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>
48 #include <linux/kref.h>
50 #include <asm/atomic.h>
51 #include <asm/scatterlist.h>
52 #include <asm/uaccess.h>
63 /* IB values map to NodeInfo:NodeType. */
70 enum rdma_transport_type
{
75 enum rdma_transport_type
76 rdma_node_get_transport(enum rdma_node_type node_type
) __attribute_const__
;
78 enum ib_device_cap_flags
{
79 IB_DEVICE_RESIZE_MAX_WR
= 1,
80 IB_DEVICE_BAD_PKEY_CNTR
= (1<<1),
81 IB_DEVICE_BAD_QKEY_CNTR
= (1<<2),
82 IB_DEVICE_RAW_MULTI
= (1<<3),
83 IB_DEVICE_AUTO_PATH_MIG
= (1<<4),
84 IB_DEVICE_CHANGE_PHY_PORT
= (1<<5),
85 IB_DEVICE_UD_AV_PORT_ENFORCE
= (1<<6),
86 IB_DEVICE_CURR_QP_STATE_MOD
= (1<<7),
87 IB_DEVICE_SHUTDOWN_PORT
= (1<<8),
88 IB_DEVICE_INIT_TYPE
= (1<<9),
89 IB_DEVICE_PORT_ACTIVE_EVENT
= (1<<10),
90 IB_DEVICE_SYS_IMAGE_GUID
= (1<<11),
91 IB_DEVICE_RC_RNR_NAK_GEN
= (1<<12),
92 IB_DEVICE_SRQ_RESIZE
= (1<<13),
93 IB_DEVICE_N_NOTIFY_CQ
= (1<<14),
94 IB_DEVICE_ZERO_STAG
= (1<<15),
95 IB_DEVICE_SEND_W_INV
= (1<<16),
96 IB_DEVICE_MEM_WINDOW
= (1<<17)
105 struct ib_device_attr
{
107 __be64 sys_image_guid
;
115 int device_cap_flags
;
125 int max_qp_init_rd_atom
;
126 int max_ee_init_rd_atom
;
127 enum ib_atomic_cap atomic_cap
;
134 int max_mcast_qp_attach
;
135 int max_total_mcast_qp_attach
;
143 u8 local_ca_ack_delay
;
154 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu
)
157 case IB_MTU_256
: return 256;
158 case IB_MTU_512
: return 512;
159 case IB_MTU_1024
: return 1024;
160 case IB_MTU_2048
: return 2048;
161 case IB_MTU_4096
: return 4096;
172 IB_PORT_ACTIVE_DEFER
= 5
175 enum ib_port_cap_flags
{
177 IB_PORT_NOTICE_SUP
= 1 << 2,
178 IB_PORT_TRAP_SUP
= 1 << 3,
179 IB_PORT_OPT_IPD_SUP
= 1 << 4,
180 IB_PORT_AUTO_MIGR_SUP
= 1 << 5,
181 IB_PORT_SL_MAP_SUP
= 1 << 6,
182 IB_PORT_MKEY_NVRAM
= 1 << 7,
183 IB_PORT_PKEY_NVRAM
= 1 << 8,
184 IB_PORT_LED_INFO_SUP
= 1 << 9,
185 IB_PORT_SM_DISABLED
= 1 << 10,
186 IB_PORT_SYS_IMAGE_GUID_SUP
= 1 << 11,
187 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP
= 1 << 12,
188 IB_PORT_CM_SUP
= 1 << 16,
189 IB_PORT_SNMP_TUNNEL_SUP
= 1 << 17,
190 IB_PORT_REINIT_SUP
= 1 << 18,
191 IB_PORT_DEVICE_MGMT_SUP
= 1 << 19,
192 IB_PORT_VENDOR_CLASS_SUP
= 1 << 20,
193 IB_PORT_DR_NOTICE_SUP
= 1 << 21,
194 IB_PORT_CAP_MASK_NOTICE_SUP
= 1 << 22,
195 IB_PORT_BOOT_MGMT_SUP
= 1 << 23,
196 IB_PORT_LINK_LATENCY_SUP
= 1 << 24,
197 IB_PORT_CLIENT_REG_SUP
= 1 << 25
207 static inline int ib_width_enum_to_int(enum ib_port_width width
)
210 case IB_WIDTH_1X
: return 1;
211 case IB_WIDTH_4X
: return 4;
212 case IB_WIDTH_8X
: return 8;
213 case IB_WIDTH_12X
: return 12;
218 struct ib_port_attr
{
219 enum ib_port_state state
;
221 enum ib_mtu active_mtu
;
240 enum ib_device_modify_flags
{
241 IB_DEVICE_MODIFY_SYS_IMAGE_GUID
= 1 << 0,
242 IB_DEVICE_MODIFY_NODE_DESC
= 1 << 1
245 struct ib_device_modify
{
250 enum ib_port_modify_flags
{
251 IB_PORT_SHUTDOWN
= 1,
252 IB_PORT_INIT_TYPE
= (1<<2),
253 IB_PORT_RESET_QKEY_CNTR
= (1<<3)
256 struct ib_port_modify
{
257 u32 set_port_cap_mask
;
258 u32 clr_port_cap_mask
;
266 IB_EVENT_QP_ACCESS_ERR
,
270 IB_EVENT_PATH_MIG_ERR
,
271 IB_EVENT_DEVICE_FATAL
,
272 IB_EVENT_PORT_ACTIVE
,
275 IB_EVENT_PKEY_CHANGE
,
278 IB_EVENT_SRQ_LIMIT_REACHED
,
279 IB_EVENT_QP_LAST_WQE_REACHED
,
280 IB_EVENT_CLIENT_REREGISTER
284 struct ib_device
*device
;
291 enum ib_event_type event
;
294 struct ib_event_handler
{
295 struct ib_device
*device
;
296 void (*handler
)(struct ib_event_handler
*, struct ib_event
*);
297 struct list_head list
;
300 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
302 (_ptr)->device = _device; \
303 (_ptr)->handler = _handler; \
304 INIT_LIST_HEAD(&(_ptr)->list); \
307 struct ib_global_route
{
316 __be32 version_tclass_flow
;
325 IB_MULTICAST_QPN
= 0xffffff
328 #define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
335 IB_RATE_PORT_CURRENT
= 0,
336 IB_RATE_2_5_GBPS
= 2,
344 IB_RATE_120_GBPS
= 10
348 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
349 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
350 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
351 * @rate: rate to convert.
