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
39 #if !defined(IB_VERBS_H)
42 #include <linux/types.h>
43 #include <linux/device.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/kref.h>
47 #include <linux/list.h>
48 #include <linux/rwsem.h>
49 #include <linux/scatterlist.h>
50 #include <linux/workqueue.h>
52 #include <linux/atomic.h>
53 #include <asm/uaccess.h>
55 extern struct workqueue_struct *ib_wq;
66 /* IB values map to NodeInfo:NodeType. */
73 enum rdma_transport_type {
78 enum rdma_transport_type
79 rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__;
81 enum rdma_link_layer {
82 IB_LINK_LAYER_UNSPECIFIED,
83 IB_LINK_LAYER_INFINIBAND,
84 IB_LINK_LAYER_ETHERNET,
87 enum ib_device_cap_flags {
88 IB_DEVICE_RESIZE_MAX_WR = 1,
89 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
90 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
91 IB_DEVICE_RAW_MULTI = (1<<3),
92 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
93 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
94 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
95 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
96 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
97 IB_DEVICE_INIT_TYPE = (1<<9),
98 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
99 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
100 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
101 IB_DEVICE_SRQ_RESIZE = (1<<13),
102 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
103 IB_DEVICE_LOCAL_DMA_LKEY = (1<<15),
104 IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */
105 IB_DEVICE_MEM_WINDOW = (1<<17),
107 * Devices should set IB_DEVICE_UD_IP_SUM if they support
108 * insertion of UDP and TCP checksum on outgoing UD IPoIB
109 * messages and can verify the validity of checksum for
110 * incoming messages. Setting this flag implies that the
111 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
113 IB_DEVICE_UD_IP_CSUM = (1<<18),
114 IB_DEVICE_UD_TSO = (1<<19),
115 IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21),
116 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22),
125 struct ib_device_attr {
127 __be64 sys_image_guid;
135 int device_cap_flags;
145 int max_qp_init_rd_atom;
146 int max_ee_init_rd_atom;
147 enum ib_atomic_cap atomic_cap;
148 enum ib_atomic_cap masked_atomic_cap;
155 int max_mcast_qp_attach;
156 int max_total_mcast_qp_attach;
163 unsigned int max_fast_reg_page_list_len;
165 u8 local_ca_ack_delay;
176 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
179 case IB_MTU_256: return 256;
180 case IB_MTU_512: return 512;
181 case IB_MTU_1024: return 1024;
182 case IB_MTU_2048: return 2048;
183 case IB_MTU_4096: return 4096;
194 IB_PORT_ACTIVE_DEFER = 5
197 enum ib_port_cap_flags {
199 IB_PORT_NOTICE_SUP = 1 << 2,
200 IB_PORT_TRAP_SUP = 1 << 3,
201 IB_PORT_OPT_IPD_SUP = 1 << 4,
202 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
203 IB_PORT_SL_MAP_SUP = 1 << 6,
204 IB_PORT_MKEY_NVRAM = 1 << 7,
205 IB_PORT_PKEY_NVRAM = 1 << 8,
206 IB_PORT_LED_INFO_SUP = 1 << 9,
207 IB_PORT_SM_DISABLED = 1 << 10,
208 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
209 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
210 IB_PORT_CM_SUP = 1 << 16,
211 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
212 IB_PORT_REINIT_SUP = 1 << 18,
213 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
214 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
215 IB_PORT_DR_NOTICE_SUP = 1 << 21,
216 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
217 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
218 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
219 IB_PORT_CLIENT_REG_SUP = 1 << 25
229 static inline int ib_width_enum_to_int(enum ib_port_width width)
232 case IB_WIDTH_1X: return 1;
233 case IB_WIDTH_4X: return 4;
234 case IB_WIDTH_8X: return 8;
235 case IB_WIDTH_12X: return 12;
240 struct ib_protocol_stats {
244 struct iw_protocol_stats {
247 u64 ipInTooBigErrors;
250 u64 ipInUnknownProtos;
251 u64 ipInTruncatedPkts;
254 u64 ipOutForwDatagrams;
286 union rdma_protocol_stats {
287 struct ib_protocol_stats ib;
288 struct iw_protocol_stats iw;
291 struct ib_port_attr {
292 enum ib_port_state state;
294 enum ib_mtu active_mtu;
313 enum ib_device_modify_flags {
314 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
315 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
318 struct ib_device_modify {
323 enum ib_port_modify_flags {
324 IB_PORT_SHUTDOWN = 1,
325 IB_PORT_INIT_TYPE = (1<<2),
326 IB_PORT_RESET_QKEY_CNTR = (1<<3)
329 struct ib_port_modify {
330 u32 set_port_cap_mask;
331 u32 clr_port_cap_mask;
339 IB_EVENT_QP_ACCESS_ERR,
343 IB_EVENT_PATH_MIG_ERR,
344 IB_EVENT_DEVICE_FATAL,
345 IB_EVENT_PORT_ACTIVE,
348 IB_EVENT_PKEY_CHANGE,
351 IB_EVENT_SRQ_LIMIT_REACHED,
352 IB_EVENT_QP_LAST_WQE_REACHED,
353 IB_EVENT_CLIENT_REREGISTER,
358 struct ib_device *device;
365 enum ib_event_type event;
368 struct ib_event_handler {
369 struct ib_device *device;
370 void (*handler)(struct ib_event_handler *, struct ib_event *);
371 struct list_head list;
374 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
376 (_ptr)->device = _device; \
377 (_ptr)->handler = _handler; \
378 INIT_LIST_HEAD(&(_ptr)->list); \
381 struct ib_global_route {
390 __be32 version_tclass_flow;
399 IB_MULTICAST_QPN = 0xffffff
402 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
409 IB_RATE_PORT_CURRENT = 0,
410 IB_RATE_2_5_GBPS = 2,
418 IB_RATE_120_GBPS = 10
422 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
423 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
424 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
425 * @rate: rate to convert.
