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[PATCH] ieee80211: Fix debug comments ipw->ieee80211
[deliverable/linux.git] / drivers / infiniband / include / ib_verbs.h
1 /*
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 Cisco Systems. All rights reserved.
8 *
9 * This software is available to you under a choice of one of two
10 * licenses. You may choose to be licensed under the terms of the GNU
11 * General Public License (GPL) Version 2, available from the file
12 * COPYING in the main directory of this source tree, or the
13 * OpenIB.org BSD license below:
14 *
15 * Redistribution and use in source and binary forms, with or
16 * without modification, are permitted provided that the following
17 * conditions are met:
18 *
19 * - Redistributions of source code must retain the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer.
22 *
23 * - Redistributions in binary form must reproduce the above
24 * copyright notice, this list of conditions and the following
25 * disclaimer in the documentation and/or other materials
26 * provided with the distribution.
27 *
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
32 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
33 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
34 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 * SOFTWARE.
36 *
37 * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
38 */
39
40 #if !defined(IB_VERBS_H)
41 #define IB_VERBS_H
42
43 #include <linux/types.h>
44 #include <linux/device.h>
45
46 #include <asm/atomic.h>
47 #include <asm/scatterlist.h>
48 #include <asm/uaccess.h>
49
50 union ib_gid {
51 u8 raw[16];
52 struct {
53 u64 subnet_prefix;
54 u64 interface_id;
55 } global;
56 };
57
58 enum ib_node_type {
59 IB_NODE_CA = 1,
60 IB_NODE_SWITCH,
61 IB_NODE_ROUTER
62 };
63
64 enum ib_device_cap_flags {
65 IB_DEVICE_RESIZE_MAX_WR = 1,
66 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
67 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
68 IB_DEVICE_RAW_MULTI = (1<<3),
69 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
70 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
71 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
72 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
73 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
74 IB_DEVICE_INIT_TYPE = (1<<9),
75 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
76 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
77 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
78 IB_DEVICE_SRQ_RESIZE = (1<<13),
79 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
80 };
81
82 enum ib_atomic_cap {
83 IB_ATOMIC_NONE,
84 IB_ATOMIC_HCA,
85 IB_ATOMIC_GLOB
86 };
87
88 struct ib_device_attr {
89 u64 fw_ver;
90 u64 node_guid;
91 u64 sys_image_guid;
92 u64 max_mr_size;
93 u64 page_size_cap;
94 u32 vendor_id;
95 u32 vendor_part_id;
96 u32 hw_ver;
97 int max_qp;
98 int max_qp_wr;
99 int device_cap_flags;
100 int max_sge;
101 int max_sge_rd;
102 int max_cq;
103 int max_cqe;
104 int max_mr;
105 int max_pd;
106 int max_qp_rd_atom;
107 int max_ee_rd_atom;
108 int max_res_rd_atom;
109 int max_qp_init_rd_atom;
110 int max_ee_init_rd_atom;
111 enum ib_atomic_cap atomic_cap;
112 int max_ee;
113 int max_rdd;
114 int max_mw;
115 int max_raw_ipv6_qp;
116 int max_raw_ethy_qp;
117 int max_mcast_grp;
118 int max_mcast_qp_attach;
119 int max_total_mcast_qp_attach;
120 int max_ah;
121 int max_fmr;
122 int max_map_per_fmr;
123 int max_srq;
124 int max_srq_wr;
125 int max_srq_sge;
126 u16 max_pkeys;
127 u8 local_ca_ack_delay;
128 };
129
130 enum ib_mtu {
131 IB_MTU_256 = 1,
132 IB_MTU_512 = 2,
133 IB_MTU_1024 = 3,
134 IB_MTU_2048 = 4,
135 IB_MTU_4096 = 5
136 };
137
138 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
139 {
140 switch (mtu) {
141 case IB_MTU_256: return 256;
142 case IB_MTU_512: return 512;
143 case IB_MTU_1024: return 1024;
144 case IB_MTU_2048: return 2048;
145 case IB_MTU_4096: return 4096;
146 default: return -1;
147 }
148 }
149
150 enum ib_port_state {
151 IB_PORT_NOP = 0,
152 IB_PORT_DOWN = 1,
153 IB_PORT_INIT = 2,
154 IB_PORT_ARMED = 3,
155 IB_PORT_ACTIVE = 4,
156 IB_PORT_ACTIVE_DEFER = 5
157 };
158
159 enum ib_port_cap_flags {
160 IB_PORT_SM = 1 << 1,
161 IB_PORT_NOTICE_SUP = 1 << 2,
162 IB_PORT_TRAP_SUP = 1 << 3,
163 IB_PORT_OPT_IPD_SUP = 1 << 4,
164 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