353 int ib_rate_to_mult(enum ib_rate rate
) __attribute_const__
;
356 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
358 * @mult: multiple to convert.
360 enum ib_rate
mult_to_ib_rate(int mult
) __attribute_const__
;
363 struct ib_global_route grh
;
376 IB_WC_LOC_EEC_OP_ERR
,
381 IB_WC_LOC_ACCESS_ERR
,
382 IB_WC_REM_INV_REQ_ERR
,
383 IB_WC_REM_ACCESS_ERR
,
386 IB_WC_RNR_RETRY_EXC_ERR
,
387 IB_WC_LOC_RDD_VIOL_ERR
,
388 IB_WC_REM_INV_RD_REQ_ERR
,
391 IB_WC_INV_EEC_STATE_ERR
,
393 IB_WC_RESP_TIMEOUT_ERR
,
405 * Set value of IB_WC_RECV so consumers can test if a completion is a
406 * receive by testing (opcode & IB_WC_RECV).
409 IB_WC_RECV_RDMA_WITH_IMM
414 IB_WC_WITH_IMM
= (1<<1)
419 enum ib_wc_status status
;
420 enum ib_wc_opcode opcode
;
431 u8 port_num
; /* valid only for DR SMPs on switches */
439 enum ib_srq_attr_mask
{
440 IB_SRQ_MAX_WR
= 1 << 0,
441 IB_SRQ_LIMIT
= 1 << 1,
450 struct ib_srq_init_attr
{
451 void (*event_handler
)(struct ib_event
*, void *);
453 struct ib_srq_attr attr
;
471 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
472 * here (and in that order) since the MAD layer uses them as
473 * indices into a 2-entry table.
485 struct ib_qp_init_attr
{
486 void (*event_handler
)(struct ib_event
*, void *);
488 struct ib_cq
*send_cq
;
489 struct ib_cq
*recv_cq
;
491 struct ib_qp_cap cap
;
492 enum ib_sig_type sq_sig_type
;
493 enum ib_qp_type qp_type
;
494 u8 port_num
; /* special QP types only */
497 enum ib_rnr_timeout
{
498 IB_RNR_TIMER_655_36
= 0,
499 IB_RNR_TIMER_000_01
= 1,
500 IB_RNR_TIMER_000_02
= 2,
501 IB_RNR_TIMER_000_03
= 3,
502 IB_RNR_TIMER_000_04
= 4,
503 IB_RNR_TIMER_000_06
= 5,
504 IB_RNR_TIMER_000_08
= 6,
505 IB_RNR_TIMER_000_12
= 7,
506 IB_RNR_TIMER_000_16
= 8,
507 IB_RNR_TIMER_000_24
= 9,
508 IB_RNR_TIMER_000_32
= 10,
509 IB_RNR_TIMER_000_48
= 11,
510 IB_RNR_TIMER_000_64
= 12,
511 IB_RNR_TIMER_000_96
= 13,
512 IB_RNR_TIMER_001_28
= 14,
513 IB_RNR_TIMER_001_92
= 15,
514 IB_RNR_TIMER_002_56
= 16,
515 IB_RNR_TIMER_003_84
= 17,
516 IB_RNR_TIMER_005_12
= 18,
517 IB_RNR_TIMER_007_68
= 19,
518 IB_RNR_TIMER_010_24
= 20,
519 IB_RNR_TIMER_015_36
= 21,
520 IB_RNR_TIMER_020_48
= 22,
521 IB_RNR_TIMER_030_72
= 23,
522 IB_RNR_TIMER_040_96
= 24,
523 IB_RNR_TIMER_061_44
= 25,
524 IB_RNR_TIMER_081_92
= 26,
525 IB_RNR_TIMER_122_88
= 27,
526 IB_RNR_TIMER_163_84
= 28,
527 IB_RNR_TIMER_245_76
= 29,
528 IB_RNR_TIMER_327_68
= 30,
529 IB_RNR_TIMER_491_52
= 31
532 enum ib_qp_attr_mask
{
534 IB_QP_CUR_STATE
= (1<<1),
535 IB_QP_EN_SQD_ASYNC_NOTIFY
= (1<<2),
536 IB_QP_ACCESS_FLAGS
= (1<<3),
537 IB_QP_PKEY_INDEX
= (1<<4),
541 IB_QP_PATH_MTU
= (1<<8),
542 IB_QP_TIMEOUT
= (1<<9),
543 IB_QP_RETRY_CNT
= (1<<10),
544 IB_QP_RNR_RETRY
= (1<<11),
545 IB_QP_RQ_PSN
= (1<<12),
546 IB_QP_MAX_QP_RD_ATOMIC
= (1<<13),
547 IB_QP_ALT_PATH
= (1<<14),
548 IB_QP_MIN_RNR_TIMER
= (1<<15),
549 IB_QP_SQ_PSN
= (1<<16),
550 IB_QP_MAX_DEST_RD_ATOMIC
= (1<<17),
551 IB_QP_PATH_MIG_STATE
= (1<<18),
553 IB_QP_DEST_QPN
= (1<<20)
573 enum ib_qp_state qp_state
;
574 enum ib_qp_state cur_qp_state
;
575 enum ib_mtu path_mtu
;
576 enum ib_mig_state path_mig_state
;
582 struct ib_qp_cap cap
;
583 struct ib_ah_attr ah_attr
;
584 struct ib_ah_attr alt_ah_attr
;
587 u8 en_sqd_async_notify
;
590 u8 max_dest_rd_atomic
;
602 IB_WR_RDMA_WRITE_WITH_IMM
,
606 IB_WR_ATOMIC_CMP_AND_SWP
,
607 IB_WR_ATOMIC_FETCH_AND_ADD
612 IB_SEND_SIGNALED
= (1<<1),
613 IB_SEND_SOLICITED
= (1<<2),
614 IB_SEND_INLINE
= (1<<3)
624 struct ib_send_wr
*next
;
626 struct ib_sge
*sg_list
;
628 enum ib_wr_opcode opcode
;
646 u16 pkey_index
; /* valid for GSI only */
647 u8 port_num
; /* valid for DR SMPs on switch only */
653 struct ib_recv_wr
*next
;
655 struct ib_sge
*sg_list
;
659 enum ib_access_flags
{
660 IB_ACCESS_LOCAL_WRITE
= 1,
661 IB_ACCESS_REMOTE_WRITE
= (1<<1),
662 IB_ACCESS_REMOTE_READ
= (1<<2),
663 IB_ACCESS_REMOTE_ATOMIC
= (1<<3),
664 IB_ACCESS_MW_BIND
= (1<<4)
674 u64 device_virt_addr
;
681 enum ib_mr_rereg_flags
{
682 IB_MR_REREG_TRANS
= 1,
683 IB_MR_REREG_PD
= (1<<1),
684 IB_MR_REREG_ACCESS
= (1<<2)
703 struct ib_device
*device
;
704 struct list_head pd_list
;
705 struct list_head mr_list
;
706 struct list_head mw_list
;
707 struct list_head cq_list
;
708 struct list_head qp_list
;
709 struct list_head srq_list
;
710 struct list_head ah_list
;
714 u64 user_handle
; /* handle given to us by userspace */
715 struct ib_ucontext
*context
; /* associated user context */
716 void *object
; /* containing object */
717 struct list_head list
; /* link to context's list */
718 u32 id
; /* index into kernel idr */
720 struct rw_semaphore mutex
; /* protects .live */
725 unsigned long user_base
;