427 int ib_rate_to_mult(enum ib_rate rate) __attribute_const__;
430 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
432 * @mult: multiple to convert.
434 enum ib_rate mult_to_ib_rate(int mult) __attribute_const__;
437 struct ib_global_route grh;
450 IB_WC_LOC_EEC_OP_ERR,
455 IB_WC_LOC_ACCESS_ERR,
456 IB_WC_REM_INV_REQ_ERR,
457 IB_WC_REM_ACCESS_ERR,
460 IB_WC_RNR_RETRY_EXC_ERR,
461 IB_WC_LOC_RDD_VIOL_ERR,
462 IB_WC_REM_INV_RD_REQ_ERR,
465 IB_WC_INV_EEC_STATE_ERR,
467 IB_WC_RESP_TIMEOUT_ERR,
481 IB_WC_MASKED_COMP_SWAP,
482 IB_WC_MASKED_FETCH_ADD,
484 * Set value of IB_WC_RECV so consumers can test if a completion is a
485 * receive by testing (opcode & IB_WC_RECV).
488 IB_WC_RECV_RDMA_WITH_IMM
493 IB_WC_WITH_IMM = (1<<1),
494 IB_WC_WITH_INVALIDATE = (1<<2),
499 enum ib_wc_status status;
500 enum ib_wc_opcode opcode;
514 u8 port_num; /* valid only for DR SMPs on switches */
518 enum ib_cq_notify_flags {
519 IB_CQ_SOLICITED = 1 << 0,
520 IB_CQ_NEXT_COMP = 1 << 1,
521 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
522 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
525 enum ib_srq_attr_mask {
526 IB_SRQ_MAX_WR = 1 << 0,
527 IB_SRQ_LIMIT = 1 << 1,
536 struct ib_srq_init_attr {
537 void (*event_handler)(struct ib_event *, void *);
539 struct ib_srq_attr attr;
557 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
558 * here (and in that order) since the MAD layer uses them as
559 * indices into a 2-entry table.
571 enum ib_qp_create_flags {
572 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
573 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
576 struct ib_qp_init_attr {
577 void (*event_handler)(struct ib_event *, void *);
579 struct ib_cq *send_cq;
580 struct ib_cq *recv_cq;
582 struct ib_qp_cap cap;
583 enum ib_sig_type sq_sig_type;
584 enum ib_qp_type qp_type;
585 enum ib_qp_create_flags create_flags;
586 u8 port_num; /* special QP types only */
589 enum ib_rnr_timeout {
590 IB_RNR_TIMER_655_36 = 0,
591 IB_RNR_TIMER_000_01 = 1,
592 IB_RNR_TIMER_000_02 = 2,
593 IB_RNR_TIMER_000_03 = 3,
594 IB_RNR_TIMER_000_04 = 4,
595 IB_RNR_TIMER_000_06 = 5,
596 IB_RNR_TIMER_000_08 = 6,
597 IB_RNR_TIMER_000_12 = 7,
598 IB_RNR_TIMER_000_16 = 8,
599 IB_RNR_TIMER_000_24 = 9,
600 IB_RNR_TIMER_000_32 = 10,
601 IB_RNR_TIMER_000_48 = 11,
602 IB_RNR_TIMER_000_64 = 12,
603 IB_RNR_TIMER_000_96 = 13,
604 IB_RNR_TIMER_001_28 = 14,
605 IB_RNR_TIMER_001_92 = 15,
606 IB_RNR_TIMER_002_56 = 16,
607 IB_RNR_TIMER_003_84 = 17,
608 IB_RNR_TIMER_005_12 = 18,
609 IB_RNR_TIMER_007_68 = 19,
610 IB_RNR_TIMER_010_24 = 20,
611 IB_RNR_TIMER_015_36 = 21,
612 IB_RNR_TIMER_020_48 = 22,
613 IB_RNR_TIMER_030_72 = 23,
614 IB_RNR_TIMER_040_96 = 24,
615 IB_RNR_TIMER_061_44 = 25,
616 IB_RNR_TIMER_081_92 = 26,
617 IB_RNR_TIMER_122_88 = 27,
618 IB_RNR_TIMER_163_84 = 28,
619 IB_RNR_TIMER_245_76 = 29,
620 IB_RNR_TIMER_327_68 = 30,
621 IB_RNR_TIMER_491_52 = 31
624 enum ib_qp_attr_mask {
626 IB_QP_CUR_STATE = (1<<1),
627 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
628 IB_QP_ACCESS_FLAGS = (1<<3),
629 IB_QP_PKEY_INDEX = (1<<4),
633 IB_QP_PATH_MTU = (1<<8),
634 IB_QP_TIMEOUT = (1<<9),
635 IB_QP_RETRY_CNT = (1<<10),
636 IB_QP_RNR_RETRY = (1<<11),
637 IB_QP_RQ_PSN = (1<<12),
638 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
639 IB_QP_ALT_PATH = (1<<14),
640 IB_QP_MIN_RNR_TIMER = (1<<15),
641 IB_QP_SQ_PSN = (1<<16),
642 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
643 IB_QP_PATH_MIG_STATE = (1<<18),
645 IB_QP_DEST_QPN = (1<<20)
665 enum ib_qp_state qp_state;
666 enum ib_qp_state cur_qp_state;
667 enum ib_mtu path_mtu;
668 enum ib_mig_state path_mig_state;
674 struct ib_qp_cap cap;
675 struct ib_ah_attr ah_attr;
676 struct ib_ah_attr alt_ah_attr;
679 u8 en_sqd_async_notify;
682 u8 max_dest_rd_atomic;
694 IB_WR_RDMA_WRITE_WITH_IMM,
698 IB_WR_ATOMIC_CMP_AND_SWP,
699 IB_WR_ATOMIC_FETCH_AND_ADD,
702 IB_WR_RDMA_READ_WITH_INV,
705 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
706 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
711 IB_SEND_SIGNALED = (1<<1),
712 IB_SEND_SOLICITED = (1<<2),
713 IB_SEND_INLINE = (1<<3),
714 IB_SEND_IP_CSUM = (1<<4)
723 struct ib_fast_reg_page_list {
724 struct ib_device *device;
726 unsigned int max_page_list_len;
730 struct ib_send_wr *next;
732 struct ib_sge *sg_list;
734 enum ib_wr_opcode opcode;
749 u64 compare_add_mask;
760 u16 pkey_index; /* valid for GSI only */
761 u8 port_num; /* valid for DR SMPs on switch only */
765 struct ib_fast_reg_page_list *page_list;
766 unsigned int page_shift;
767 unsigned int page_list_len;
776 struct ib_recv_wr *next;
778 struct ib_sge *sg_list;
782 enum ib_access_flags {
783 IB_ACCESS_LOCAL_WRITE = 1,
784 IB_ACCESS_REMOTE_WRITE = (1<<1),
785 IB_ACCESS_REMOTE_READ = (1<<2),
786 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
787 IB_ACCESS_MW_BIND = (1<<4)
797 u64 device_virt_addr;
804 enum ib_mr_rereg_flags {
805 IB_MR_REREG_TRANS = 1,
806 IB_MR_REREG_PD = (1<<1),
807 IB_MR_REREG_ACCESS = (1<<2)
826 struct ib_device *device;
