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, 2007 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>
48 #include <linux/kref.h>
49 #include <linux/list.h>
50 #include <linux/rwsem.h>
52 #include <asm/atomic.h>
53 #include <asm/scatterlist.h>
54 #include <asm/uaccess.h>
65 /* IB values map to NodeInfo:NodeType. */
72 enum rdma_transport_type {
77 enum rdma_transport_type
78 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
80 enum ib_device_cap_flags {
81 IB_DEVICE_RESIZE_MAX_WR = 1,
82 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
83 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
84 IB_DEVICE_RAW_MULTI = (1<<3),
85 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
86 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
87 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
88 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
89 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
90 IB_DEVICE_INIT_TYPE = (1<<9),
91 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
92 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
93 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
94 IB_DEVICE_SRQ_RESIZE = (1<<13),
95 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
96 IB_DEVICE_ZERO_STAG = (1<<15),
97 IB_DEVICE_SEND_W_INV = (1<<16),
98 IB_DEVICE_MEM_WINDOW = (1<<17)
107 struct ib_device_attr {
109 __be64 sys_image_guid;
117 int device_cap_flags;
127 int max_qp_init_rd_atom;
128 int max_ee_init_rd_atom;
129 enum ib_atomic_cap atomic_cap;
136 int max_mcast_qp_attach;
137 int max_total_mcast_qp_attach;
145 u8 local_ca_ack_delay;
156 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
159 case IB_MTU_256: return 256;
160 case IB_MTU_512: return 512;
161 case IB_MTU_1024: return 1024;
162 case IB_MTU_2048: return 2048;
163 case IB_MTU_4096: return 4096;
174 IB_PORT_ACTIVE_DEFER = 5
177 enum ib_port_cap_flags {
179 IB_PORT_NOTICE_SUP = 1 << 2,
180 IB_PORT_TRAP_SUP = 1 << 3,
181 IB_PORT_OPT_IPD_SUP = 1 << 4,
182 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
183 IB_PORT_SL_MAP_SUP = 1 << 6,
184 IB_PORT_MKEY_NVRAM = 1 << 7,
185 IB_PORT_PKEY_NVRAM = 1 << 8,
186 IB_PORT_LED_INFO_SUP = 1 << 9,
187 IB_PORT_SM_DISABLED = 1 << 10,
188 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
189 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
190 IB_PORT_CM_SUP = 1 << 16,
191 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
192 IB_PORT_REINIT_SUP = 1 << 18,
193 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
194 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
195 IB_PORT_DR_NOTICE_SUP = 1 << 21,
196 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
197 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
198 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
199 IB_PORT_CLIENT_REG_SUP = 1 << 25
209 static inline int ib_width_enum_to_int(enum ib_port_width width)
212 case IB_WIDTH_1X: return 1;
213 case IB_WIDTH_4X: return 4;
214 case IB_WIDTH_8X: return 8;
215 case IB_WIDTH_12X: return 12;
220 struct ib_port_attr {
221 enum ib_port_state state;
223 enum ib_mtu active_mtu;
242 enum ib_device_modify_flags {
243 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
244 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
247 struct ib_device_modify {
252 enum ib_port_modify_flags {
253 IB_PORT_SHUTDOWN = 1,
254 IB_PORT_INIT_TYPE = (1<<2),
255 IB_PORT_RESET_QKEY_CNTR = (1<<3)
258 struct ib_port_modify {
259 u32 set_port_cap_mask;
260 u32 clr_port_cap_mask;
268 IB_EVENT_QP_ACCESS_ERR,
272 IB_EVENT_PATH_MIG_ERR,
273 IB_EVENT_DEVICE_FATAL,
274 IB_EVENT_PORT_ACTIVE,
277 IB_EVENT_PKEY_CHANGE,
280 IB_EVENT_SRQ_LIMIT_REACHED,
281 IB_EVENT_QP_LAST_WQE_REACHED,
282 IB_EVENT_CLIENT_REREGISTER
286 struct ib_device *device;
293 enum ib_event_type event;
296 struct ib_event_handler {
297 struct ib_device *device;
298 void (*handler)(struct ib_event_handler *, struct ib_event *);
299 struct list_head list;
302 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
304 (_ptr)->device = _device; \
305 (_ptr)->handler = _handler; \
306 INIT_LIST_HEAD(&(_ptr)->list); \
309 struct ib_global_route {
318 __be32 version_tclass_flow;
327 IB_MULTICAST_QPN = 0xffffff
330 #define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
337 IB_RATE_PORT_CURRENT = 0,
338 IB_RATE_2_5_GBPS = 2,
346 IB_RATE_120_GBPS = 10
350 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
351 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
352 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
353 * @rate: rate to convert.
355 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
358 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
360 * @mult: multiple to convert.
362 enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
365 struct ib_global_route grh;
378 IB_WC_LOC_EEC_OP_ERR,
383 IB_WC_LOC_ACCESS_ERR,
384 IB_WC_REM_INV_REQ_ERR,
385 IB_WC_REM_ACCESS_ERR,
388 IB_WC_RNR_RETRY_EXC_ERR,
389 IB_WC_LOC_RDD_VIOL_ERR,
390 IB_WC_REM_INV_RD_REQ_ERR,
393 IB_WC_INV_EEC_STATE_ERR,
395 IB_WC_RESP_TIMEOUT_ERR,
407 * Set value of IB_WC_RECV so consumers can test if a completion is a
408 * receive by testing (opcode & IB_WC_RECV).
