2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005, 2006 Cisco Systems. All rights reserved.
10 * This software is available to you under a choice of one of two
11 * licenses. You may choose to be licensed under the terms of the GNU
12 * General Public License (GPL) Version 2, available from the file
13 * COPYING in the main directory of this source tree, or the
14 * OpenIB.org BSD license below:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
24 * - Redistributions in binary form must reproduce the above
25 * copyright notice, this list of conditions and the following
26 * disclaimer in the documentation and/or other materials
27 * provided with the distribution.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
38 * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
41 #if !defined(IB_VERBS_H)
44 #include <linux/types.h>
45 #include <linux/device.h>
47 #include <linux/dma-mapping.h>
49 #include <asm/atomic.h>
50 #include <asm/scatterlist.h>
51 #include <asm/uaccess.h>
62 /* IB values map to NodeInfo:NodeType. */
69 enum rdma_transport_type {
74 enum rdma_transport_type
75 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
77 enum ib_device_cap_flags {
78 IB_DEVICE_RESIZE_MAX_WR = 1,
79 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
80 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
81 IB_DEVICE_RAW_MULTI = (1<<3),
82 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
83 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
84 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
85 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
86 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
87 IB_DEVICE_INIT_TYPE = (1<<9),
88 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
89 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
90 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
91 IB_DEVICE_SRQ_RESIZE = (1<<13),
92 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
93 IB_DEVICE_ZERO_STAG = (1<<15),
94 IB_DEVICE_SEND_W_INV = (1<<16),
95 IB_DEVICE_MEM_WINDOW = (1<<17)
104 struct ib_device_attr {
106 __be64 sys_image_guid;
114 int device_cap_flags;
124 int max_qp_init_rd_atom;
125 int max_ee_init_rd_atom;
126 enum ib_atomic_cap atomic_cap;
133 int max_mcast_qp_attach;
134 int max_total_mcast_qp_attach;
142 u8 local_ca_ack_delay;
153 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
156 case IB_MTU_256: return 256;
157 case IB_MTU_512: return 512;
158 case IB_MTU_1024: return 1024;
159 case IB_MTU_2048: return 2048;
160 case IB_MTU_4096: return 4096;
171 IB_PORT_ACTIVE_DEFER = 5
174 enum ib_port_cap_flags {
176 IB_PORT_NOTICE_SUP = 1 << 2,
177 IB_PORT_TRAP_SUP = 1 << 3,
178 IB_PORT_OPT_IPD_SUP = 1 << 4,
179 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
180 IB_PORT_SL_MAP_SUP = 1 << 6,
181 IB_PORT_MKEY_NVRAM = 1 << 7,
182 IB_PORT_PKEY_NVRAM = 1 << 8,
183 IB_PORT_LED_INFO_SUP = 1 << 9,
184 IB_PORT_SM_DISABLED = 1 << 10,
185 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
186 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
187 IB_PORT_CM_SUP = 1 << 16,
188 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
189 IB_PORT_REINIT_SUP = 1 << 18,
190 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
191 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
192 IB_PORT_DR_NOTICE_SUP = 1 << 21,
193 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
194 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
195 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
196 IB_PORT_CLIENT_REG_SUP = 1 << 25
206 static inline int ib_width_enum_to_int(enum ib_port_width width)
209 case IB_WIDTH_1X: return 1;
210 case IB_WIDTH_4X: return 4;
211 case IB_WIDTH_8X: return 8;
212 case IB_WIDTH_12X: return 12;
217 struct ib_port_attr {
218 enum ib_port_state state;
220 enum ib_mtu active_mtu;
239 enum ib_device_modify_flags {
240 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
241 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
244 struct ib_device_modify {
249 enum ib_port_modify_flags {
250 IB_PORT_SHUTDOWN = 1,
251 IB_PORT_INIT_TYPE = (1<<2),
252 IB_PORT_RESET_QKEY_CNTR = (1<<3)
255 struct ib_port_modify {
256 u32 set_port_cap_mask;
257 u32 clr_port_cap_mask;
265 IB_EVENT_QP_ACCESS_ERR,
269 IB_EVENT_PATH_MIG_ERR,
270 IB_EVENT_DEVICE_FATAL,
271 IB_EVENT_PORT_ACTIVE,
274 IB_EVENT_PKEY_CHANGE,
277 IB_EVENT_SRQ_LIMIT_REACHED,
278 IB_EVENT_QP_LAST_WQE_REACHED,
279 IB_EVENT_CLIENT_REREGISTER
283 struct ib_device *device;
290 enum ib_event_type event;
293 struct ib_event_handler {
294 struct ib_device *device;
295 void (*handler)(struct ib_event_handler *, struct ib_event *);
296 struct list_head list;
299 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
301 (_ptr)->device = _device; \
302 (_ptr)->handler = _handler; \
303 INIT_LIST_HEAD(&(_ptr)->list); \
306 struct ib_global_route {
315 __be32 version_tclass_flow;
324 IB_MULTICAST_QPN = 0xffffff
327 #define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
334 IB_RATE_PORT_CURRENT = 0,
335 IB_RATE_2_5_GBPS = 2,
343 IB_RATE_120_GBPS = 10
347 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
348 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
349 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
350 * @rate: rate to convert.
352 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
355 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
357 * @mult: multiple to convert.