827 struct list_head pd_list;
828 struct list_head mr_list;
829 struct list_head mw_list;
830 struct list_head cq_list;
831 struct list_head qp_list;
832 struct list_head srq_list;
833 struct list_head ah_list;
838 u64 user_handle; /* handle given to us by userspace */
839 struct ib_ucontext *context; /* associated user context */
840 void *object; /* containing object */
841 struct list_head list; /* link to context's list */
842 int id; /* index into kernel idr */
844 struct rw_semaphore mutex; /* protects .live */
856 struct ib_device *device;
857 struct ib_uobject *uobject;
858 atomic_t usecnt; /* count all resources */
862 struct ib_device *device;
864 struct ib_uobject *uobject;
867 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
870 struct ib_device *device;
871 struct ib_uobject *uobject;
872 ib_comp_handler comp_handler;
873 void (*event_handler)(struct ib_event *, void *);
876 atomic_t usecnt; /* count number of work queues */
880 struct ib_device *device;
882 struct ib_uobject *uobject;
883 void (*event_handler)(struct ib_event *, void *);
889 struct ib_device *device;
891 struct ib_cq *send_cq;
892 struct ib_cq *recv_cq;
894 struct ib_uobject *uobject;
895 void (*event_handler)(struct ib_event *, void *);
898 enum ib_qp_type qp_type;
902 struct ib_device *device;
904 struct ib_uobject *uobject;
907 atomic_t usecnt; /* count number of MWs */
911 struct ib_device *device;
913 struct ib_uobject *uobject;
918 struct ib_device *device;
920 struct list_head list;
928 enum ib_process_mad_flags {
929 IB_MAD_IGNORE_MKEY = 1,
930 IB_MAD_IGNORE_BKEY = 2,
931 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
935 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
936 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
937 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
938 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
941 #define IB_DEVICE_NAME_MAX 64
945 struct ib_event_handler event_handler;
946 struct ib_pkey_cache **pkey_cache;
947 struct ib_gid_cache **gid_cache;
951 struct ib_dma_mapping_ops {
952 int (*mapping_error)(struct ib_device *dev,
954 u64 (*map_single)(struct ib_device *dev,
955 void *ptr, size_t size,
956 enum dma_data_direction direction);
957 void (*unmap_single)(struct ib_device *dev,
958 u64 addr, size_t size,
959 enum dma_data_direction direction);
960 u64 (*map_page)(struct ib_device *dev,
961 struct page *page, unsigned long offset,
963 enum dma_data_direction direction);
964 void (*unmap_page)(struct ib_device *dev,
965 u64 addr, size_t size,
966 enum dma_data_direction direction);
967 int (*map_sg)(struct ib_device *dev,
968 struct scatterlist *sg, int nents,
969 enum dma_data_direction direction);
970 void (*unmap_sg)(struct ib_device *dev,
971 struct scatterlist *sg, int nents,
972 enum dma_data_direction direction);
973 u64 (*dma_address)(struct ib_device *dev,
974 struct scatterlist *sg);
975 unsigned int (*dma_len)(struct ib_device *dev,
976 struct scatterlist *sg);
977 void (*sync_single_for_cpu)(struct ib_device *dev,
980 enum dma_data_direction dir);
981 void (*sync_single_for_device)(struct ib_device *dev,
984 enum dma_data_direction dir);
985 void *(*alloc_coherent)(struct ib_device *dev,
989 void (*free_coherent)(struct ib_device *dev,
990 size_t size, void *cpu_addr,
997 struct device *dma_device;
999 char name[IB_DEVICE_NAME_MAX];
1001 struct list_head event_handler_list;
1002 spinlock_t event_handler_lock;
1004 spinlock_t client_data_lock;
1005 struct list_head core_list;
1006 struct list_head client_data_list;
1008 struct ib_cache cache;
1012 int num_comp_vectors;
1014 struct iw_cm_verbs *iwcm;
1016 int (*get_protocol_stats)(struct ib_device *device,
1017 union rdma_protocol_stats *stats);
1018 int (*query_device)(struct ib_device *device,
1019 struct ib_device_attr *device_attr);
1020 int (*query_port)(struct ib_device *device,
1022 struct ib_port_attr *port_attr);
1023 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1025 int (*query_gid)(struct ib_device *device,
1026 u8 port_num, int index,
1028 int (*query_pkey)(struct ib_device *device,
1029 u8 port_num, u16 index, u16 *pkey);
1030 int (*modify_device)(struct ib_device *device,
1031 int device_modify_mask,
1032 struct ib_device_modify *device_modify);
1033 int (*modify_port)(struct ib_device *device,
1034 u8 port_num, int port_modify_mask,
1035 struct ib_port_modify *port_modify);
1036 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1037 struct ib_udata *udata);
1038 int (*dealloc_ucontext)(struct ib_ucontext *context);
1039 int (*mmap)(struct ib_ucontext *context,
1040 struct vm_area_struct *vma);
1041 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1042 struct ib_ucontext *context,
1043 struct ib_udata *udata);
1044 int (*dealloc_pd)(struct ib_pd *pd);
1045 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1046 struct ib_ah_attr *ah_attr);
1047 int (*modify_ah)(struct ib_ah *ah,
1048 struct ib_ah_attr *ah_attr);
1049 int (*query_ah)(struct ib_ah *ah,
