1219820Sjeff/* 2219820Sjeff * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. 3219820Sjeff * Copyright (c) 2004 Infinicon Corporation. All rights reserved. 4219820Sjeff * Copyright (c) 2004 Intel Corporation. All rights reserved. 5219820Sjeff * Copyright (c) 2004 Topspin Corporation. All rights reserved. 6219820Sjeff * Copyright (c) 2004 Voltaire Corporation. All rights reserved. 7219820Sjeff * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 8219820Sjeff * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. 9219820Sjeff * 10219820Sjeff * This software is available to you under a choice of one of two 11219820Sjeff * licenses. You may choose to be licensed under the terms of the GNU 12219820Sjeff * General Public License (GPL) Version 2, available from the file 13219820Sjeff * COPYING in the main directory of this source tree, or the 14219820Sjeff * OpenIB.org BSD license below: 15219820Sjeff * 16219820Sjeff * Redistribution and use in source and binary forms, with or 17219820Sjeff * without modification, are permitted provided that the following 18219820Sjeff * conditions are met: 19219820Sjeff * 20219820Sjeff * - Redistributions of source code must retain the above 21219820Sjeff * copyright notice, this list of conditions and the following 22219820Sjeff * disclaimer. 23219820Sjeff * 24219820Sjeff * - Redistributions in binary form must reproduce the above 25219820Sjeff * copyright notice, this list of conditions and the following 26219820Sjeff * disclaimer in the documentation and/or other materials 27219820Sjeff * provided with the distribution. 28219820Sjeff * 29219820Sjeff * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 30219820Sjeff * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 31219820Sjeff * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 32219820Sjeff * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 33219820Sjeff * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 34219820Sjeff * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 35219820Sjeff * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 36219820Sjeff * SOFTWARE. 37219820Sjeff */ 38219820Sjeff 39219820Sjeff#if !defined(IB_VERBS_H) 40219820Sjeff#define IB_VERBS_H 41219820Sjeff 42219820Sjeff#include <linux/types.h> 43219820Sjeff#include <linux/device.h> 44219820Sjeff#include <linux/mm.h> 45219820Sjeff#include <linux/dma-mapping.h> 46219820Sjeff#include <linux/kref.h> 47219820Sjeff#include <linux/list.h> 48219820Sjeff#include <linux/rwsem.h> 49219820Sjeff#include <linux/scatterlist.h> 50219820Sjeff 51219820Sjeff#include <asm/atomic.h> 52219820Sjeff#include <asm/uaccess.h> 53219820Sjeff#include <linux/rbtree.h> 54219820Sjeff#include <linux/mutex.h> 55219820Sjeff 56219820Sjeffunion ib_gid { 57219820Sjeff u8 raw[16]; 58219820Sjeff struct { 59219820Sjeff __be64 subnet_prefix; 60219820Sjeff __be64 interface_id; 61219820Sjeff } global; 62219820Sjeff}; 63219820Sjeff 64219820Sjeffenum rdma_node_type { 65219820Sjeff /* IB values map to NodeInfo:NodeType. */ 66219820Sjeff RDMA_NODE_IB_CA = 1, 67219820Sjeff RDMA_NODE_IB_SWITCH, 68219820Sjeff RDMA_NODE_IB_ROUTER, 69219820Sjeff RDMA_NODE_RNIC 70219820Sjeff}; 71219820Sjeff 72219820Sjeffenum rdma_transport_type { 73219820Sjeff RDMA_TRANSPORT_IB, 74219820Sjeff RDMA_TRANSPORT_IWARP 75219820Sjeff}; 76219820Sjeff 77219820Sjeffenum rdma_transport_type 78219820Sjeffrdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__; 79219820Sjeff 80219820Sjeffenum rdma_link_layer { 81219820Sjeff IB_LINK_LAYER_UNSPECIFIED, 82219820Sjeff IB_LINK_LAYER_INFINIBAND, 83219820Sjeff IB_LINK_LAYER_ETHERNET, 84219820Sjeff}; 85219820Sjeff 86219820Sjeffenum ib_device_cap_flags { 87219820Sjeff IB_DEVICE_RESIZE_MAX_WR = 1, 88219820Sjeff IB_DEVICE_BAD_PKEY_CNTR = (1<<1), 89219820Sjeff IB_DEVICE_BAD_QKEY_CNTR = (1<<2), 90219820Sjeff IB_DEVICE_RAW_MULTI = (1<<3), 91219820Sjeff IB_DEVICE_AUTO_PATH_MIG = (1<<4), 92219820Sjeff IB_DEVICE_CHANGE_PHY_PORT = (1<<5), 93219820Sjeff IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6), 94219820Sjeff IB_DEVICE_CURR_QP_STATE_MOD = (1<<7), 95219820Sjeff IB_DEVICE_SHUTDOWN_PORT = (1<<8), 96219820Sjeff IB_DEVICE_INIT_TYPE = (1<<9), 97219820Sjeff IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10), 98219820Sjeff IB_DEVICE_SYS_IMAGE_GUID = (1<<11), 99219820Sjeff IB_DEVICE_RC_RNR_NAK_GEN = (1<<12), 100219820Sjeff IB_DEVICE_SRQ_RESIZE = (1<<13), 101219820Sjeff IB_DEVICE_N_NOTIFY_CQ = (1<<14), 102219820Sjeff IB_DEVICE_LOCAL_DMA_LKEY = (1<<15), 103219820Sjeff IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */ 104219820Sjeff IB_DEVICE_MEM_WINDOW = (1<<17), 105219820Sjeff /* 106219820Sjeff * Devices should set IB_DEVICE_UD_IP_SUM if they support 107219820Sjeff * insertion of UDP and TCP checksum on outgoing UD IPoIB 108219820Sjeff * messages and can verify the validity of checksum for 109219820Sjeff * incoming messages. Setting this flag implies that the 110219820Sjeff * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode. 111219820Sjeff */ 112219820Sjeff IB_DEVICE_UD_IP_CSUM = (1<<18), 113219820Sjeff IB_DEVICE_UD_TSO = (1<<19), 114219820Sjeff IB_DEVICE_XRC = (1<<20), 115219820Sjeff IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21), 116219820Sjeff IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22), 117219820Sjeff}; 118219820Sjeff 119219820Sjeffenum ib_atomic_cap { 120219820Sjeff IB_ATOMIC_NONE, 121219820Sjeff IB_ATOMIC_HCA, 122219820Sjeff IB_ATOMIC_GLOB 123219820Sjeff}; 124219820Sjeff 125219820Sjeffstruct ib_device_attr { 126219820Sjeff u64 fw_ver; 127219820Sjeff __be64 sys_image_guid; 128219820Sjeff u64 max_mr_size; 129219820Sjeff u64 page_size_cap; 130219820Sjeff u32 vendor_id; 131219820Sjeff u32 vendor_part_id; 132219820Sjeff u32 hw_ver; 133219820Sjeff int max_qp; 134219820Sjeff int max_qp_wr; 135219820Sjeff int device_cap_flags; 136219820Sjeff int max_sge; 137219820Sjeff int max_sge_rd; 138219820Sjeff int max_cq; 139219820Sjeff int max_cqe; 140219820Sjeff int max_mr; 141219820Sjeff int max_pd; 142219820Sjeff int max_qp_rd_atom; 143219820Sjeff int max_ee_rd_atom; 144219820Sjeff int max_res_rd_atom; 145219820Sjeff int max_qp_init_rd_atom; 146219820Sjeff int max_ee_init_rd_atom; 147219820Sjeff enum ib_atomic_cap atomic_cap; 148219820Sjeff enum ib_atomic_cap masked_atomic_cap; 149219820Sjeff int max_ee; 150219820Sjeff int max_rdd; 151219820Sjeff int max_mw; 152219820Sjeff int max_raw_ipv6_qp; 153219820Sjeff int max_raw_ethy_qp; 154219820Sjeff int max_mcast_grp; 155219820Sjeff int max_mcast_qp_attach; 156219820Sjeff int max_total_mcast_qp_attach; 157219820Sjeff int max_ah; 158219820Sjeff int max_fmr; 159219820Sjeff int max_map_per_fmr; 160219820Sjeff int max_srq; 161219820Sjeff int max_srq_wr; 162219820Sjeff int max_srq_sge; 163219820Sjeff unsigned int max_fast_reg_page_list_len; 164219820Sjeff u16 max_pkeys; 165219820Sjeff u8 local_ca_ack_delay; 166219820Sjeff}; 167219820Sjeff 168219820Sjeffenum ib_mtu { 169219820Sjeff IB_MTU_256 = 1, 170219820Sjeff IB_MTU_512 = 2, 171219820Sjeff IB_MTU_1024 = 3, 172219820Sjeff IB_MTU_2048 = 4, 173219820Sjeff IB_MTU_4096 = 5 174219820Sjeff}; 175219820Sjeff 176219820Sjeffstatic inline int ib_mtu_enum_to_int(enum ib_mtu mtu) 177219820Sjeff{ 178219820Sjeff switch (mtu) { 179219820Sjeff case IB_MTU_256: return 256; 180219820Sjeff case IB_MTU_512: return 512; 181219820Sjeff case IB_MTU_1024: return 1024; 182219820Sjeff case IB_MTU_2048: return 2048; 183219820Sjeff case IB_MTU_4096: return 4096; 184219820Sjeff default: return -1; 185219820Sjeff } 186219820Sjeff} 187219820Sjeff 188219820Sjeffenum ib_port_state { 189219820Sjeff IB_PORT_NOP = 0, 190219820Sjeff IB_PORT_DOWN = 1, 191219820Sjeff IB_PORT_INIT = 2, 192219820Sjeff IB_PORT_ARMED = 3, 193219820Sjeff IB_PORT_ACTIVE = 4, 194219820Sjeff IB_PORT_ACTIVE_DEFER = 5 195219820Sjeff}; 196219820Sjeff 197219820Sjeffenum ib_port_cap_flags { 198219820Sjeff IB_PORT_SM = 1 << 1, 199219820Sjeff IB_PORT_NOTICE_SUP = 1 << 2, 200219820Sjeff IB_PORT_TRAP_SUP = 1 << 3, 201219820Sjeff IB_PORT_OPT_IPD_SUP = 1 << 4, 202219820Sjeff IB_PORT_AUTO_MIGR_SUP = 1 << 5, 203219820Sjeff IB_PORT_SL_MAP_SUP = 1 << 6, 204219820Sjeff IB_PORT_MKEY_NVRAM = 1 << 7, 205219820Sjeff IB_PORT_PKEY_NVRAM = 1 << 8, 206219820Sjeff IB_PORT_LED_INFO_SUP = 1 << 9, 207219820Sjeff IB_PORT_SM_DISABLED = 1 << 10, 208219820Sjeff IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, 209219820Sjeff IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, 210219820Sjeff IB_PORT_CM_SUP = 1 << 16, 211219820Sjeff IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, 212219820Sjeff IB_PORT_REINIT_SUP = 1 << 18, 213219820Sjeff IB_PORT_DEVICE_MGMT_SUP = 1 << 19, 214219820Sjeff IB_PORT_VENDOR_CLASS_SUP = 1 << 20, 215219820Sjeff IB_PORT_DR_NOTICE_SUP = 1 << 21, 216219820Sjeff IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, 217219820Sjeff IB_PORT_BOOT_MGMT_SUP = 1 << 23, 218219820Sjeff IB_PORT_LINK_LATENCY_SUP = 1 << 24, 219219820Sjeff IB_PORT_CLIENT_REG_SUP = 1 << 25 220219820Sjeff}; 221219820Sjeff 222219820Sjeffenum ib_port_width { 223219820Sjeff IB_WIDTH_1X = 1, 224219820Sjeff IB_WIDTH_4X = 2, 225219820Sjeff IB_WIDTH_8X = 4, 226219820Sjeff IB_WIDTH_12X = 8 227219820Sjeff}; 228219820Sjeff 229219820Sjeffstatic inline int ib_width_enum_to_int(enum ib_port_width width) 230219820Sjeff{ 231219820Sjeff switch (width) { 232219820Sjeff case IB_WIDTH_1X: return 1; 233219820Sjeff case IB_WIDTH_4X: return 4; 234219820Sjeff case IB_WIDTH_8X: return 8; 235219820Sjeff case IB_WIDTH_12X: return 12; 236219820Sjeff default: return -1; 237219820Sjeff } 238219820Sjeff} 239219820Sjeff 240219820Sjeffstruct ib_protocol_stats { 241219820Sjeff /* TBD... */ 242219820Sjeff}; 243219820Sjeff 244219820Sjeffstruct iw_protocol_stats { 245219820Sjeff u64 ipInReceives; 246219820Sjeff u64 ipInHdrErrors; 247219820Sjeff u64 ipInTooBigErrors; 248219820Sjeff u64 ipInNoRoutes; 249219820Sjeff u64 ipInAddrErrors; 250219820Sjeff u64 ipInUnknownProtos; 251219820Sjeff u64 ipInTruncatedPkts; 252219820Sjeff u64 ipInDiscards; 253219820Sjeff u64 ipInDelivers; 254219820Sjeff u64 ipOutForwDatagrams; 255219820Sjeff u64 ipOutRequests; 256219820Sjeff u64 ipOutDiscards; 257219820Sjeff u64 ipOutNoRoutes; 258219820Sjeff u64 ipReasmTimeout; 259219820Sjeff u64 ipReasmReqds; 260219820Sjeff u64 ipReasmOKs; 261219820Sjeff u64 ipReasmFails; 262219820Sjeff u64 ipFragOKs; 263219820Sjeff u64 ipFragFails; 264219820Sjeff u64 ipFragCreates; 265219820Sjeff u64 ipInMcastPkts; 266219820Sjeff u64 ipOutMcastPkts; 267219820Sjeff u64 ipInBcastPkts; 268219820Sjeff u64 ipOutBcastPkts; 269219820Sjeff 270219820Sjeff u64 tcpRtoAlgorithm; 271219820Sjeff u64 tcpRtoMin; 272219820Sjeff u64 tcpRtoMax; 273219820Sjeff u64 tcpMaxConn; 274219820Sjeff u64 tcpActiveOpens; 275219820Sjeff u64 tcpPassiveOpens; 276219820Sjeff u64 tcpAttemptFails; 277219820Sjeff u64 tcpEstabResets; 278219820Sjeff u64 tcpCurrEstab; 279219820Sjeff u64 tcpInSegs; 280219820Sjeff u64 tcpOutSegs; 281219820Sjeff u64 tcpRetransSegs; 282219820Sjeff u64 tcpInErrs; 283219820Sjeff u64 tcpOutRsts; 284219820Sjeff}; 285219820Sjeff 286219820Sjeffunion rdma_protocol_stats { 287219820Sjeff struct ib_protocol_stats ib; 288219820Sjeff struct iw_protocol_stats iw; 289219820Sjeff}; 290219820Sjeff 291219820Sjeffstruct ib_port_attr { 292219820Sjeff enum ib_port_state state; 293219820Sjeff enum ib_mtu max_mtu; 294219820Sjeff enum ib_mtu active_mtu; 295219820Sjeff int gid_tbl_len; 296219820Sjeff u32 port_cap_flags; 297219820Sjeff u32 