359 enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
362 struct ib_global_route grh;
375 IB_WC_LOC_EEC_OP_ERR,
380 IB_WC_LOC_ACCESS_ERR,
381 IB_WC_REM_INV_REQ_ERR,
382 IB_WC_REM_ACCESS_ERR,
385 IB_WC_RNR_RETRY_EXC_ERR,
386 IB_WC_LOC_RDD_VIOL_ERR,
387 IB_WC_REM_INV_RD_REQ_ERR,
390 IB_WC_INV_EEC_STATE_ERR,
392 IB_WC_RESP_TIMEOUT_ERR,
404 * Set value of IB_WC_RECV so consumers can test if a completion is a
405 * receive by testing (opcode & IB_WC_RECV).
408 IB_WC_RECV_RDMA_WITH_IMM
413 IB_WC_WITH_IMM = (1<<1)
418 enum ib_wc_status status;
419 enum ib_wc_opcode opcode;
430 u8 port_num; /* valid only for DR SMPs on switches */
438 enum ib_srq_attr_mask {
439 IB_SRQ_MAX_WR = 1 << 0,
440 IB_SRQ_LIMIT = 1 << 1,
449 struct ib_srq_init_attr {
450 void (*event_handler)(struct ib_event *, void *);
452 struct ib_srq_attr attr;
470 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
471 * here (and in that order) since the MAD layer uses them as
472 * indices into a 2-entry table.
484 struct ib_qp_init_attr {
485 void (*event_handler)(struct ib_event *, void *);
487 struct ib_cq *send_cq;
488 struct ib_cq *recv_cq;
490 struct ib_qp_cap cap;
491 enum ib_sig_type sq_sig_type;
492 enum ib_qp_type qp_type;
493 u8 port_num; /* special QP types only */
496 enum ib_rnr_timeout {
497 IB_RNR_TIMER_655_36 = 0,
498 IB_RNR_TIMER_000_01 = 1,
499 IB_RNR_TIMER_000_02 = 2,
500 IB_RNR_TIMER_000_03 = 3,
501 IB_RNR_TIMER_000_04 = 4,
502 IB_RNR_TIMER_000_06 = 5,
503 IB_RNR_TIMER_000_08 = 6,
504 IB_RNR_TIMER_000_12 = 7,
505 IB_RNR_TIMER_000_16 = 8,
506 IB_RNR_TIMER_000_24 = 9,
507 IB_RNR_TIMER_000_32 = 10,
508 IB_RNR_TIMER_000_48 = 11,
509 IB_RNR_TIMER_000_64 = 12,
510 IB_RNR_TIMER_000_96 = 13,
511 IB_RNR_TIMER_001_28 = 14,
512 IB_RNR_TIMER_001_92 = 15,
513 IB_RNR_TIMER_002_56 = 16,
514 IB_RNR_TIMER_003_84 = 17,
515 IB_RNR_TIMER_005_12 = 18,
516 IB_RNR_TIMER_007_68 = 19,
517 IB_RNR_TIMER_010_24 = 20,
518 IB_RNR_TIMER_015_36 = 21,
519 IB_RNR_TIMER_020_48 = 22,
520 IB_RNR_TIMER_030_72 = 23,
521 IB_RNR_TIMER_040_96 = 24,
522 IB_RNR_TIMER_061_44 = 25,
523 IB_RNR_TIMER_081_92 = 26,
524 IB_RNR_TIMER_122_88 = 27,
525 IB_RNR_TIMER_163_84 = 28,
526 IB_RNR_TIMER_245_76 = 29,
527 IB_RNR_TIMER_327_68 = 30,
528 IB_RNR_TIMER_491_52 = 31
531 enum ib_qp_attr_mask {
533 IB_QP_CUR_STATE = (1<<1),
534 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
535 IB_QP_ACCESS_FLAGS = (1<<3),
536 IB_QP_PKEY_INDEX = (1<<4),
540 IB_QP_PATH_MTU = (1<<8),
541 IB_QP_TIMEOUT = (1<<9),
542 IB_QP_RETRY_CNT = (1<<10),
543 IB_QP_RNR_RETRY = (1<<11),
544 IB_QP_RQ_PSN = (1<<12),
545 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
546 IB_QP_ALT_PATH = (1<<14),
547 IB_QP_MIN_RNR_TIMER = (1<<15),
548 IB_QP_SQ_PSN = (1<<16),
549 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
550 IB_QP_PATH_MIG_STATE = (1<<18),
552 IB_QP_DEST_QPN = (1<<20)
572 enum ib_qp_state qp_state;
573 enum ib_qp_state cur_qp_state;
574 enum ib_mtu path_mtu;
575 enum ib_mig_state path_mig_state;
581 struct ib_qp_cap cap;
582 struct ib_ah_attr ah_attr;
583 struct ib_ah_attr alt_ah_attr;
586 u8 en_sqd_async_notify;
589 u8 max_dest_rd_atomic;
601 IB_WR_RDMA_WRITE_WITH_IMM,
605 IB_WR_ATOMIC_CMP_AND_SWP,
606 IB_WR_ATOMIC_FETCH_AND_ADD
611 IB_SEND_SIGNALED = (1<<1),
612 IB_SEND_SOLICITED = (1<<2),
613 IB_SEND_INLINE = (1<<3)
623 struct ib_send_wr *next;
625 struct ib_sge *sg_list;
627 enum ib_wr_opcode opcode;
645 u16 pkey_index; /* valid for GSI only */
646 u8 port_num; /* valid for DR SMPs on switch only */
652 struct ib_recv_wr *next;
654 struct ib_sge *sg_list;
658 enum ib_access_flags {
659 IB_ACCESS_LOCAL_WRITE = 1,
660 IB_ACCESS_REMOTE_WRITE = (1<<1),
661 IB_ACCESS_REMOTE_READ = (1<<2),
662 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
663 IB_ACCESS_MW_BIND = (1<<4)
673 u64 device_virt_addr;
680 enum ib_mr_rereg_flags {
681 IB_MR_REREG_TRANS = 1,
682 IB_MR_REREG_PD = (1<<1),
683 IB_MR_REREG_ACCESS = (1<<2)
702 struct ib_device *device;
703 struct list_head pd_list;
704 struct list_head mr_list;
705 struct list_head mw_list;
706 struct list_head cq_list;
707 struct list_head qp_list;
708 struct list_head srq_list;
709 struct list_head ah_list;
713 u64 user_handle; /* handle given to us by userspace */
714 struct ib_ucontext *context; /* associated user context */
715 void *object; /* containing object */
716 struct list_head list; /* link to context's list */
717 u32 id; /* index into kernel idr */