1050 struct ib_ah_attr *ah_attr);
1051 int (*destroy_ah)(struct ib_ah *ah);
1052 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1053 struct ib_srq_init_attr *srq_init_attr,
1054 struct ib_udata *udata);
1055 int (*modify_srq)(struct ib_srq *srq,
1056 struct ib_srq_attr *srq_attr,
1057 enum ib_srq_attr_mask srq_attr_mask,
1058 struct ib_udata *udata);
1059 int (*query_srq)(struct ib_srq *srq,
1060 struct ib_srq_attr *srq_attr);
1061 int (*destroy_srq)(struct ib_srq *srq);
1062 int (*post_srq_recv)(struct ib_srq *srq,
1063 struct ib_recv_wr *recv_wr,
1064 struct ib_recv_wr **bad_recv_wr);
1065 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1066 struct ib_qp_init_attr *qp_init_attr,
1067 struct ib_udata *udata);
1068 int (*modify_qp)(struct ib_qp *qp,
1069 struct ib_qp_attr *qp_attr,
1071 struct ib_udata *udata);
1072 int (*query_qp)(struct ib_qp *qp,
1073 struct ib_qp_attr *qp_attr,
1075 struct ib_qp_init_attr *qp_init_attr);
1076 int (*destroy_qp)(struct ib_qp *qp);
1077 int (*post_send)(struct ib_qp *qp,
1078 struct ib_send_wr *send_wr,
1079 struct ib_send_wr **bad_send_wr);
1080 int (*post_recv)(struct ib_qp *qp,
1081 struct ib_recv_wr *recv_wr,
1082 struct ib_recv_wr **bad_recv_wr);
1083 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
1085 struct ib_ucontext *context,
1086 struct ib_udata *udata);
1087 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1089 int (*destroy_cq)(struct ib_cq *cq);
1090 int (*resize_cq)(struct ib_cq *cq, int cqe,
1091 struct ib_udata *udata);
1092 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1094 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1095 int (*req_notify_cq)(struct ib_cq *cq,
1096 enum ib_cq_notify_flags flags);
1097 int (*req_ncomp_notif)(struct ib_cq *cq,
1099 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1100 int mr_access_flags);
1101 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
1102 struct ib_phys_buf *phys_buf_array,
1104 int mr_access_flags,
1106 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1107 u64 start, u64 length,
1109 int mr_access_flags,
1110 struct ib_udata *udata);
1111 int (*query_mr)(struct ib_mr *mr,
1112 struct ib_mr_attr *mr_attr);
1113 int (*dereg_mr)(struct ib_mr *mr);
1114 struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
1115 int max_page_list_len);
1116 struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
1118 void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
1119 int (*rereg_phys_mr)(struct ib_mr *mr,
1122 struct ib_phys_buf *phys_buf_array,
1124 int mr_access_flags,
1126 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
1127 int (*bind_mw)(struct ib_qp *qp,
1129 struct ib_mw_bind *mw_bind);
1130 int (*dealloc_mw)(struct ib_mw *mw);
1131 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1132 int mr_access_flags,
1133 struct ib_fmr_attr *fmr_attr);
1134 int (*map_phys_fmr)(struct ib_fmr *fmr,
1135 u64 *page_list, int list_len,
1137 int (*unmap_fmr)(struct list_head *fmr_list);
1138 int (*dealloc_fmr)(struct ib_fmr *fmr);
1139 int (*attach_mcast)(struct ib_qp *qp,
1142 int (*detach_mcast)(struct ib_qp *qp,
1145 int (*process_mad)(struct ib_device *device,
1146 int process_mad_flags,
1148 struct ib_wc *in_wc,
1149 struct ib_grh *in_grh,
1150 struct ib_mad *in_mad,
1151 struct ib_mad *out_mad);
1153 struct ib_dma_mapping_ops *dma_ops;
1155 struct module *owner;
1157 struct kobject *ports_parent;
1158 struct list_head port_list;
1161 IB_DEV_UNINITIALIZED,
1167 u64 uverbs_cmd_mask;
1178 void (*add) (struct ib_device *);
1179 void (*remove)(struct ib_device *);
1181 struct list_head list;
1184 struct ib_device *ib_alloc_device(size_t size);
1185 void ib_dealloc_device(struct ib_device *device);
1187 int ib_register_device(struct ib_device *device,
1188 int (*port_callback)(struct ib_device *,
1189 u8, struct kobject *));
1190 void ib_unregister_device(struct ib_device *device);
1192 int ib_register_client (struct ib_client *client);
1193 void ib_unregister_client(struct ib_client *client);
1195 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1196 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1199 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1201 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1204 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1206 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1210 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1211 * contains all required attributes and no attributes not allowed for
1212 * the given QP state transition.
1213 * @cur_state: Current QP state
1214 * @next_state: Next QP state
1216 * @mask: Mask of supplied QP attributes
1218 * This function is a helper function that a low-level driver's
1219 * modify_qp method can use to validate the consumer's input. It
1220 * checks that cur_state and next_state are valid QP states, that a
1221 * transition from cur_state to next_state is allowed by the IB spec,
1222 * and that the attribute mask supplied is allowed for the transition.