max_msg_sz; 298219820Sjeff u32 bad_pkey_cntr; 299219820Sjeff u32 qkey_viol_cntr; 300219820Sjeff u16 pkey_tbl_len; 301219820Sjeff u16 lid; 302219820Sjeff u16 sm_lid; 303219820Sjeff u8 lmc; 304219820Sjeff u8 max_vl_num; 305219820Sjeff u8 sm_sl; 306219820Sjeff u8 subnet_timeout; 307219820Sjeff u8 init_type_reply; 308219820Sjeff u8 active_width; 309219820Sjeff u8 active_speed; 310219820Sjeff u8 phys_state; 311219820Sjeff enum rdma_link_layer link_layer; 312219820Sjeff}; 313219820Sjeff 314219820Sjeffenum ib_device_modify_flags { 315219820Sjeff IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, 316219820Sjeff IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 317219820Sjeff}; 318219820Sjeff 319219820Sjeffstruct ib_device_modify { 320219820Sjeff u64 sys_image_guid; 321219820Sjeff char node_desc[64]; 322219820Sjeff}; 323219820Sjeff 324219820Sjeffenum ib_port_modify_flags { 325219820Sjeff IB_PORT_SHUTDOWN = 1, 326219820Sjeff IB_PORT_INIT_TYPE = (1<<2), 327219820Sjeff IB_PORT_RESET_QKEY_CNTR = (1<<3) 328219820Sjeff}; 329219820Sjeff 330219820Sjeffstruct ib_port_modify { 331219820Sjeff u32 set_port_cap_mask; 332219820Sjeff u32 clr_port_cap_mask; 333219820Sjeff u8 init_type; 334219820Sjeff}; 335219820Sjeff 336219820Sjeffenum ib_event_type { 337219820Sjeff IB_EVENT_CQ_ERR, 338219820Sjeff IB_EVENT_QP_FATAL, 339219820Sjeff IB_EVENT_QP_REQ_ERR, 340219820Sjeff IB_EVENT_QP_ACCESS_ERR, 341219820Sjeff IB_EVENT_COMM_EST, 342219820Sjeff IB_EVENT_SQ_DRAINED, 343219820Sjeff IB_EVENT_PATH_MIG, 344219820Sjeff IB_EVENT_PATH_MIG_ERR, 345219820Sjeff IB_EVENT_DEVICE_FATAL, 346219820Sjeff IB_EVENT_PORT_ACTIVE, 347219820Sjeff IB_EVENT_PORT_ERR, 348219820Sjeff IB_EVENT_LID_CHANGE, 349219820Sjeff IB_EVENT_PKEY_CHANGE, 350219820Sjeff IB_EVENT_SM_CHANGE, 351219820Sjeff IB_EVENT_SRQ_ERR, 352219820Sjeff IB_EVENT_SRQ_LIMIT_REACHED, 353219820Sjeff IB_EVENT_QP_LAST_WQE_REACHED, 354219820Sjeff IB_EVENT_CLIENT_REREGISTER, 355219820Sjeff IB_EVENT_GID_CHANGE, 356219820Sjeff}; 357219820Sjeff 358219820Sjeffenum ib_event_flags { 359219820Sjeff IB_XRC_QP_EVENT_FLAG = 0x80000000, 360219820Sjeff}; 361219820Sjeff 362219820Sjeffstruct ib_event { 363219820Sjeff struct ib_device *device; 364219820Sjeff union { 365219820Sjeff struct ib_cq *cq; 366219820Sjeff struct ib_qp *qp; 367219820Sjeff struct ib_srq *srq; 368219820Sjeff u8 port_num; 369219820Sjeff u32 xrc_qp_num; 370219820Sjeff } element; 371219820Sjeff enum ib_event_type event; 372219820Sjeff}; 373219820Sjeff 374219820Sjeffstruct ib_event_handler { 375219820Sjeff struct ib_device *device; 376219820Sjeff void (*handler)(struct ib_event_handler *, struct ib_event *); 377219820Sjeff struct list_head list; 378219820Sjeff}; 379219820Sjeff 380219820Sjeff#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ 381219820Sjeff do { \ 382219820Sjeff (_ptr)->device = _device; \ 383219820Sjeff (_ptr)->handler = _handler; \ 384219820Sjeff INIT_LIST_HEAD(&(_ptr)->list); \ 385219820Sjeff } while (0) 386219820Sjeff 387219820Sjeffstruct ib_global_route { 388219820Sjeff union ib_gid dgid; 389219820Sjeff u32 flow_label; 390219820Sjeff u8 sgid_index; 391219820Sjeff u8 hop_limit; 392219820Sjeff u8 traffic_class; 393219820Sjeff}; 394219820Sjeff 395219820Sjeffstruct ib_grh { 396219820Sjeff __be32 version_tclass_flow; 397219820Sjeff __be16 paylen; 398219820Sjeff u8 next_hdr; 399219820Sjeff u8 hop_limit; 400219820Sjeff union ib_gid sgid; 401219820Sjeff union ib_gid dgid; 402219820Sjeff}; 403219820Sjeff 404219820Sjeffenum { 405219820Sjeff IB_MULTICAST_QPN = 0xffffff 406219820Sjeff}; 407219820Sjeff 408219820Sjeff#define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) 409219820Sjeff 410219820Sjeffenum ib_ah_flags { 411219820Sjeff IB_AH_GRH = 1 412219820Sjeff}; 413219820Sjeff 414219820Sjeffenum ib_rate { 415219820Sjeff IB_RATE_PORT_CURRENT = 0, 416219820Sjeff IB_RATE_2_5_GBPS = 2, 417219820Sjeff IB_RATE_5_GBPS = 5, 418219820Sjeff IB_RATE_10_GBPS = 3, 419219820Sjeff IB_RATE_20_GBPS = 6, 420219820Sjeff IB_RATE_30_GBPS = 4, 421219820Sjeff IB_RATE_40_GBPS = 7, 422219820Sjeff IB_RATE_60_GBPS = 8, 423219820Sjeff IB_RATE_80_GBPS = 9, 424219820Sjeff IB_RATE_120_GBPS = 10 425219820Sjeff}; 426219820Sjeff 427219820Sjeff/** 428219820Sjeff * ib_rate_to_mult - Convert the IB rate enum to a multiple of the 429219820Sjeff * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be 430219820Sjeff * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. 431219820Sjeff * @rate: rate to convert. 432219820Sjeff */ 433219820Sjeffint ib_rate_to_mult(enum ib_rate rate) __attribute_const__; 434219820Sjeff 435219820Sjeff/** 436219820Sjeff * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate 437219820Sjeff * enum. 438219820Sjeff * @mult: multiple to convert. 439219820Sjeff */ 440219820Sjeffenum ib_rate mult_to_ib_rate(int mult) __attribute_const__; 441219820Sjeff 442219820Sjeffstruct ib_ah_attr { 443219820Sjeff struct ib_global_route grh; 444219820Sjeff u16 dlid; 445219820Sjeff u8 sl; 446219820Sjeff u8 src_path_bits; 447219820Sjeff u8 static_rate; 448219820Sjeff u8 ah_flags; 449219820Sjeff u8 port_num; 450219820Sjeff}; 451219820Sjeff 452219820Sjeffenum ib_wc_status { 453219820Sjeff IB_WC_SUCCESS, 454219820Sjeff IB_WC_LOC_LEN_ERR, 455219820Sjeff IB_WC_LOC_QP_OP_ERR, 456219820Sjeff IB_WC_LOC_EEC_OP_ERR, 457219820Sjeff IB_WC_LOC_PROT_ERR, 458219820Sjeff IB_WC_WR_FLUSH_ERR, 459219820Sjeff IB_WC_MW_BIND_ERR, 460219820Sjeff IB_WC_BAD_RESP_ERR, 461219820Sjeff IB_WC_LOC_ACCESS_ERR, 462219820Sjeff IB_WC_REM_INV_REQ_ERR, 463219820Sjeff IB_WC_REM_ACCESS_ERR, 464219820Sjeff IB_WC_REM_OP_ERR, 465219820Sjeff IB_WC_RETRY_EXC_ERR, 466219820Sjeff IB_WC_RNR_RETRY_EXC_ERR, 467219820Sjeff IB_WC_LOC_RDD_VIOL_ERR, 468219820Sjeff IB_WC_REM_INV_RD_REQ_ERR, 469219820Sjeff IB_WC_REM_ABORT_ERR, 470219820Sjeff IB_WC_INV_EECN_ERR, 471219820Sjeff IB_WC_INV_EEC_STATE_ERR, 472219820Sjeff IB_WC_FATAL_ERR, 473219820Sjeff IB_WC_RESP_TIMEOUT_ERR, 474219820Sjeff IB_WC_GENERAL_ERR 475219820Sjeff}; 476219820Sjeff 477219820Sjeffenum ib_wc_opcode { 478219820Sjeff IB_WC_SEND, 479219820Sjeff IB_WC_RDMA_WRITE, 480219820Sjeff IB_WC_RDMA_READ, 481219820Sjeff IB_WC_COMP_SWAP, 482219820Sjeff IB_WC_FETCH_ADD, 483219820Sjeff IB_WC_BIND_MW, 484219820Sjeff IB_WC_LSO, 485219820Sjeff IB_WC_LOCAL_INV, 486219820Sjeff IB_WC_FAST_REG_MR, 487219820Sjeff IB_WC_MASKED_COMP_SWAP, 488219820Sjeff IB_WC_MASKED_FETCH_ADD, 489219820Sjeff/* 490219820Sjeff * Set value of IB_WC_RECV so consumers can test if a completion is a 491219820Sjeff * receive by testing (opcode & IB_WC_RECV). 492219820Sjeff */ 493219820Sjeff IB_WC_RECV = 1 << 7, 494219820Sjeff IB_WC_RECV_RDMA_WITH_IMM 495219820Sjeff}; 496219820Sjeff 497219820Sjeffenum ib_wc_flags { 498219820Sjeff IB_WC_GRH = 1, 499219820Sjeff IB_WC_WITH_IMM = (1<<1), 500219820Sjeff IB_WC_WITH_INVALIDATE = (1<<2), 501219820Sjeff}; 502219820Sjeff 503219820Sjeffstruct ib_wc { 504219820Sjeff u64 wr_id; 505219820Sjeff enum ib_wc_status status; 506219820Sjeff enum ib_wc_opcode opcode; 507219820Sjeff u32 vendor_err; 508219820Sjeff u32 byte_len; 509219820Sjeff struct ib_qp *qp; 510219820Sjeff union { 511219820Sjeff __be32 imm_data; 512219820Sjeff u32 invalidate_rkey; 513219820Sjeff } ex; 514219820Sjeff u32 src_qp; 515219820Sjeff int wc_flags; 516219820Sjeff u16 pkey_index; 517219820Sjeff u16 slid; 518219820Sjeff u8 sl; 519219820Sjeff u8 dlid_path_bits; 520219820Sjeff u8 port_num; /* valid only for DR SMPs on switches */ 521219820Sjeff int csum_ok; 522219820Sjeff}; 523219820Sjeff 524219820Sjeffenum ib_cq_notify_flags { 525219820Sjeff IB_CQ_SOLICITED = 1 << 0, 526219820Sjeff IB_CQ_NEXT_COMP = 1 << 1, 527219820Sjeff IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, 528219820Sjeff IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, 529219820Sjeff}; 530219820Sjeff 531219820Sjeffenum ib_srq_attr_mask { 532219820Sjeff IB_SRQ_MAX_WR = 1 << 0, 533219820Sjeff IB_SRQ_LIMIT = 1 << 1, 534219820Sjeff}; 535219820Sjeff 536219820Sjeffstruct ib_srq_attr { 537219820Sjeff u32 max_wr; 538219820Sjeff u32 max_sge; 539219820Sjeff u32 srq_limit; 540219820Sjeff}; 541219820Sjeff 542219820Sjeffstruct ib_srq_init_attr { 543219820Sjeff void (*event_handler)(struct ib_event *, void *); 544219820Sjeff void *srq_context; 545219820Sjeff struct ib_srq_attr attr; 546219820Sjeff}; 547219820Sjeff 548219820Sjeffstruct ib_qp_cap { 549219820Sjeff u32 max_send_wr; 550219820Sjeff u32 max_recv_wr; 551219820Sjeff u32 max_send_sge; 552219820Sjeff u32 max_recv_sge; 553219820Sjeff u32 max_inline_data; 554219820Sjeff}; 555219820Sjeff 556219820Sjeffenum ib_sig_type { 557219820Sjeff IB_SIGNAL_ALL_WR, 558219820Sjeff IB_SIGNAL_REQ_WR 559219820Sjeff}; 560219820Sjeff 561219820Sjeffenum ib_qp_type { 562219820Sjeff /* 563219820Sjeff * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries 564219820Sjeff * here (and in that order) since the MAD layer uses them as 565219820Sjeff * indices into a 2-entry table. 566219820Sjeff */ 567219820Sjeff IB_QPT_SMI, 568219820Sjeff IB_QPT_GSI, 569219820Sjeff 570219820Sjeff IB_QPT_RC, 571219820Sjeff IB_QPT_UC, 572219820Sjeff IB_QPT_UD, 573219820Sjeff IB_QPT_XRC, 574219820Sjeff IB_QPT_RAW_IPV6, 575219820Sjeff IB_QPT_RAW_ETY, 576219820Sjeff IB_QPT_RAW_ETH 577219820Sjeff}; 578219820Sjeff 579219820Sjeffenum ib_qp_create_flags { 580219820Sjeff IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, 581219820Sjeff IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, 582219820Sjeff}; 583219820Sjeff 584219820Sjeffstruct ib_qp_init_attr { 585219820Sjeff void (*event_handler)(struct ib_event *, void *); 586219820Sjeff void *qp_context; 587219820Sjeff struct ib_cq *send_cq; 588219820Sjeff struct ib_cq *recv_cq; 589219820Sjeff struct ib_srq *srq; 590219820Sjeff struct ib_qp_cap cap; 591219820Sjeff enum ib_sig_type sq_sig_type; 592219820Sjeff enum ib_qp_type qp_type; 593219820Sjeff enum ib_qp_create_flags create_flags; 594219820Sjeff struct ib_xrcd *xrc_domain; /* XRC qp's only */ 595219820Sjeff u8 port_num; /* special QP types only */ 596219820Sjeff}; 597219820Sjeff 598219820Sjeffenum ib_rnr_timeout { 599219820Sjeff IB_RNR_TIMER_655_36 = 0, 600219820Sjeff IB_RNR_TIMER_000_01 = 1, 601219820Sjeff IB_RNR_TIMER_000_02 = 2, 602219820Sjeff IB_RNR_TIMER_000_03 = 3, 603219820Sjeff IB_RNR_TIMER_000_04 = 4, 604219820Sjeff IB_RNR_TIMER_000_06 = 5, 605219820Sjeff IB_RNR_TIMER_000_08 = 6, 606219820Sjeff IB_RNR_TIMER_000_12 = 7, 607219820Sjeff IB_RNR_TIMER_000_16 = 8, 608219820Sjeff IB_RNR_TIMER_000_24 = 9, 609219820Sjeff IB_RNR_TIMER_000_32 = 10, 610219820Sjeff IB_RNR_TIMER_000_48 = 11, 611219820Sjeff IB_RNR_TIMER_000_64 = 12, 612219820Sjeff IB_RNR_TIMER_000_96 = 13, 613219820Sjeff IB_RNR_TIMER_001_28 = 14, 614219820Sjeff IB_RNR_TIMER_001_92 = 15, 615219820Sjeff IB_RNR_TIMER_002_56 = 16, 616219820Sjeff IB_RNR_TIMER_003_84 = 17, 617219820Sjeff IB_RNR_TIMER_005_12 = 18, 618219820Sjeff IB_RNR_TIMER_007_68 = 19, 619219820Sjeff IB_RNR_TIMER_010_24 = 20, 620219820Sjeff IB_RNR_TIMER_015_36 = 21, 621219820Sjeff IB_RNR_TIMER_020_48 = 22, 622219820Sjeff IB_RNR_TIMER_030_72 = 23, 623219820Sjeff IB_RNR_TIMER_040_96 = 24, 624219820Sjeff IB_RNR_TIMER_061_44 = 25, 625219820Sjeff IB_RNR_TIMER_081_92 = 26, 626219820Sjeff IB_RNR_TIMER_122_88 = 27, 627219820Sjeff IB_RNR_TIMER_163_84 = 28, 628219820Sjeff IB_RNR_TIMER_245_76 = 29, 629219820Sjeff IB_RNR_TIMER_327_68 = 30, 630219820Sjeff IB_RNR_TIMER_491_52 = 31 631219820Sjeff}; 632219820Sjeff 633219820Sjeffenum ib_qp_attr_mask { 634219820Sjeff IB_QP_STATE = 1, 635219820Sjeff IB_QP_CUR_STATE = (1<<1), 636219820Sjeff IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), 637219820Sjeff IB_QP_ACCESS_FLAGS = (1<<3), 638219820Sjeff IB_QP_PKEY_INDEX = (1<<4), 639219820Sjeff IB_QP_PORT = (1<<5), 640219820Sjeff IB_QP_QKEY = (1<<6), 641219820Sjeff IB_QP_AV = (1<<7), 642219820Sjeff IB_QP_PATH_MTU = (1<<8), 643219820Sjeff IB_QP_TIMEOUT = (1<<9), 644219820Sjeff IB_QP_RETRY_CNT = (1<<10), 645219820Sjeff IB_QP_RNR_RETRY = (1<<11), 646219820Sjeff IB_QP_RQ_PSN = (1<<12), 647219820Sjeff IB_QP_MAX_QP_RD_ATOMIC = (1<<13), 648219820Sjeff IB_QP_ALT_PATH = (1<<14), 649219820Sjeff IB_QP_MIN_RNR_TIMER = (1<<15), 650219820Sjeff IB_QP_SQ_PSN = (1<<16), 651219820Sjeff IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), 652219820Sjeff IB_QP_PATH_MIG_STATE = (1<<18), 653219820Sjeff IB_QP_CAP = (1<<19), 654219820Sjeff IB_QP_DEST_QPN = (1<<20) 655219820Sjeff}; 656219820Sjeff 657219820Sjeffenum ib_qp_state { 658219820Sjeff IB_QPS_RESET, 659219820Sjeff IB_QPS_INIT, 660219820Sjeff IB_QPS_RTR, 661219820Sjeff IB_QPS_RTS, 662219820Sjeff IB_QPS_SQD, 663219820Sjeff IB_QPS_SQE, 664219820Sjeff IB_QPS_ERR 665219820Sjeff}; 666219820Sjeff 667219820Sjeffenum ib_mig_state { 668219820Sjeff IB_MIG_MIGRATED, 669219820Sjeff IB_MIG_REARM, 670219820Sjeff IB_MIG_ARMED 671219820Sjeff}; 672219820Sjeff 673219820Sjeffstruct ib_qp_attr { 674219820Sjeff enum ib_qp_state qp_state; 675219820Sjeff enum ib_qp_state cur_qp_state; 676219820Sjeff enum ib_mtu path_mtu; 677219820Sjeff enum ib_mig_state path_mig_state; 678219820Sjeff u32 qkey; 679219820Sjeff u32 rq_psn; 680219820Sjeff u32 sq_psn; 681219820Sjeff u32 dest_qp_num; 682219820Sjeff int qp_access_flags; 683219820Sjeff struct ib_qp_cap cap; 684219820Sjeff struct ib_ah_attr ah_attr; 685219820Sjeff struct ib_ah_attr alt_ah_attr; 686219820Sjeff u16 pkey_index; 687219820Sjeff u16 alt_pkey_index; 688219820Sjeff u8 en_sqd_async_notify; 689219820Sjeff u8 sq_draining; 690219820Sjeff u8 max_rd_atomic; 691219820Sjeff u8 max_dest_rd_atomic; 692219820Sjeff u8 min_rnr_timer; 693219820Sjeff u8 port_num; 694219820Sjeff u8 timeout; 695219820Sjeff u8 retry_cnt; 696219820Sjeff u8 rnr_retry; 697219820Sjeff u8 alt_port_num; 698219820Sjeff u8 alt_timeout; 699219820Sjeff}; 700219820Sjeff 701219820Sjeffenum ib_wr_opcode { 702219820Sjeff IB_WR_RDMA_WRITE, 703219820Sjeff IB_WR_RDMA_WRITE_WITH_IMM, 704219820Sjeff IB_WR_SEND, 705219820Sjeff IB_WR_SEND_WITH_IMM, 706219820Sjeff IB_WR_RDMA_READ, 707219820Sjeff IB_WR_ATOMIC_CMP_AND_SWP, 708219820Sjeff IB_WR_ATOMIC_FETCH_AND_ADD, 709219820Sjeff IB_WR_LSO, 710219820Sjeff IB_WR_BIG_LSO, 711219820Sjeff IB_WR_SEND_WITH_INV, 712219820Sjeff IB_WR_RDMA_READ_WITH_INV, 713219820Sjeff IB_WR_LOCAL_INV, 714219820Sjeff IB_WR_FAST_REG_MR, 715219820Sjeff IB_WR_MASKED_ATOMIC_CMP_AND_SWP, 716219820Sjeff IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, 717219820Sjeff}; 718219820Sjeff 719219820Sjeffenum ib_send_flags { 720219820Sjeff IB_SEND_FENCE = 1, 721219820Sjeff IB_SEND_SIGNALED = (1<<1), 722219820Sjeff IB_SEND_SOLICITED = (1<<2), 723219820Sjeff IB_SEND_INLINE = (1<<3), 724219820Sjeff IB_SEND_IP_CSUM = (1<<4) 725219820Sjeff}; 726219820Sjeff 727219820Sjeffstruct ib_sge { 728219820Sjeff u64 addr; 729219820Sjeff u32 length; 730219820Sjeff u32 lkey; 731219820Sjeff}; 732219820Sjeff 733219820Sjeffstruct ib_fast_reg_page_list { 734219820Sjeff struct ib_device *device; 735219820Sjeff u64 *page_list; 736219820Sjeff unsigned int max_page_list_len; 737219820Sjeff}; 738219820Sjeff 739219820Sjeffstruct ib_send_wr { 740219820Sjeff struct ib_send_wr *next; 741219820Sjeff u64 wr_id; 742219820Sjeff struct ib_sge *sg_list; 743219820Sjeff int num_sge; 744219820Sjeff enum ib_wr_opcode opcode; 745219820Sjeff int send_flags; 746219820Sjeff union { 747219820Sjeff __be32 imm_data; 748219820Sjeff u32 invalidate_rkey; 749219820Sjeff } ex; 750219820Sjeff union { 751219820Sjeff struct { 752219820Sjeff u64 remote_addr; 753219820Sjeff u32 rkey; 754219820Sjeff } rdma; 755219820Sjeff struct { 756219820Sjeff u64 remote_addr; 757219820Sjeff u64 compare_add; 758219820Sjeff u64 swap; 759219820Sjeff u64 compare_add_mask; 760219820Sjeff u64 swap_mask; 761219820Sjeff u32 rkey; 762219820Sjeff } atomic; 763219820Sjeff struct { 764219820Sjeff struct ib_ah *ah; 765219820Sjeff void *header; 766219820Sjeff int hlen; 767219820Sjeff int mss; 768219820Sjeff u32 remote_qpn; 769219820Sjeff u32 remote_qkey; 770219820Sjeff u16 pkey_index; /* valid for GSI only */ 771219820Sjeff u8 port_num; /* valid for DR SMPs on switch only */ 772219820Sjeff } ud; 773219820Sjeff struct { 774219820Sjeff u64 iova_start; 775219820Sjeff struct ib_fast_reg_page_list *page_list; 776219820Sjeff unsigned int page_shift; 777219820Sjeff unsigned int page_list_len; 778219820Sjeff u32 length; 779219820Sjeff int access_flags; 780219820Sjeff u32 rkey; 781219820Sjeff } fast_reg; 782219820Sjeff struct { 783219820Sjeff struct ib_unpacked_lrh *lrh; 784219820Sjeff u32 eth_type; 785219820Sjeff u8 static_rate; 786219820Sjeff } raw_ety; 787219820Sjeff } wr; 788219820Sjeff u32 xrc_remote_srq_num; /* valid for XRC sends only */ 789219820Sjeff}; 790219820Sjeff 791219820Sjeffstruct ib_recv_wr { 792219820Sjeff struct ib_recv_wr *next; 793219820Sjeff u64 wr_id; 794219820Sjeff struct ib_sge *sg_list; 795219820Sjeff int num_sge; 796219820Sjeff}; 797219820Sjeff 798219820Sjeffenum ib_access_flags { 799219820Sjeff IB_ACCESS_LOCAL_WRITE = 1, 800219820Sjeff IB_ACCESS_REMOTE_WRITE = (1<<1), 801219820Sjeff IB_ACCESS_REMOTE_READ = (1<<2), 802219820Sjeff IB_ACCESS_REMOTE_ATOMIC = (1<<3), 803219820Sjeff IB_ACCESS_MW_BIND = (1<<4) 804219820Sjeff}; 805219820Sjeff 806219820Sjeffstruct ib_phys_buf { 807219820Sjeff u64 addr; 808219820Sjeff u64 size; 809219820Sjeff}; 810219820Sjeff 811219820Sjeffstruct ib_mr_attr { 812219820Sjeff struct ib_pd *pd; 813219820Sjeff u64 device_virt_addr; 814219820Sjeff u64 size; 815219820Sjeff int mr_access_flags; 816219820Sjeff u32 lkey; 817219820Sjeff u32 rkey; 818219820Sjeff}; 819219820Sjeff 820219820Sjeffenum ib_mr_rereg_flags { 821219820Sjeff IB_MR_REREG_TRANS = 1, 822219820Sjeff IB_MR_REREG_PD = (1<<1), 823219820Sjeff IB_MR_REREG_ACCESS = (1<<2) 824219820Sjeff}; 825219820Sjeff 826219820Sjeffstruct ib_mw_bind { 827219820Sjeff struct ib_mr *mr; 828219820Sjeff u64 wr_id; 829219820Sjeff u64 addr; 830219820Sjeff u32 length; 831219820Sjeff int send_flags; 832219820Sjeff int mw_access_flags; 833219820Sjeff}; 834219820Sjeff 835219820Sjeffstruct ib_fmr_attr { 836219820Sjeff int max_pages; 837219820Sjeff int max_maps; 838219820Sjeff u8 page_shift; 839219820Sjeff}; 840219820Sjeff 841219820Sjeffstruct ib_ucontext { 842219820Sjeff struct ib_device *device; 843219820Sjeff struct list_head pd_list; 844219820Sjeff struct list_head mr_list; 845219820Sjeff struct list_head mw_list; 846219820Sjeff struct list_head cq_list; 847219820Sjeff struct list_head qp_list; 848219820Sjeff struct list_head srq_list; 849219820Sjeff struct list_head ah_list; 850219820Sjeff struct list_head xrc_domain_list; 851219820Sjeff int closing; 852219820Sjeff}; 853219820Sjeff 854219820Sjeffstruct ib_uobject { 855219820Sjeff u64 user_handle; /* handle given to us by userspace */ 856219820Sjeff struct ib_ucontext *context; /* associated user context */ 857219820Sjeff void *object; /* containing object */ 858219820Sjeff struct list_head list; /* link to context's list */ 859219820Sjeff int id; /* index into kernel idr */ 860219820Sjeff struct kref ref; 861219820Sjeff struct rw_semaphore mutex; /* protects .live */ 862219820Sjeff int live; 863219820Sjeff}; 864219820Sjeff 865219820Sjeffstruct ib_udata { 866219820Sjeff void __user *inbuf; 867219820Sjeff void __user *outbuf; 868219820Sjeff size_t inlen; 869219820Sjeff size_t outlen; 870219820Sjeff}; 871219820Sjeff 872219820Sjeffstruct ib_uxrc_rcv_object { 873219820Sjeff struct list_head list; /* link to context's list */ 874219820Sjeff u32 qp_num; 875219820Sjeff u32 domain_handle; 876219820Sjeff}; 877219820Sjeff 878219820Sjeffstruct ib_pd { 879219820Sjeff struct ib_device *device; 880219820Sjeff struct ib_uobject *uobject; 881219820Sjeff atomic_t usecnt; /* count all resources */ 882219820Sjeff}; 883219820Sjeff 884219820Sjeffstruct ib_xrcd { 885219820Sjeff struct ib_device *device; 886219820Sjeff struct ib_uobject *uobject; 887219820Sjeff struct inode *inode; 888219820Sjeff struct rb_node node; 889219820Sjeff atomic_t usecnt; /* count all resources */ 890219820Sjeff}; 891219820Sjeff 892219820Sjeff 893219820Sjeffstruct ib_ah { 894219820Sjeff struct ib_device *device; 895219820Sjeff struct ib_pd *pd; 896219820Sjeff struct ib_uobject *uobject; 897219820Sjeff}; 898219820Sjeff 899219820Sjefftypedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); 900219820Sjeff 901219820Sjeffstruct ib_cq { 902219820Sjeff struct ib_device *device; 903219820Sjeff struct ib_uobject *uobject; 904219820Sjeff ib_comp_handler comp_handler; 905219820Sjeff void (*event_handler)(struct ib_event *, void *); 906219820Sjeff void *cq_context; 907219820Sjeff int cqe; 908219820Sjeff atomic_t usecnt; /* count number of work queues */ 909219820Sjeff}; 910219820Sjeff 911219820Sjeffstruct ib_srq { 912219820Sjeff struct ib_device *device; 913219820Sjeff struct ib_pd *pd; 914219820Sjeff struct ib_cq *xrc_cq; 915219820Sjeff struct ib_xrcd *xrcd; 916219820Sjeff struct ib_uobject *uobject; 917219820Sjeff void (*event_handler)(struct ib_event *, void *); 918219820Sjeff void *srq_context; 919219820Sjeff atomic_t usecnt; 920219820Sjeff u32 xrc_srq_num; 921219820Sjeff}; 922219820Sjeff 923219820Sjeffstruct ib_qp { 924219820Sjeff struct ib_device *device; 925219820Sjeff struct ib_pd *pd; 926219820Sjeff struct ib_cq *send_cq; 927219820Sjeff struct ib_cq *recv_cq; 928219820Sjeff struct ib_srq *srq; 929219820Sjeff struct ib_uobject *uobject; 930219820Sjeff void (*event_handler)(struct ib_event *, void *); 931219820Sjeff void *qp_context; 932219820Sjeff u32 qp_num; 933219820Sjeff enum ib_qp_type qp_type; 934219820Sjeff struct ib_xrcd *xrcd; /* XRC QPs only */ 935219820Sjeff}; 936219820Sjeff 937219820Sjeffstruct ib_mr { 938219820Sjeff struct ib_device *device; 939219820Sjeff struct ib_pd *pd; 940219820Sjeff struct ib_uobject *uobject; 941219820Sjeff u32 lkey; 942219820Sjeff u32 rkey; 943219820Sjeff atomic_t usecnt; /* count number of MWs */ 944219820Sjeff}; 945219820Sjeff 946219820Sjeffstruct ib_mw { 947219820Sjeff struct ib_device *device; 948219820Sjeff struct ib_pd *pd; 949219820Sjeff struct ib_uobject *uobject; 950219820Sjeff u32 rkey; 951219820Sjeff}; 952219820Sjeff 953219820Sjeffstruct ib_fmr { 954219820Sjeff struct ib_device *device; 955219820Sjeff struct ib_pd *pd; 956219820Sjeff struct list_head list; 957219820Sjeff u32 lkey; 958219820Sjeff u32 rkey; 959219820Sjeff}; 960219820Sjeff 961219820Sjeffstruct ib_mad; 962219820Sjeffstruct ib_grh; 963219820Sjeff 964219820Sjeffenum ib_process_mad_flags { 965219820Sjeff IB_MAD_IGNORE_MKEY = 1, 966219820Sjeff IB_MAD_IGNORE_BKEY = 2, 967219820Sjeff IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY 968219820Sjeff}; 969219820Sjeff 970219820Sjeffenum ib_mad_result { 971219820Sjeff IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ 972219820Sjeff IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ 973219820Sjeff IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ 974219820Sjeff IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ 975219820Sjeff}; 976219820Sjeff 977219820Sjeff#define IB_DEVICE_NAME_MAX 64 978219820Sjeff 979219820Sjeffstruct ib_cache { 980219820Sjeff rwlock_t lock; 981219820Sjeff struct ib_event_handler event_handler; 982219820Sjeff struct ib_pkey_cache **pkey_cache; 983219820Sjeff struct ib_gid_cache **gid_cache; 984219820Sjeff u8 *lmc_cache; 985219820Sjeff}; 986219820Sjeff 987219820Sjeffstruct ib_dma_mapping_ops { 988219820Sjeff int (*mapping_error)(struct ib_device *dev, 989219820Sjeff u64 dma_addr); 990219820Sjeff u64 (*map_single)(struct ib_device *dev, 991219820Sjeff void *ptr, size_t size, 992219820Sjeff enum dma_data_direction direction); 993219820Sjeff void (*unmap_single)(struct ib_device *dev, 994219820Sjeff u64 addr, size_t size, 995219820Sjeff enum dma_data_direction direction); 996219820Sjeff u64 (*map_page)(struct ib_device *dev, 997219820Sjeff struct page *page, unsigned long offset, 998219820Sjeff size_t size, 999219820Sjeff enum dma_data_direction direction); 1000219820Sjeff void (*unmap_page)(struct ib_device *dev, 1001219820Sjeff u64 addr, size_t size, 1002219820Sjeff enum dma_data_direction direction); 1003219820Sjeff int (*map_sg)(struct ib_device *dev, 1004219820Sjeff struct scatterlist *sg, int nents, 1005219820Sjeff enum dma_data_direction direction); 1006219820Sjeff void (*unmap_sg)(struct ib_device *dev, 1007219820Sjeff struct scatterlist *sg, int nents, 1008219820Sjeff enum dma_data_direction direction); 1009219820Sjeff u64 (*dma_address)(struct ib_device *dev, 1010219820Sjeff struct scatterlist *sg); 1011219820Sjeff unsigned int (*dma_len)(struct ib_device *dev, 1012219820Sjeff struct scatterlist *sg); 1013219820Sjeff void (*sync_single_for_cpu)(struct ib_device *dev, 1014219820Sjeff u64 dma_handle, 1015219820Sjeff size_t size, 1016219820Sjeff enum dma_data_direction dir); 1017219820Sjeff void (*sync_single_for_device)(struct ib_device *dev, 1018219820Sjeff u64 dma_handle, 1019219820Sjeff size_t size, 1020219820Sjeff enum dma_data_direction dir); 1021219820Sjeff void *(*alloc_coherent)(struct ib_device *dev, 1022219820Sjeff size_t size, 1023219820Sjeff u64 *dma_handle, 1024219820Sjeff gfp_t flag); 1025219820Sjeff void (*free_coherent)(struct ib_device *dev, 1026219820Sjeff size_t size, void *cpu_addr, 1027219820Sjeff u64 dma_handle); 1028219820Sjeff}; 1029219820Sjeff 1030219820Sjeffstruct iw_cm_verbs; 1031219820Sjeff 1032219820Sjeffstruct ib_device { 1033219820Sjeff struct device *dma_device; 1034219820Sjeff 1035219820Sjeff char name[IB_DEVICE_NAME_MAX]; 1036219820Sjeff 1037219820Sjeff struct list_head event_handler_list; 1038219820Sjeff spinlock_t event_handler_lock; 1039219820Sjeff 1040219820Sjeff struct list_head core_list; 1041219820Sjeff struct list_head client_data_list; 1042219820Sjeff spinlock_t client_data_lock; 1043219820Sjeff 1044219820Sjeff struct ib_cache cache; 1045219820Sjeff int *pkey_tbl_len; 1046219820Sjeff int *gid_tbl_len; 1047219820Sjeff 1048219820Sjeff int num_comp_vectors; 1049219820Sjeff 1050219820Sjeff struct iw_cm_verbs *iwcm; 1051219820Sjeff 1052219820Sjeff int (*get_protocol_stats)(struct ib_device *device, 1053219820Sjeff union rdma_protocol_stats *stats); 1054219820Sjeff int (*query_device)(struct ib_device *device, 1055219820Sjeff struct ib_device_attr *device_attr); 1056219820Sjeff int (*query_port)(struct ib_device *device, 1057219820Sjeff u8 port_num, 1058219820Sjeff struct ib_port_attr *port_attr); 1059219820Sjeff enum rdma_link_layer (*get_link_layer)(struct ib_device *device, 1060219820Sjeff u8 port_num); 1061219820Sjeff int (*query_gid)(struct ib_device *device, 1062219820Sjeff u8 port_num, int index, 1063219820Sjeff union ib_gid *gid); 1064219820Sjeff int (*query_pkey)(struct ib_device *device, 1065219820Sjeff u8 port_num, u16 index, u16 *pkey); 1066219820Sjeff int (*modify_device)(struct ib_device *device, 1067219820Sjeff int device_modify_mask, 1068219820Sjeff struct ib_device_modify *device_modify); 1069219820Sjeff int (*modify_port)(struct ib_device *device, 1070219820Sjeff u8 port_num, int port_modify_mask, 1071219820Sjeff struct ib_port_modify *port_modify); 1072219820Sjeff struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, 1073219820Sjeff struct ib_udata *udata); 1074219820Sjeff int (*dealloc_ucontext)(struct ib_ucontext *context); 1075219820Sjeff int (*mmap)(struct ib_ucontext *context, 1076219820Sjeff struct vm_area_struct *vma); 1077219820Sjeff struct ib_pd * (*alloc_pd)(struct ib_device *device, 1078219820Sjeff struct ib_ucontext *context, 1079219820Sjeff struct ib_udata *udata); 1080219820Sjeff int (*dealloc_pd)(struct ib_pd *pd); 1081219820Sjeff struct ib_ah * (*create_ah)(struct ib_pd *pd, 1082219820Sjeff struct ib_ah_attr *ah_attr); 1083219820Sjeff int (*modify_ah)(struct ib_ah *ah, 1084219820Sjeff struct ib_ah_attr *ah_attr); 1085219820Sjeff int (*query_ah)(struct ib_ah *ah, 1086219820Sjeff struct ib_ah_attr *ah_attr); 1087219820Sjeff int (*destroy_ah)(struct ib_ah *ah); 1088219820Sjeff struct ib_srq * (*create_srq)(struct ib_pd *pd, 1089219820Sjeff struct ib_srq_init_attr *srq_init_attr, 1090219820Sjeff struct ib_udata *udata); 1091219820Sjeff int (*modify_srq)(struct ib_srq *srq, 1092219820Sjeff struct ib_srq_attr *srq_attr, 1093219820Sjeff enum ib_srq_attr_mask srq_attr_mask, 1094219820Sjeff struct ib_udata *udata); 1095219820Sjeff int (*query_srq)(struct ib_srq *srq, 1096219820Sjeff struct ib_srq_attr *srq_attr); 1097219820Sjeff int (*destroy_srq)(struct ib_srq *srq); 1098219820Sjeff int (*post_srq_recv)(struct ib_srq *srq, 1099219820Sjeff struct ib_recv_wr *recv_wr, 1100219820Sjeff struct ib_recv_wr **bad_recv_wr); 1101219820Sjeff struct ib_qp * (*create_qp)(struct ib_pd *pd, 1102219820Sjeff struct ib_qp_init_attr *qp_init_attr, 1103219820Sjeff struct ib_udata *udata); 1104219820Sjeff int (*modify_qp)(struct ib_qp *qp, 1105219820Sjeff struct ib_qp_attr *qp_attr, 1106219820Sjeff int qp_attr_mask, 1107219820Sjeff struct ib_udata *udata); 1108219820Sjeff int (*query_qp)(struct ib_qp *qp, 1109219820Sjeff struct ib_qp_attr *qp_attr, 1110219820Sjeff int qp_attr_mask, 1111219820Sjeff struct ib_qp_init_attr *qp_init_attr); 1112219820Sjeff int (*destroy_qp)(struct ib_qp *qp); 1113219820Sjeff int (*post_send)(struct ib_qp *qp, 1114219820Sjeff struct ib_send_wr *send_wr, 1115219820Sjeff struct ib_send_wr **bad_send_wr); 1116219820Sjeff int (*post_recv)(struct ib_qp *qp, 1117219820Sjeff struct ib_recv_wr *recv_wr, 1118219820Sjeff struct ib_recv_wr **bad_recv_wr); 1119219820Sjeff struct ib_cq * (*create_cq)(struct ib_device *device, int cqe, 1120219820Sjeff int comp_vector, 1121219820Sjeff struct ib_ucontext *context, 1122219820Sjeff struct ib_udata *udata); 1123219820Sjeff int (*modify_cq)(struct ib_cq *cq, u16 cq_count, 1124219820Sjeff u16 cq_period); 1125219820Sjeff int (*destroy_cq)(struct ib_cq *cq); 1126219820Sjeff int (*resize_cq)(struct ib_cq *cq, int cqe, 1127219820Sjeff struct ib_udata *udata); 1128219820Sjeff int (*poll_cq)(struct ib_cq *cq, int num_entries, 1129219820Sjeff struct ib_wc *wc); 1130219820Sjeff int (*peek_cq)(struct ib_cq *cq, int wc_cnt); 1131219820Sjeff int (*req_notify_cq)(struct ib_cq *cq, 1132219820Sjeff enum ib_cq_notify_flags flags); 1133219820Sjeff int (*req_ncomp_notif)(struct ib_cq *cq, 1134219820Sjeff int wc_cnt); 1135219820Sjeff struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, 1136219820Sjeff int mr_access_flags); 1137219820Sjeff struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd, 1138219820Sjeff struct ib_phys_buf *phys_buf_array, 1139219820Sjeff int num_phys_buf, 1140219820Sjeff int mr_access_flags, 1141219820Sjeff u64 *iova_start); 1142219820Sjeff struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, 1143219820Sjeff u64 start, u64 length, 1144219820Sjeff u64 virt_addr, 1145219820Sjeff int mr_access_flags, 1146219820Sjeff struct ib_udata *udata); 1147219820Sjeff int (*query_mr)(struct ib_mr *mr, 1148219820Sjeff struct ib_mr_attr *mr_attr); 1149219820Sjeff int (*dereg_mr)(struct ib_mr *mr); 1150219820Sjeff struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd, 1151219820Sjeff int max_page_list_len); 1152219820Sjeff struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device, 1153219820Sjeff int page_list_len); 1154219820Sjeff void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list); 1155219820Sjeff int (*rereg_phys_mr)(struct ib_mr *mr, 1156219820Sjeff int mr_rereg_mask, 1157219820Sjeff struct ib_pd *pd, 1158219820Sjeff struct ib_phys_buf *phys_buf_array, 1159219820Sjeff int num_phys_buf, 1160219820Sjeff int mr_access_flags, 1161219820Sjeff u64 *iova_start); 1162219820Sjeff struct ib_mw * (*alloc_mw)(struct ib_pd *pd); 1163219820Sjeff int (*bind_mw)(struct ib_qp *qp, 1164219820Sjeff struct ib_mw *mw, 1165219820Sjeff struct ib_mw_bind *mw_bind); 1166219820Sjeff int (*dealloc_mw)(struct ib_mw *mw); 1167219820Sjeff struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, 1168219820Sjeff int mr_access_flags, 1169219820Sjeff struct ib_fmr_attr *fmr_attr); 1170219820Sjeff int (*map_phys_fmr)(struct ib_fmr *fmr, 1171219820Sjeff u64 *page_list, int list_len, 1172219820Sjeff u64 iova); 1173219820Sjeff int (*unmap_fmr)(struct list_head *fmr_list); 1174219820Sjeff int (*dealloc_fmr)(struct ib_fmr *fmr); 1175219820Sjeff int (*attach_mcast)(struct ib_qp *qp, 1176219820Sjeff union ib_gid *gid, 1177219820Sjeff u16 lid); 1178219820Sjeff int (*detach_mcast)(struct ib_qp *qp, 1179219820Sjeff union ib_gid *gid, 1180219820Sjeff u16 lid); 1181219820Sjeff int (*process_mad)(struct ib_device *device, 1182219820Sjeff int process_mad_flags, 1183219820Sjeff u8 port_num, 1184219820Sjeff struct ib_wc *in_wc, 1185219820Sjeff struct ib_grh *in_grh, 1186219820Sjeff struct ib_mad *in_mad, 1187219820Sjeff struct ib_mad *out_mad); 1188219820Sjeff struct ib_srq * (*create_xrc_srq)(struct ib_pd *pd, 1189219820Sjeff struct ib_cq *xrc_cq, 1190219820Sjeff struct ib_xrcd *xrcd, 1191219820Sjeff struct ib_srq_init_attr *srq_init_attr, 1192219820Sjeff struct ib_udata *udata); 1193219820Sjeff struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, 1194219820Sjeff struct ib_ucontext *context, 1195219820Sjeff struct ib_udata *udata); 1196219820Sjeff int (*dealloc_xrcd)(struct ib_xrcd *xrcd); 1197219820Sjeff int (*create_xrc_rcv_qp)(struct ib_qp_init_attr *init_attr, 1198219820Sjeff u32 *qp_num); 1199219820Sjeff int (*modify_xrc_rcv_qp)(struct ib_xrcd *xrcd, 1200219820Sjeff u32 qp_num, 1201219820Sjeff struct ib_qp_attr *attr, 1202219820Sjeff int attr_mask); 1203219820Sjeff int (*query_xrc_rcv_qp)(struct ib_xrcd *xrcd, 1204219820Sjeff u32 qp_num, 1205219820Sjeff struct ib_qp_attr *attr, 1206219820Sjeff int attr_mask, 1207219820Sjeff struct ib_qp_init_attr *init_attr); 1208219820Sjeff int (*reg_xrc_rcv_qp)(struct ib_xrcd *xrcd, 1209219820Sjeff void *context, 1210219820Sjeff u32 qp_num); 1211219820Sjeff int (*unreg_xrc_rcv_qp)(struct ib_xrcd *xrcd, 1212219820Sjeff void *context, 1213219820Sjeff u32 qp_num); 1214219820Sjeff 1215219820Sjeff struct ib_dma_mapping_ops *dma_ops; 1216219820Sjeff 1217219820Sjeff struct module *owner; 1218219820Sjeff struct device dev; 1219219820Sjeff struct kobject *ports_parent; 1220219820Sjeff struct list_head port_list; 1221219820Sjeff 1222219820Sjeff enum { 1223219820Sjeff IB_DEV_UNINITIALIZED, 1224219820Sjeff IB_DEV_REGISTERED, 1225219820Sjeff IB_DEV_UNREGISTERED 1226219820Sjeff } reg_state; 1227219820Sjeff 1228219820Sjeff u64 uverbs_cmd_mask; 1229219820Sjeff int uverbs_abi_ver; 1230219820Sjeff 1231219820Sjeff char node_desc[64]; 1232219820Sjeff __be64 node_guid; 1233219820Sjeff u32 