411 IB_WC_RECV_RDMA_WITH_IMM
416 IB_WC_WITH_IMM = (1<<1)
421 enum ib_wc_status status;
422 enum ib_wc_opcode opcode;
433 u8 port_num; /* valid only for DR SMPs on switches */
436 enum ib_cq_notify_flags {
437 IB_CQ_SOLICITED = 1 << 0,
438 IB_CQ_NEXT_COMP = 1 << 1,
439 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
440 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
443 enum ib_srq_attr_mask {
444 IB_SRQ_MAX_WR = 1 << 0,
445 IB_SRQ_LIMIT = 1 << 1,
454 struct ib_srq_init_attr {
455 void (*event_handler)(struct ib_event *, void *);
457 struct ib_srq_attr attr;
475 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
476 * here (and in that order) since the MAD layer uses them as
477 * indices into a 2-entry table.
489 struct ib_qp_init_attr {
490 void (*event_handler)(struct ib_event *, void *);
492 struct ib_cq *send_cq;
493 struct ib_cq *recv_cq;
495 struct ib_qp_cap cap;
496 enum ib_sig_type sq_sig_type;
497 enum ib_qp_type qp_type;
498 u8 port_num; /* special QP types only */
501 enum ib_rnr_timeout {
502 IB_RNR_TIMER_655_36 = 0,
503 IB_RNR_TIMER_000_01 = 1,
504 IB_RNR_TIMER_000_02 = 2,
505 IB_RNR_TIMER_000_03 = 3,
506 IB_RNR_TIMER_000_04 = 4,
507 IB_RNR_TIMER_000_06 = 5,
508 IB_RNR_TIMER_000_08 = 6,
509 IB_RNR_TIMER_000_12 = 7,
510 IB_RNR_TIMER_000_16 = 8,
511 IB_RNR_TIMER_000_24 = 9,
512 IB_RNR_TIMER_000_32 = 10,
513 IB_RNR_TIMER_000_48 = 11,
514 IB_RNR_TIMER_000_64 = 12,
515 IB_RNR_TIMER_000_96 = 13,
516 IB_RNR_TIMER_001_28 = 14,
517 IB_RNR_TIMER_001_92 = 15,
518 IB_RNR_TIMER_002_56 = 16,
519 IB_RNR_TIMER_003_84 = 17,
520 IB_RNR_TIMER_005_12 = 18,
521 IB_RNR_TIMER_007_68 = 19,
522 IB_RNR_TIMER_010_24 = 20,
523 IB_RNR_TIMER_015_36 = 21,
524 IB_RNR_TIMER_020_48 = 22,
525 IB_RNR_TIMER_030_72 = 23,
526 IB_RNR_TIMER_040_96 = 24,
527 IB_RNR_TIMER_061_44 = 25,
528 IB_RNR_TIMER_081_92 = 26,
529 IB_RNR_TIMER_122_88 = 27,
530 IB_RNR_TIMER_163_84 = 28,
531 IB_RNR_TIMER_245_76 = 29,
532 IB_RNR_TIMER_327_68 = 30,
533 IB_RNR_TIMER_491_52 = 31
536 enum ib_qp_attr_mask {
538 IB_QP_CUR_STATE = (1<<1),
539 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
540 IB_QP_ACCESS_FLAGS = (1<<3),
541 IB_QP_PKEY_INDEX = (1<<4),
545 IB_QP_PATH_MTU = (1<<8),
546 IB_QP_TIMEOUT = (1<<9),
547 IB_QP_RETRY_CNT = (1<<10),
548 IB_QP_RNR_RETRY = (1<<11),
549 IB_QP_RQ_PSN = (1<<12),
550 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
551 IB_QP_ALT_PATH = (1<<14),
552 IB_QP_MIN_RNR_TIMER = (1<<15),
553 IB_QP_SQ_PSN = (1<<16),
554 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
555 IB_QP_PATH_MIG_STATE = (1<<18),
557 IB_QP_DEST_QPN = (1<<20)
577 enum ib_qp_state qp_state;
578 enum ib_qp_state cur_qp_state;
579 enum ib_mtu path_mtu;
580 enum ib_mig_state path_mig_state;
586 struct ib_qp_cap cap;
587 struct ib_ah_attr ah_attr;
588 struct ib_ah_attr alt_ah_attr;
591 u8 en_sqd_async_notify;
594 u8 max_dest_rd_atomic;
606 IB_WR_RDMA_WRITE_WITH_IMM,
610 IB_WR_ATOMIC_CMP_AND_SWP,
611 IB_WR_ATOMIC_FETCH_AND_ADD
616 IB_SEND_SIGNALED = (1<<1),
617 IB_SEND_SOLICITED = (1<<2),
618 IB_SEND_INLINE = (1<<3)
628 struct ib_send_wr *next;
630 struct ib_sge *sg_list;
632 enum ib_wr_opcode opcode;
650 u16 pkey_index; /* valid for GSI only */
651 u8 port_num; /* valid for DR SMPs on switch only */
657 struct ib_recv_wr *next;
659 struct ib_sge *sg_list;
663 enum ib_access_flags {
664 IB_ACCESS_LOCAL_WRITE = 1,
665 IB_ACCESS_REMOTE_WRITE = (1<<1),
666 IB_ACCESS_REMOTE_READ = (1<<2),
667 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
668 IB_ACCESS_MW_BIND = (1<<4)
678 u64 device_virt_addr;
685 enum ib_mr_rereg_flags {
686 IB_MR_REREG_TRANS = 1,
687 IB_MR_REREG_PD = (1<<1),
688 IB_MR_REREG_ACCESS = (1<<2)
707 struct ib_device *device;
708 struct list_head pd_list;
709 struct list_head mr_list;
710 struct list_head mw_list;
711 struct list_head cq_list;
712 struct list_head qp_list;
713 struct list_head srq_list;
714 struct list_head ah_list;
719 u64 user_handle; /* handle given to us by userspace */
720 struct ib_ucontext *context; /* associated user context */
721 void *object; /* containing object */
722 struct list_head list; /* link to context's list */
723 u32 id; /* index into kernel idr */
725 struct rw_semaphore mutex; /* protects .live */
736 #define IB_UMEM_MAX_PAGE_CHUNK \