165 IB_PORT_SL_MAP_SUP = 1 << 6,
166 IB_PORT_MKEY_NVRAM = 1 << 7,
167 IB_PORT_PKEY_NVRAM = 1 << 8,
168 IB_PORT_LED_INFO_SUP = 1 << 9,
169 IB_PORT_SM_DISABLED = 1 << 10,
170 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
171 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
172 IB_PORT_CM_SUP = 1 << 16,
173 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
174 IB_PORT_REINIT_SUP = 1 << 18,
175 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
176 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
177 IB_PORT_DR_NOTICE_SUP = 1 << 21,
178 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
179 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
180 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
181 IB_PORT_CLIENT_REG_SUP = 1 << 25
182 };
183
184 enum ib_port_width {
185 IB_WIDTH_1X = 1,
186 IB_WIDTH_4X = 2,
187 IB_WIDTH_8X = 4,
188 IB_WIDTH_12X = 8
189 };
190
191 static inline int ib_width_enum_to_int(enum ib_port_width width)
192 {
193 switch (width) {
194 case IB_WIDTH_1X: return 1;
195 case IB_WIDTH_4X: return 4;
196 case IB_WIDTH_8X: return 8;
197 case IB_WIDTH_12X: return 12;
198 default: return -1;
199 }
200 }
201
202 struct ib_port_attr {
203 enum ib_port_state state;
204 enum ib_mtu max_mtu;
205 enum ib_mtu active_mtu;
206 int gid_tbl_len;
207 u32 port_cap_flags;
208 u32 max_msg_sz;
209 u32 bad_pkey_cntr;
210 u32 qkey_viol_cntr;
211 u16 pkey_tbl_len;
212 u16 lid;
213 u16 sm_lid;
214 u8 lmc;
215 u8 max_vl_num;
216 u8 sm_sl;
217 u8 subnet_timeout;
218 u8 init_type_reply;
219 u8 active_width;
220 u8 active_speed;
221 u8 phys_state;
222 };
223
224 enum ib_device_modify_flags {
225 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1
226 };
227
228 struct ib_device_modify {
229 u64 sys_image_guid;
230 };
231
232 enum ib_port_modify_flags {
233 IB_PORT_SHUTDOWN = 1,
234 IB_PORT_INIT_TYPE = (1<<2),
235 IB_PORT_RESET_QKEY_CNTR = (1<<3)
236 };
237
238 struct ib_port_modify {
239 u32 set_port_cap_mask;
240 u32 clr_port_cap_mask;
241 u8 init_type;
242 };
243
244 enum ib_event_type {
245 IB_EVENT_CQ_ERR,
246 IB_EVENT_QP_FATAL,
247 IB_EVENT_QP_REQ_ERR,
248 IB_EVENT_QP_ACCESS_ERR,
249 IB_EVENT_COMM_EST,
250 IB_EVENT_SQ_DRAINED,
251 IB_EVENT_PATH_MIG,
252 IB_EVENT_PATH_MIG_ERR,
253 IB_EVENT_DEVICE_FATAL,
254 IB_EVENT_PORT_ACTIVE,
255 IB_EVENT_PORT_ERR,
256 IB_EVENT_LID_CHANGE,
257 IB_EVENT_PKEY_CHANGE,
258 IB_EVENT_SM_CHANGE
259 };
260
261 struct ib_event {
262 struct ib_device *device;
263 union {
264 struct ib_cq *cq;
265 struct ib_qp *qp;
266 u8 port_num;
267 } element;
268 enum ib_event_type event;
269 };
270
271 struct ib_event_handler {
272 struct ib_device *device;
273 void (*handler)(struct ib_event_handler *, struct ib_event *);
274 struct list_head list;
275 };
276
277 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
278 do { \
279 (_ptr)->device = _device; \
280 (_ptr)->handler = _handler; \
281 INIT_LIST_HEAD(&(_ptr)->list); \
282 } while (0)
283
284 struct ib_global_route {
285 union ib_gid dgid;
286 u32 flow_label;
287 u8 sgid_index;
288 u8 hop_limit;
289 u8 traffic_class;
290 };
291
292 struct ib_grh {
293 u32 version_tclass_flow;
294 u16 paylen;
295 u8 next_hdr;
296 u8 hop_limit;
297 union ib_gid sgid;
298 union ib_gid dgid;
299 };
300
301 enum {
302 IB_MULTICAST_QPN = 0xffffff
303 };
304
305 enum ib_ah_flags {
306 IB_AH_GRH = 1
307 };
308
309 struct ib_ah_attr {
310 struct ib_global_route grh;
311 u16 dlid;
312 u8 sl;
313 u8 src_path_bits;
314 u8 static_rate;
315 u8 ah_flags;
316 u8 port_num;
317 };
318
319 enum ib_wc_status {
320 IB_WC_SUCCESS,
321 IB_WC_LOC_LEN_ERR,
322 IB_WC_LOC_QP_OP_ERR,
323 IB_WC_LOC_EEC_OP_ERR,
324 IB_WC_LOC_PROT_ERR,
325 IB_WC_WR_FLUSH_ERR,
326 IB_WC_MW_BIND_ERR,
327 IB_WC_BAD_RESP_ERR,
328 IB_WC_LOC_ACCESS_ERR,
329 IB_WC_REM_INV_REQ_ERR,
330 IB_WC_REM_ACCESS_ERR,
331 IB_WC_REM_OP_ERR,
332 IB_WC_RETRY_EXC_ERR,
333 IB_WC_RNR_RETRY_EXC_ERR,
334 IB_WC_LOC_RDD_VIOL_ERR,
335 IB_WC_REM_INV_RD_REQ_ERR,
336 IB_WC_REM_ABORT_ERR,
337 IB_WC_INV_EECN_ERR,
338 IB_WC_INV_EEC_STATE_ERR,
339 IB_WC_FATAL_ERR,
340 IB_WC_RESP_TIMEOUT_ERR,
341 IB_WC_GENERAL_ERR
342 };
343
344 enum ib_wc_opcode {
345 IB_WC_SEND,
346 IB_WC_RDMA_WRITE,
347 IB_WC_RDMA_READ,
348 IB_WC_COMP_SWAP,
349 IB_WC_FETCH_ADD,
350 IB_WC_BIND_MW,
351 /*
352 * Set value of IB_WC_RECV so consumers can test if a completion is a
353 * receive by testing (opcode & IB_WC_RECV).