1224 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1225 enum ib_qp_type type, enum ib_qp_attr_mask mask);
1227 int ib_register_event_handler (struct ib_event_handler *event_handler);
1228 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1229 void ib_dispatch_event(struct ib_event *event);
1231 int ib_query_device(struct ib_device *device,
1232 struct ib_device_attr *device_attr);
1234 int ib_query_port(struct ib_device *device,
1235 u8 port_num, struct ib_port_attr *port_attr);
1237 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
1240 int ib_query_gid(struct ib_device *device,
1241 u8 port_num, int index, union ib_gid *gid);
1243 int ib_query_pkey(struct ib_device *device,
1244 u8 port_num, u16 index, u16 *pkey);
1246 int ib_modify_device(struct ib_device *device,
1247 int device_modify_mask,
1248 struct ib_device_modify *device_modify);
1250 int ib_modify_port(struct ib_device *device,
1251 u8 port_num, int port_modify_mask,
1252 struct ib_port_modify *port_modify);
1254 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1255 u8 *port_num, u16 *index);
1257 int ib_find_pkey(struct ib_device *device,
1258 u8 port_num, u16 pkey, u16 *index);
1261 * ib_alloc_pd - Allocates an unused protection domain.
1262 * @device: The device on which to allocate the protection domain.
1264 * A protection domain object provides an association between QPs, shared
1265 * receive queues, address handles, memory regions, and memory windows.
1267 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1270 * ib_dealloc_pd - Deallocates a protection domain.
1271 * @pd: The protection domain to deallocate.
1273 int ib_dealloc_pd(struct ib_pd *pd);
1276 * ib_create_ah - Creates an address handle for the given address vector.
1277 * @pd: The protection domain associated with the address handle.
1278 * @ah_attr: The attributes of the address vector.
1280 * The address handle is used to reference a local or global destination
1281 * in all UD QP post sends.
1283 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1286 * ib_init_ah_from_wc - Initializes address handle attributes from a
1288 * @device: Device on which the received message arrived.
1289 * @port_num: Port on which the received message arrived.
1290 * @wc: Work completion associated with the received message.
1291 * @grh: References the received global route header. This parameter is
1292 * ignored unless the work completion indicates that the GRH is valid.
1293 * @ah_attr: Returned attributes that can be used when creating an address
1294 * handle for replying to the message.
1296 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1297 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1300 * ib_create_ah_from_wc - Creates an address handle associated with the
1301 * sender of the specified work completion.
1302 * @pd: The protection domain associated with the address handle.
1303 * @wc: Work completion information associated with a received message.
1304 * @grh: References the received global route header. This parameter is
1305 * ignored unless the work completion indicates that the GRH is valid.
1306 * @port_num: The outbound port number to associate with the address.
1308 * The address handle is used to reference a local or global destination
1309 * in all UD QP post sends.
1311 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1312 struct ib_grh *grh, u8 port_num);
1315 * ib_modify_ah - Modifies the address vector associated with an address
1317 * @ah: The address handle to modify.
1318 * @ah_attr: The new address vector attributes to associate with the
1321 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1324 * ib_query_ah - Queries the address vector associated with an address
1326 * @ah: The address handle to query.
1327 * @ah_attr: The address vector attributes associated with the address
1330 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1333 * ib_destroy_ah - Destroys an address handle.
1334 * @ah: The address handle to destroy.
1336 int ib_destroy_ah(struct ib_ah *ah);
1339 * ib_create_srq - Creates a SRQ associated with the specified protection
1341 * @pd: The protection domain associated with the SRQ.
1342 * @srq_init_attr: A list of initial attributes required to create the
1343 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1344 * the actual capabilities of the created SRQ.
1346 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1347 * requested size of the SRQ, and set to the actual values allocated
1348 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1349 * will always be at least as large as the requested values.
1351 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1352 struct ib_srq_init_attr *srq_init_attr);
1355 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1356 * @srq: The SRQ to modify.
1357 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1358 * the current values of selected SRQ attributes are returned.
1359 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1360 * are being modified.
1362 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1363 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1364 * the number of receives queued drops below the limit.
1366 int ib_modify_srq(struct ib_srq *srq,
1367 struct ib_srq_attr *srq_attr,
1368 enum ib_srq_attr_mask srq_attr_mask);
1371 * ib_query_srq - Returns the attribute list and current values for the
1373 * @srq: The SRQ to query.
1374 * @srq_attr: The attributes of the specified SRQ.
1376 int ib_query_srq(struct ib_srq *srq,
1377 struct ib_srq_attr *srq_attr);
1380 * ib_destroy_srq - Destroys the specified SRQ.
1381 * @srq: The SRQ to destroy.
1383 int ib_destroy_srq(struct ib_srq *srq);
1386 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1387 * @srq: The SRQ to post the work request on.
1388 * @recv_wr: A list of work requests to post on the receive queue.
1389 * @bad_recv_wr: On an immediate failure, this parameter will reference
1390 * the work request that failed to be posted on the QP.
1392 static inline int ib_post_srq_recv(struct ib_srq *srq,
1393 struct ib_recv_wr *recv_wr,
1394 struct ib_recv_wr **bad_recv_wr)
1396 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1400 * ib_create_qp - Creates a QP associated with the specified protection
1402 * @pd: The protection domain associated with the QP.
1403 * @qp_init_attr: A list of initial attributes required to create the
1404 * QP. If QP creation succeeds, then the attributes are updated to
1405 * the actual capabilities of the created QP.
1407 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1408 struct ib_qp_init_attr *qp_init_attr);
1411 * ib_modify_qp - Modifies the attributes for the specified QP and then
1412 * transitions the QP to the given state.
1413 * @qp: The QP to modify.
1414 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1415 * the current values of selected QP attributes are returned.
1416 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1417 * are being modified.
1419 int ib_modify_qp(struct ib_qp *qp,
1420 struct ib_qp_attr *qp_attr,
1424 * ib_query_qp - Returns the attribute list and current values for the
1426 * @qp: The QP to query.
1427 * @qp_attr: The attributes of the specified QP.