737 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
738 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
739 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
742 struct ib_device *device;
743 struct ib_uobject *uobject;
744 atomic_t usecnt; /* count all resources */
748 struct ib_device *device;
750 struct ib_uobject *uobject;
753 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
756 struct ib_device *device;
757 struct ib_uobject *uobject;
758 ib_comp_handler comp_handler;
759 void (*event_handler)(struct ib_event *, void *);
762 atomic_t usecnt; /* count number of work queues */
766 struct ib_device *device;
768 struct ib_uobject *uobject;
769 void (*event_handler)(struct ib_event *, void *);
775 struct ib_device *device;
777 struct ib_cq *send_cq;
778 struct ib_cq *recv_cq;
780 struct ib_uobject *uobject;
781 void (*event_handler)(struct ib_event *, void *);
784 enum ib_qp_type qp_type;
788 struct ib_device *device;
790 struct ib_uobject *uobject;
793 atomic_t usecnt; /* count number of MWs */
797 struct ib_device *device;
799 struct ib_uobject *uobject;
804 struct ib_device *device;
806 struct list_head list;
814 enum ib_process_mad_flags {
815 IB_MAD_IGNORE_MKEY = 1,
816 IB_MAD_IGNORE_BKEY = 2,
817 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
821 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
822 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
823 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
824 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
827 #define IB_DEVICE_NAME_MAX 64
831 struct ib_event_handler event_handler;
832 struct ib_pkey_cache **pkey_cache;
833 struct ib_gid_cache **gid_cache;
837 struct ib_dma_mapping_ops {
838 int (*mapping_error)(struct ib_device *dev,
840 u64 (*map_single)(struct ib_device *dev,
841 void *ptr, size_t size,
842 enum dma_data_direction direction);
843 void (*unmap_single)(struct ib_device *dev,
844 u64 addr, size_t size,
845 enum dma_data_direction direction);
846 u64 (*map_page)(struct ib_device *dev,
847 struct page *page, unsigned long offset,
849 enum dma_data_direction direction);
850 void (*unmap_page)(struct ib_device *dev,
851 u64 addr, size_t size,
852 enum dma_data_direction direction);
853 int (*map_sg)(struct ib_device *dev,
854 struct scatterlist *sg, int nents,
855 enum dma_data_direction direction);
856 void (*unmap_sg)(struct ib_device *dev,
857 struct scatterlist *sg, int nents,
858 enum dma_data_direction direction);
859 u64 (*dma_address)(struct ib_device *dev,
860 struct scatterlist *sg);
861 unsigned int (*dma_len)(struct ib_device *dev,
862 struct scatterlist *sg);
863 void (*sync_single_for_cpu)(struct ib_device *dev,
866 enum dma_data_direction dir);
867 void (*sync_single_for_device)(struct ib_device *dev,
870 enum dma_data_direction dir);
871 void *(*alloc_coherent)(struct ib_device *dev,
875 void (*free_coherent)(struct ib_device *dev,
876 size_t size, void *cpu_addr,
883 struct device *dma_device;
885 char name[IB_DEVICE_NAME_MAX];
887 struct list_head event_handler_list;
888 spinlock_t event_handler_lock;
890 struct list_head core_list;
891 struct list_head client_data_list;
892 spinlock_t client_data_lock;
894 struct ib_cache cache;
900 int num_comp_vectors;
902 struct iw_cm_verbs *iwcm;
904 int (*query_device)(struct ib_device *device,
905 struct ib_device_attr *device_attr);
906 int (*query_port)(struct ib_device *device,
908 struct ib_port_attr *port_attr);
909 int (*query_gid)(struct ib_device *device,
910 u8 port_num, int index,
912 int (*query_pkey)(struct ib_device *device,
913 u8 port_num, u16 index, u16 *pkey);
914 int (*modify_device)(struct ib_device *device,
915 int device_modify_mask,
916 struct ib_device_modify *device_modify);
917 int (*modify_port)(struct ib_device *device,
918 u8 port_num, int port_modify_mask,
919 struct ib_port_modify *port_modify);
920 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
921 struct ib_udata *udata);
922 int (*dealloc_ucontext)(struct ib_ucontext *context);
923 int (*mmap)(struct ib_ucontext *context,
924 struct vm_area_struct *vma);
925 struct ib_pd * (*alloc_pd)(struct ib_device *device,
926 struct ib_ucontext *context,
927 struct ib_udata *udata);
928 int (*dealloc_pd)(struct ib_pd *pd);
929 struct ib_ah * (*create_ah)(struct ib_pd *pd,