354 */
355 IB_WC_RECV = 1 << 7,
356 IB_WC_RECV_RDMA_WITH_IMM
357 };
358
359 enum ib_wc_flags {
360 IB_WC_GRH = 1,
361 IB_WC_WITH_IMM = (1<<1)
362 };
363
364 struct ib_wc {
365 u64 wr_id;
366 enum ib_wc_status status;
367 enum ib_wc_opcode opcode;
368 u32 vendor_err;
369 u32 byte_len;
370 __be32 imm_data;
371 u32 qp_num;
372 u32 src_qp;
373 int wc_flags;
374 u16 pkey_index;
375 u16 slid;
376 u8 sl;
377 u8 dlid_path_bits;
378 u8 port_num; /* valid only for DR SMPs on switches */
379 };
380
381 enum ib_cq_notify {
382 IB_CQ_SOLICITED,
383 IB_CQ_NEXT_COMP
384 };
385
386 struct ib_qp_cap {
387 u32 max_send_wr;
388 u32 max_recv_wr;
389 u32 max_send_sge;
390 u32 max_recv_sge;
391 u32 max_inline_data;
392 };
393
394 enum ib_sig_type {
395 IB_SIGNAL_ALL_WR,
396 IB_SIGNAL_REQ_WR
397 };
398
399 enum ib_qp_type {
400 /*
401 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
402 * here (and in that order) since the MAD layer uses them as
403 * indices into a 2-entry table.
404 */
405 IB_QPT_SMI,
406 IB_QPT_GSI,
407
408 IB_QPT_RC,
409 IB_QPT_UC,
410 IB_QPT_UD,
411 IB_QPT_RAW_IPV6,
412 IB_QPT_RAW_ETY
413 };
414
415 struct ib_qp_init_attr {
416 void (*event_handler)(struct ib_event *, void *);
417 void *qp_context;
418 struct ib_cq *send_cq;
419 struct ib_cq *recv_cq;
420 struct ib_srq *srq;
421 struct ib_qp_cap cap;
422 enum ib_sig_type sq_sig_type;
423 enum ib_qp_type qp_type;
424 u8 port_num; /* special QP types only */
425 };
426
427 enum ib_rnr_timeout {
428 IB_RNR_TIMER_655_36 = 0,
429 IB_RNR_TIMER_000_01 = 1,
430 IB_RNR_TIMER_000_02 = 2,
431 IB_RNR_TIMER_000_03 = 3,
432 IB_RNR_TIMER_000_04 = 4,
433 IB_RNR_TIMER_000_06 = 5,
434 IB_RNR_TIMER_000_08 = 6,
435 IB_RNR_TIMER_000_12 = 7,
436 IB_RNR_TIMER_000_16 = 8,
437 IB_RNR_TIMER_000_24 = 9,
438 IB_RNR_TIMER_000_32 = 10,
439 IB_RNR_TIMER_000_48 = 11,
440 IB_RNR_TIMER_000_64 = 12,
441 IB_RNR_TIMER_000_96 = 13,
442 IB_RNR_TIMER_001_28 = 14,
443 IB_RNR_TIMER_001_92 = 15,
444 IB_RNR_TIMER_002_56 = 16,
445 IB_RNR_TIMER_003_84 = 17,
446 IB_RNR_TIMER_005_12 = 18,
447 IB_RNR_TIMER_007_68 = 19,
448 IB_RNR_TIMER_010_24 = 20,
449 IB_RNR_TIMER_015_36 = 21,
450 IB_RNR_TIMER_020_48 = 22,
451 IB_RNR_TIMER_030_72 = 23,
452 IB_RNR_TIMER_040_96 = 24,
453 IB_RNR_TIMER_061_44 = 25,
454 IB_RNR_TIMER_081_92 = 26,
455 IB_RNR_TIMER_122_88 = 27,
456 IB_RNR_TIMER_163_84 = 28,
457 IB_RNR_TIMER_245_76 = 29,
458 IB_RNR_TIMER_327_68 = 30,
459 IB_RNR_TIMER_491_52 = 31
460 };
461
462 enum ib_qp_attr_mask {
463 IB_QP_STATE = 1,
464 IB_QP_CUR_STATE = (1<<1),
465 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
466 IB_QP_ACCESS_FLAGS = (1<<3),
467 IB_QP_PKEY_INDEX = (1<<4),
468 IB_QP_PORT = (1<<5),
469 IB_QP_QKEY = (1<<6),
470 IB_QP_AV = (1<<7),
471 IB_QP_PATH_MTU = (1<<8),
472 IB_QP_TIMEOUT = (1<<9),
473 IB_QP_RETRY_CNT = (1<<10),
474 IB_QP_RNR_RETRY = (1<<11),
475 IB_QP_RQ_PSN = (1<<12),
476 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
477 IB_QP_ALT_PATH = (1<<14),
478 IB_QP_MIN_RNR_TIMER = (1<<15),
479 IB_QP_SQ_PSN = (1<<16),
480 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
481 IB_QP_PATH_MIG_STATE = (1<<18),
482 IB_QP_CAP = (1<<19),
483 IB_QP_DEST_QPN = (1<<20)
484 };
485
486 enum ib_qp_state {
487 IB_QPS_RESET,
488 IB_QPS_INIT,
489 IB_QPS_RTR,
490 IB_QPS_RTS,
491 IB_QPS_SQD,
492 IB_QPS_SQE,
493 IB_QPS_ERR
494 };
495
496 enum ib_mig_state {
497 IB_MIG_MIGRATED,
498 IB_MIG_REARM,
499 IB_MIG_ARMED
500 };
501
502 struct ib_qp_attr {
503 enum ib_qp_state qp_state;
504 enum ib_qp_state cur_qp_state;
505 enum ib_mtu path_mtu;
506 enum ib_mig_state path_mig_state;
507 u32 qkey;
508 u32 rq_psn;
509 u32 sq_psn;
510 u32 dest_qp_num;
511 int qp_access_flags;
512 struct ib_qp_cap cap;
513 struct ib_ah_attr ah_attr;
514 struct ib_ah_attr alt_ah_attr;
515 u16 pkey_index;
516 u16 alt_pkey_index;
517 u8 en_sqd_async_notify;
518 u8 sq_draining;
519 u8 max_rd_atomic;
520 u8 max_dest_rd_atomic;
521 u8 min_rnr_timer;
522 u8 port_num;
523 u8 timeout;
524 u8 retry_cnt;
525 u8 rnr_retry;
526 u8 alt_port_num;
527 u8 alt_timeout;
528 };
529
530 enum ib_wr_opcode {
531 IB_WR_RDMA_WRITE,
532 IB_WR_RDMA_WRITE_WITH_IMM,
533 IB_WR_SEND,
534 IB_WR_SEND_WITH_IMM,
535 IB_WR_RDMA_READ,
536 IB_WR_ATOMIC_CMP_AND_SWP,
537 IB_WR_ATOMIC_FETCH_AND_ADD
538 };
539
540 enum ib_send_flags {
541 IB_SEND_FENCE = 1,
542 IB_SEND_SIGNALED = (1<<1),
543 IB_SEND_SOLICITED = (1<<2),
544 IB_SEND_INLINE = (1<<3)
545 };
546
547 struct ib_sge {
548 u64 addr;
549 u32 length;
550 u32 lkey;
551 };
552
553 struct ib_send_wr {
554 struct ib_send_wr *next;
555 u64 wr_id;
556 struct ib_sge *sg_list;
557 int num_sge;
558 enum ib_wr_opcode opcode;
559 int send_flags;
560 __be32 imm_data;
561 union {
562 struct {
563 u64 remote_addr;