719 struct rw_semaphore mutex; /* protects .live */
724 unsigned long user_base;
725 unsigned long virt_base;
730 struct list_head chunk_list;
733 struct ib_umem_chunk {
734 struct list_head list;
737 struct scatterlist page_list[0];
747 #define IB_UMEM_MAX_PAGE_CHUNK \
748 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
749 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
750 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
752 struct ib_umem_object {
753 struct ib_uobject uobject;
758 struct ib_device *device;
759 struct ib_uobject *uobject;
760 atomic_t usecnt; /* count all resources */
764 struct ib_device *device;
766 struct ib_uobject *uobject;
769 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
772 struct ib_device *device;
773 struct ib_uobject *uobject;
774 ib_comp_handler comp_handler;
775 void (*event_handler)(struct ib_event *, void *);
778 atomic_t usecnt; /* count number of work queues */
782 struct ib_device *device;
784 struct ib_uobject *uobject;
785 void (*event_handler)(struct ib_event *, void *);
791 struct ib_device *device;
793 struct ib_cq *send_cq;
794 struct ib_cq *recv_cq;
796 struct ib_uobject *uobject;
797 void (*event_handler)(struct ib_event *, void *);
800 enum ib_qp_type qp_type;
804 struct ib_device *device;
806 struct ib_uobject *uobject;
809 atomic_t usecnt; /* count number of MWs */
813 struct ib_device *device;
815 struct ib_uobject *uobject;
820 struct ib_device *device;
822 struct list_head list;
830 enum ib_process_mad_flags {
831 IB_MAD_IGNORE_MKEY = 1,
832 IB_MAD_IGNORE_BKEY = 2,
833 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
837 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
838 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
839 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
840 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
843 #define IB_DEVICE_NAME_MAX 64
847 struct ib_event_handler event_handler;
848 struct ib_pkey_cache **pkey_cache;
849 struct ib_gid_cache **gid_cache;
853 struct ib_dma_mapping_ops {
854 int (*mapping_error)(struct ib_device *dev,
856 u64 (*map_single)(struct ib_device *dev,
857 void *ptr, size_t size,
858 enum dma_data_direction direction);
859 void (*unmap_single)(struct ib_device *dev,
860 u64 addr, size_t size,
861 enum dma_data_direction direction);
862 u64 (*map_page)(struct ib_device *dev,
863 struct page *page, unsigned long offset,
865 enum dma_data_direction direction);
866 void (*unmap_page)(struct ib_device *dev,
867 u64 addr, size_t size,
868 enum dma_data_direction direction);
869 int (*map_sg)(struct ib_device *dev,
870 struct scatterlist *sg, int nents,
871 enum dma_data_direction direction);
872 void (*unmap_sg)(struct ib_device *dev,
873 struct scatterlist *sg, int nents,
874 enum dma_data_direction direction);
875 u64 (*dma_address)(struct ib_device *dev,
876 struct scatterlist *sg);
877 unsigned int (*dma_len)(struct ib_device *dev,
878 struct scatterlist *sg);
879 void (*sync_single_for_cpu)(struct ib_device *dev,
882 enum dma_data_direction dir);
883 void (*sync_single_for_device)(struct ib_device *dev,
886 enum dma_data_direction dir);
887 void *(*alloc_coherent)(struct ib_device *dev,
891 void (*free_coherent)(struct ib_device *dev,
892 size_t size, void *cpu_addr,
899 struct device *dma_device;
901 char name[IB_DEVICE_NAME_MAX];
903 struct list_head event_handler_list;
904 spinlock_t event_handler_lock;
906 struct list_head core_list;
907 struct list_head client_data_list;
908 spinlock_t client_data_lock;
910 struct ib_cache cache;
914 struct iw_cm_verbs *iwcm;
916 int (*query_device)(struct ib_device *device,
917 struct ib_device_attr *device_attr);
918 int (*query_port)(struct ib_device *device,
920 struct ib_port_attr *port_attr);
921 int (*query_gid)(struct ib_device *device,
922 u8 port_num, int index,
924 int (*query_pkey)(struct ib_device *device,
925 u8 port_num, u16 index, u16 *pkey);
926 int (*modify_device)(struct ib_device *device,
927 int device_modify_mask,
928 struct ib_device_modify *device_modify);
929 int (*modify_port)(struct ib_device *device,
930 u8 port_num, int port_modify_mask,
931 struct ib_port_modify *port_modify);
932 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
933 struct ib_udata *udata);
934 int (*dealloc_ucontext)(struct ib_ucontext *context);
935 int (*mmap)(struct ib_ucontext *context,
936 struct vm_area_struct *vma);
937 struct ib_pd * (*alloc_pd)(struct ib_device *device,