930 struct ib_ah_attr *ah_attr);
931 int (*modify_ah)(struct ib_ah *ah,
932 struct ib_ah_attr *ah_attr);
933 int (*query_ah)(struct ib_ah *ah,
934 struct ib_ah_attr *ah_attr);
935 int (*destroy_ah)(struct ib_ah *ah);
936 struct ib_srq * (*create_srq)(struct ib_pd *pd,
937 struct ib_srq_init_attr *srq_init_attr,
938 struct ib_udata *udata);
939 int (*modify_srq)(struct ib_srq *srq,
940 struct ib_srq_attr *srq_attr,
941 enum ib_srq_attr_mask srq_attr_mask,
942 struct ib_udata *udata);
943 int (*query_srq)(struct ib_srq *srq,
944 struct ib_srq_attr *srq_attr);
945 int (*destroy_srq)(struct ib_srq *srq);
946 int (*post_srq_recv)(struct ib_srq *srq,
947 struct ib_recv_wr *recv_wr,
948 struct ib_recv_wr **bad_recv_wr);
949 struct ib_qp * (*create_qp)(struct ib_pd *pd,
950 struct ib_qp_init_attr *qp_init_attr,
951 struct ib_udata *udata);
952 int (*modify_qp)(struct ib_qp *qp,
953 struct ib_qp_attr *qp_attr,
955 struct ib_udata *udata);
956 int (*query_qp)(struct ib_qp *qp,
957 struct ib_qp_attr *qp_attr,
959 struct ib_qp_init_attr *qp_init_attr);
960 int (*destroy_qp)(struct ib_qp *qp);
961 int (*post_send)(struct ib_qp *qp,
962 struct ib_send_wr *send_wr,
963 struct ib_send_wr **bad_send_wr);
964 int (*post_recv)(struct ib_qp *qp,
965 struct ib_recv_wr *recv_wr,
966 struct ib_recv_wr **bad_recv_wr);
967 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
969 struct ib_ucontext *context,
970 struct ib_udata *udata);
971 int (*destroy_cq)(struct ib_cq *cq);
972 int (*resize_cq)(struct ib_cq *cq, int cqe,
973 struct ib_udata *udata);
974 int (*poll_cq)(struct ib_cq *cq, int num_entries,
976 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
977 int (*req_notify_cq)(struct ib_cq *cq,
978 enum ib_cq_notify_flags flags);
979 int (*req_ncomp_notif)(struct ib_cq *cq,
981 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
982 int mr_access_flags);
983 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
984 struct ib_phys_buf *phys_buf_array,
988 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
989 u64 start, u64 length,
992 struct ib_udata *udata);
993 int (*query_mr)(struct ib_mr *mr,
994 struct ib_mr_attr *mr_attr);
995 int (*dereg_mr)(struct ib_mr *mr);
996 int (*rereg_phys_mr)(struct ib_mr *mr,
999 struct ib_phys_buf *phys_buf_array,
1001 int mr_access_flags,
1003 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
1004 int (*bind_mw)(struct ib_qp *qp,
1006 struct ib_mw_bind *mw_bind);
1007 int (*dealloc_mw)(struct ib_mw *mw);
1008 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1009 int mr_access_flags,
1010 struct ib_fmr_attr *fmr_attr);
1011 int (*map_phys_fmr)(struct ib_fmr *fmr,
1012 u64 *page_list, int list_len,
1014 int (*unmap_fmr)(struct list_head *fmr_list);
1015 int (*dealloc_fmr)(struct ib_fmr *fmr);
1016 int (*attach_mcast)(struct ib_qp *qp,
1019 int (*detach_mcast)(struct ib_qp *qp,
1022 int (*process_mad)(struct ib_device *device,
1023 int process_mad_flags,
1025 struct ib_wc *in_wc,
1026 struct ib_grh *in_grh,
1027 struct ib_mad *in_mad,
1028 struct ib_mad *out_mad);
1030 struct ib_dma_mapping_ops *dma_ops;
1032 struct module *owner;
1033 struct class_device class_dev;
1034 struct kobject ports_parent;
1035 struct list_head port_list;
1038 IB_DEV_UNINITIALIZED,
1043 u64 uverbs_cmd_mask;
1054 void (*add) (struct ib_device *);
1055 void (*remove)(struct ib_device *);
1057 struct list_head list;
1060 struct ib_device *ib_alloc_device(size_t size);
1061 void ib_dealloc_device(struct ib_device *device);
1063 int ib_register_device (struct ib_device *device);
1064 void ib_unregister_device(struct ib_device *device);
1066 int ib_register_client (struct ib_client *client);
1067 void ib_unregister_client(struct ib_client *client);
1069 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1070 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1073 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1075 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1078 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1080 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1084 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1085 * contains all required attributes and no attributes not allowed for
1086 * the given QP state transition.