726 unsigned long virt_base
;
731 struct list_head chunk_list
;
734 struct ib_umem_chunk
{
735 struct list_head list
;
738 struct scatterlist page_list
[0];
748 #define IB_UMEM_MAX_PAGE_CHUNK \
749 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
750 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
751 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
753 struct ib_umem_object
{
754 struct ib_uobject uobject
;
759 struct ib_device
*device
;
760 struct ib_uobject
*uobject
;
761 atomic_t usecnt
; /* count all resources */
765 struct ib_device
*device
;
767 struct ib_uobject
*uobject
;
770 typedef void (*ib_comp_handler
)(struct ib_cq
*cq
, void *cq_context
);
773 struct ib_device
*device
;
774 struct ib_uobject
*uobject
;
775 ib_comp_handler comp_handler
;
776 void (*event_handler
)(struct ib_event
*, void *);
779 atomic_t usecnt
; /* count number of work queues */
783 struct ib_device
*device
;
785 struct ib_uobject
*uobject
;
786 void (*event_handler
)(struct ib_event
*, void *);
792 struct ib_device
*device
;
794 struct ib_cq
*send_cq
;
795 struct ib_cq
*recv_cq
;
797 struct ib_uobject
*uobject
;
798 void (*event_handler
)(struct ib_event
*, void *);
801 enum ib_qp_type qp_type
;
805 struct ib_device
*device
;
807 struct ib_uobject
*uobject
;
810 atomic_t usecnt
; /* count number of MWs */
814 struct ib_device
*device
;
816 struct ib_uobject
*uobject
;
821 struct ib_device
*device
;
823 struct list_head list
;
831 enum ib_process_mad_flags
{
832 IB_MAD_IGNORE_MKEY
= 1,
833 IB_MAD_IGNORE_BKEY
= 2,
834 IB_MAD_IGNORE_ALL
= IB_MAD_IGNORE_MKEY
| IB_MAD_IGNORE_BKEY
838 IB_MAD_RESULT_FAILURE
= 0, /* (!SUCCESS is the important flag) */
839 IB_MAD_RESULT_SUCCESS
= 1 << 0, /* MAD was successfully processed */
840 IB_MAD_RESULT_REPLY
= 1 << 1, /* Reply packet needs to be sent */
841 IB_MAD_RESULT_CONSUMED
= 1 << 2 /* Packet consumed: stop processing */
844 #define IB_DEVICE_NAME_MAX 64
848 struct ib_event_handler event_handler
;
849 struct ib_pkey_cache
**pkey_cache
;
850 struct ib_gid_cache
**gid_cache
;
854 struct ib_dma_mapping_ops
{
855 int (*mapping_error
)(struct ib_device
*dev
,
857 u64 (*map_single
)(struct ib_device
*dev
,
858 void *ptr
, size_t size
,
859 enum dma_data_direction direction
);
860 void (*unmap_single
)(struct ib_device
*dev
,
861 u64 addr
, size_t size
,
862 enum dma_data_direction direction
);
863 u64 (*map_page
)(struct ib_device
*dev
,
864 struct page
*page
, unsigned long offset
,
866 enum dma_data_direction direction
);
867 void (*unmap_page
)(struct ib_device
*dev
,
868 u64 addr
, size_t size
,
869 enum dma_data_direction direction
);
870 int (*map_sg
)(struct ib_device
*dev
,
871 struct scatterlist
*sg
, int nents
,
872 enum dma_data_direction direction
);
873 void (*unmap_sg
)(struct ib_device
*dev
,
874 struct scatterlist
*sg
, int nents
,
875 enum dma_data_direction direction
);
876 u64 (*dma_address
)(struct ib_device
*dev
,
877 struct scatterlist
*sg
);
878 unsigned int (*dma_len
)(struct ib_device
*dev
,
879 struct scatterlist
*sg
);
880 void (*sync_single_for_cpu
)(struct ib_device
*dev
,
883 enum dma_data_direction dir
);
884 void (*sync_single_for_device
)(struct ib_device
*dev
,
887 enum dma_data_direction dir
);
888 void *(*alloc_coherent
)(struct ib_device
*dev
,
892 void (*free_coherent
)(struct ib_device
*dev
,
893 size_t size
, void *cpu_addr
,
900 struct device
*dma_device
;
902 char name
[IB_DEVICE_NAME_MAX
];
904 struct list_head event_handler_list
;
905 spinlock_t event_handler_lock
;
907 struct list_head core_list
;
908 struct list_head client_data_list
;
909 spinlock_t client_data_lock
;
911 struct ib_cache cache
;
915 struct iw_cm_verbs
*iwcm
;
917 int (*query_device
)(struct ib_device
*device
,
918 struct ib_device_attr
*device_attr
);
919 int (*query_port
)(struct ib_device
*device
,
921 struct ib_port_attr
*port_attr
);
922 int (*query_gid
)(struct ib_device
*device
,
923 u8 port_num
, int index
,
925 int (*query_pkey
)(struct ib_device
*device
,
926 u8 port_num
, u16 index
, u16
*pkey
);
927 int (*modify_device
)(struct ib_device
*device
,
928 int device_modify_mask
,
929 struct ib_device_modify
*device_modify
);
930 int (*modify_port
)(struct ib_device
*device
,
931 u8 port_num
, int port_modify_mask
,
932 struct ib_port_modify
*port_modify
);
933 struct ib_ucontext
* (*alloc_ucontext
)(struct ib_device
*device
,
934 struct ib_udata
*udata
);
935 int (*dealloc_ucontext
)(struct ib_ucontext
*context
);
936 int (*mmap
)(struct ib_ucontext
*context
,
937 struct vm_area_struct
*vma
);
938 struct ib_pd
* (*alloc_pd
)(struct ib_device
*device
,
939 struct ib_ucontext
*context
,
940 struct ib_udata