938 struct ib_ucontext *context,
939 struct ib_udata *udata);
940 int (*dealloc_pd)(struct ib_pd *pd);
941 struct ib_ah * (*create_ah)(struct ib_pd *pd,
942 struct ib_ah_attr *ah_attr);
943 int (*modify_ah)(struct ib_ah *ah,
944 struct ib_ah_attr *ah_attr);
945 int (*query_ah)(struct ib_ah *ah,
946 struct ib_ah_attr *ah_attr);
947 int (*destroy_ah)(struct ib_ah *ah);
948 struct ib_srq * (*create_srq)(struct ib_pd *pd,
949 struct ib_srq_init_attr *srq_init_attr,
950 struct ib_udata *udata);
951 int (*modify_srq)(struct ib_srq *srq,
952 struct ib_srq_attr *srq_attr,
953 enum ib_srq_attr_mask srq_attr_mask,
954 struct ib_udata *udata);
955 int (*query_srq)(struct ib_srq *srq,
956 struct ib_srq_attr *srq_attr);
957 int (*destroy_srq)(struct ib_srq *srq);
958 int (*post_srq_recv)(struct ib_srq *srq,
959 struct ib_recv_wr *recv_wr,
960 struct ib_recv_wr **bad_recv_wr);
961 struct ib_qp * (*create_qp)(struct ib_pd *pd,
962 struct ib_qp_init_attr *qp_init_attr,
963 struct ib_udata *udata);
964 int (*modify_qp)(struct ib_qp *qp,
965 struct ib_qp_attr *qp_attr,
967 struct ib_udata *udata);
968 int (*query_qp)(struct ib_qp *qp,
969 struct ib_qp_attr *qp_attr,
971 struct ib_qp_init_attr *qp_init_attr);
972 int (*destroy_qp)(struct ib_qp *qp);
973 int (*post_send)(struct ib_qp *qp,
974 struct ib_send_wr *send_wr,
975 struct ib_send_wr **bad_send_wr);
976 int (*post_recv)(struct ib_qp *qp,
977 struct ib_recv_wr *recv_wr,
978 struct ib_recv_wr **bad_recv_wr);
979 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
980 struct ib_ucontext *context,
981 struct ib_udata *udata);
982 int (*destroy_cq)(struct ib_cq *cq);
983 int (*resize_cq)(struct ib_cq *cq, int cqe,
984 struct ib_udata *udata);
985 int (*poll_cq)(struct ib_cq *cq, int num_entries,
987 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
988 int (*req_notify_cq)(struct ib_cq *cq,
989 enum ib_cq_notify cq_notify);
990 int (*req_ncomp_notif)(struct ib_cq *cq,
992 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
993 int mr_access_flags);
994 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
995 struct ib_phys_buf *phys_buf_array,
999 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1000 struct ib_umem *region,
1001 int mr_access_flags,
1002 struct ib_udata *udata);
1003 int (*query_mr)(struct ib_mr *mr,
1004 struct ib_mr_attr *mr_attr);
1005 int (*dereg_mr)(struct ib_mr *mr);
1006 int (*rereg_phys_mr)(struct ib_mr *mr,
1009 struct ib_phys_buf *phys_buf_array,
1011 int mr_access_flags,
1013 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
1014 int (*bind_mw)(struct ib_qp *qp,
1016 struct ib_mw_bind *mw_bind);
1017 int (*dealloc_mw)(struct ib_mw *mw);
1018 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1019 int mr_access_flags,
1020 struct ib_fmr_attr *fmr_attr);
1021 int (*map_phys_fmr)(struct ib_fmr *fmr,
1022 u64 *page_list, int list_len,
1024 int (*unmap_fmr)(struct list_head *fmr_list);
1025 int (*dealloc_fmr)(struct ib_fmr *fmr);
1026 int (*attach_mcast)(struct ib_qp *qp,
1029 int (*detach_mcast)(struct ib_qp *qp,
1032 int (*process_mad)(struct ib_device *device,
1033 int process_mad_flags,
1035 struct ib_wc *in_wc,
1036 struct ib_grh *in_grh,
1037 struct ib_mad *in_mad,
1038 struct ib_mad *out_mad);
1040 struct ib_dma_mapping_ops *dma_ops;
1042 struct module *owner;
1043 struct class_device class_dev;
1044 struct kobject ports_parent;
1045 struct list_head port_list;
1048 IB_DEV_UNINITIALIZED,
1053 u64 uverbs_cmd_mask;
1064 void (*add) (struct ib_device *);
1065 void (*remove)(struct ib_device *);
1067 struct list_head list;
1070 struct ib_device *ib_alloc_device(size_t size);
1071 void ib_dealloc_device(struct ib_device *device);
1073 int ib_register_device (struct ib_device *device);
1074 void ib_unregister_device(struct ib_device *device);
1076 int ib_register_client (struct ib_client *client);
1077 void ib_unregister_client(struct ib_client *client);
1079 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1080 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1083 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1085 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1088 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1090 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1094 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1095 * contains all required attributes and no attributes not allowed for
1096 * the given QP state transition.
