx5_ib_dev *dev,
1589			struct mlx5_bfreg_info *bfregi, u32 bfregn,
1590			bool dyn_bfreg);
1591
1592static inline int mlx5r_store_odp_mkey(struct mlx5_ib_dev *dev,
1593				       struct mlx5_ib_mkey *mmkey)
1594{
1595	refcount_set(&mmkey->usecount, 1);
 
1596
1597	return xa_err(xa_store(&dev->odp_mkeys, mlx5_base_mkey(mmkey->key),
1598			       mmkey, GFP_KERNEL));
1599}
 
1600
1601/* deref an mkey that can participate in ODP flow */
1602static inline void mlx5r_deref_odp_mkey(struct mlx5_ib_mkey *mmkey)
1603{
1604	if (refcount_dec_and_test(&mmkey->usecount))
1605		wake_up(&mmkey->wait);
1606}
1607
1608/* deref an mkey that can participate in ODP flow and wait for relese */
1609static inline void mlx5r_deref_wait_odp_mkey(struct mlx5_ib_mkey *mmkey)
1610{
1611	mlx5r_deref_odp_mkey(mmkey);
1612	wait_event(mmkey->wait, refcount_read(&mmkey->usecount) == 0);
 
1613}
1614
1615int mlx5_ib_test_wc(struct mlx5_ib_dev *dev);
1616
1617static inline bool mlx5_ib_lag_should_assign_affinity(struct mlx5_ib_dev *dev)
1618{
1619	/*
1620	 * If the driver is in hash mode and the port_select_flow_table_bypass cap
1621	 * is supported, it means that the driver no longer needs to assign the port
1622	 * affinity by default. If a user wants to set the port affinity explicitly,
1623	 * the user has a dedicated API to do that, so there is no need to assign
1624	 * the port affinity by default.
1625	 */
1626	if (dev->lag_active &&
1627	    mlx5_lag_mode_is_hash(dev->mdev) &&
1628	    MLX5_CAP_PORT_SELECTION(dev->mdev, port_select_flow_table_bypass))
1629		return 0;
1630
1631	if (mlx5_lag_is_lacp_owner(dev->mdev) && !dev->lag_active)
1632		return 0;
1633
1634	return dev->lag_active ||
1635		(MLX5_CAP_GEN(dev->mdev, num_lag_ports) > 1 &&
1636		 MLX5_CAP_GEN(dev->mdev, lag_tx_port_affinity));
1637}
1638
1639static inline bool rt_supported(int ts_cap)
1640{
1641	return ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_REAL_TIME ||
1642	       ts_cap == MLX5_TIMESTAMP_FORMAT_CAP_FREE_RUNNING_AND_REAL_TIME;
1643}
1644
1645/*
1646 * PCI Peer to Peer is a trainwreck. If no switch is present then things
1647 * sometimes work, depending on the pci_distance_p2p logic for excluding broken
1648 * root complexes. However if a switch is present in the path, then things get
1649 * really ugly depending on how the switch is setup. This table assumes that the
1650 * root complex is strict and is validating that all req/reps are matches
1651 * perfectly - so any scenario where it sees only half the transaction is a
1652 * failure.
1653 *
1654 * CR/RR/DT  ATS RO P2P
1655 * 00X       X   X  OK
1656 * 010       X   X  fails (request is routed to root but root never sees comp)
1657 * 011       0   X  fails (request is routed to root but root never sees comp)
1658 * 011       1   X  OK
1659 * 10X       X   1  OK
1660 * 101       X   0  fails (completion is routed to root but root didn't see req)
1661 * 110       X   0  SLOW
1662 * 111       0   0  SLOW
1663 * 111       1   0  fails (completion is routed to root but root didn't see req)
1664 * 111       1   1  OK
1665 *
1666 * Unfortunately we cannot reliably know if a switch is present or what the
1667 * CR/RR/DT ACS settings are, as in a VM that is all hidden. Assume that
1668 * CR/RR/DT is 111 if the ATS cap is enabled and follow the last three rows.
1669 *
1670 * For now assume if the umem is a dma_buf then it is P2P.
1671 */
1672static inline bool mlx5_umem_needs_ats(struct mlx5_ib_dev *dev,
1673				       struct ib_umem *umem, int access_flags)
1674{
1675	if (!MLX5_CAP_GEN(dev->mdev, ats) || !umem->is_dmabuf)
1676		return false;
1677	return access_flags & IB_ACCESS_RELAXED_ORDERING;
1678}
1679
1680int set_roce_addr(struct mlx5_ib_dev *dev, u32 port_num,
1681		  unsigned int index, const union ib_gid *gid,
1682		  const struct ib_gid_attr *attr);
1683#endif /* MLX5_IB_H */