*udata
);
941 int (*dealloc_pd
)(struct ib_pd
*pd
);
942 struct ib_ah
* (*create_ah
)(struct ib_pd
*pd
,
943 struct ib_ah_attr
*ah_attr
);
944 int (*modify_ah
)(struct ib_ah
*ah
,
945 struct ib_ah_attr
*ah_attr
);
946 int (*query_ah
)(struct ib_ah
*ah
,
947 struct ib_ah_attr
*ah_attr
);
948 int (*destroy_ah
)(struct ib_ah
*ah
);
949 struct ib_srq
* (*create_srq
)(struct ib_pd
*pd
,
950 struct ib_srq_init_attr
*srq_init_attr
,
951 struct ib_udata
*udata
);
952 int (*modify_srq
)(struct ib_srq
*srq
,
953 struct ib_srq_attr
*srq_attr
,
954 enum ib_srq_attr_mask srq_attr_mask
,
955 struct ib_udata
*udata
);
956 int (*query_srq
)(struct ib_srq
*srq
,
957 struct ib_srq_attr
*srq_attr
);
958 int (*destroy_srq
)(struct ib_srq
*srq
);
959 int (*post_srq_recv
)(struct ib_srq
*srq
,
960 struct ib_recv_wr
*recv_wr
,
961 struct ib_recv_wr
**bad_recv_wr
);
962 struct ib_qp
* (*create_qp
)(struct ib_pd
*pd
,
963 struct ib_qp_init_attr
*qp_init_attr
,
964 struct ib_udata
*udata
);
965 int (*modify_qp
)(struct ib_qp
*qp
,
966 struct ib_qp_attr
*qp_attr
,
968 struct ib_udata
*udata
);
969 int (*query_qp
)(struct ib_qp
*qp
,
970 struct ib_qp_attr
*qp_attr
,
972 struct ib_qp_init_attr
*qp_init_attr
);
973 int (*destroy_qp
)(struct ib_qp
*qp
);
974 int (*post_send
)(struct ib_qp
*qp
,
975 struct ib_send_wr
*send_wr
,
976 struct ib_send_wr
**bad_send_wr
);
977 int (*post_recv
)(struct ib_qp
*qp
,
978 struct ib_recv_wr
*recv_wr
,
979 struct ib_recv_wr
**bad_recv_wr
);
980 struct ib_cq
* (*create_cq
)(struct ib_device
*device
, int cqe
,
981 struct ib_ucontext
*context
,
982 struct ib_udata
*udata
);
983 int (*destroy_cq
)(struct ib_cq
*cq
);
984 int (*resize_cq
)(struct ib_cq
*cq
, int cqe
,
985 struct ib_udata
*udata
);
986 int (*poll_cq
)(struct ib_cq
*cq
, int num_entries
,
988 int (*peek_cq
)(struct ib_cq
*cq
, int wc_cnt
);
989 int (*req_notify_cq
)(struct ib_cq
*cq
,
990 enum ib_cq_notify cq_notify
);
991 int (*req_ncomp_notif
)(struct ib_cq
*cq
,
993 struct ib_mr
* (*get_dma_mr
)(struct ib_pd
*pd
,
994 int mr_access_flags
);
995 struct ib_mr
* (*reg_phys_mr
)(struct ib_pd
*pd
,
996 struct ib_phys_buf
*phys_buf_array
,
1000 struct ib_mr
* (*reg_user_mr
)(struct ib_pd
*pd
,
1001 struct ib_umem
*region
,
1002 int mr_access_flags
,
1003 struct ib_udata
*udata
);
1004 int (*query_mr
)(struct ib_mr
*mr
,
1005 struct ib_mr_attr
*mr_attr
);
1006 int (*dereg_mr
)(struct ib_mr
*mr
);
1007 int (*rereg_phys_mr
)(struct ib_mr
*mr
,
1010 struct ib_phys_buf
*phys_buf_array
,
1012 int mr_access_flags
,
1014 struct ib_mw
* (*alloc_mw
)(struct ib_pd
*pd
);
1015 int (*bind_mw
)(struct ib_qp
*qp
,
1017 struct ib_mw_bind
*mw_bind
);
1018 int (*dealloc_mw
)(struct ib_mw
*mw
);
1019 struct ib_fmr
* (*alloc_fmr
)(struct ib_pd
*pd
,
1020 int mr_access_flags
,
1021 struct ib_fmr_attr
*fmr_attr
);
1022 int (*map_phys_fmr
)(struct ib_fmr
*fmr
,
1023 u64
*page_list
, int list_len
,
1025 int (*unmap_fmr
)(struct list_head
*fmr_list
);
1026 int (*dealloc_fmr
)(struct ib_fmr
*fmr
);
1027 int (*attach_mcast
)(struct ib_qp
*qp
,
1030 int (*detach_mcast
)(struct ib_qp
*qp
,
1033 int (*process_mad
)(struct ib_device
*device
,
1034 int process_mad_flags
,
1036 struct ib_wc
*in_wc
,
1037 struct ib_grh
*in_grh
,
1038 struct ib_mad
*in_mad
,
1039 struct ib_mad
*out_mad
);
1041 struct ib_dma_mapping_ops
*dma_ops
;
1043 struct module
*owner
;
1044 struct class_device class_dev
;
1045 struct kobject ports_parent
;
1046 struct list_head port_list
;
1049 IB_DEV_UNINITIALIZED
,
1054 u64 uverbs_cmd_mask
;
1065 void (*add
) (struct ib_device
*);
1066 void (*remove
)(struct ib_device
*);
1068 struct list_head list
;
1071 struct ib_device
*ib_alloc_device(size_t size
);
1072 void ib_dealloc_device(struct ib_device
*device
);
1074 int ib_register_device (struct ib_device
*device
);
1075 void ib_unregister_device(struct ib_device
*device
);
1077 int ib_register_client (struct ib_client
*client
);
1078 void ib_unregister_client(struct ib_client
*client
);
1080 void *ib_get_client_data(struct ib_device
*device
, struct ib_client
*client
);
1081 void ib_set_client_data(struct ib_device
*device
, struct ib_client
*client
,
1084 static inline int ib_copy_from_udata(void *dest
, struct ib_udata
*udata
, size_t len
)
1086 return copy_from_user(dest
, udata
->inbuf
, len
) ? -EFAULT
: 0;
1089 static inline int ib_copy_to_udata(struct ib_udata
*udata
, void *src
, size_t len
)
1091 return copy_to_user(udata
->outbuf
, src
, len
) ? -EFAULT
: 0;
1095 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1096 * contains all required attributes and no attributes not allowed for
1097 * the given QP state transition.