1428 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1429 * @qp_init_attr: Additional attributes of the selected QP.
1431 * The qp_attr_mask may be used to limit the query to gathering only the
1432 * selected attributes.
1434 int ib_query_qp(struct ib_qp *qp,
1435 struct ib_qp_attr *qp_attr,
1437 struct ib_qp_init_attr *qp_init_attr);
1440 * ib_destroy_qp - Destroys the specified QP.
1441 * @qp: The QP to destroy.
1443 int ib_destroy_qp(struct ib_qp *qp);
1446 * ib_post_send - Posts a list of work requests to the send queue of
1448 * @qp: The QP to post the work request on.
1449 * @send_wr: A list of work requests to post on the send queue.
1450 * @bad_send_wr: On an immediate failure, this parameter will reference
1451 * the work request that failed to be posted on the QP.
1453 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
1454 * error is returned, the QP state shall not be affected,
1455 * ib_post_send() will return an immediate error after queueing any
1456 * earlier work requests in the list.
1458 static inline int ib_post_send(struct ib_qp *qp,
1459 struct ib_send_wr *send_wr,
1460 struct ib_send_wr **bad_send_wr)
1462 return qp->device->post_send(qp, send_wr, bad_send_wr);
1466 * ib_post_recv - Posts a list of work requests to the receive queue of
1468 * @qp: The QP to post the work request on.
1469 * @recv_wr: A list of work requests to post on the receive queue.
1470 * @bad_recv_wr: On an immediate failure, this parameter will reference
1471 * the work request that failed to be posted on the QP.
1473 static inline int ib_post_recv(struct ib_qp *qp,
1474 struct ib_recv_wr *recv_wr,
1475 struct ib_recv_wr **bad_recv_wr)
1477 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1481 * ib_create_cq - Creates a CQ on the specified device.
1482 * @device: The device on which to create the CQ.
1483 * @comp_handler: A user-specified callback that is invoked when a
1484 * completion event occurs on the CQ.
1485 * @event_handler: A user-specified callback that is invoked when an
1486 * asynchronous event not associated with a completion occurs on the CQ.
1487 * @cq_context: Context associated with the CQ returned to the user via
1488 * the associated completion and event handlers.
1489 * @cqe: The minimum size of the CQ.
1490 * @comp_vector - Completion vector used to signal completion events.
1491 * Must be >= 0 and < context->num_comp_vectors.
1493 * Users can examine the cq structure to determine the actual CQ size.
1495 struct ib_cq *ib_create_cq(struct ib_device *device,
1496 ib_comp_handler comp_handler,
1497 void (*event_handler)(struct ib_event *, void *),
1498 void *cq_context, int cqe, int comp_vector);
1501 * ib_resize_cq - Modifies the capacity of the CQ.
1502 * @cq: The CQ to resize.
1503 * @cqe: The minimum size of the CQ.
1505 * Users can examine the cq structure to determine the actual CQ size.
1507 int ib_resize_cq(struct ib_cq *cq, int cqe);
1510 * ib_modify_cq - Modifies moderation params of the CQ
1511 * @cq: The CQ to modify.
1512 * @cq_count: number of CQEs that will trigger an event
1513 * @cq_period: max period of time in usec before triggering an event
1516 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
1519 * ib_destroy_cq - Destroys the specified CQ.
1520 * @cq: The CQ to destroy.
1522 int ib_destroy_cq(struct ib_cq *cq);
1525 * ib_poll_cq - poll a CQ for completion(s)
1526 * @cq:the CQ being polled
1527 * @num_entries:maximum number of completions to return
1528 * @wc:array of at least @num_entries &struct ib_wc where completions
1531 * Poll a CQ for (possibly multiple) completions. If the return value
1532 * is < 0, an error occurred. If the return value is >= 0, it is the
1533 * number of completions returned. If the return value is
1534 * non-negative and < num_entries, then the CQ was emptied.
1536 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1539 return cq->device->poll_cq(cq, num_entries, wc);
1543 * ib_peek_cq - Returns the number of unreaped completions currently
1544 * on the specified CQ.
1545 * @cq: The CQ to peek.
1546 * @wc_cnt: A minimum number of unreaped completions to check for.
1548 * If the number of unreaped completions is greater than or equal to wc_cnt,
1549 * this function returns wc_cnt, otherwise, it returns the actual number of
1550 * unreaped completions.
1552 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1555 * ib_req_notify_cq - Request completion notification on a CQ.
1556 * @cq: The CQ to generate an event for.
1558 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
1559 * to request an event on the next solicited event or next work
1560 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
1561 * may also be |ed in to request a hint about missed events, as
1565 * < 0 means an error occurred while requesting notification
1566 * == 0 means notification was requested successfully, and if
1567 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
1568 * were missed and it is safe to wait for another event. In
1569 * this case is it guaranteed that any work completions added
1570 * to the CQ since the last CQ poll will trigger a completion
1571 * notification event.
1572 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
1573 * in. It means that the consumer must poll the CQ again to
1574 * make sure it is empty to avoid missing an event because of a
1575 * race between requesting notification and an entry being
1576 * added to the CQ. This return value means it is possible
1577 * (but not guaranteed) that a work completion has been added
1578 * to the CQ since the last poll without triggering a
1579 * completion notification event.
1581 static inline int ib_req_notify_cq(struct ib_cq *cq,
1582 enum ib_cq_notify_flags flags)
1584 return cq->device->req_notify_cq(cq, flags);
1588 * ib_req_ncomp_notif - Request completion notification when there are
1589 * at least the specified number of unreaped completions on the CQ.
1590 * @cq: The CQ to generate an event for.
1591 * @wc_cnt: The number of unreaped completions that should be on the
1592 * CQ before an event is generated.
1594 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1596 return cq->device->req_ncomp_notif ?
1597 cq->device->req_ncomp_notif(cq, wc_cnt) :
1602 * ib_get_dma_mr - Returns a memory region for system memory that is
1604 * @pd: The protection domain associated with the memory region.