564 u32 rkey;
565 } rdma;
566 struct {
567 u64 remote_addr;
568 u64 compare_add;
569 u64 swap;
570 u32 rkey;
571 } atomic;
572 struct {
573 struct ib_ah *ah;
574 struct ib_mad_hdr *mad_hdr;
575 u32 remote_qpn;
576 u32 remote_qkey;
577 int timeout_ms; /* valid for MADs only */
578 int retries; /* valid for MADs only */
579 u16 pkey_index; /* valid for GSI only */
580 u8 port_num; /* valid for DR SMPs on switch only */
581 } ud;
582 } wr;
583 };
584
585 struct ib_recv_wr {
586 struct ib_recv_wr *next;
587 u64 wr_id;
588 struct ib_sge *sg_list;
589 int num_sge;
590 };
591
592 enum ib_access_flags {
593 IB_ACCESS_LOCAL_WRITE = 1,
594 IB_ACCESS_REMOTE_WRITE = (1<<1),
595 IB_ACCESS_REMOTE_READ = (1<<2),
596 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
597 IB_ACCESS_MW_BIND = (1<<4)
598 };
599
600 struct ib_phys_buf {
601 u64 addr;
602 u64 size;
603 };
604
605 struct ib_mr_attr {
606 struct ib_pd *pd;
607 u64 device_virt_addr;
608 u64 size;
609 int mr_access_flags;
610 u32 lkey;
611 u32 rkey;
612 };
613
614 enum ib_mr_rereg_flags {
615 IB_MR_REREG_TRANS = 1,
616 IB_MR_REREG_PD = (1<<1),
617 IB_MR_REREG_ACCESS = (1<<2)
618 };
619
620 struct ib_mw_bind {
621 struct ib_mr *mr;
622 u64 wr_id;
623 u64 addr;
624 u32 length;
625 int send_flags;
626 int mw_access_flags;
627 };
628
629 struct ib_fmr_attr {
630 int max_pages;
631 int max_maps;
632 u8 page_size;
633 };
634
635 struct ib_ucontext {
636 struct ib_device *device;
637 struct list_head pd_list;
638 struct list_head mr_list;
639 struct list_head mw_list;
640 struct list_head cq_list;
641 struct list_head qp_list;
642 struct list_head srq_list;
643 struct list_head ah_list;
644 spinlock_t lock;
645 };
646
647 struct ib_uobject {
648 u64 user_handle; /* handle given to us by userspace */
649 struct ib_ucontext *context; /* associated user context */
650 struct list_head list; /* link to context's list */
651 u32 id; /* index into kernel idr */
652 };
653
654 struct ib_umem {
655 unsigned long user_base;
656 unsigned long virt_base;
657 size_t length;
658 int offset;
659 int page_size;
660 int writable;
661 struct list_head chunk_list;
662 };
663
664 struct ib_umem_chunk {
665 struct list_head list;
666 int nents;
667 int nmap;
668 struct scatterlist page_list[0];
669 };
670
671 struct ib_udata {
672 void __user *inbuf;
673 void __user *outbuf;
674 size_t inlen;
675 size_t outlen;
676 };
677
678 #define IB_UMEM_MAX_PAGE_CHUNK \
679 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
680 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
681 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
682
683 struct ib_umem_object {
684 struct ib_uobject uobject;
685 struct ib_umem umem;
686 };
687
688 struct ib_pd {
689 struct ib_device *device;
690 struct ib_uobject *uobject;
691 atomic_t usecnt; /* count all resources */
692 };
693
694 struct ib_ah {
695 struct ib_device *device;
696 struct ib_pd *pd;
697 struct ib_uobject *uobject;
698 };
699
700 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
701
702 struct ib_cq {
703 struct ib_device *device;
704 struct ib_uobject *uobject;
705 ib_comp_handler comp_handler;
706 void (*event_handler)(struct ib_event *, void *);
707 void * cq_context;
708 int cqe;
709 atomic_t usecnt; /* count number of work queues */
710 };
711
712 struct ib_srq {
713 struct ib_device *device;
714 struct ib_uobject *uobject;
715 struct ib_pd *pd;
716 void *srq_context;
717 atomic_t usecnt;
718 };
719
720 struct ib_qp {
721 struct ib_device *device;
722 struct ib_pd *pd;
723 struct ib_cq *send_cq;
724 struct ib_cq *recv_cq;
725 struct ib_srq *srq;
726 struct ib_uobject *uobject;
727 void (*event_handler)(struct ib_event *, void *);
728 void *qp_context;
729 u32 qp_num;
730 enum ib_qp_type qp_type;
731 };
732
733 struct ib_mr {
734 struct ib_device *device;
735 struct ib_pd *pd;
736 struct ib_uobject *uobject;
737 u32 lkey;
738 u32 rkey;
739 atomic_t usecnt; /* count number of MWs */
740 };
741
742 struct ib_mw {
743 struct ib_device *device;
744 struct ib_pd *pd;
745 struct ib_uobject *uobject;
746 u32 rkey;
747 };
748
749 struct ib_fmr {
750 struct ib_device *device;
751 struct ib_pd *pd;
752 struct list_head list;
753 u32 lkey;
754 u32 rkey;
755 };
756
757 struct ib_mad;
758 struct ib_grh;
759
760 enum ib_process_mad_flags {
761 IB_MAD_IGNORE_MKEY = 1,
762 IB_MAD_IGNORE_BKEY = 2,
763 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
764 };
765
766 enum ib_mad_result {
767 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
768 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
769 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
770 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
771 };
772
773 #define IB_DEVICE_NAME_MAX 64