1098 * @cur_state: Current QP state
1099 * @next_state: Next QP state
1101 * @mask: Mask of supplied QP attributes
1103 * This function is a helper function that a low-level driver's
1104 * modify_qp method can use to validate the consumer's input. It
1105 * checks that cur_state and next_state are valid QP states, that a
1106 * transition from cur_state to next_state is allowed by the IB spec,
1107 * and that the attribute mask supplied is allowed for the transition.
1109 int ib_modify_qp_is_ok(enum ib_qp_state cur_state
, enum ib_qp_state next_state
,
1110 enum ib_qp_type type
, enum ib_qp_attr_mask mask
);
1112 int ib_register_event_handler (struct ib_event_handler
*event_handler
);
1113 int ib_unregister_event_handler(struct ib_event_handler
*event_handler
);
1114 void ib_dispatch_event(struct ib_event
*event
);
1116 int ib_query_device(struct ib_device
*device
,
1117 struct ib_device_attr
*device_attr
);
1119 int ib_query_port(struct ib_device
*device
,
1120 u8 port_num
, struct ib_port_attr
*port_attr
);
1122 int ib_query_gid(struct ib_device
*device
,
1123 u8 port_num
, int index
, union ib_gid
*gid
);
1125 int ib_query_pkey(struct ib_device
*device
,
1126 u8 port_num
, u16 index
, u16
*pkey
);
1128 int ib_modify_device(struct ib_device
*device
,
1129 int device_modify_mask
,
1130 struct ib_device_modify
*device_modify
);
1132 int ib_modify_port(struct ib_device
*device
,
1133 u8 port_num
, int port_modify_mask
,
1134 struct ib_port_modify
*port_modify
);
1137 * ib_alloc_pd - Allocates an unused protection domain.
1138 * @device: The device on which to allocate the protection domain.
1140 * A protection domain object provides an association between QPs, shared
1141 * receive queues, address handles, memory regions, and memory windows.
1143 struct ib_pd
*ib_alloc_pd(struct ib_device
*device
);
1146 * ib_dealloc_pd - Deallocates a protection domain.
1147 * @pd: The protection domain to deallocate.
1149 int ib_dealloc_pd(struct ib_pd
*pd
);
1152 * ib_create_ah - Creates an address handle for the given address vector.
1153 * @pd: The protection domain associated with the address handle.
1154 * @ah_attr: The attributes of the address vector.
1156 * The address handle is used to reference a local or global destination
1157 * in all UD QP post sends.
1159 struct ib_ah
*ib_create_ah(struct ib_pd
*pd
, struct ib_ah_attr
*ah_attr
);
1162 * ib_init_ah_from_wc - Initializes address handle attributes from a
1164 * @device: Device on which the received message arrived.
1165 * @port_num: Port on which the received message arrived.
1166 * @wc: Work completion associated with the received message.
1167 * @grh: References the received global route header. This parameter is
1168 * ignored unless the work completion indicates that the GRH is valid.
1169 * @ah_attr: Returned attributes that can be used when creating an address
1170 * handle for replying to the message.
1172 int ib_init_ah_from_wc(struct ib_device
*device
, u8 port_num
, struct ib_wc
*wc
,
1173 struct ib_grh
*grh
, struct ib_ah_attr
*ah_attr
);
1176 * ib_create_ah_from_wc - Creates an address handle associated with the
1177 * sender of the specified work completion.
1178 * @pd: The protection domain associated with the address handle.
1179 * @wc: Work completion information associated with a received message.
1180 * @grh: References the received global route header. This parameter is
1181 * ignored unless the work completion indicates that the GRH is valid.
1182 * @port_num: The outbound port number to associate with the address.
1184 * The address handle is used to reference a local or global destination
1185 * in all UD QP post sends.
1187 struct ib_ah
*ib_create_ah_from_wc(struct ib_pd
*pd
, struct ib_wc
*wc
,
1188 struct ib_grh
*grh
, u8 port_num
);
1191 * ib_modify_ah - Modifies the address vector associated with an address
1193 * @ah: The address handle to modify.
1194 * @ah_attr: The new address vector attributes to associate with the
1197 int ib_modify_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
1200 * ib_query_ah - Queries the address vector associated with an address
1202 * @ah: The address handle to query.
1203 * @ah_attr: The address vector attributes associated with the address
1206 int ib_query_ah(struct ib_ah
*ah
, struct ib_ah_attr
*ah_attr
);
1209 * ib_destroy_ah - Destroys an address handle.
1210 * @ah: The address handle to destroy.
1212 int ib_destroy_ah(struct ib_ah
*ah
);
1215 * ib_create_srq - Creates a SRQ associated with the specified protection
1217 * @pd: The protection domain associated with the SRQ.
1218 * @srq_init_attr: A list of initial attributes required to create the
1219 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1220 * the actual capabilities of the created SRQ.
1222 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1223 * requested size of the SRQ, and set to the actual values allocated
1224 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1225 * will always be at least as large as the requested values.
1227 struct ib_srq
*ib_create_srq(struct ib_pd
*pd
,
1228 struct ib_srq_init_attr
*srq_init_attr
);
1231 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1232 * @srq: The SRQ to modify.
1233 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1234 * the current values of selected SRQ attributes are returned.
1235 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1236 * are being modified.
1238 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1239 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1240 * the number of receives queued drops below the limit.
1242 int ib_modify_srq(struct ib_srq
*srq
,
1243 struct ib_srq_attr
*srq_attr
,
1244 enum ib_srq_attr_mask srq_attr_mask
);
1247 * ib_query_srq - Returns the attribute list and current values for the
1249 * @srq: The SRQ to query.