1087 * @cur_state: Current QP state
1088 * @next_state: Next QP state
1090 * @mask: Mask of supplied QP attributes
1092 * This function is a helper function that a low-level driver's
1093 * modify_qp method can use to validate the consumer's input. It
1094 * checks that cur_state and next_state are valid QP states, that a
1095 * transition from cur_state to next_state is allowed by the IB spec,
1096 * and that the attribute mask supplied is allowed for the transition.
1098 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1099 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1101 int ib_register_event_handler (struct ib_event_handler *event_handler);
1102 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1103 void ib_dispatch_event(struct ib_event *event);
1105 int ib_query_device(struct ib_device *device,
1106 struct ib_device_attr *device_attr);
1108 int ib_query_port(struct ib_device *device,
1109 u8 port_num, struct ib_port_attr *port_attr);
1111 int ib_query_gid(struct ib_device *device,
1112 u8 port_num, int index, union ib_gid *gid);
1114 int ib_query_pkey(struct ib_device *device,
1115 u8 port_num, u16 index, u16 *pkey);
1117 int ib_modify_device(struct ib_device *device,
1118 int device_modify_mask,
1119 struct ib_device_modify *device_modify);
1121 int ib_modify_port(struct ib_device *device,
1122 u8 port_num, int port_modify_mask,
1123 struct ib_port_modify *port_modify);
1125 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1126 u8 *port_num, u16 *index);
1128 int ib_find_pkey(struct ib_device *device,
1129 u8 port_num, u16 pkey, u16 *index);
1132 * ib_alloc_pd - Allocates an unused protection domain.
1133 * @device: The device on which to allocate the protection domain.
1135 * A protection domain object provides an association between QPs, shared
1136 * receive queues, address handles, memory regions, and memory windows.
1138 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1141 * ib_dealloc_pd - Deallocates a protection domain.
1142 * @pd: The protection domain to deallocate.
1144 int ib_dealloc_pd(struct ib_pd *pd);
1147 * ib_create_ah - Creates an address handle for the given address vector.
1148 * @pd: The protection domain associated with the address handle.
1149 * @ah_attr: The attributes of the address vector.
1151 * The address handle is used to reference a local or global destination
1152 * in all UD QP post sends.
1154 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1157 * ib_init_ah_from_wc - Initializes address handle attributes from a
1159 * @device: Device on which the received message arrived.
1160 * @port_num: Port on which the received message arrived.
1161 * @wc: Work completion associated with the received message.
1162 * @grh: References the received global route header. This parameter is
1163 * ignored unless the work completion indicates that the GRH is valid.
1164 * @ah_attr: Returned attributes that can be used when creating an address
1165 * handle for replying to the message.
1167 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1168 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1171 * ib_create_ah_from_wc - Creates an address handle associated with the
1172 * sender of the specified work completion.
1173 * @pd: The protection domain associated with the address handle.
1174 * @wc: Work completion information associated with a received message.
1175 * @grh: References the received global route header. This parameter is
1176 * ignored unless the work completion indicates that the GRH is valid.
1177 * @port_num: The outbound port number to associate with the address.
1179 * The address handle is used to reference a local or global destination
1180 * in all UD QP post sends.
1182 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1183 struct ib_grh *grh, u8 port_num);
1186 * ib_modify_ah - Modifies the address vector associated with an address
1188 * @ah: The address handle to modify.
1189 * @ah_attr: The new address vector attributes to associate with the
1192 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1195 * ib_query_ah - Queries the address vector associated with an address
1197 * @ah: The address handle to query.
1198 * @ah_attr: The address vector attributes associated with the address
1201 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1204 * ib_destroy_ah - Destroys an address handle.
1205 * @ah: The address handle to destroy.
1207 int ib_destroy_ah(struct ib_ah *ah);
1210 * ib_create_srq - Creates a SRQ associated with the specified protection
1212 * @pd: The protection domain associated with the SRQ.
1213 * @srq_init_attr: A list of initial attributes required to create the
1214 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1215 * the actual capabilities of the created SRQ.
1217 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1218 * requested size of the SRQ, and set to the actual values allocated
1219 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1220 * will always be at least as large as the requested values.
1222 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1223 struct ib_srq_init_attr *srq_init_attr);
1226 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1227 * @srq: The SRQ to modify.
1228 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1229 * the current values of selected SRQ attributes are returned.
1230 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1231 * are being modified.
1233 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1234 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1235 * the number of receives queued drops below the limit.
1237 int ib_modify_srq(struct ib_srq *srq,
1238 struct ib_srq_attr *srq_attr,
1239 enum ib_srq_attr_mask srq_attr_mask);
1242 * ib_query_srq - Returns the attribute list and current values for the
1244 * @srq: The SRQ to query.
1245 * @srq_attr: The attributes of the specified SRQ.
1247 int ib_query_srq(struct ib_srq *srq,
1248 struct ib_srq_attr *srq_attr);
1251 * ib_destroy_srq - Destroys the specified SRQ.
1252 * @srq: The SRQ to destroy.
1254 int ib_destroy_srq(struct ib_srq *srq);
1257 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1258 * @srq: The SRQ to post the work request on.
1259 * @recv_wr: A list of work requests to post on the receive queue.
1260 * @bad_recv_wr: On an immediate failure, this parameter will reference
1261 * the work request that failed to be posted on the QP.
1263 static inline int ib_post_srq_recv(struct ib_srq *srq,
1264 struct ib_recv_wr *recv_wr,
1265 struct ib_recv_wr **bad_recv_wr)
1267 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1271 * ib_create_qp - Creates a QP associated with the specified protection
1273 * @pd: The protection domain associated with the QP.