local_dma_lkey; 1234219820Sjeff u8 node_type; 1235219820Sjeff u8 phys_port_cnt; 1236219820Sjeff struct rb_root ib_uverbs_xrcd_table; 1237219820Sjeff struct mutex xrcd_table_mutex; 1238219820Sjeff}; 1239219820Sjeff 1240219820Sjeffstruct ib_client { 1241219820Sjeff char *name; 1242219820Sjeff void (*add) (struct ib_device *); 1243219820Sjeff void (*remove)(struct ib_device *); 1244219820Sjeff 1245219820Sjeff struct list_head list; 1246219820Sjeff}; 1247219820Sjeff 1248219820Sjeffstruct ib_device *ib_alloc_device(size_t size); 1249219820Sjeffvoid ib_dealloc_device(struct ib_device *device); 1250219820Sjeff 1251219820Sjeffint ib_register_device (struct ib_device *device); 1252219820Sjeffvoid ib_unregister_device(struct ib_device *device); 1253219820Sjeff 1254219820Sjeffint ib_register_client (struct ib_client *client); 1255219820Sjeffvoid ib_unregister_client(struct ib_client *client); 1256219820Sjeff 1257219820Sjeffvoid *ib_get_client_data(struct ib_device *device, struct ib_client *client); 1258219820Sjeffvoid ib_set_client_data(struct ib_device *device, struct ib_client *client, 1259219820Sjeff void *data); 1260219820Sjeff 1261219820Sjeffstatic inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) 1262219820Sjeff{ 1263219820Sjeff return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; 1264219820Sjeff} 1265219820Sjeff 1266219820Sjeffstatic inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) 1267219820Sjeff{ 1268219820Sjeff return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; 1269219820Sjeff} 1270219820Sjeff 1271219820Sjeff/** 1272219820Sjeff * ib_sysfs_create_port_files - iterate over port sysfs directories 1273219820Sjeff * @device: the IB device 1274219820Sjeff * @create: a function to create sysfs files in each port directory 1275219820Sjeff */ 1276219820Sjeffint ib_sysfs_create_port_files(struct ib_device *device, 1277219820Sjeff int (*create)(struct ib_device *dev, u8 port_num, 1278219820Sjeff struct kobject *kobj)); 1279219820Sjeff 1280219820Sjeff/** 1281219820Sjeff * ib_modify_qp_is_ok - Check that the supplied attribute mask 1282219820Sjeff * contains all required attributes and no attributes not allowed for 1283219820Sjeff * the given QP state transition. 1284219820Sjeff * @cur_state: Current QP state 1285219820Sjeff * @next_state: Next QP state 1286219820Sjeff * @type: QP type 1287219820Sjeff * @mask: Mask of supplied QP attributes 1288219820Sjeff * 1289219820Sjeff * This function is a helper function that a low-level driver's 1290219820Sjeff * modify_qp method can use to validate the consumer's input. It 1291219820Sjeff * checks that cur_state and next_state are valid QP states, that a 1292219820Sjeff * transition from cur_state to next_state is allowed by the IB spec, 1293219820Sjeff * and that the attribute mask supplied is allowed for the transition. 1294219820Sjeff */ 1295219820Sjeffint ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, 1296219820Sjeff enum ib_qp_type type, enum ib_qp_attr_mask mask); 1297219820Sjeff 1298219820Sjeffint ib_register_event_handler (struct ib_event_handler *event_handler); 1299219820Sjeffint ib_unregister_event_handler(struct ib_event_handler *event_handler); 1300219820Sjeffvoid ib_dispatch_event(struct ib_event *event); 1301219820Sjeff 1302219820Sjeffint ib_query_device(struct ib_device *device, 1303219820Sjeff struct ib_device_attr *device_attr); 1304219820Sjeff 1305219820Sjeffint ib_query_port(struct ib_device *device, 1306219820Sjeff u8 port_num, struct ib_port_attr *port_attr); 1307219820Sjeff 1308219820Sjeffenum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, 1309219820Sjeff u8 port_num); 1310219820Sjeff 1311219820Sjeffint ib_query_gid(struct ib_device *device, 1312219820Sjeff u8 port_num, int index, union ib_gid *gid); 1313219820Sjeff 1314219820Sjeffint ib_query_pkey(struct ib_device *device, 1315219820Sjeff u8 port_num, u16 index, u16 *pkey); 1316219820Sjeff 1317219820Sjeffint ib_modify_device(struct ib_device *device, 1318219820Sjeff int device_modify_mask, 1319219820Sjeff struct ib_device_modify *device_modify); 1320219820Sjeff 1321219820Sjeffint ib_modify_port(struct ib_device *device, 1322219820Sjeff u8 port_num, int port_modify_mask, 1323219820Sjeff struct ib_port_modify *port_modify); 1324219820Sjeff 1325219820Sjeffint ib_find_gid(struct ib_device *device, union ib_gid *gid, 1326219820Sjeff u8 *port_num, u16 *index); 1327219820Sjeff 1328219820Sjeffint ib_find_pkey(struct ib_device *device, 1329219820Sjeff u8 port_num, u16 pkey, u16 *index); 1330219820Sjeff 1331219820Sjeff/** 1332219820Sjeff * ib_alloc_pd - Allocates an unused protection domain. 1333219820Sjeff * @device: The device on which to allocate the protection domain. 1334219820Sjeff * 1335219820Sjeff * A protection domain object provides an association between QPs, shared 1336219820Sjeff * receive queues, address handles, memory regions, and memory windows. 1337219820Sjeff */ 1338219820Sjeffstruct ib_pd *ib_alloc_pd(struct ib_device *device); 1339219820Sjeff 1340219820Sjeff/** 1341219820Sjeff * ib_dealloc_pd - Deallocates a protection domain. 1342219820Sjeff * @pd: The protection domain to deallocate. 1343219820Sjeff */ 1344219820Sjeffint ib_dealloc_pd(struct ib_pd *pd); 1345219820Sjeff 1346219820Sjeff/** 1347219820Sjeff * ib_create_ah - Creates an address handle for the given address vector. 1348219820Sjeff * @pd: The protection domain associated with the address handle. 1349219820Sjeff * @ah_attr: The attributes of the address vector. 1350219820Sjeff * 1351219820Sjeff * The address handle is used to reference a local or global destination 1352219820Sjeff * in all UD QP post sends. 1353219820Sjeff */ 1354219820Sjeffstruct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); 1355219820Sjeff 1356219820Sjeff/** 1357219820Sjeff * ib_init_ah_from_wc - Initializes address handle attributes from a 1358219820Sjeff * work completion. 1359219820Sjeff * @device: Device on which the received message arrived. 1360219820Sjeff * @port_num: Port on which the received message arrived. 1361219820Sjeff * @wc: Work completion associated with the received message. 1362219820Sjeff * @grh: References the received global route header. This parameter is 1363219820Sjeff * ignored unless the work completion indicates that the GRH is valid. 1364219820Sjeff * @ah_attr: Returned attributes that can be used when creating an address 1365219820Sjeff * handle for replying to the message. 1366219820Sjeff */ 1367219820Sjeffint ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, 1368219820Sjeff struct ib_grh *grh, struct ib_ah_attr *ah_attr); 1369219820Sjeff 1370219820Sjeff/** 1371219820Sjeff * ib_create_ah_from_wc - Creates an address handle associated with the 1372219820Sjeff * sender of the specified work completion. 1373219820Sjeff * @pd: The protection domain associated with the address handle. 1374219820Sjeff * @wc: Work completion information associated with a received message. 1375219820Sjeff * @grh: References the received global route header. This parameter is 1376219820Sjeff * ignored unless the work completion indicates that the GRH is valid. 1377219820Sjeff * @port_num: The outbound port number to associate with the address. 1378219820Sjeff * 1379219820Sjeff * The address handle is used to reference a local or global destination 1380219820Sjeff * in all UD QP post sends. 1381219820Sjeff */ 1382219820Sjeffstruct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, 1383219820Sjeff struct ib_grh *grh, u8 port_num); 1384219820Sjeff 1385219820Sjeff/** 1386219820Sjeff * ib_modify_ah - Modifies the address vector associated with an address 1387219820Sjeff * handle. 1388219820Sjeff * @ah: The address handle to modify. 1389219820Sjeff * @ah_attr: The new address vector attributes to associate with the 1390219820Sjeff * address handle. 1391219820Sjeff */ 1392219820Sjeffint ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); 1393219820Sjeff 1394219820Sjeff/** 1395219820Sjeff * ib_query_ah - Queries the address vector associated with an address 1396219820Sjeff * handle. 1397219820Sjeff * @ah: The address handle to query. 1398219820Sjeff * @ah_attr: The address vector attributes associated with the address 1399219820Sjeff * handle. 1400219820Sjeff */ 1401219820Sjeffint ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); 1402219820Sjeff 1403219820Sjeff/** 1404219820Sjeff * ib_destroy_ah - Destroys an address handle. 1405219820Sjeff * @ah: The address handle to destroy. 1406219820Sjeff */ 1407219820Sjeffint ib_destroy_ah(struct ib_ah *ah); 1408219820Sjeff 1409219820Sjeff/** 1410219820Sjeff * ib_create_xrc_srq - Creates an XRC SRQ associated with the specified 1411219820Sjeff * protection domain, cq, and xrc domain. 1412219820Sjeff * @pd: The protection domain associated with the SRQ. 1413219820Sjeff * @xrc_cq: The cq to be associated with the XRC SRQ. 1414219820Sjeff * @xrcd: The XRC domain to be associated with the XRC SRQ. 1415219820Sjeff * @srq_init_attr: A list of initial attributes required to create the 1416219820Sjeff * XRC SRQ. If XRC SRQ creation succeeds, then the attributes are updated 1417219820Sjeff * to the actual capabilities of the created XRC SRQ. 1418219820Sjeff * 1419219820Sjeff * srq_attr->max_wr and srq_attr->max_sge are read the determine the 1420219820Sjeff * requested size of the XRC SRQ, and set to the actual values allocated 1421219820Sjeff * on return. If ib_create_xrc_srq() succeeds, then max_wr and max_sge 1422219820Sjeff * will always be at least as large as the requested values. 1423219820Sjeff */ 1424219820Sjeffstruct ib_srq *ib_create_xrc_srq(struct ib_pd *pd, 1425219820Sjeff struct ib_cq *xrc_cq, 1426219820Sjeff struct ib_xrcd *xrcd, 1427219820Sjeff struct ib_srq_init_attr *srq_init_attr); 1428219820Sjeff 1429219820Sjeff/** 1430219820Sjeff * ib_create_srq - Creates an SRQ associated with the specified 1431219820Sjeff * protection domain. 1432219820Sjeff * @pd: The protection domain associated with the SRQ. 1433219820Sjeff * @srq_init_attr: A list of initial attributes required to create the 1434219820Sjeff * SRQ. If SRQ creation succeeds, then the attributes are updated to 1435219820Sjeff * the actual capabilities of the created SRQ. 1436219820Sjeff * 1437219820Sjeff * srq_attr->max_wr and srq_attr->max_sge are read the determine the 1438219820Sjeff * requested size of the SRQ, and set to the actual values allocated 1439219820Sjeff * on return. If ib_create_srq() succeeds, then max_wr and max_sge 1440219820Sjeff * will always be at least as large as the requested values. 1441219820Sjeff */ 1442219820Sjeffstruct ib_srq *ib_create_srq(struct ib_pd *pd, 1443219820Sjeff struct ib_srq_init_attr *srq_init_attr); 1444219820Sjeff 1445219820Sjeff/** 1446219820Sjeff * ib_modify_srq - Modifies the attributes for the specified SRQ. 1447219820Sjeff * @srq: The SRQ to modify. 1448219820Sjeff * @srq_attr: On input, specifies the SRQ attributes to modify. On output, 1449219820Sjeff * the current values of selected SRQ attributes are returned. 1450219820Sjeff * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ 1451219820Sjeff * are being modified. 1452219820Sjeff * 1453219820Sjeff * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or 1454219820Sjeff * IB_SRQ_LIMIT to set the SRQ's limit and request notification when 1455219820Sjeff * the number of receives queued drops below the limit. 