1097 * @cur_state: Current QP state
1098 * @next_state: Next QP state
1100 * @mask: Mask of supplied QP attributes
1102 * This function is a helper function that a low-level driver's
1103 * modify_qp method can use to validate the consumer's input. It
1104 * checks that cur_state and next_state are valid QP states, that a
1105 * transition from cur_state to next_state is allowed by the IB spec,
1106 * and that the attribute mask supplied is allowed for the transition.
1108 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1109 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1111 int ib_register_event_handler (struct ib_event_handler *event_handler);
1112 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1113 void ib_dispatch_event(struct ib_event *event);
1115 int ib_query_device(struct ib_device *device,
1116 struct ib_device_attr *device_attr);
1118 int ib_query_port(struct ib_device *device,
1119 u8 port_num, struct ib_port_attr *port_attr);
1121 int ib_query_gid(struct ib_device *device,
1122 u8 port_num, int index, union ib_gid *gid);
1124 int ib_query_pkey(struct ib_device *device,
1125 u8 port_num, u16 index, u16 *pkey);
1127 int ib_modify_device(struct ib_device *device,
1128 int device_modify_mask,
1129 struct ib_device_modify *device_modify);
1131 int ib_modify_port(struct ib_device *device,
1132 u8 port_num, int port_modify_mask,
1133 struct ib_port_modify *port_modify);
1136 * ib_alloc_pd - Allocates an unused protection domain.
1137 * @device: The device on which to allocate the protection domain.
1139 * A protection domain object provides an association between QPs, shared
1140 * receive queues, address handles, memory regions, and memory windows.
1142 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1145 * ib_dealloc_pd - Deallocates a protection domain.
1146 * @pd: The protection domain to deallocate.
1148 int ib_dealloc_pd(struct ib_pd *pd);
1151 * ib_create_ah - Creates an address handle for the given address vector.
1152 * @pd: The protection domain associated with the address handle.
1153 * @ah_attr: The attributes of the address vector.
1155 * The address handle is used to reference a local or global destination
1156 * in all UD QP post sends.
1158 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1161 * ib_init_ah_from_wc - Initializes address handle attributes from a
1163 * @device: Device on which the received message arrived.
1164 * @port_num: Port on which the received message arrived.
1165 * @wc: Work completion associated with the received message.
1166 * @grh: References the received global route header. This parameter is
1167 * ignored unless the work completion indicates that the GRH is valid.
1168 * @ah_attr: Returned attributes that can be used when creating an address
1169 * handle for replying to the message.
1171 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1172 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1175 * ib_create_ah_from_wc - Creates an address handle associated with the
1176 * sender of the specified work completion.
1177 * @pd: The protection domain associated with the address handle.
1178 * @wc: Work completion information associated with a received message.
1179 * @grh: References the received global route header. This parameter is
1180 * ignored unless the work completion indicates that the GRH is valid.
1181 * @port_num: The outbound port number to associate with the address.
1183 * The address handle is used to reference a local or global destination
1184 * in all UD QP post sends.
1186 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1187 struct ib_grh *grh, u8 port_num);
1190 * ib_modify_ah - Modifies the address vector associated with an address
1192 * @ah: The address handle to modify.
1193 * @ah_attr: The new address vector attributes to associate with the
1196 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1199 * ib_query_ah - Queries the address vector associated with an address
1201 * @ah: The address handle to query.
1202 * @ah_attr: The address vector attributes associated with the address
1205 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1208 * ib_destroy_ah - Destroys an address handle.
1209 * @ah: The address handle to destroy.
1211 int ib_destroy_ah(struct ib_ah *ah);
1214 * ib_create_srq - Creates a SRQ associated with the specified protection
1216 * @pd: The protection domain associated with the SRQ.
1217 * @srq_init_attr: A list of initial attributes required to create the
1218 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1219 * the actual capabilities of the created SRQ.
1221 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1222 * requested size of the SRQ, and set to the actual values allocated
1223 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1224 * will always be at least as large as the requested values.
1226 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1227 struct ib_srq_init_attr *srq_init_attr);
1230 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1231 * @srq: The SRQ to modify.
1232 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1233 * the current values of selected SRQ attributes are returned.
1234 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1235 * are being modified.
1237 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1238 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1239 * the number of receives queued drops below the limit.
1241 int ib_modify_srq(struct ib_srq *srq,
1242 struct ib_srq_attr *srq_attr,
1243 enum ib_srq_attr_mask srq_attr_mask);
1246 * ib_query_srq - Returns the attribute list and current values for the
1248 * @srq: The SRQ to query.
1249 * @srq_attr: The attributes of the specified SRQ.
1251 int ib_query_srq(struct ib_srq *srq,
1252 struct ib_srq_attr *srq_attr);
1255 * ib_destroy_srq - Destroys the specified SRQ.