1274 * @qp_init_attr: A list of initial attributes required to create the
1275 * QP. If QP creation succeeds, then the attributes are updated to
1276 * the actual capabilities of the created QP.
1278 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1279 struct ib_qp_init_attr *qp_init_attr);
1282 * ib_modify_qp - Modifies the attributes for the specified QP and then
1283 * transitions the QP to the given state.
1284 * @qp: The QP to modify.
1285 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1286 * the current values of selected QP attributes are returned.
1287 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1288 * are being modified.
1290 int ib_modify_qp(struct ib_qp *qp,
1291 struct ib_qp_attr *qp_attr,
1295 * ib_query_qp - Returns the attribute list and current values for the
1297 * @qp: The QP to query.
1298 * @qp_attr: The attributes of the specified QP.
1299 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1300 * @qp_init_attr: Additional attributes of the selected QP.
1302 * The qp_attr_mask may be used to limit the query to gathering only the
1303 * selected attributes.
1305 int ib_query_qp(struct ib_qp *qp,
1306 struct ib_qp_attr *qp_attr,
1308 struct ib_qp_init_attr *qp_init_attr);
1311 * ib_destroy_qp - Destroys the specified QP.
1312 * @qp: The QP to destroy.
1314 int ib_destroy_qp(struct ib_qp *qp);
1317 * ib_post_send - Posts a list of work requests to the send queue of
1319 * @qp: The QP to post the work request on.
1320 * @send_wr: A list of work requests to post on the send queue.
1321 * @bad_send_wr: On an immediate failure, this parameter will reference
1322 * the work request that failed to be posted on the QP.
1324 static inline int ib_post_send(struct ib_qp *qp,
1325 struct ib_send_wr *send_wr,
1326 struct ib_send_wr **bad_send_wr)
1328 return qp->device->post_send(qp, send_wr, bad_send_wr);
1332 * ib_post_recv - Posts a list of work requests to the receive queue of
1334 * @qp: The QP to post the work request on.
1335 * @recv_wr: A list of work requests to post on the receive queue.
1336 * @bad_recv_wr: On an immediate failure, this parameter will reference
1337 * the work request that failed to be posted on the QP.
1339 static inline int ib_post_recv(struct ib_qp *qp,
1340 struct ib_recv_wr *recv_wr,
1341 struct ib_recv_wr **bad_recv_wr)
1343 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1347 * ib_create_cq - Creates a CQ on the specified device.
1348 * @device: The device on which to create the CQ.
1349 * @comp_handler: A user-specified callback that is invoked when a
1350 * completion event occurs on the CQ.
1351 * @event_handler: A user-specified callback that is invoked when an
1352 * asynchronous event not associated with a completion occurs on the CQ.
1353 * @cq_context: Context associated with the CQ returned to the user via
1354 * the associated completion and event handlers.
1355 * @cqe: The minimum size of the CQ.
1356 * @comp_vector - Completion vector used to signal completion events.
1357 * Must be >= 0 and < context->num_comp_vectors.
1359 * Users can examine the cq structure to determine the actual CQ size.
1361 struct ib_cq *ib_create_cq(struct ib_device *device,
1362 ib_comp_handler comp_handler,
1363 void (*event_handler)(struct ib_event *, void *),
1364 void *cq_context, int cqe, int comp_vector);
1367 * ib_resize_cq - Modifies the capacity of the CQ.
1368 * @cq: The CQ to resize.
1369 * @cqe: The minimum size of the CQ.
1371 * Users can examine the cq structure to determine the actual CQ size.
1373 int ib_resize_cq(struct ib_cq *cq, int cqe);
1376 * ib_destroy_cq - Destroys the specified CQ.
1377 * @cq: The CQ to destroy.
1379 int ib_destroy_cq(struct ib_cq *cq);
1382 * ib_poll_cq - poll a CQ for completion(s)
1383 * @cq:the CQ being polled
1384 * @num_entries:maximum number of completions to return
1385 * @wc:array of at least @num_entries &struct ib_wc where completions
1388 * Poll a CQ for (possibly multiple) completions. If the return value
1389 * is < 0, an error occurred. If the return value is >= 0, it is the
1390 * number of completions returned. If the return value is
1391 * non-negative and < num_entries, then the CQ was emptied.
1393 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1396 return cq->device->poll_cq(cq, num_entries, wc);
1400 * ib_peek_cq - Returns the number of unreaped completions currently
1401 * on the specified CQ.
1402 * @cq: The CQ to peek.
1403 * @wc_cnt: A minimum number of unreaped completions to check for.
1405 * If the number of unreaped completions is greater than or equal to wc_cnt,
1406 * this function returns wc_cnt, otherwise, it returns the actual number of
1407 * unreaped completions.
1409 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1412 * ib_req_notify_cq - Request completion notification on a CQ.
1413 * @cq: The CQ to generate an event for.
1415 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
1416 * to request an event on the next solicited event or next work
1417 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
1418 * may also be |ed in to request a hint about missed events, as
1422 * < 0 means an error occurred while requesting notification
1423 * == 0 means notification was requested successfully, and if
1424 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
1425 * were missed and it is safe to wait for another event. In
1426 * this case is it guaranteed that any work completions added
1427 * to the CQ since the last CQ poll will trigger a completion
1428 * notification event.