1250 * @srq_attr: The attributes of the specified SRQ.
1252 int ib_query_srq(struct ib_srq
*srq
,
1253 struct ib_srq_attr
*srq_attr
);
1256 * ib_destroy_srq - Destroys the specified SRQ.
1257 * @srq: The SRQ to destroy.
1259 int ib_destroy_srq(struct ib_srq
*srq
);
1262 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1263 * @srq: The SRQ to post the work request on.
1264 * @recv_wr: A list of work requests to post on the receive queue.
1265 * @bad_recv_wr: On an immediate failure, this parameter will reference
1266 * the work request that failed to be posted on the QP.
1268 static inline int ib_post_srq_recv(struct ib_srq
*srq
,
1269 struct ib_recv_wr
*recv_wr
,
1270 struct ib_recv_wr
**bad_recv_wr
)
1272 return srq
->device
->post_srq_recv(srq
, recv_wr
, bad_recv_wr
);
1276 * ib_create_qp - Creates a QP associated with the specified protection
1278 * @pd: The protection domain associated with the QP.
1279 * @qp_init_attr: A list of initial attributes required to create the
1280 * QP. If QP creation succeeds, then the attributes are updated to
1281 * the actual capabilities of the created QP.
1283 struct ib_qp
*ib_create_qp(struct ib_pd
*pd
,
1284 struct ib_qp_init_attr
*qp_init_attr
);
1287 * ib_modify_qp - Modifies the attributes for the specified QP and then
1288 * transitions the QP to the given state.
1289 * @qp: The QP to modify.
1290 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1291 * the current values of selected QP attributes are returned.
1292 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1293 * are being modified.
1295 int ib_modify_qp(struct ib_qp
*qp
,
1296 struct ib_qp_attr
*qp_attr
,
1300 * ib_query_qp - Returns the attribute list and current values for the
1302 * @qp: The QP to query.
1303 * @qp_attr: The attributes of the specified QP.
1304 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1305 * @qp_init_attr: Additional attributes of the selected QP.
1307 * The qp_attr_mask may be used to limit the query to gathering only the
1308 * selected attributes.
1310 int ib_query_qp(struct ib_qp
*qp
,
1311 struct ib_qp_attr
*qp_attr
,
1313 struct ib_qp_init_attr
*qp_init_attr
);
1316 * ib_destroy_qp - Destroys the specified QP.
1317 * @qp: The QP to destroy.
1319 int ib_destroy_qp(struct ib_qp
*qp
);
1322 * ib_post_send - Posts a list of work requests to the send queue of
1324 * @qp: The QP to post the work request on.
1325 * @send_wr: A list of work requests to post on the send queue.
1326 * @bad_send_wr: On an immediate failure, this parameter will reference
1327 * the work request that failed to be posted on the QP.
1329 static inline int ib_post_send(struct ib_qp
*qp
,
1330 struct ib_send_wr
*send_wr
,
1331 struct ib_send_wr
**bad_send_wr
)
1333 return qp
->device
->post_send(qp
, send_wr
, bad_send_wr
);
1337 * ib_post_recv - Posts a list of work requests to the receive queue of
1339 * @qp: The QP to post the work request on.
1340 * @recv_wr: A list of work requests to post on the receive queue.
1341 * @bad_recv_wr: On an immediate failure, this parameter will reference
1342 * the work request that failed to be posted on the QP.
1344 static inline int ib_post_recv(struct ib_qp
*qp
,
1345 struct ib_recv_wr
*recv_wr
,
1346 struct ib_recv_wr
**bad_recv_wr
)
1348 return qp
->device
->post_recv(qp
, recv_wr
, bad_recv_wr
);
1352 * ib_create_cq - Creates a CQ on the specified device.
1353 * @device: The device on which to create the CQ.
1354 * @comp_handler: A user-specified callback that is invoked when a
1355 * completion event occurs on the CQ.
1356 * @event_handler: A user-specified callback that is invoked when an
1357 * asynchronous event not associated with a completion occurs on the CQ.
1358 * @cq_context: Context associated with the CQ returned to the user via
1359 * the associated completion and event handlers.
1360 * @cqe: The minimum size of the CQ.
1362 * Users can examine the cq structure to determine the actual CQ size.
1364 struct ib_cq
*ib_create_cq(struct ib_device
*device
,
1365 ib_comp_handler comp_handler
,
1366 void (*event_handler
)(struct ib_event
*, void *),
1367 void *cq_context
, int cqe
);
1370 * ib_resize_cq - Modifies the capacity of the CQ.
1371 * @cq: The CQ to resize.
1372 * @cqe: The minimum size of the CQ.
1374 * Users can examine the cq structure to determine the actual CQ size.
1376 int ib_resize_cq(struct ib_cq
*cq
, int cqe
);
1379 * ib_destroy_cq - Destroys the specified CQ.
1380 * @cq: The CQ to destroy.
1382 int ib_destroy_cq(struct ib_cq
*cq
);
1385 * ib_poll_cq - poll a CQ for completion(s)
1386 * @cq:the CQ being polled
1387 * @num_entries:maximum number of completions to return
1388 * @wc:array of at least @num_entries &struct ib_wc where completions
1391 * Poll a CQ for (possibly multiple) completions. If the return value
1392 * is < 0, an error occurred. If the return value is >= 0, it is the
1393 * number of completions returned. If the return value is
1394 * non-negative and < num_entries, then the CQ was emptied.
1396 static inline int ib_poll_cq(struct ib_cq
*cq
, int num_entries
,
1399 return cq
->device
->poll_cq(cq
, num_entries
, wc
);
1403 * ib_peek_cq - Returns the number of unreaped completions currently
1404 * on the specified CQ.
1405 * @cq: The CQ to peek.
1406 * @wc_cnt: A minimum number of unreaped completions to check for.
1408 * If the number of unreaped completions is greater than or equal to wc_cnt,
1409 * this function returns wc_cnt, otherwise, it returns the actual number of
1410 * unreaped completions.
1412 int ib_peek_cq(struct ib_cq
*cq
, int wc_cnt
);
1415 * ib_req_notify_cq - Request completion notification on a CQ.
1416 * @cq: The CQ to generate an event for.
1417 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1418 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1419 * notification will occur on the next completion.