774
775 struct ib_cache {
776 rwlock_t lock;
777 struct ib_event_handler event_handler;
778 struct ib_pkey_cache **pkey_cache;
779 struct ib_gid_cache **gid_cache;
780 };
781
782 struct ib_device {
783 struct device *dma_device;
784
785 char name[IB_DEVICE_NAME_MAX];
786
787 struct list_head event_handler_list;
788 spinlock_t event_handler_lock;
789
790 struct list_head core_list;
791 struct list_head client_data_list;
792 spinlock_t client_data_lock;
793
794 struct ib_cache cache;
795
796 u32 flags;
797
798 int (*query_device)(struct ib_device *device,
799 struct ib_device_attr *device_attr);
800 int (*query_port)(struct ib_device *device,
801 u8 port_num,
802 struct ib_port_attr *port_attr);
803 int (*query_gid)(struct ib_device *device,
804 u8 port_num, int index,
805 union ib_gid *gid);
806 int (*query_pkey)(struct ib_device *device,
807 u8 port_num, u16 index, u16 *pkey);
808 int (*modify_device)(struct ib_device *device,
809 int device_modify_mask,
810 struct ib_device_modify *device_modify);
811 int (*modify_port)(struct ib_device *device,
812 u8 port_num, int port_modify_mask,
813 struct ib_port_modify *port_modify);
814 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
815 struct ib_udata *udata);
816 int (*dealloc_ucontext)(struct ib_ucontext *context);
817 int (*mmap)(struct ib_ucontext *context,
818 struct vm_area_struct *vma);
819 struct ib_pd * (*alloc_pd)(struct ib_device *device,
820 struct ib_ucontext *context,
821 struct ib_udata *udata);
822 int (*dealloc_pd)(struct ib_pd *pd);
823 struct ib_ah * (*create_ah)(struct ib_pd *pd,
824 struct ib_ah_attr *ah_attr);
825 int (*modify_ah)(struct ib_ah *ah,
826 struct ib_ah_attr *ah_attr);
827 int (*query_ah)(struct ib_ah *ah,
828 struct ib_ah_attr *ah_attr);
829 int (*destroy_ah)(struct ib_ah *ah);
830 struct ib_qp * (*create_qp)(struct ib_pd *pd,
831 struct ib_qp_init_attr *qp_init_attr,
832 struct ib_udata *udata);
833 int (*modify_qp)(struct ib_qp *qp,
834 struct ib_qp_attr *qp_attr,
835 int qp_attr_mask);
836 int (*query_qp)(struct ib_qp *qp,
837 struct ib_qp_attr *qp_attr,
838 int qp_attr_mask,
839 struct ib_qp_init_attr *qp_init_attr);
840 int (*destroy_qp)(struct ib_qp *qp);
841 int (*post_send)(struct ib_qp *qp,
842 struct ib_send_wr *send_wr,
843 struct ib_send_wr **bad_send_wr);
844 int (*post_recv)(struct ib_qp *qp,
845 struct ib_recv_wr *recv_wr,
846 struct ib_recv_wr **bad_recv_wr);
847 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
848 struct ib_ucontext *context,
849 struct ib_udata *udata);
850 int (*destroy_cq)(struct ib_cq *cq);
851 int (*resize_cq)(struct ib_cq *cq, int *cqe);
852 int (*poll_cq)(struct ib_cq *cq, int num_entries,
853 struct ib_wc *wc);
854 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
855 int (*req_notify_cq)(struct ib_cq *cq,
856 enum ib_cq_notify cq_notify);
857 int (*req_ncomp_notif)(struct ib_cq *cq,
858 int wc_cnt);
859 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
860 int mr_access_flags);
861 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
862 struct ib_phys_buf *phys_buf_array,
863 int num_phys_buf,
864 int mr_access_flags,
865 u64 *iova_start);
866 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
867 struct ib_umem *region,
868 int mr_access_flags,
869 struct ib_udata *udata);
870 int (*query_mr)(struct ib_mr *mr,
871 struct ib_mr_attr *mr_attr);
872 int (*dereg_mr)(struct ib_mr *mr);
873 int (*rereg_phys_mr)(struct ib_mr *mr,
874 int mr_rereg_mask,
875 struct ib_pd *pd,
876 struct ib_phys_buf *phys_buf_array,
877 int num_phys_buf,
878 int mr_access_flags,
879 u64 *iova_start);
880 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
881 int (*bind_mw)(struct ib_qp *qp,
882 struct ib_mw *mw,
883 struct ib_mw_bind *mw_bind);
884 int (*dealloc_mw)(struct ib_mw *mw);
885 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
886 int mr_access_flags,
887 struct ib_fmr_attr *fmr_attr);
888 int (*map_phys_fmr)(struct ib_fmr *fmr,
889 u64 *page_list, int list_len,
890 u64 iova);
891 int (*unmap_fmr)(struct list_head *fmr_list);
892 int (*dealloc_fmr)(struct ib_fmr *fmr);
893 int (*attach_mcast)(struct ib_qp *qp,
894 union ib_gid *gid,
895 u16 lid);
896 int (*detach_mcast)(struct ib_qp *qp,
897 union ib_gid *gid,
898 u16 lid);
899 int (*process_mad)(struct ib_device *device,
900 int process_mad_flags,
901 u8 port_num,
902 struct ib_wc *in_wc,
903 struct ib_grh *in_grh,
904 struct ib_mad *in_mad,
905 struct ib_mad *out_mad);
906
907 struct module *owner;
908 struct class_device class_dev;
909 struct kobject ports_parent;
910 struct list_head port_list;
911
912 enum {
913 IB_DEV_UNINITIALIZED,
914 IB_DEV_REGISTERED,
915 IB_DEV_UNREGISTERED
916 } reg_state;
917