1456219820Sjeff */ 1457219820Sjeffint ib_modify_srq(struct ib_srq *srq, 1458219820Sjeff struct ib_srq_attr *srq_attr, 1459219820Sjeff enum ib_srq_attr_mask srq_attr_mask); 1460219820Sjeff 1461219820Sjeff/** 1462219820Sjeff * ib_query_srq - Returns the attribute list and current values for the 1463219820Sjeff * specified SRQ. 1464219820Sjeff * @srq: The SRQ to query. 1465219820Sjeff * @srq_attr: The attributes of the specified SRQ. 1466219820Sjeff */ 1467219820Sjeffint ib_query_srq(struct ib_srq *srq, 1468219820Sjeff struct ib_srq_attr *srq_attr); 1469219820Sjeff 1470219820Sjeff/** 1471219820Sjeff * ib_destroy_srq - Destroys the specified SRQ. 1472219820Sjeff * @srq: The SRQ to destroy. 1473219820Sjeff */ 1474219820Sjeffint ib_destroy_srq(struct ib_srq *srq); 1475219820Sjeff 1476219820Sjeff/** 1477219820Sjeff * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. 1478219820Sjeff * @srq: The SRQ to post the work request on. 1479219820Sjeff * @recv_wr: A list of work requests to post on the receive queue. 1480219820Sjeff * @bad_recv_wr: On an immediate failure, this parameter will reference 1481219820Sjeff * the work request that failed to be posted on the QP. 1482219820Sjeff */ 1483219820Sjeffstatic inline int ib_post_srq_recv(struct ib_srq *srq, 1484219820Sjeff struct ib_recv_wr *recv_wr, 1485219820Sjeff struct ib_recv_wr **bad_recv_wr) 1486219820Sjeff{ 1487219820Sjeff return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); 1488219820Sjeff} 1489219820Sjeff 1490219820Sjeff/** 1491219820Sjeff * ib_create_qp - Creates a QP associated with the specified protection 1492219820Sjeff * domain. 1493219820Sjeff * @pd: The protection domain associated with the QP. 1494219820Sjeff * @qp_init_attr: A list of initial attributes required to create the 1495219820Sjeff * QP. If QP creation succeeds, then the attributes are updated to 1496219820Sjeff * the actual capabilities of the created QP. 1497219820Sjeff */ 1498219820Sjeffstruct ib_qp *ib_create_qp(struct ib_pd *pd, 1499219820Sjeff struct ib_qp_init_attr *qp_init_attr); 1500219820Sjeff 1501219820Sjeff/** 1502219820Sjeff * ib_modify_qp - Modifies the attributes for the specified QP and then 1503219820Sjeff * transitions the QP to the given state. 1504219820Sjeff * @qp: The QP to modify. 1505219820Sjeff * @qp_attr: On input, specifies the QP attributes to modify. On output, 1506219820Sjeff * the current values of selected QP attributes are returned. 1507219820Sjeff * @qp_attr_mask: A bit-mask used to specify which attributes of the QP 1508219820Sjeff * are being modified. 1509219820Sjeff */ 1510219820Sjeffint ib_modify_qp(struct ib_qp *qp, 1511219820Sjeff struct ib_qp_attr *qp_attr, 1512219820Sjeff int qp_attr_mask); 1513219820Sjeff 1514219820Sjeff/** 1515219820Sjeff * ib_query_qp - Returns the attribute list and current values for the 1516219820Sjeff * specified QP. 1517219820Sjeff * @qp: The QP to query. 1518219820Sjeff * @qp_attr: The attributes of the specified QP. 1519219820Sjeff * @qp_attr_mask: A bit-mask used to select specific attributes to query. 1520219820Sjeff * @qp_init_attr: Additional attributes of the selected QP. 1521219820Sjeff * 1522219820Sjeff * The qp_attr_mask may be used to limit the query to gathering only the 1523219820Sjeff * selected attributes. 1524219820Sjeff */ 1525219820Sjeffint ib_query_qp(struct ib_qp *qp, 1526219820Sjeff struct ib_qp_attr *qp_attr, 1527219820Sjeff int qp_attr_mask, 1528219820Sjeff struct ib_qp_init_attr *qp_init_attr); 1529219820Sjeff 1530219820Sjeff/** 1531219820Sjeff * ib_destroy_qp - Destroys the specified QP. 1532219820Sjeff * @qp: The QP to destroy. 1533219820Sjeff */ 1534219820Sjeffint ib_destroy_qp(struct ib_qp *qp); 1535219820Sjeff 1536219820Sjeff/** 1537219820Sjeff * ib_post_send - Posts a list of work requests to the send queue of 1538219820Sjeff * the specified QP. 1539219820Sjeff * @qp: The QP to post the work request on. 1540219820Sjeff * @send_wr: A list of work requests to post on the send queue. 1541219820Sjeff * @bad_send_wr: On an immediate failure, this parameter will reference 1542219820Sjeff * the work request that failed to be posted on the QP. 1543219820Sjeff */ 1544219820Sjeffstatic inline int ib_post_send(struct ib_qp *qp, 1545219820Sjeff struct ib_send_wr *send_wr, 1546219820Sjeff struct ib_send_wr **bad_send_wr) 1547219820Sjeff{ 1548219820Sjeff return qp->device->post_send(qp, send_wr, bad_send_wr); 1549219820Sjeff} 1550219820Sjeff 1551219820Sjeff/** 1552219820Sjeff * ib_post_recv - Posts a list of work requests to the receive queue of 1553219820Sjeff * the specified QP. 1554219820Sjeff * @qp: The QP to post the work request on. 1555219820Sjeff * @recv_wr: A list of work requests to post on the receive queue. 1556219820Sjeff * @bad_recv_wr: On an immediate failure, this parameter will reference 1557219820Sjeff * the work request that failed to be posted on the QP. 1558219820Sjeff */ 1559219820Sjeffstatic inline int ib_post_recv(struct ib_qp *qp, 1560219820Sjeff struct ib_recv_wr *recv_wr, 1561219820Sjeff struct ib_recv_wr **bad_recv_wr) 1562219820Sjeff{ 1563219820Sjeff return qp->device->post_recv(qp, recv_wr, bad_recv_wr); 1564219820Sjeff} 1565219820Sjeff 1566219820Sjeff/* 1567219820Sjeff * IB_CQ_VECTOR_LEAST_ATTACHED: The constant specifies that 1568219820Sjeff * the CQ will be attached to the completion vector that has 1569219820Sjeff * the least number of CQs already attached to it. 1570219820Sjeff */ 1571219820Sjeff#define IB_CQ_VECTOR_LEAST_ATTACHED 0xffffffff 1572219820Sjeff 1573219820Sjeff/** 1574219820Sjeff * ib_create_cq - Creates a CQ on the specified device. 1575219820Sjeff * @device: The device on which to create the CQ. 1576219820Sjeff * @comp_handler: A user-specified callback that is invoked when a 1577219820Sjeff * completion event occurs on the CQ. 1578219820Sjeff * @event_handler: A user-specified callback that is invoked when an 1579219820Sjeff * asynchronous event not associated with a completion occurs on the CQ. 1580219820Sjeff * @cq_context: Context associated with the CQ returned to the user via 1581219820Sjeff * the associated completion and event handlers. 1582219820Sjeff * @cqe: The minimum size of the CQ. 1583219820Sjeff * @comp_vector - Completion vector used to signal completion events. 1584219820Sjeff * Must be >= 0 and < context->num_comp_vectors 1585219820Sjeff * or IB_CQ_VECTOR_LEAST_ATTACHED. 1586219820Sjeff * 1587219820Sjeff * Users can examine the cq structure to determine the actual CQ size. 1588219820Sjeff */ 1589219820Sjeffstruct ib_cq *ib_create_cq(struct ib_device *device, 1590219820Sjeff ib_comp_handler comp_handler, 1591219820Sjeff void (*event_handler)(struct ib_event *, void *), 1592219820Sjeff void *cq_context, int cqe, int comp_vector); 1593219820Sjeff 1594219820Sjeff/** 1595219820Sjeff * ib_resize_cq - Modifies the capacity of the CQ. 1596219820Sjeff * @cq: The CQ to resize. 1597219820Sjeff * @cqe: The minimum size of the CQ. 1598219820Sjeff * 1599219820Sjeff * Users can examine the cq structure to determine the actual CQ size. 1600219820Sjeff */ 1601219820Sjeffint ib_resize_cq(struct ib_cq *cq, int cqe); 1602219820Sjeff 1603219820Sjeff/** 1604219820Sjeff * ib_modify_cq - Modifies moderation params of the CQ 1605219820Sjeff * @cq: The CQ to modify. 1606219820Sjeff * @cq_count: number of CQEs that will trigger an event 1607219820Sjeff * @cq_period: max period of time in usec before triggering an event 1608219820Sjeff * 1609219820Sjeff */ 1610219820Sjeffint ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); 1611219820Sjeff 1612219820Sjeff/** 1613219820Sjeff * ib_destroy_cq - Destroys the specified CQ. 1614219820Sjeff * @cq: The CQ to destroy. 1615219820Sjeff */ 1616219820Sjeffint ib_destroy_cq(struct ib_cq *cq); 1617219820Sjeff 1618219820Sjeff/** 1619219820Sjeff * ib_poll_cq - poll a CQ for completion(s) 1620219820Sjeff * @cq:the CQ being polled 1621219820Sjeff * @num_entries:maximum number of completions to return 1622219820Sjeff * @wc:array of at least @num_entries &struct ib_wc where completions 1623219820Sjeff * will be returned 1624219820Sjeff * 1625219820Sjeff * Poll a CQ for (possibly multiple) completions. If the return value 1626219820Sjeff * is < 0, an error occurred. If the return value is >= 0, it is the 1627219820Sjeff * number of completions returned. If the return value is 1628219820Sjeff * non-negative and < num_entries, then the CQ was emptied. 1629219820Sjeff */ 1630219820Sjeffstatic inline int ib_poll_cq(struct ib_cq *cq, int num_entries, 1631219820Sjeff struct ib_wc *wc) 1632219820Sjeff{ 1633219820Sjeff return cq->device->poll_cq(cq, num_entries, wc); 1634219820Sjeff} 1635219820Sjeff 1636219820Sjeff/** 1637219820Sjeff * ib_peek_cq - Returns the number of unreaped completions currently 1638219820Sjeff * on the specified CQ. 1639219820Sjeff * @cq: The CQ to peek. 1640219820Sjeff * @wc_cnt: A minimum number of unreaped completions to check for. 1641219820Sjeff * 1642219820Sjeff * If the number of unreaped completions is greater than or equal to wc_cnt, 1643219820Sjeff * this function returns wc_cnt, otherwise, it returns the actual number of 1644219820Sjeff * unreaped completions. 1645219820Sjeff */ 1646219820Sjeffint ib_peek_cq(struct ib_cq *cq, int wc_cnt); 1647219820Sjeff 1648219820Sjeff/** 1649219820Sjeff * ib_req_notify_cq - Request completion notification on a CQ. 1650219820Sjeff * @cq: The CQ to generate an event for. 1651219820Sjeff * @flags: 1652219820Sjeff * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP 1653219820Sjeff * to request an event on the next solicited event or next work 1654219820Sjeff * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS 1655219820Sjeff * may also be |ed in to request a hint about missed events, as 1656219820Sjeff * described below. 1657219820Sjeff * 1658219820Sjeff * Return Value: 1659219820Sjeff * < 0 means an error occurred while requesting notification 1660219820Sjeff * == 0 means notification was requested successfully, and if 1661219820Sjeff * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events 1662219820Sjeff * were missed and it is safe to wait for another event. In 1663219820Sjeff * this case is it guaranteed that any work completions added 1664219820Sjeff * to the CQ since the last CQ poll will trigger a completion 1665219820Sjeff * notification event. 1666219820Sjeff * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed 1667219820Sjeff * in. It means that the consumer must poll the CQ again to 1668219820Sjeff * make sure it is empty to avoid missing an event because of a 1669219820Sjeff * race between requesting notification and an entry being 1670219820Sjeff * added to the CQ. This return value means it is possible 1671219820Sjeff * (but not guaranteed) that a work completion has been added 1672219820Sjeff * to the CQ since the last poll without triggering a 1673219820Sjeff * completion notification event. 1674219820Sjeff */ 1675219820Sjeffstatic inline int ib_req_notify_cq(struct ib_cq *cq, 1676219820Sjeff enum ib_cq_notify_flags flags) 1677219820Sjeff{ 1678219820Sjeff return cq->device->req_notify_cq(cq, flags); 1679219820Sjeff} 1680219820Sjeff 1681219820Sjeff/** 1682219820Sjeff * ib_req_ncomp_notif - Request completion notification when there are 1683219820Sjeff * at least the specified number of unreaped completions on the CQ. 1684219820Sjeff * @cq: The CQ to generate an event for. 1685219820Sjeff * @wc_cnt: The number of unreaped completions that should be on the 1686219820Sjeff * CQ before an event is generated. 