1256 * @srq: The SRQ to destroy.
1258 int ib_destroy_srq(struct ib_srq *srq);
1261 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1262 * @srq: The SRQ to post the work request on.
1263 * @recv_wr: A list of work requests to post on the receive queue.
1264 * @bad_recv_wr: On an immediate failure, this parameter will reference
1265 * the work request that failed to be posted on the QP.
1267 static inline int ib_post_srq_recv(struct ib_srq *srq,
1268 struct ib_recv_wr *recv_wr,
1269 struct ib_recv_wr **bad_recv_wr)
1271 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1275 * ib_create_qp - Creates a QP associated with the specified protection
1277 * @pd: The protection domain associated with the QP.
1278 * @qp_init_attr: A list of initial attributes required to create the
1279 * QP. If QP creation succeeds, then the attributes are updated to
1280 * the actual capabilities of the created QP.
1282 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1283 struct ib_qp_init_attr *qp_init_attr);
1286 * ib_modify_qp - Modifies the attributes for the specified QP and then
1287 * transitions the QP to the given state.
1288 * @qp: The QP to modify.
1289 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1290 * the current values of selected QP attributes are returned.
1291 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1292 * are being modified.
1294 int ib_modify_qp(struct ib_qp *qp,
1295 struct ib_qp_attr *qp_attr,
1299 * ib_query_qp - Returns the attribute list and current values for the
1301 * @qp: The QP to query.
1302 * @qp_attr: The attributes of the specified QP.
1303 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1304 * @qp_init_attr: Additional attributes of the selected QP.
1306 * The qp_attr_mask may be used to limit the query to gathering only the
1307 * selected attributes.
1309 int ib_query_qp(struct ib_qp *qp,
1310 struct ib_qp_attr *qp_attr,
1312 struct ib_qp_init_attr *qp_init_attr);
1315 * ib_destroy_qp - Destroys the specified QP.
1316 * @qp: The QP to destroy.
1318 int ib_destroy_qp(struct ib_qp *qp);
1321 * ib_post_send - Posts a list of work requests to the send queue of
1323 * @qp: The QP to post the work request on.
1324 * @send_wr: A list of work requests to post on the send queue.
1325 * @bad_send_wr: On an immediate failure, this parameter will reference
1326 * the work request that failed to be posted on the QP.
1328 static inline int ib_post_send(struct ib_qp *qp,
1329 struct ib_send_wr *send_wr,
1330 struct ib_send_wr **bad_send_wr)
1332 return qp->device->post_send(qp, send_wr, bad_send_wr);
1336 * ib_post_recv - Posts a list of work requests to the receive queue of
1338 * @qp: The QP to post the work request on.
1339 * @recv_wr: A list of work requests to post on the receive queue.
1340 * @bad_recv_wr: On an immediate failure, this parameter will reference
1341 * the work request that failed to be posted on the QP.
1343 static inline int ib_post_recv(struct ib_qp *qp,
1344 struct ib_recv_wr *recv_wr,
1345 struct ib_recv_wr **bad_recv_wr)
1347 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1351 * ib_create_cq - Creates a CQ on the specified device.
1352 * @device: The device on which to create the CQ.
1353 * @comp_handler: A user-specified callback that is invoked when a
1354 * completion event occurs on the CQ.
1355 * @event_handler: A user-specified callback that is invoked when an
1356 * asynchronous event not associated with a completion occurs on the CQ.
1357 * @cq_context: Context associated with the CQ returned to the user via
1358 * the associated completion and event handlers.
1359 * @cqe: The minimum size of the CQ.
1361 * Users can examine the cq structure to determine the actual CQ size.
1363 struct ib_cq *ib_create_cq(struct ib_device *device,
1364 ib_comp_handler comp_handler,
1365 void (*event_handler)(struct ib_event *, void *),
1366 void *cq_context, int cqe);
1369 * ib_resize_cq - Modifies the capacity of the CQ.
1370 * @cq: The CQ to resize.
1371 * @cqe: The minimum size of the CQ.
1373 * Users can examine the cq structure to determine the actual CQ size.
1375 int ib_resize_cq(struct ib_cq *cq, int cqe);
1378 * ib_destroy_cq - Destroys the specified CQ.
1379 * @cq: The CQ to destroy.
1381 int ib_destroy_cq(struct ib_cq *cq);
1384 * ib_poll_cq - poll a CQ for completion(s)
1385 * @cq:the CQ being polled
1386 * @num_entries:maximum number of completions to return
1387 * @wc:array of at least @num_entries &struct ib_wc where completions
1390 * Poll a CQ for (possibly multiple) completions. If the return value
1391 * is < 0, an error occurred. If the return value is >= 0, it is the
1392 * number of completions returned. If the return value is
1393 * non-negative and < num_entries, then the CQ was emptied.
1395 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1398 return cq->device->poll_cq(cq, num_entries, wc);
1402 * ib_peek_cq - Returns the number of unreaped completions currently
1403 * on the specified CQ.
1404 * @cq: The CQ to peek.
1405 * @wc_cnt: A minimum number of unreaped completions to check for.
1407 * If the number of unreaped completions is greater than or equal to wc_cnt,
1408 * this function returns wc_cnt, otherwise, it returns the actual number of
1409 * unreaped completions.