918 u8 node_type;
919 u8 phys_port_cnt;
920 };
921
922 struct ib_client {
923 char *name;
924 void (*add) (struct ib_device *);
925 void (*remove)(struct ib_device *);
926
927 struct list_head list;
928 };
929
930 struct ib_device *ib_alloc_device(size_t size);
931 void ib_dealloc_device(struct ib_device *device);
932
933 int ib_register_device (struct ib_device *device);
934 void ib_unregister_device(struct ib_device *device);
935
936 int ib_register_client (struct ib_client *client);
937 void ib_unregister_client(struct ib_client *client);
938
939 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
940 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
941 void *data);
942
943 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
944 {
945 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
946 }
947
948 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
949 {
950 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
951 }
952
953 int ib_register_event_handler (struct ib_event_handler *event_handler);
954 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
955 void ib_dispatch_event(struct ib_event *event);
956
957 int ib_query_device(struct ib_device *device,
958 struct ib_device_attr *device_attr);
959
960 int ib_query_port(struct ib_device *device,
961 u8 port_num, struct ib_port_attr *port_attr);
962
963 int ib_query_gid(struct ib_device *device,
964 u8 port_num, int index, union ib_gid *gid);
965
966 int ib_query_pkey(struct ib_device *device,
967 u8 port_num, u16 index, u16 *pkey);
968
969 int ib_modify_device(struct ib_device *device,
970 int device_modify_mask,
971 struct ib_device_modify *device_modify);
972
973 int ib_modify_port(struct ib_device *device,
974 u8 port_num, int port_modify_mask,
975 struct ib_port_modify *port_modify);
976
977 /**
978 * ib_alloc_pd - Allocates an unused protection domain.
979 * @device: The device on which to allocate the protection domain.
980 *
981 * A protection domain object provides an association between QPs, shared
982 * receive queues, address handles, memory regions, and memory windows.
983 */
984 struct ib_pd *ib_alloc_pd(struct ib_device *device);
985
986 /**
987 * ib_dealloc_pd - Deallocates a protection domain.
988 * @pd: The protection domain to deallocate.
989 */
990 int ib_dealloc_pd(struct ib_pd *pd);
991
992 /**
993 * ib_create_ah - Creates an address handle for the given address vector.
994 * @pd: The protection domain associated with the address handle.
995 * @ah_attr: The attributes of the address vector.
996 *
997 * The address handle is used to reference a local or global destination
998 * in all UD QP post sends.
999 */
1000 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1001
1002 /**
1003 * ib_create_ah_from_wc - Creates an address handle associated with the
1004 * sender of the specified work completion.
1005 * @pd: The protection domain associated with the address handle.
1006 * @wc: Work completion information associated with a received message.
1007 * @grh: References the received global route header. This parameter is
1008 * ignored unless the work completion indicates that the GRH is valid.
1009 * @port_num: The outbound port number to associate with the address.
1010 *
1011 * The address handle is used to reference a local or global destination
1012 * in all UD QP post sends.
1013 */
1014 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1015 struct ib_grh *grh, u8 port_num);
1016
1017 /**
1018 * ib_modify_ah - Modifies the address vector associated with an address
1019 * handle.
1020 * @ah: The address handle to modify.
1021 * @ah_attr: The new address vector attributes to associate with the
1022 * address handle.
1023 */
1024 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1025
1026 /**
1027 * ib_query_ah - Queries the address vector associated with an address
1028 * handle.
1029 * @ah: The address handle to query.
1030 * @ah_attr: The address vector attributes associated with the address
1031 * handle.
1032 */
1033 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1034
1035 /**
1036 * ib_destroy_ah - Destroys an address handle.
1037 * @ah: The address handle to destroy.
1038 */
1039 int ib_destroy_ah(struct ib_ah *ah);
1040
1041 /**
1042 * ib_create_qp - Creates a QP associated with the specified protection
1043 * domain.
1044 * @pd: The protection domain associated with the QP.
1045 * @qp_init_attr: A list of initial attributes required to create the QP.
1046 */
1047 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1048 struct ib_qp_init_attr *qp_init_attr);
1049
1050 /**
1051 * ib_modify_qp - Modifies the attributes for the specified QP and then
1052 * transitions the QP to the given state.