1687219820Sjeff */ 1688219820Sjeffstatic inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) 1689219820Sjeff{ 1690219820Sjeff return cq->device->req_ncomp_notif ? 1691219820Sjeff cq->device->req_ncomp_notif(cq, wc_cnt) : 1692219820Sjeff -ENOSYS; 1693219820Sjeff} 1694219820Sjeff 1695219820Sjeff/** 1696219820Sjeff * ib_get_dma_mr - Returns a memory region for system memory that is 1697219820Sjeff * usable for DMA. 1698219820Sjeff * @pd: The protection domain associated with the memory region. 1699219820Sjeff * @mr_access_flags: Specifies the memory access rights. 1700219820Sjeff * 1701219820Sjeff * Note that the ib_dma_*() functions defined below must be used 1702219820Sjeff * to create/destroy addresses used with the Lkey or Rkey returned 1703219820Sjeff * by ib_get_dma_mr(). 1704219820Sjeff */ 1705219820Sjeffstruct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags); 1706219820Sjeff 1707219820Sjeff/** 1708219820Sjeff * ib_dma_mapping_error - check a DMA addr for error 1709219820Sjeff * @dev: The device for which the dma_addr was created 1710219820Sjeff * @dma_addr: The DMA address to check 1711219820Sjeff */ 1712219820Sjeffstatic inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) 1713219820Sjeff{ 1714219820Sjeff if (dev->dma_ops) 1715219820Sjeff return dev->dma_ops->mapping_error(dev, dma_addr); 1716219820Sjeff return dma_mapping_error(dev->dma_device, dma_addr); 1717219820Sjeff} 1718219820Sjeff 1719219820Sjeff/** 1720219820Sjeff * ib_dma_map_single - Map a kernel virtual address to DMA address 1721219820Sjeff * @dev: The device for which the dma_addr is to be created 1722219820Sjeff * @cpu_addr: The kernel virtual address 1723219820Sjeff * @size: The size of the region in bytes 1724219820Sjeff * @direction: The direction of the DMA 1725219820Sjeff */ 1726219820Sjeffstatic inline u64 ib_dma_map_single(struct ib_device *dev, 1727219820Sjeff void *cpu_addr, size_t size, 1728219820Sjeff enum dma_data_direction direction) 1729219820Sjeff{ 1730219820Sjeff if (dev->dma_ops) 1731219820Sjeff return dev->dma_ops->map_single(dev, cpu_addr, size, direction); 1732219820Sjeff return dma_map_single(dev->dma_device, cpu_addr, size, direction); 1733219820Sjeff} 1734219820Sjeff 1735219820Sjeff/** 1736219820Sjeff * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() 1737219820Sjeff * @dev: The device for which the DMA address was created 1738219820Sjeff * @addr: The DMA address 1739219820Sjeff * @size: The size of the region in bytes 1740219820Sjeff * @direction: The direction of the DMA 1741219820Sjeff */ 1742219820Sjeffstatic inline void ib_dma_unmap_single(struct ib_device *dev, 1743219820Sjeff u64 addr, size_t size, 1744219820Sjeff enum dma_data_direction direction) 1745219820Sjeff{ 1746219820Sjeff if (dev->dma_ops) 1747219820Sjeff dev->dma_ops->unmap_single(dev, addr, size, direction); 1748219820Sjeff else 1749219820Sjeff dma_unmap_single(dev->dma_device, addr, size, direction); 1750219820Sjeff} 1751219820Sjeff 1752219820Sjeffstatic inline u64 ib_dma_map_single_attrs(struct ib_device *dev, 1753219820Sjeff void *cpu_addr, size_t size, 1754219820Sjeff enum dma_data_direction direction, 1755219820Sjeff struct dma_attrs *attrs) 1756219820Sjeff{ 1757219820Sjeff return dma_map_single_attrs(dev->dma_device, cpu_addr, size, 1758219820Sjeff direction, attrs); 1759219820Sjeff} 1760219820Sjeff 1761219820Sjeffstatic inline void ib_dma_unmap_single_attrs(struct ib_device *dev, 1762219820Sjeff u64 addr, size_t size, 1763219820Sjeff enum dma_data_direction direction, 1764219820Sjeff struct dma_attrs *attrs) 1765219820Sjeff{ 1766219820Sjeff return dma_unmap_single_attrs(dev->dma_device, addr, size, 1767219820Sjeff direction, attrs); 1768219820Sjeff} 1769219820Sjeff 1770219820Sjeff/** 1771219820Sjeff * ib_dma_map_page - Map a physical page to DMA address 1772219820Sjeff * @dev: The device for which the dma_addr is to be created 1773219820Sjeff * @page: The page to be mapped 1774219820Sjeff * @offset: The offset within the page 1775219820Sjeff * @size: The size of the region in bytes 1776219820Sjeff * @direction: The direction of the DMA 1777219820Sjeff */ 1778219820Sjeffstatic inline u64 ib_dma_map_page(struct ib_device *dev, 1779219820Sjeff struct page *page, 1780219820Sjeff unsigned long offset, 1781219820Sjeff size_t size, 1782219820Sjeff enum dma_data_direction direction) 1783219820Sjeff{ 1784219820Sjeff if (dev->dma_ops) 1785219820Sjeff return dev->dma_ops->map_page(dev, page, offset, size, direction); 1786219820Sjeff return dma_map_page(dev->dma_device, page, offset, size, direction); 1787219820Sjeff} 1788219820Sjeff 1789219820Sjeff/** 1790219820Sjeff * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() 1791219820Sjeff * @dev: The device for which the DMA address was created 1792219820Sjeff * @addr: The DMA address 1793219820Sjeff * @size: The size of the region in bytes 1794219820Sjeff * @direction: The direction of the DMA 1795219820Sjeff */ 1796219820Sjeffstatic inline void ib_dma_unmap_page(struct ib_device *dev, 1797219820Sjeff u64 addr, size_t size, 1798219820Sjeff enum dma_data_direction direction) 1799219820Sjeff{ 1800219820Sjeff if (dev->dma_ops) 1801219820Sjeff dev->dma_ops->unmap_page(dev, addr, size, direction); 1802219820Sjeff else 1803219820Sjeff dma_unmap_page(dev->dma_device, addr, size, direction); 1804219820Sjeff} 1805219820Sjeff 1806219820Sjeff/** 1807219820Sjeff * ib_dma_map_sg - Map a scatter/gather list to DMA addresses 1808219820Sjeff * @dev: The device for which the DMA addresses are to be created 1809219820Sjeff * @sg: The array of scatter/gather entries 1810219820Sjeff * @nents: The number of scatter/gather entries 1811219820Sjeff * @direction: The direction of the DMA 1812219820Sjeff */ 1813219820Sjeffstatic inline int ib_dma_map_sg(struct ib_device *dev, 1814219820Sjeff struct scatterlist *sg, int nents, 1815219820Sjeff enum dma_data_direction direction) 1816219820Sjeff{ 1817219820Sjeff if (dev->dma_ops) 1818219820Sjeff return dev->dma_ops->map_sg(dev, sg, nents, direction); 1819219820Sjeff return dma_map_sg(dev->dma_device, sg, nents, direction); 1820219820Sjeff} 1821219820Sjeff 1822219820Sjeff/** 1823219820Sjeff * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses 1824219820Sjeff * @dev: The device for which the DMA addresses were created 1825219820Sjeff * @sg: The array of scatter/gather entries 1826219820Sjeff * @nents: The number of scatter/gather entries 1827219820Sjeff * @direction: The direction of the DMA 1828219820Sjeff */ 1829219820Sjeffstatic inline void ib_dma_unmap_sg(struct ib_device *dev, 1830219820Sjeff struct scatterlist *sg, int nents, 1831219820Sjeff enum dma_data_direction direction) 1832219820Sjeff{ 1833219820Sjeff if (dev->dma_ops) 1834219820Sjeff dev->dma_ops->unmap_sg(dev, sg, nents, direction); 1835219820Sjeff else 1836219820Sjeff dma_unmap_sg(dev->dma_device, sg, nents, direction); 1837219820Sjeff} 1838219820Sjeff 1839219820Sjeffstatic inline int ib_dma_map_sg_attrs(struct ib_device *dev, 1840219820Sjeff struct scatterlist *sg, int nents, 1841219820Sjeff enum dma_data_direction direction, 1842219820Sjeff struct dma_attrs *attrs) 1843219820Sjeff{ 1844219820Sjeff return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs); 1845219820Sjeff} 1846219820Sjeff 1847219820Sjeffstatic inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, 1848219820Sjeff struct scatterlist *sg, int nents, 1849219820Sjeff enum dma_data_direction direction, 1850219820Sjeff struct dma_attrs *attrs) 1851219820Sjeff{ 1852219820Sjeff dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs); 1853219820Sjeff} 1854219820Sjeff/** 1855219820Sjeff * ib_sg_dma_address - Return the DMA address from a scatter/gather entry 1856219820Sjeff * @dev: The device for which the DMA addresses were created 1857219820Sjeff * @sg: The scatter/gather entry 1858219820Sjeff */ 1859219820Sjeffstatic inline u64 ib_sg_dma_address(struct ib_device *dev, 1860219820Sjeff struct scatterlist *sg) 1861219820Sjeff{ 1862219820Sjeff if (dev->dma_ops) 1863219820Sjeff return dev->dma_ops->dma_address(dev, sg); 1864219820Sjeff return sg_dma_address(sg); 1865219820Sjeff} 1866219820Sjeff 1867219820Sjeff/** 1868219820Sjeff * ib_sg_dma_len - Return the DMA length from a scatter/gather entry 1869219820Sjeff * @dev: The device for which the DMA addresses were created 1870219820Sjeff * @sg: The scatter/gather entry 1871219820Sjeff */ 1872219820Sjeffstatic inline unsigned int ib_sg_dma_len(struct ib_device *dev, 1873219820Sjeff struct scatterlist *sg) 1874219820Sjeff{ 1875219820Sjeff if (dev->dma_ops) 1876219820Sjeff return dev->dma_ops->dma_len(dev, sg); 1877219820Sjeff return sg_dma_len(sg); 1878219820Sjeff} 1879219820Sjeff 1880219820Sjeff/** 1881219820Sjeff * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU 1882219820Sjeff * @dev: The device for which the DMA address was created 1883219820Sjeff * @addr: The DMA address 1884219820Sjeff * @size: The size of the region in bytes 1885219820Sjeff * @dir: The direction of the DMA 1886219820Sjeff */ 1887219820Sjeffstatic inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, 1888219820Sjeff u64 addr, 1889219820Sjeff size_t size, 1890219820Sjeff enum dma_data_direction dir) 1891219820Sjeff{ 1892219820Sjeff if (dev->dma_ops) 1893219820Sjeff dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir); 1894219820Sjeff else 1895219820Sjeff dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); 1896219820Sjeff} 1897219820Sjeff 1898219820Sjeff/** 1899219820Sjeff * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device 1900219820Sjeff * @dev: The device for which the DMA address was created 1901219820Sjeff * @addr: The DMA address 1902219820Sjeff * @size: The size of the region in bytes 1903219820Sjeff * @dir: The direction of the DMA 1904219820Sjeff */ 1905219820Sjeffstatic inline void ib_dma_sync_single_for_device(struct ib_device *dev, 1906219820Sjeff u64 addr, 1907219820Sjeff size_t size, 1908219820Sjeff enum dma_data_direction dir) 1909219820Sjeff{ 1910219820Sjeff if (dev->dma_ops) 1911219820Sjeff dev->dma_ops->sync_single_for_device(dev, addr, size, dir); 1912219820Sjeff else 1913219820Sjeff dma_sync_single_for_device(dev->dma_device, addr, size, dir); 1914219820Sjeff} 1915219820Sjeff 1916219820Sjeff/** 1917219820Sjeff * ib_dma_alloc_coherent - Allocate memory and map it for DMA 1918219820Sjeff * @dev: The device for which the DMA address is requested 1919219820Sjeff * @size: The size of the region to allocate in bytes 1920219820Sjeff * @dma_handle: A pointer for returning the DMA address of the region 1921219820Sjeff * @flag: memory allocator flags 1922219820Sjeff */ 1923219820Sjeffstatic inline void *ib_dma_alloc_coherent(struct ib_device *dev, 1924219820Sjeff size_t size, 1925219820Sjeff u64 *dma_handle, 1926219820Sjeff gfp_t flag) 1927219820Sjeff{ 1928219820Sjeff if (dev->dma_ops) 1929219820Sjeff return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag); 1930219820Sjeff else { 1931219820Sjeff dma_addr_t handle; 1932219820Sjeff void *ret; 1933219820Sjeff 1934219820Sjeff ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag); 1935219820Sjeff *dma_handle = handle; 1936219820Sjeff return ret; 1937219820Sjeff } 1938219820Sjeff} 1939219820Sjeff 1940219820Sjeff/** 1941219820Sjeff * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() 1942219820Sjeff * @dev: The device for which the DMA addresses were allocated 1943219820Sjeff * @size: The size of the region 1944219820Sjeff * @cpu_addr: the address returned by ib_dma_alloc_coherent() 1945219820Sjeff * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() 1946219820Sjeff */ 1947219820Sjeffstatic inline void ib_dma_free_coherent(struct ib_device *dev, 1948219820Sjeff size_t size, void *cpu_addr, 1949219820Sjeff u64 dma_handle) 1950219820Sjeff{ 1951219820Sjeff if (dev->dma_ops) 1952219820Sjeff dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); 1953219820Sjeff else 1954219820Sjeff dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); 1955219820Sjeff} 1956219820Sjeff 1957219820Sjeff/** 1958219820Sjeff * ib_reg_phys_mr - Prepares a virtually addressed memory region for use 1959219820Sjeff * by an HCA. 1960219820Sjeff * @pd: The protection domain associated assigned to the registered region. 