1411 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1414 * ib_req_notify_cq - Request completion notification on a CQ.
1415 * @cq: The CQ to generate an event for.
1416 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1417 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1418 * notification will occur on the next completion.
1420 static inline int ib_req_notify_cq(struct ib_cq *cq,
1421 enum ib_cq_notify cq_notify)
1423 return cq->device->req_notify_cq(cq, cq_notify);
1427 * ib_req_ncomp_notif - Request completion notification when there are
1428 * at least the specified number of unreaped completions on the CQ.
1429 * @cq: The CQ to generate an event for.
1430 * @wc_cnt: The number of unreaped completions that should be on the
1431 * CQ before an event is generated.
1433 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1435 return cq->device->req_ncomp_notif ?
1436 cq->device->req_ncomp_notif(cq, wc_cnt) :
1441 * ib_get_dma_mr - Returns a memory region for system memory that is
1443 * @pd: The protection domain associated with the memory region.
1444 * @mr_access_flags: Specifies the memory access rights.
1446 * Note that the ib_dma_*() functions defined below must be used
1447 * to create/destroy addresses used with the Lkey or Rkey returned
1448 * by ib_get_dma_mr().
1450 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1453 * ib_dma_mapping_error - check a DMA addr for error
1454 * @dev: The device for which the dma_addr was created
1455 * @dma_addr: The DMA address to check
1457 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
1460 return dev->dma_ops->mapping_error(dev, dma_addr);
1461 return dma_mapping_error(dma_addr);
1465 * ib_dma_map_single - Map a kernel virtual address to DMA address
1466 * @dev: The device for which the dma_addr is to be created
1467 * @cpu_addr: The kernel virtual address
1468 * @size: The size of the region in bytes
1469 * @direction: The direction of the DMA
1471 static inline u64 ib_dma_map_single(struct ib_device *dev,
1472 void *cpu_addr, size_t size,
1473 enum dma_data_direction direction)
1476 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
1477 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
1481 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1482 * @dev: The device for which the DMA address was created
1483 * @addr: The DMA address
1484 * @size: The size of the region in bytes
1485 * @direction: The direction of the DMA
1487 static inline void ib_dma_unmap_single(struct ib_device *dev,
1488 u64 addr, size_t size,
1489 enum dma_data_direction direction)
1492 dev->dma_ops->unmap_single(dev, addr, size, direction);
1494 dma_unmap_single(dev->dma_device, addr, size, direction);
1498 * ib_dma_map_page - Map a physical page to DMA address
1499 * @dev: The device for which the dma_addr is to be created
1500 * @page: The page to be mapped
1501 * @offset: The offset within the page
1502 * @size: The size of the region in bytes
1503 * @direction: The direction of the DMA
1505 static inline u64 ib_dma_map_page(struct ib_device *dev,
1507 unsigned long offset,
1509 enum dma_data_direction direction)
1512 return dev->dma_ops->map_page(dev, page, offset, size, direction);
1513 return dma_map_page(dev->dma_device, page, offset, size, direction);
1517 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1518 * @dev: The device for which the DMA address was created
1519 * @addr: The DMA address
1520 * @size: The size of the region in bytes
1521 * @direction: The direction of the DMA
1523 static inline void ib_dma_unmap_page(struct ib_device *dev,
1524 u64 addr, size_t size,
1525 enum dma_data_direction direction)
1528 dev->dma_ops->unmap_page(dev, addr, size, direction);
1530 dma_unmap_page(dev->dma_device, addr, size, direction);
1534 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
1535 * @dev: The device for which the DMA addresses are to be created
1536 * @sg: The array of scatter/gather entries
1537 * @nents: The number of scatter/gather entries
1538 * @direction: The direction of the DMA
1540 static inline int ib_dma_map_sg(struct ib_device *dev,
1541 struct scatterlist *sg, int nents,
1542 enum dma_data_direction direction)
1545 return dev->dma_ops->map_sg(dev, sg, nents, direction);
1546 return dma_map_sg(dev->dma_device, sg, nents, direction);
1550 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
1551 * @dev: The device for which the DMA addresses were created
1552 * @sg: The array of scatter/gather entries
1553 * @nents: The number of scatter/gather entries
1554 * @direction: The direction of the DMA
1556 static inline void ib_dma_unmap_sg(struct ib_device *dev,
1557 struct scatterlist *sg, int nents,
1558 enum dma_data_direction direction)
1561 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
1563 dma_unmap_sg(dev->dma_device, sg, nents, direction);
1567 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
1568 * @dev: The device for which the DMA addresses were created
1569 * @sg: The scatter/gather entry
1571 static inline u64 ib_sg_dma_address(struct ib_device *dev,
1572 struct scatterlist *sg)
1575 return dev->dma_ops->dma_address(dev, sg);
1576 return sg_dma_address(sg);
1580 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
1581 * @dev: The device for which the DMA addresses were created
1582 * @sg: The scatter/gather entry
1584 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
1585 struct scatterlist *sg)
1588 return dev->dma_ops->dma_len(dev, sg);
1589 return sg_dma_len(sg);
1593 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
1594 * @dev: The device for which the DMA address was created
1595 * @addr: The DMA address
1596 * @size: The size of the region in bytes
1597 * @dir: The direction of the DMA
1599 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
1602 enum dma_data_direction dir)
1605 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
1607 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
1611 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
1612 * @dev: The device for which the DMA address was created
1613 * @addr: The DMA address
1614 * @size: The size of the region in bytes
1615 * @dir: The direction of the DMA
1617 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
1620 enum dma_data_direction dir)
1623 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
1625 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
1629 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
1630 * @dev: The device for which the DMA address is requested
1631 * @size: The size of the region to allocate in bytes
1632 * @dma_handle: A pointer for returning the DMA address of the region
1633 * @flag: memory allocator flags
1635 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
1641 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
1646 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
1647 *dma_handle = handle;
1653 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
1654 * @dev: The device for which the DMA addresses were allocated
1655 * @size: The size of the region
1656 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
1657 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
1659 static inline void ib_dma_free_coherent(struct ib_device *dev,
1660 size_t size, void *cpu_addr,
1664 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
1666 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
1670 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1672 * @pd: The protection domain associated assigned to the registered region.