1053 * @qp: The QP to modify.
1054 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1055 * the current values of selected QP attributes are returned.
1056 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1057 * are being modified.
1058 */
1059 int ib_modify_qp(struct ib_qp *qp,
1060 struct ib_qp_attr *qp_attr,
1061 int qp_attr_mask);
1062
1063 /**
1064 * ib_query_qp - Returns the attribute list and current values for the
1065 * specified QP.
1066 * @qp: The QP to query.
1067 * @qp_attr: The attributes of the specified QP.
1068 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1069 * @qp_init_attr: Additional attributes of the selected QP.
1070 *
1071 * The qp_attr_mask may be used to limit the query to gathering only the
1072 * selected attributes.
1073 */
1074 int ib_query_qp(struct ib_qp *qp,
1075 struct ib_qp_attr *qp_attr,
1076 int qp_attr_mask,
1077 struct ib_qp_init_attr *qp_init_attr);
1078
1079 /**
1080 * ib_destroy_qp - Destroys the specified QP.
1081 * @qp: The QP to destroy.
1082 */
1083 int ib_destroy_qp(struct ib_qp *qp);
1084
1085 /**
1086 * ib_post_send - Posts a list of work requests to the send queue of
1087 * the specified QP.
1088 * @qp: The QP to post the work request on.
1089 * @send_wr: A list of work requests to post on the send queue.
1090 * @bad_send_wr: On an immediate failure, this parameter will reference
1091 * the work request that failed to be posted on the QP.
1092 */
1093 static inline int ib_post_send(struct ib_qp *qp,
1094 struct ib_send_wr *send_wr,
1095 struct ib_send_wr **bad_send_wr)
1096 {
1097 return qp->device->post_send(qp, send_wr, bad_send_wr);
1098 }
1099
1100 /**
1101 * ib_post_recv - Posts a list of work requests to the receive queue of
1102 * the specified QP.
1103 * @qp: The QP to post the work request on.
1104 * @recv_wr: A list of work requests to post on the receive queue.
1105 * @bad_recv_wr: On an immediate failure, this parameter will reference
1106 * the work request that failed to be posted on the QP.
1107 */
1108 static inline int ib_post_recv(struct ib_qp *qp,
1109 struct ib_recv_wr *recv_wr,
1110 struct ib_recv_wr **bad_recv_wr)
1111 {
1112 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1113 }
1114
1115 /**
1116 * ib_create_cq - Creates a CQ on the specified device.
1117 * @device: The device on which to create the CQ.
1118 * @comp_handler: A user-specified callback that is invoked when a
1119 * completion event occurs on the CQ.
1120 * @event_handler: A user-specified callback that is invoked when an
1121 * asynchronous event not associated with a completion occurs on the CQ.
1122 * @cq_context: Context associated with the CQ returned to the user via
1123 * the associated completion and event handlers.
1124 * @cqe: The minimum size of the CQ.
1125 *
1126 * Users can examine the cq structure to determine the actual CQ size.
1127 */
1128 struct ib_cq *ib_create_cq(struct ib_device *device,
1129 ib_comp_handler comp_handler,
1130 void (*event_handler)(struct ib_event *, void *),
1131 void *cq_context, int cqe);
1132
1133 /**
1134 * ib_resize_cq - Modifies the capacity of the CQ.
1135 * @cq: The CQ to resize.
1136 * @cqe: The minimum size of the CQ.
1137 *
1138 * Users can examine the cq structure to determine the actual CQ size.
1139 */
1140 int ib_resize_cq(struct ib_cq *cq, int cqe);
1141
1142 /**
1143 * ib_destroy_cq - Destroys the specified CQ.
1144 * @cq: The CQ to destroy.
1145 */
1146 int ib_destroy_cq(struct ib_cq *cq);
1147
1148 /**
1149 * ib_poll_cq - poll a CQ for completion(s)
1150 * @cq:the CQ being polled
1151 * @num_entries:maximum number of completions to return
1152 * @wc:array of at least @num_entries &struct ib_wc where completions
1153 * will be returned
1154 *
1155 * Poll a CQ for (possibly multiple) completions. If the return value
1156 * is < 0, an error occurred. If the return value is >= 0, it is the
1157 * number of completions returned. If the return value is
1158 * non-negative and < num_entries, then the CQ was emptied.
1159 */
1160 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1161 struct ib_wc *wc)
1162 {
1163 return cq->device->poll_cq(cq, num_entries, wc);
1164 }
1165
1166 /**
1167 * ib_peek_cq - Returns the number of unreaped completions currently
1168 * on the specified CQ.
1169 * @cq: The CQ to peek.
1170 * @wc_cnt: A minimum number of unreaped completions to check for.
1171 *
1172 * If the number of unreaped completions is greater than or equal to wc_cnt,
1173 * this function returns wc_cnt, otherwise, it returns the actual number of
1174 * unreaped completions.
1175 */
1176 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1177
1178 /**
1179 * ib_req_notify_cq - Request completion notification on a CQ.
1180 * @cq: The CQ to generate an event for.
1181 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1182 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1183 * notification will occur on the next completion.
1184 */
1185 static inline int ib_req_notify_cq(struct ib_cq *cq,
1186 enum ib_cq_notify cq_notify)
1187 {
1188 return cq->device->req_notify_cq(cq, cq_notify);
1189 }
1190
1191 /**
1192 * ib_req_ncomp_notif - Request completion notification when there are
1193 * at least the specified number of unreaped completions on the CQ.
1194 * @cq: The CQ to generate an event for.
1195 * @wc_cnt: The number of unreaped completions that should be on the
1196 * CQ before an event is generated.
1197 */
1198 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1199 {
1200 return cq->device->req_ncomp_notif ?