1421 static inline int ib_req_notify_cq(struct ib_cq
*cq
,
1422 enum ib_cq_notify cq_notify
)
1424 return cq
->device
->req_notify_cq(cq
, cq_notify
);
1428 * ib_req_ncomp_notif - Request completion notification when there are
1429 * at least the specified number of unreaped completions on the CQ.
1430 * @cq: The CQ to generate an event for.
1431 * @wc_cnt: The number of unreaped completions that should be on the
1432 * CQ before an event is generated.
1434 static inline int ib_req_ncomp_notif(struct ib_cq
*cq
, int wc_cnt
)
1436 return cq
->device
->req_ncomp_notif
?
1437 cq
->device
->req_ncomp_notif(cq
, wc_cnt
) :
1442 * ib_get_dma_mr - Returns a memory region for system memory that is
1444 * @pd: The protection domain associated with the memory region.
1445 * @mr_access_flags: Specifies the memory access rights.
1447 * Note that the ib_dma_*() functions defined below must be used
1448 * to create/destroy addresses used with the Lkey or Rkey returned
1449 * by ib_get_dma_mr().
1451 struct ib_mr
*ib_get_dma_mr(struct ib_pd
*pd
, int mr_access_flags
);
1454 * ib_dma_mapping_error - check a DMA addr for error
1455 * @dev: The device for which the dma_addr was created
1456 * @dma_addr: The DMA address to check
1458 static inline int ib_dma_mapping_error(struct ib_device
*dev
, u64 dma_addr
)
1461 return dev
->dma_ops
->mapping_error(dev
, dma_addr
);
1462 return dma_mapping_error(dma_addr
);
1466 * ib_dma_map_single - Map a kernel virtual address to DMA address
1467 * @dev: The device for which the dma_addr is to be created
1468 * @cpu_addr: The kernel virtual address
1469 * @size: The size of the region in bytes
1470 * @direction: The direction of the DMA
1472 static inline u64
ib_dma_map_single(struct ib_device
*dev
,
1473 void *cpu_addr
, size_t size
,
1474 enum dma_data_direction direction
)
1477 return dev
->dma_ops
->map_single(dev
, cpu_addr
, size
, direction
);
1478 return dma_map_single(dev
->dma_device
, cpu_addr
, size
, direction
);
1482 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1483 * @dev: The device for which the DMA address was created
1484 * @addr: The DMA address
1485 * @size: The size of the region in bytes
1486 * @direction: The direction of the DMA
1488 static inline void ib_dma_unmap_single(struct ib_device
*dev
,
1489 u64 addr
, size_t size
,
1490 enum dma_data_direction direction
)
1493 dev
->dma_ops
->unmap_single(dev
, addr
, size
, direction
);
1495 dma_unmap_single(dev
->dma_device
, addr
, size
, direction
);
1499 * ib_dma_map_page - Map a physical page to DMA address
1500 * @dev: The device for which the dma_addr is to be created
1501 * @page: The page to be mapped
1502 * @offset: The offset within the page
1503 * @size: The size of the region in bytes
1504 * @direction: The direction of the DMA
1506 static inline u64
ib_dma_map_page(struct ib_device
*dev
,
1508 unsigned long offset
,
1510 enum dma_data_direction direction
)
1513 return dev
->dma_ops
->map_page(dev
, page
, offset
, size
, direction
);
1514 return dma_map_page(dev
->dma_device
, page
, offset
, size
, direction
);
1518 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1519 * @dev: The device for which the DMA address was created
1520 * @addr: The DMA address
1521 * @size: The size of the region in bytes
1522 * @direction: The direction of the DMA
1524 static inline void ib_dma_unmap_page(struct ib_device
*dev
,
1525 u64 addr
, size_t size
,
1526 enum dma_data_direction direction
)
1529 dev
->dma_ops
->unmap_page(dev
, addr
, size
, direction
);
1531 dma_unmap_page(dev
->dma_device
, addr
, size
, direction
);
1535 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
1536 * @dev: The device for which the DMA addresses are to be created
1537 * @sg: The array of scatter/gather entries
1538 * @nents: The number of scatter/gather entries
1539 * @direction: The direction of the DMA
1541 static inline int ib_dma_map_sg(struct ib_device
*dev
,
1542 struct scatterlist
*sg
, int nents
,
1543 enum dma_data_direction direction
)
1546 return dev
->dma_ops
->map_sg(dev
, sg
, nents
, direction
);
1547 return dma_map_sg(dev
->dma_device
, sg
, nents
, direction
);
1551 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
1552 * @dev: The device for which the DMA addresses were created
1553 * @sg: The array of scatter/gather entries
1554 * @nents: The number of scatter/gather entries
1555 * @direction: The direction of the DMA
1557 static inline void ib_dma_unmap_sg(struct ib_device
*dev
,
1558 struct scatterlist
*sg
, int nents
,
1559 enum dma_data_direction direction
)
1562 dev
->dma_ops
->unmap_sg(dev
, sg
, nents
, direction
);
1564 dma_unmap_sg(dev
->dma_device
, sg
, nents
, direction
);
1568 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
1569 * @dev: The device for which the DMA addresses were created
1570 * @sg: The scatter/gather entry
1572 static inline u64
ib_sg_dma_address(struct ib_device
*dev
,
1573 struct scatterlist
*sg
)
1576 return dev
->dma_ops
->dma_address(dev
, sg
);
1577 return sg_dma_address(sg
);
1581 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
1582 * @dev: The device for which the DMA addresses were created
1583 * @sg: The scatter/gather entry
1585 static inline unsigned int ib_sg_dma_len(struct ib_device
*dev
,
1586 struct scatterlist
*sg
)
1589 return dev
->dma_ops
->dma_len(dev
, sg
);
1590 return sg_dma_len(sg
);
1594 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
1595 * @dev: The device for which the DMA address was created
1596 * @addr: The DMA address
1597 * @size: The size of the region in bytes
1598 * @dir: The direction of the DMA
1600 static inline void ib_dma_sync_single_for_cpu(struct ib_device
*dev
,
1603 enum dma_data_direction dir
)
1606 dev
->dma_ops
->sync_single_for_cpu(dev
, addr
, size
, dir
);
1608 dma_sync_single_for_cpu(dev
->dma_device
, addr
, size
, dir
);
1612 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
1613 * @dev: The device for which the DMA address was created
1614 * @addr: The DMA address
1615 * @size: The size of the region in bytes
1616 * @dir: The direction of the DMA
1618 static inline void ib_dma_sync_single_for_device(struct ib_device
*dev
,
1621 enum dma_data_direction dir
)
1624 dev
->dma_ops
->sync_single_for_device(dev
, addr
, size
, dir
);
1626 dma_sync_single_for_device(dev
->dma_device
, addr
, size
, dir
);
1630 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
1631 * @dev: The device for which the DMA address is requested
1632 * @size: The size of the region to allocate in bytes
1633 * @dma_handle: A pointer for returning the DMA address of the region
1634 * @flag: memory allocator flags
1636 static inline void *ib_dma_alloc_coherent(struct ib_device
*dev
,
1642 return dev
->dma_ops
->alloc_coherent(dev
, size
, dma_handle
, flag
);
1647 ret
= dma_alloc_coherent(dev
->dma_device
, size
, &handle
, flag
);
1648 *dma_handle
= handle
;
1654 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
1655 * @dev: The device for which the DMA addresses were allocated
1656 * @size: The size of the region
1657 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
1658 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
1660 static inline void ib_dma_free_coherent(struct ib_device
*dev
,
1661 size_t size
, void *cpu_addr
,
1665 dev
->dma_ops
->free_coherent(dev
, size
, cpu_addr
, dma_handle
);
1667 dma_free_coherent(dev
->dma_device
, size
, cpu_addr
, dma_handle
);
1671 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1673 * @pd: The protection domain associated assigned to the registered region.