1961219820Sjeff * @phys_buf_array: Specifies a list of physical buffers to use in the 1962219820Sjeff * memory region. 1963219820Sjeff * @num_phys_buf: Specifies the size of the phys_buf_array. 1964219820Sjeff * @mr_access_flags: Specifies the memory access rights. 1965219820Sjeff * @iova_start: The offset of the region's starting I/O virtual address. 1966219820Sjeff */ 1967219820Sjeffstruct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, 1968219820Sjeff struct ib_phys_buf *phys_buf_array, 1969219820Sjeff int num_phys_buf, 1970219820Sjeff int mr_access_flags, 1971219820Sjeff u64 *iova_start); 1972219820Sjeff 1973219820Sjeff/** 1974219820Sjeff * ib_rereg_phys_mr - Modifies the attributes of an existing memory region. 1975219820Sjeff * Conceptually, this call performs the functions deregister memory region 1976219820Sjeff * followed by register physical memory region. Where possible, 1977219820Sjeff * resources are reused instead of deallocated and reallocated. 1978219820Sjeff * @mr: The memory region to modify. 1979219820Sjeff * @mr_rereg_mask: A bit-mask used to indicate which of the following 1980219820Sjeff * properties of the memory region are being modified. 1981219820Sjeff * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies 1982219820Sjeff * the new protection domain to associated with the memory region, 1983219820Sjeff * otherwise, this parameter is ignored. 1984219820Sjeff * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this 1985219820Sjeff * field specifies a list of physical buffers to use in the new 1986219820Sjeff * translation, otherwise, this parameter is ignored. 1987219820Sjeff * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this 1988219820Sjeff * field specifies the size of the phys_buf_array, otherwise, this 1989219820Sjeff * parameter is ignored. 1990219820Sjeff * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this 1991219820Sjeff * field specifies the new memory access rights, otherwise, this 1992219820Sjeff * parameter is ignored. 1993219820Sjeff * @iova_start: The offset of the region's starting I/O virtual address. 1994219820Sjeff */ 1995219820Sjeffint ib_rereg_phys_mr(struct ib_mr *mr, 1996219820Sjeff int mr_rereg_mask, 1997219820Sjeff struct ib_pd *pd, 1998219820Sjeff struct ib_phys_buf *phys_buf_array, 1999219820Sjeff int num_phys_buf, 2000219820Sjeff int mr_access_flags, 2001219820Sjeff u64 *iova_start); 2002219820Sjeff 2003219820Sjeff/** 2004219820Sjeff * ib_query_mr - Retrieves information about a specific memory region. 2005219820Sjeff * @mr: The memory region to retrieve information about. 2006219820Sjeff * @mr_attr: The attributes of the specified memory region. 2007219820Sjeff */ 2008219820Sjeffint ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr); 2009219820Sjeff 2010219820Sjeff/** 2011219820Sjeff * ib_dereg_mr - Deregisters a memory region and removes it from the 2012219820Sjeff * HCA translation table. 2013219820Sjeff * @mr: The memory region to deregister. 2014219820Sjeff */ 2015219820Sjeffint ib_dereg_mr(struct ib_mr *mr); 2016219820Sjeff 2017219820Sjeff/** 2018219820Sjeff * ib_alloc_fast_reg_mr - Allocates memory region usable with the 2019219820Sjeff * IB_WR_FAST_REG_MR send work request. 2020219820Sjeff * @pd: The protection domain associated with the region. 2021219820Sjeff * @max_page_list_len: requested max physical buffer list length to be 2022219820Sjeff * used with fast register work requests for this MR. 2023219820Sjeff */ 2024219820Sjeffstruct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len); 2025219820Sjeff 2026219820Sjeff/** 2027219820Sjeff * ib_alloc_fast_reg_page_list - Allocates a page list array 2028219820Sjeff * @device - ib device pointer. 2029219820Sjeff * @page_list_len - size of the page list array to be allocated. 2030219820Sjeff * 2031219820Sjeff * This allocates and returns a struct ib_fast_reg_page_list * and a 2032219820Sjeff * page_list array that is at least page_list_len in size. The actual 2033219820Sjeff * size is returned in max_page_list_len. The caller is responsible 2034219820Sjeff * for initializing the contents of the page_list array before posting 2035219820Sjeff * a send work request with the IB_WC_FAST_REG_MR opcode. 2036219820Sjeff * 2037219820Sjeff * The page_list array entries must be translated using one of the 2038219820Sjeff * ib_dma_*() functions just like the addresses passed to 2039219820Sjeff * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct 2040219820Sjeff * ib_fast_reg_page_list must not be modified by the caller until the 2041219820Sjeff * IB_WC_FAST_REG_MR work request completes. 2042219820Sjeff */ 2043219820Sjeffstruct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list( 2044219820Sjeff struct ib_device *device, int page_list_len); 2045219820Sjeff 2046219820Sjeff/** 2047219820Sjeff * ib_free_fast_reg_page_list - Deallocates a previously allocated 2048219820Sjeff * page list array. 2049219820Sjeff * @page_list - struct ib_fast_reg_page_list pointer to be deallocated. 2050219820Sjeff */ 2051219820Sjeffvoid ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list); 2052219820Sjeff 2053219820Sjeff/** 2054219820Sjeff * ib_update_fast_reg_key - updates the key portion of the fast_reg MR 2055219820Sjeff * R_Key and L_Key. 2056219820Sjeff * @mr - struct ib_mr pointer to be updated. 2057219820Sjeff * @newkey - new key to be used. 2058219820Sjeff */ 2059219820Sjeffstatic inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) 2060219820Sjeff{ 2061219820Sjeff mr->lkey = (mr->lkey & 0xffffff00) | newkey; 2062219820Sjeff mr->rkey = (mr->rkey & 0xffffff00) | newkey; 2063219820Sjeff} 2064219820Sjeff 2065219820Sjeff/** 2066219820Sjeff * ib_alloc_mw - Allocates a memory window. 2067219820Sjeff * @pd: The protection domain associated with the memory window. 2068219820Sjeff */ 2069219820Sjeffstruct ib_mw *ib_alloc_mw(struct ib_pd *pd); 2070219820Sjeff 2071219820Sjeff/** 2072219820Sjeff * ib_bind_mw - Posts a work request to the send queue of the specified 2073219820Sjeff * QP, which binds the memory window to the given address range and 2074219820Sjeff * remote access attributes. 2075219820Sjeff * @qp: QP to post the bind work request on. 2076219820Sjeff * @mw: The memory window to bind. 2077219820Sjeff * @mw_bind: Specifies information about the memory window, including 2078219820Sjeff * its address range, remote access rights, and associated memory region. 2079219820Sjeff */ 2080219820Sjeffstatic inline int ib_bind_mw(struct ib_qp *qp, 2081219820Sjeff struct ib_mw *mw, 2082219820Sjeff struct ib_mw_bind *mw_bind) 2083219820Sjeff{ 2084219820Sjeff /* XXX reference counting in corresponding MR? */ 2085219820Sjeff return mw->device->bind_mw ? 2086219820Sjeff mw->device->bind_mw(qp, mw, mw_bind) : 2087219820Sjeff -ENOSYS; 2088219820Sjeff} 2089219820Sjeff 2090219820Sjeff/** 2091219820Sjeff * ib_dealloc_mw - Deallocates a memory window. 2092219820Sjeff * @mw: The memory window to deallocate. 2093219820Sjeff */ 2094219820Sjeffint ib_dealloc_mw(struct ib_mw *mw); 2095219820Sjeff 2096219820Sjeff/** 2097219820Sjeff * ib_alloc_fmr - Allocates a unmapped fast memory region. 2098219820Sjeff * @pd: The protection domain associated with the unmapped region. 2099219820Sjeff * @mr_access_flags: Specifies the memory access rights. 2100219820Sjeff * @fmr_attr: Attributes of the unmapped region. 2101219820Sjeff * 2102219820Sjeff * A fast memory region must be mapped before it can be used as part of 2103219820Sjeff * a work request. 2104219820Sjeff */ 2105219820Sjeffstruct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, 2106219820Sjeff int mr_access_flags, 2107219820Sjeff struct ib_fmr_attr *fmr_attr); 2108219820Sjeff 2109219820Sjeff/** 2110219820Sjeff * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region. 2111219820Sjeff * @fmr: The fast memory region to associate with the pages. 2112219820Sjeff * @page_list: An array of physical pages to map to the fast memory region. 2113219820Sjeff * @list_len: The number of pages in page_list. 2114219820Sjeff * @iova: The I/O virtual address to use with the mapped region. 2115219820Sjeff */ 2116219820Sjeffstatic inline int ib_map_phys_fmr(struct ib_fmr *fmr, 2117219820Sjeff u64 *page_list, int list_len, 2118219820Sjeff u64 iova) 2119219820Sjeff{ 2120219820Sjeff return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova); 2121219820Sjeff} 2122219820Sjeff 2123219820Sjeff/** 2124219820Sjeff * ib_unmap_fmr - Removes the mapping from a list of fast memory regions. 2125219820Sjeff * @fmr_list: A linked list of fast memory regions to unmap. 2126219820Sjeff */ 2127219820Sjeffint ib_unmap_fmr(struct list_head *fmr_list); 2128219820Sjeff 2129219820Sjeff/** 2130219820Sjeff * ib_dealloc_fmr - Deallocates a fast memory region. 2131219820Sjeff * @fmr: The fast memory region to deallocate. 2132219820Sjeff */ 2133219820Sjeffint ib_dealloc_fmr(struct ib_fmr *fmr); 2134219820Sjeff 2135219820Sjeff/** 2136219820Sjeff * ib_attach_mcast - Attaches the specified QP to a multicast group. 2137219820Sjeff * @qp: QP to attach to the multicast group. The QP must be type 2138219820Sjeff * IB_QPT_UD. 2139219820Sjeff * @gid: Multicast group GID. 2140219820Sjeff * @lid: Multicast group LID in host byte order. 2141219820Sjeff * 2142219820Sjeff * In order to send and receive multicast packets, subnet 2143219820Sjeff * administration must have created the multicast group and configured 2144219820Sjeff * the fabric appropriately. The port associated with the specified 2145219820Sjeff * QP must also be a member of the multicast group. 2146219820Sjeff */ 2147219820Sjeffint ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); 2148219820Sjeff 2149219820Sjeff/** 2150219820Sjeff * ib_detach_mcast - Detaches the specified QP from a multicast group. 2151219820Sjeff * @qp: QP to detach from the multicast group. 2152219820Sjeff * @gid: Multicast group GID. 2153219820Sjeff * @lid: Multicast group LID in host byte order. 2154219820Sjeff */ 2155219820Sjeffint ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); 2156219820Sjeff 2157219820Sjeff 2158219820Sjeff/** 2159219820Sjeff * ib_dealloc_xrcd - Deallocates an extended reliably connected domain. 2160219820Sjeff * @xrcd: The xrc domain to deallocate. 2161219820Sjeff */ 2162219820Sjeffint ib_dealloc_xrcd(struct ib_xrcd *xrcd); 2163219820Sjeff 2164219820Sjeff/** 2165219820Sjeff * ib_alloc_xrcd - Allocates an extended reliably connected domain. 2166219820Sjeff * @device: The device on which to allocate the xrcd. 2167219820Sjeff */ 2168219820Sjeffstruct ib_xrcd *ib_alloc_xrcd(struct ib_device *device); 2169219820Sjeff 2170219820Sjeff#endif /* IB_VERBS_H */ 2171