1429 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
1430 * in. It means that the consumer must poll the CQ again to
1431 * make sure it is empty to avoid missing an event because of a
1432 * race between requesting notification and an entry being
1433 * added to the CQ. This return value means it is possible
1434 * (but not guaranteed) that a work completion has been added
1435 * to the CQ since the last poll without triggering a
1436 * completion notification event.
1438 static inline int ib_req_notify_cq(struct ib_cq *cq,
1439 enum ib_cq_notify_flags flags)
1441 return cq->device->req_notify_cq(cq, flags);
1445 * ib_req_ncomp_notif - Request completion notification when there are
1446 * at least the specified number of unreaped completions on the CQ.
1447 * @cq: The CQ to generate an event for.
1448 * @wc_cnt: The number of unreaped completions that should be on the
1449 * CQ before an event is generated.
1451 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1453 return cq->device->req_ncomp_notif ?
1454 cq->device->req_ncomp_notif(cq, wc_cnt) :
1459 * ib_get_dma_mr - Returns a memory region for system memory that is
1461 * @pd: The protection domain associated with the memory region.
1462 * @mr_access_flags: Specifies the memory access rights.
1464 * Note that the ib_dma_*() functions defined below must be used
1465 * to create/destroy addresses used with the Lkey or Rkey returned
1466 * by ib_get_dma_mr().
1468 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1471 * ib_dma_mapping_error - check a DMA addr for error
1472 * @dev: The device for which the dma_addr was created
1473 * @dma_addr: The DMA address to check
1475 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
1478 return dev->dma_ops->mapping_error(dev, dma_addr);
1479 return dma_mapping_error(dma_addr);
1483 * ib_dma_map_single - Map a kernel virtual address to DMA address
1484 * @dev: The device for which the dma_addr is to be created
1485 * @cpu_addr: The kernel virtual address
1486 * @size: The size of the region in bytes
1487 * @direction: The direction of the DMA
1489 static inline u64 ib_dma_map_single(struct ib_device *dev,
1490 void *cpu_addr, size_t size,
1491 enum dma_data_direction direction)
1494 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
1495 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
1499 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1500 * @dev: The device for which the DMA address was created
1501 * @addr: The DMA address
1502 * @size: The size of the region in bytes
1503 * @direction: The direction of the DMA
1505 static inline void ib_dma_unmap_single(struct ib_device *dev,
1506 u64 addr, size_t size,
1507 enum dma_data_direction direction)
1510 dev->dma_ops->unmap_single(dev, addr, size, direction);
1512 dma_unmap_single(dev->dma_device, addr, size, direction);
1516 * ib_dma_map_page - Map a physical page to DMA address
1517 * @dev: The device for which the dma_addr is to be created
1518 * @page: The page to be mapped
1519 * @offset: The offset within the page
1520 * @size: The size of the region in bytes
1521 * @direction: The direction of the DMA
1523 static inline u64 ib_dma_map_page(struct ib_device *dev,
1525 unsigned long offset,
1527 enum dma_data_direction direction)
1530 return dev->dma_ops->map_page(dev, page, offset, size, direction);
1531 return dma_map_page(dev->dma_device, page, offset, size, direction);
1535 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1536 * @dev: The device for which the DMA address was created
1537 * @addr: The DMA address
1538 * @size: The size of the region in bytes
1539 * @direction: The direction of the DMA
1541 static inline void ib_dma_unmap_page(struct ib_device *dev,
1542 u64 addr, size_t size,
1543 enum dma_data_direction direction)
1546 dev->dma_ops->unmap_page(dev, addr, size, direction);
1548 dma_unmap_page(dev->dma_device, addr, size, direction);
1552 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
1553 * @dev: The device for which the DMA addresses are to be created
1554 * @sg: The array of scatter/gather entries
1555 * @nents: The number of scatter/gather entries
1556 * @direction: The direction of the DMA
1558 static inline int ib_dma_map_sg(struct ib_device *dev,
1559 struct scatterlist *sg, int nents,
1560 enum dma_data_direction direction)
1563 return dev->dma_ops->map_sg(dev, sg, nents, direction);
1564 return dma_map_sg(dev->dma_device, sg, nents, direction);
1568 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
1569 * @dev: The device for which the DMA addresses were created
1570 * @sg: The array of scatter/gather entries
1571 * @nents: The number of scatter/gather entries
1572 * @direction: The direction of the DMA
1574 static inline void ib_dma_unmap_sg(struct ib_device *dev,
1575 struct scatterlist *sg, int nents,
1576 enum dma_data_direction direction)
1579 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
1581 dma_unmap_sg(dev->dma_device, sg, nents, direction);
1585 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
1586 * @dev: The device for which the DMA addresses were created
1587 * @sg: The scatter/gather entry
1589 static inline u64 ib_sg_dma_address(struct ib_device *dev,
1590 struct scatterlist *sg)
1593 return dev->dma_ops->dma_address(dev, sg);
1594 return sg_dma_address(sg);
1598 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
1599 * @dev: The device for which the DMA addresses were created
1600 * @sg: The scatter/gather entry
1602 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
1603 struct scatterlist *sg)
1606 return dev->dma_ops->dma_len(dev, sg);
1607 return sg_dma_len(sg);
1611 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
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_cpu(struct ib_device *dev,
1620 enum dma_data_direction dir)
1623 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
1625 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
1629 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
1630 * @dev: The device for which the DMA address was created
1631 * @addr: The DMA address
1632 * @size: The size of the region in bytes
1633 * @dir: The direction of the DMA
1635 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
1638 enum dma_data_direction dir)
1641 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
1643 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
1647 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
1648 * @dev: The device for which the DMA address is requested
1649 * @size: The size of the region to allocate in bytes
1650 * @dma_handle: A pointer for returning the DMA address of the region
1651 * @flag: memory allocator flags
1653 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
1659 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
1664 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
1665 *dma_handle = handle;
1671 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
1672 * @dev: The device for which the DMA addresses were allocated
1673 * @size: The size of the region
1674 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
1675 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
1677 static inline void ib_dma_free_coherent(struct ib_device *dev,
1678 size_t size, void *cpu_addr,
1682 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
1684 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
1688 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1690 * @pd: The protection domain associated assigned to the registered region.