1201 cq->device->req_ncomp_notif(cq, wc_cnt) :
1202 -ENOSYS;
1203 }
1204
1205 /**
1206 * ib_get_dma_mr - Returns a memory region for system memory that is
1207 * usable for DMA.
1208 * @pd: The protection domain associated with the memory region.
1209 * @mr_access_flags: Specifies the memory access rights.
1210 */
1211 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1212
1213 /**
1214 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1215 * by an HCA.
1216 * @pd: The protection domain associated assigned to the registered region.
1217 * @phys_buf_array: Specifies a list of physical buffers to use in the
1218 * memory region.
1219 * @num_phys_buf: Specifies the size of the phys_buf_array.
1220 * @mr_access_flags: Specifies the memory access rights.
1221 * @iova_start: The offset of the region's starting I/O virtual address.
1222 */
1223 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1224 struct ib_phys_buf *phys_buf_array,
1225 int num_phys_buf,
1226 int mr_access_flags,
1227 u64 *iova_start);
1228
1229 /**
1230 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1231 * Conceptually, this call performs the functions deregister memory region
1232 * followed by register physical memory region. Where possible,
1233 * resources are reused instead of deallocated and reallocated.
1234 * @mr: The memory region to modify.
1235 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1236 * properties of the memory region are being modified.
1237 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1238 * the new protection domain to associated with the memory region,
1239 * otherwise, this parameter is ignored.
1240 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1241 * field specifies a list of physical buffers to use in the new
1242 * translation, otherwise, this parameter is ignored.
1243 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1244 * field specifies the size of the phys_buf_array, otherwise, this
1245 * parameter is ignored.
1246 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1247 * field specifies the new memory access rights, otherwise, this
1248 * parameter is ignored.
1249 * @iova_start: The offset of the region's starting I/O virtual address.
1250 */
1251 int ib_rereg_phys_mr(struct ib_mr *mr,
1252 int mr_rereg_mask,
1253 struct ib_pd *pd,
1254 struct ib_phys_buf *phys_buf_array,
1255 int num_phys_buf,
1256 int mr_access_flags,
1257 u64 *iova_start);
1258
1259 /**
1260 * ib_query_mr - Retrieves information about a specific memory region.
1261 * @mr: The memory region to retrieve information about.
1262 * @mr_attr: The attributes of the specified memory region.
1263 */
1264 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1265
1266 /**
1267 * ib_dereg_mr - Deregisters a memory region and removes it from the
1268 * HCA translation table.
1269 * @mr: The memory region to deregister.
1270 */
1271 int ib_dereg_mr(struct ib_mr *mr);
1272
1273 /**
1274 * ib_alloc_mw - Allocates a memory window.
1275 * @pd: The protection domain associated with the memory window.
1276 */
1277 struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1278
1279 /**
1280 * ib_bind_mw - Posts a work request to the send queue of the specified
1281 * QP, which binds the memory window to the given address range and
1282 * remote access attributes.
1283 * @qp: QP to post the bind work request on.
1284 * @mw: The memory window to bind.
1285 * @mw_bind: Specifies information about the memory window, including
1286 * its address range, remote access rights, and associated memory region.
1287 */
1288 static inline int ib_bind_mw(struct ib_qp *qp,
1289 struct ib_mw *mw,
1290 struct ib_mw_bind *mw_bind)
1291 {
1292 /* XXX reference counting in corresponding MR? */
1293 return mw->device->bind_mw ?
1294 mw->device->bind_mw(qp, mw, mw_bind) :
1295 -ENOSYS;
1296 }
1297
1298 /**
1299 * ib_dealloc_mw - Deallocates a memory window.
1300 * @mw: The memory window to deallocate.
1301 */
1302 int ib_dealloc_mw(struct ib_mw *mw);
1303
1304 /**
1305 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1306 * @pd: The protection domain associated with the unmapped region.
1307 * @mr_access_flags: Specifies the memory access rights.
1308 * @fmr_attr: Attributes of the unmapped region.
1309 *
1310 * A fast memory region must be mapped before it can be used as part of
1311 * a work request.
1312 */
1313 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1314 int mr_access_flags,
1315 struct ib_fmr_attr *fmr_attr);
1316
1317 /**
1318 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1319 * @fmr: The fast memory region to associate with the pages.
1320 * @page_list: An array of physical pages to map to the fast memory region.
1321 * @list_len: The number of pages in page_list.
1322 * @iova: The I/O virtual address to use with the mapped region.
1323 */
1324 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1325 u64 *page_list, int list_len,
1326 u64 iova)
1327 {
1328 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1329 }
1330
1331 /**
1332 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1333 * @fmr_list: A linked list of fast memory regions to unmap.
1334 */
1335 int ib_unmap_fmr(struct list_head *fmr_list);
1336
1337 /**
1338 * ib_dealloc_fmr - Deallocates a fast memory region.
1339 * @fmr: The fast memory region to deallocate.
1340 */
1341 int ib_dealloc_fmr(struct ib_fmr *fmr);
1342
1343 /**
1344 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1345 * @qp: QP to attach to the multicast group. The QP must be type
1346 * IB_QPT_UD.
1347 * @gid: Multicast group GID.
1348 * @lid: Multicast group LID in host byte order.
1349 *
1350 * In order to send and receive multicast packets, subnet
1351 * administration must have created the multicast group and configured
1352 * the fabric appropriately. The port associated with the specified
1353 * QP must also be a member of the multicast group.
1354 */
1355 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1356
1357 /**
1358 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1359 * @qp: QP to detach from the multicast group.
1360 * @gid: Multicast group GID.
1361 * @lid: Multicast group LID in host byte order.
1362 */
1363 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1364
1365 #endif /* IB_VERBS_H */
Linux kernel - Deliverables
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