1674 * @phys_buf_array: Specifies a list of physical buffers to use in the
1676 * @num_phys_buf: Specifies the size of the phys_buf_array.
1677 * @mr_access_flags: Specifies the memory access rights.
1678 * @iova_start: The offset of the region's starting I/O virtual address.
1680 struct ib_mr
*ib_reg_phys_mr(struct ib_pd
*pd
,
1681 struct ib_phys_buf
*phys_buf_array
,
1683 int mr_access_flags
,
1687 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1688 * Conceptually, this call performs the functions deregister memory region
1689 * followed by register physical memory region. Where possible,
1690 * resources are reused instead of deallocated and reallocated.
1691 * @mr: The memory region to modify.
1692 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1693 * properties of the memory region are being modified.
1694 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1695 * the new protection domain to associated with the memory region,
1696 * otherwise, this parameter is ignored.
1697 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1698 * field specifies a list of physical buffers to use in the new
1699 * translation, otherwise, this parameter is ignored.
1700 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1701 * field specifies the size of the phys_buf_array, otherwise, this
1702 * parameter is ignored.
1703 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1704 * field specifies the new memory access rights, otherwise, this
1705 * parameter is ignored.
1706 * @iova_start: The offset of the region's starting I/O virtual address.
1708 int ib_rereg_phys_mr(struct ib_mr
*mr
,
1711 struct ib_phys_buf
*phys_buf_array
,
1713 int mr_access_flags
,
1717 * ib_query_mr - Retrieves information about a specific memory region.
1718 * @mr: The memory region to retrieve information about.
1719 * @mr_attr: The attributes of the specified memory region.
1721 int ib_query_mr(struct ib_mr
*mr
, struct ib_mr_attr
*mr_attr
);
1724 * ib_dereg_mr - Deregisters a memory region and removes it from the
1725 * HCA translation table.
1726 * @mr: The memory region to deregister.
1728 int ib_dereg_mr(struct ib_mr
*mr
);
1731 * ib_alloc_mw - Allocates a memory window.
1732 * @pd: The protection domain associated with the memory window.
1734 struct ib_mw
*ib_alloc_mw(struct ib_pd
*pd
);
1737 * ib_bind_mw - Posts a work request to the send queue of the specified
1738 * QP, which binds the memory window to the given address range and
1739 * remote access attributes.
1740 * @qp: QP to post the bind work request on.
1741 * @mw: The memory window to bind.
1742 * @mw_bind: Specifies information about the memory window, including
1743 * its address range, remote access rights, and associated memory region.
1745 static inline int ib_bind_mw(struct ib_qp
*qp
,
1747 struct ib_mw_bind
*mw_bind
)
1749 /* XXX reference counting in corresponding MR? */
1750 return mw
->device
->bind_mw
?
1751 mw
->device
->bind_mw(qp
, mw
, mw_bind
) :
1756 * ib_dealloc_mw - Deallocates a memory window.
1757 * @mw: The memory window to deallocate.
1759 int ib_dealloc_mw(struct ib_mw
*mw
);
1762 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1763 * @pd: The protection domain associated with the unmapped region.
1764 * @mr_access_flags: Specifies the memory access rights.
1765 * @fmr_attr: Attributes of the unmapped region.
1767 * A fast memory region must be mapped before it can be used as part of
1770 struct ib_fmr
*ib_alloc_fmr(struct ib_pd
*pd
,
1771 int mr_access_flags
,
1772 struct ib_fmr_attr
*fmr_attr
);
1775 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1776 * @fmr: The fast memory region to associate with the pages.
1777 * @page_list: An array of physical pages to map to the fast memory region.
1778 * @list_len: The number of pages in page_list.
1779 * @iova: The I/O virtual address to use with the mapped region.
1781 static inline int ib_map_phys_fmr(struct ib_fmr
*fmr
,
1782 u64
*page_list
, int list_len
,
1785 return fmr
->device
->map_phys_fmr(fmr
, page_list
, list_len
, iova
);
1789 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1790 * @fmr_list: A linked list of fast memory regions to unmap.
1792 int ib_unmap_fmr(struct list_head
*fmr_list
);
1795 * ib_dealloc_fmr - Deallocates a fast memory region.
1796 * @fmr: The fast memory region to deallocate.
1798 int ib_dealloc_fmr(struct ib_fmr
*fmr
);
1801 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1802 * @qp: QP to attach to the multicast group. The QP must be type
1804 * @gid: Multicast group GID.
1805 * @lid: Multicast group LID in host byte order.
1807 * In order to send and receive multicast packets, subnet
1808 * administration must have created the multicast group and configured
1809 * the fabric appropriately. The port associated with the specified
1810 * QP must also be a member of the multicast group.
1812 int ib_attach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
1815 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1816 * @qp: QP to detach from the multicast group.
1817 * @gid: Multicast group GID.
1818 * @lid: Multicast group LID in host byte order.
1820 int ib_detach_mcast(struct ib_qp
*qp
, union ib_gid
*gid
, u16 lid
);
1822 #endif /* IB_VERBS_H */