1673 * @phys_buf_array: Specifies a list of physical buffers to use in the
1675 * @num_phys_buf: Specifies the size of the phys_buf_array.
1676 * @mr_access_flags: Specifies the memory access rights.
1677 * @iova_start: The offset of the region's starting I/O virtual address.
1679 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1680 struct ib_phys_buf *phys_buf_array,
1682 int mr_access_flags,
1686 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1687 * Conceptually, this call performs the functions deregister memory region
1688 * followed by register physical memory region. Where possible,
1689 * resources are reused instead of deallocated and reallocated.
1690 * @mr: The memory region to modify.
1691 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1692 * properties of the memory region are being modified.
1693 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1694 * the new protection domain to associated with the memory region,
1695 * otherwise, this parameter is ignored.
1696 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1697 * field specifies a list of physical buffers to use in the new
1698 * translation, otherwise, this parameter is ignored.
1699 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1700 * field specifies the size of the phys_buf_array, otherwise, this
1701 * parameter is ignored.
1702 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1703 * field specifies the new memory access rights, otherwise, this
1704 * parameter is ignored.
1705 * @iova_start: The offset of the region's starting I/O virtual address.
1707 int ib_rereg_phys_mr(struct ib_mr *mr,
1710 struct ib_phys_buf *phys_buf_array,
1712 int mr_access_flags,
1716 * ib_query_mr - Retrieves information about a specific memory region.
1717 * @mr: The memory region to retrieve information about.
1718 * @mr_attr: The attributes of the specified memory region.
1720 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1723 * ib_dereg_mr - Deregisters a memory region and removes it from the
1724 * HCA translation table.
1725 * @mr: The memory region to deregister.
1727 int ib_dereg_mr(struct ib_mr *mr);
1730 * ib_alloc_mw - Allocates a memory window.
1731 * @pd: The protection domain associated with the memory window.
1733 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1736 * ib_bind_mw - Posts a work request to the send queue of the specified
1737 * QP, which binds the memory window to the given address range and
1738 * remote access attributes.
1739 * @qp: QP to post the bind work request on.
1740 * @mw: The memory window to bind.
1741 * @mw_bind: Specifies information about the memory window, including
1742 * its address range, remote access rights, and associated memory region.
1744 static inline int ib_bind_mw(struct ib_qp *qp,
1746 struct ib_mw_bind *mw_bind)
1748 /* XXX reference counting in corresponding MR? */
1749 return mw->device->bind_mw ?
1750 mw->device->bind_mw(qp, mw, mw_bind) :
1755 * ib_dealloc_mw - Deallocates a memory window.
1756 * @mw: The memory window to deallocate.
1758 int ib_dealloc_mw(struct ib_mw *mw);
1761 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1762 * @pd: The protection domain associated with the unmapped region.
1763 * @mr_access_flags: Specifies the memory access rights.
1764 * @fmr_attr: Attributes of the unmapped region.
1766 * A fast memory region must be mapped before it can be used as part of
1769 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1770 int mr_access_flags,
1771 struct ib_fmr_attr *fmr_attr);
1774 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1775 * @fmr: The fast memory region to associate with the pages.
1776 * @page_list: An array of physical pages to map to the fast memory region.
1777 * @list_len: The number of pages in page_list.
1778 * @iova: The I/O virtual address to use with the mapped region.
1780 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1781 u64 *page_list, int list_len,
1784 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1788 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1789 * @fmr_list: A linked list of fast memory regions to unmap.
1791 int ib_unmap_fmr(struct list_head *fmr_list);
1794 * ib_dealloc_fmr - Deallocates a fast memory region.
1795 * @fmr: The fast memory region to deallocate.
1797 int ib_dealloc_fmr(struct ib_fmr *fmr);
1800 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1801 * @qp: QP to attach to the multicast group. The QP must be type
1803 * @gid: Multicast group GID.
1804 * @lid: Multicast group LID in host byte order.
1806 * In order to send and receive multicast packets, subnet
1807 * administration must have created the multicast group and configured
1808 * the fabric appropriately. The port associated with the specified
1809 * QP must also be a member of the multicast group.
1811 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1814 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1815 * @qp: QP to detach from the multicast group.
1816 * @gid: Multicast group GID.
1817 * @lid: Multicast group LID in host byte order.
1819 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1821 #endif /* IB_VERBS_H */