1605 * @mr_access_flags: Specifies the memory access rights.
1607 * Note that the ib_dma_*() functions defined below must be used
1608 * to create/destroy addresses used with the Lkey or Rkey returned
1609 * by ib_get_dma_mr().
1611 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1614 * ib_dma_mapping_error - check a DMA addr for error
1615 * @dev: The device for which the dma_addr was created
1616 * @dma_addr: The DMA address to check
1618 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
1621 return dev->dma_ops->mapping_error(dev, dma_addr);
1622 return dma_mapping_error(dev->dma_device, dma_addr);
1626 * ib_dma_map_single - Map a kernel virtual address to DMA address
1627 * @dev: The device for which the dma_addr is to be created
1628 * @cpu_addr: The kernel virtual address
1629 * @size: The size of the region in bytes
1630 * @direction: The direction of the DMA
1632 static inline u64 ib_dma_map_single(struct ib_device *dev,
1633 void *cpu_addr, size_t size,
1634 enum dma_data_direction direction)
1637 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
1638 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
1642 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
1643 * @dev: The device for which the DMA address was created
1644 * @addr: The DMA address
1645 * @size: The size of the region in bytes
1646 * @direction: The direction of the DMA
1648 static inline void ib_dma_unmap_single(struct ib_device *dev,
1649 u64 addr, size_t size,
1650 enum dma_data_direction direction)
1653 dev->dma_ops->unmap_single(dev, addr, size, direction);
1655 dma_unmap_single(dev->dma_device, addr, size, direction);
1658 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
1659 void *cpu_addr, size_t size,
1660 enum dma_data_direction direction,
1661 struct dma_attrs *attrs)
1663 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
1667 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
1668 u64 addr, size_t size,
1669 enum dma_data_direction direction,
1670 struct dma_attrs *attrs)
1672 return dma_unmap_single_attrs(dev->dma_device, addr, size,
1677 * ib_dma_map_page - Map a physical page to DMA address
1678 * @dev: The device for which the dma_addr is to be created
1679 * @page: The page to be mapped
1680 * @offset: The offset within the page
1681 * @size: The size of the region in bytes
1682 * @direction: The direction of the DMA
1684 static inline u64 ib_dma_map_page(struct ib_device *dev,
1686 unsigned long offset,
1688 enum dma_data_direction direction)
1691 return dev->dma_ops->map_page(dev, page, offset, size, direction);
1692 return dma_map_page(dev->dma_device, page, offset, size, direction);
1696 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
1697 * @dev: The device for which the DMA address was created
1698 * @addr: The DMA address
1699 * @size: The size of the region in bytes
1700 * @direction: The direction of the DMA
1702 static inline void ib_dma_unmap_page(struct ib_device *dev,
1703 u64 addr, size_t size,
1704 enum dma_data_direction direction)
1707 dev->dma_ops->unmap_page(dev, addr, size, direction);
1709 dma_unmap_page(dev->dma_device, addr, size, direction);
1713 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
1714 * @dev: The device for which the DMA addresses are to be created
1715 * @sg: The array of scatter/gather entries
1716 * @nents: The number of scatter/gather entries
1717 * @direction: The direction of the DMA
1719 static inline int ib_dma_map_sg(struct ib_device *dev,
1720 struct scatterlist *sg, int nents,
1721 enum dma_data_direction direction)
1724 return dev->dma_ops->map_sg(dev, sg, nents, direction);
1725 return dma_map_sg(dev->dma_device, sg, nents, direction);
1729 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
1730 * @dev: The device for which the DMA addresses were created
1731 * @sg: The array of scatter/gather entries
1732 * @nents: The number of scatter/gather entries
1733 * @direction: The direction of the DMA
1735 static inline void ib_dma_unmap_sg(struct ib_device *dev,
1736 struct scatterlist *sg, int nents,
1737 enum dma_data_direction direction)
1740 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
1742 dma_unmap_sg(dev->dma_device, sg, nents, direction);
1745 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
1746 struct scatterlist *sg, int nents,
1747 enum dma_data_direction direction,
1748 struct dma_attrs *attrs)
1750 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
1753 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
1754 struct scatterlist *sg, int nents,
1755 enum dma_data_direction direction,
1756 struct dma_attrs *attrs)
1758 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
1761 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
1762 * @dev: The device for which the DMA addresses were created
1763 * @sg: The scatter/gather entry
1765 static inline u64 ib_sg_dma_address(struct ib_device *dev,
1766 struct scatterlist *sg)
1769 return dev->dma_ops->dma_address(dev, sg);
1770 return sg_dma_address(sg);
1774 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
1775 * @dev: The device for which the DMA addresses were created
1776 * @sg: The scatter/gather entry
1778 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
1779 struct scatterlist *sg)
1782 return dev->dma_ops->dma_len(dev, sg);
1783 return sg_dma_len(sg);
1787 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
1788 * @dev: The device for which the DMA address was created
1789 * @addr: The DMA address
1790 * @size: The size of the region in bytes
1791 * @dir: The direction of the DMA
1793 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
1796 enum dma_data_direction dir)
1799 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
1801 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
1805 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
1806 * @dev: The device for which the DMA address was created
1807 * @addr: The DMA address
1808 * @size: The size of the region in bytes
1809 * @dir: The direction of the DMA
1811 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
1814 enum dma_data_direction dir)
1817 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
1819 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
1823 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
1824 * @dev: The device for which the DMA address is requested
1825 * @size: The size of the region to allocate in bytes
1826 * @dma_handle: A pointer for returning the DMA address of the region
1827 * @flag: memory allocator flags
1829 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
1835 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
1840 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
1841 *dma_handle = handle;
1847 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
1848 * @dev: The device for which the DMA addresses were allocated
1849 * @size: The size of the region
1850 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
1851 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
1853 static inline void ib_dma_free_coherent(struct ib_device *dev,
1854 size_t size, void *cpu_addr,
1858 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
1860 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
1864 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1866 * @pd: The protection domain associated assigned to the registered region.