1691 * @phys_buf_array: Specifies a list of physical buffers to use in the
1693 * @num_phys_buf: Specifies the size of the phys_buf_array.
1694 * @mr_access_flags: Specifies the memory access rights.
1695 * @iova_start: The offset of the region's starting I/O virtual address.
1697 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1698 struct ib_phys_buf *phys_buf_array,
1700 int mr_access_flags,
1704 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1705 * Conceptually, this call performs the functions deregister memory region
1706 * followed by register physical memory region. Where possible,
1707 * resources are reused instead of deallocated and reallocated.
1708 * @mr: The memory region to modify.
1709 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1710 * properties of the memory region are being modified.
1711 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1712 * the new protection domain to associated with the memory region,
1713 * otherwise, this parameter is ignored.
1714 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1715 * field specifies a list of physical buffers to use in the new
1716 * translation, otherwise, this parameter is ignored.
1717 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1718 * field specifies the size of the phys_buf_array, otherwise, this
1719 * parameter is ignored.
1720 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1721 * field specifies the new memory access rights, otherwise, this
1722 * parameter is ignored.
1723 * @iova_start: The offset of the region's starting I/O virtual address.
1725 int ib_rereg_phys_mr(struct ib_mr *mr,
1728 struct ib_phys_buf *phys_buf_array,
1730 int mr_access_flags,
1734 * ib_query_mr - Retrieves information about a specific memory region.
1735 * @mr: The memory region to retrieve information about.
1736 * @mr_attr: The attributes of the specified memory region.
1738 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1741 * ib_dereg_mr - Deregisters a memory region and removes it from the
1742 * HCA translation table.
1743 * @mr: The memory region to deregister.
1745 int ib_dereg_mr(struct ib_mr *mr);
1748 * ib_alloc_mw - Allocates a memory window.
1749 * @pd: The protection domain associated with the memory window.
1751 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1754 * ib_bind_mw - Posts a work request to the send queue of the specified
1755 * QP, which binds the memory window to the given address range and
1756 * remote access attributes.
1757 * @qp: QP to post the bind work request on.
1758 * @mw: The memory window to bind.
1759 * @mw_bind: Specifies information about the memory window, including
1760 * its address range, remote access rights, and associated memory region.
1762 static inline int ib_bind_mw(struct ib_qp *qp,
1764 struct ib_mw_bind *mw_bind)
1766 /* XXX reference counting in corresponding MR? */
1767 return mw->device->bind_mw ?
1768 mw->device->bind_mw(qp, mw, mw_bind) :
1773 * ib_dealloc_mw - Deallocates a memory window.
1774 * @mw: The memory window to deallocate.
1776 int ib_dealloc_mw(struct ib_mw *mw);
1779 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1780 * @pd: The protection domain associated with the unmapped region.
1781 * @mr_access_flags: Specifies the memory access rights.
1782 * @fmr_attr: Attributes of the unmapped region.
1784 * A fast memory region must be mapped before it can be used as part of
1787 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1788 int mr_access_flags,
1789 struct ib_fmr_attr *fmr_attr);
1792 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1793 * @fmr: The fast memory region to associate with the pages.
1794 * @page_list: An array of physical pages to map to the fast memory region.
1795 * @list_len: The number of pages in page_list.
1796 * @iova: The I/O virtual address to use with the mapped region.
1798 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1799 u64 *page_list, int list_len,
1802 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1806 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1807 * @fmr_list: A linked list of fast memory regions to unmap.
1809 int ib_unmap_fmr(struct list_head *fmr_list);
1812 * ib_dealloc_fmr - Deallocates a fast memory region.
1813 * @fmr: The fast memory region to deallocate.
1815 int ib_dealloc_fmr(struct ib_fmr *fmr);
1818 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1819 * @qp: QP to attach to the multicast group. The QP must be type
1821 * @gid: Multicast group GID.
1822 * @lid: Multicast group LID in host byte order.
1824 * In order to send and receive multicast packets, subnet
1825 * administration must have created the multicast group and configured
1826 * the fabric appropriately. The port associated with the specified
1827 * QP must also be a member of the multicast group.
1829 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1832 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1833 * @qp: QP to detach from the multicast group.
1834 * @gid: Multicast group GID.
1835 * @lid: Multicast group LID in host byte order.
1837 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1839 #endif /* IB_VERBS_H */