1867 * @phys_buf_array: Specifies a list of physical buffers to use in the
1869 * @num_phys_buf: Specifies the size of the phys_buf_array.
1870 * @mr_access_flags: Specifies the memory access rights.
1871 * @iova_start: The offset of the region's starting I/O virtual address.
1873 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1874 struct ib_phys_buf *phys_buf_array,
1876 int mr_access_flags,
1880 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1881 * Conceptually, this call performs the functions deregister memory region
1882 * followed by register physical memory region. Where possible,
1883 * resources are reused instead of deallocated and reallocated.
1884 * @mr: The memory region to modify.
1885 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1886 * properties of the memory region are being modified.
1887 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1888 * the new protection domain to associated with the memory region,
1889 * otherwise, this parameter is ignored.
1890 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1891 * field specifies a list of physical buffers to use in the new
1892 * translation, otherwise, this parameter is ignored.
1893 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1894 * field specifies the size of the phys_buf_array, otherwise, this
1895 * parameter is ignored.
1896 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1897 * field specifies the new memory access rights, otherwise, this
1898 * parameter is ignored.
1899 * @iova_start: The offset of the region's starting I/O virtual address.
1901 int ib_rereg_phys_mr(struct ib_mr *mr,
1904 struct ib_phys_buf *phys_buf_array,
1906 int mr_access_flags,
1910 * ib_query_mr - Retrieves information about a specific memory region.
1911 * @mr: The memory region to retrieve information about.
1912 * @mr_attr: The attributes of the specified memory region.
1914 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1917 * ib_dereg_mr - Deregisters a memory region and removes it from the
1918 * HCA translation table.
1919 * @mr: The memory region to deregister.
1921 int ib_dereg_mr(struct ib_mr *mr);
1924 * ib_alloc_fast_reg_mr - Allocates memory region usable with the
1925 * IB_WR_FAST_REG_MR send work request.
1926 * @pd: The protection domain associated with the region.
1927 * @max_page_list_len: requested max physical buffer list length to be
1928 * used with fast register work requests for this MR.
1930 struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
1933 * ib_alloc_fast_reg_page_list - Allocates a page list array
1934 * @device - ib device pointer.
1935 * @page_list_len - size of the page list array to be allocated.
1937 * This allocates and returns a struct ib_fast_reg_page_list * and a
1938 * page_list array that is at least page_list_len in size. The actual
1939 * size is returned in max_page_list_len. The caller is responsible
1940 * for initializing the contents of the page_list array before posting
1941 * a send work request with the IB_WC_FAST_REG_MR opcode.
1943 * The page_list array entries must be translated using one of the
1944 * ib_dma_*() functions just like the addresses passed to
1945 * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
1946 * ib_fast_reg_page_list must not be modified by the caller until the
1947 * IB_WC_FAST_REG_MR work request completes.
1949 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
1950 struct ib_device *device, int page_list_len);
1953 * ib_free_fast_reg_page_list - Deallocates a previously allocated
1955 * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
1957 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
1960 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
1962 * @mr - struct ib_mr pointer to be updated.
1963 * @newkey - new key to be used.
1965 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
1967 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
1968 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
1972 * ib_alloc_mw - Allocates a memory window.
1973 * @pd: The protection domain associated with the memory window.
1975 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1978 * ib_bind_mw - Posts a work request to the send queue of the specified
1979 * QP, which binds the memory window to the given address range and
1980 * remote access attributes.
1981 * @qp: QP to post the bind work request on.
1982 * @mw: The memory window to bind.
1983 * @mw_bind: Specifies information about the memory window, including
1984 * its address range, remote access rights, and associated memory region.
1986 static inline int ib_bind_mw(struct ib_qp *qp,
1988 struct ib_mw_bind *mw_bind)
1990 /* XXX reference counting in corresponding MR? */
1991 return mw->device->bind_mw ?
1992 mw->device->bind_mw(qp, mw, mw_bind) :
1997 * ib_dealloc_mw - Deallocates a memory window.
1998 * @mw: The memory window to deallocate.
2000 int ib_dealloc_mw(struct ib_mw *mw);
2003 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2004 * @pd: The protection domain associated with the unmapped region.
2005 * @mr_access_flags: Specifies the memory access rights.
2006 * @fmr_attr: Attributes of the unmapped region.
2008 * A fast memory region must be mapped before it can be used as part of
2011 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
2012 int mr_access_flags,
2013 struct ib_fmr_attr *fmr_attr);
2016 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2017 * @fmr: The fast memory region to associate with the pages.
2018 * @page_list: An array of physical pages to map to the fast memory region.
2019 * @list_len: The number of pages in page_list.
2020 * @iova: The I/O virtual address to use with the mapped region.
2022 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
2023 u64 *page_list, int list_len,
2026 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
2030 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
2031 * @fmr_list: A linked list of fast memory regions to unmap.
2033 int ib_unmap_fmr(struct list_head *fmr_list);
2036 * ib_dealloc_fmr - Deallocates a fast memory region.
2037 * @fmr: The fast memory region to deallocate.
2039 int ib_dealloc_fmr(struct ib_fmr *fmr);
2042 * ib_attach_mcast - Attaches the specified QP to a multicast group.
2043 * @qp: QP to attach to the multicast group. The QP must be type
2045 * @gid: Multicast group GID.
2046 * @lid: Multicast group LID in host byte order.
2048 * In order to send and receive multicast packets, subnet
2049 * administration must have created the multicast group and configured
2050 * the fabric appropriately. The port associated with the specified
2051 * QP must also be a member of the multicast group.
2053 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2056 * ib_detach_mcast - Detaches the specified QP from a multicast group.
2057 * @qp: QP to detach from the multicast group.
2058 * @gid: Multicast group GID.
2059 * @lid: Multicast group LID in host byte order.
2061 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2063 #endif /* IB_VERBS_H */