aboutsummaryrefslogtreecommitdiffstats
path: root/include/rdma/ib_verbs.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/rdma/ib_verbs.h')
-rw-r--r--include/rdma/ib_verbs.h1461
1 files changed, 1461 insertions, 0 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
new file mode 100644
index 000000000000..e16cf94870f2
--- /dev/null
+++ b/include/rdma/ib_verbs.h
@@ -0,0 +1,1461 @@
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 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005 Cisco Systems. All rights reserved.
9 *
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:
15 *
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
18 * conditions are met:
19 *
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer.
23 *
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.
28 *
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
36 * SOFTWARE.
37 *
38 * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
39 */
40
41#if !defined(IB_VERBS_H)
42#define IB_VERBS_H
43
44#include <linux/types.h>
45#include <linux/device.h>
46
47#include <asm/atomic.h>
48#include <asm/scatterlist.h>
49#include <asm/uaccess.h>
50
51union ib_gid {
52 u8 raw[16];
53 struct {
54 __be64 subnet_prefix;
55 __be64 interface_id;
56 } global;
57};
58
59enum ib_node_type {
60 IB_NODE_CA = 1,
61 IB_NODE_SWITCH,
62 IB_NODE_ROUTER
63};
64
65enum ib_device_cap_flags {
66 IB_DEVICE_RESIZE_MAX_WR = 1,
67 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
68 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
69 IB_DEVICE_RAW_MULTI = (1<<3),
70 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
71 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
72 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
73 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
74 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
75 IB_DEVICE_INIT_TYPE = (1<<9),
76 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
77 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
78 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
79 IB_DEVICE_SRQ_RESIZE = (1<<13),
80 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
81};
82
83enum ib_atomic_cap {
84 IB_ATOMIC_NONE,
85 IB_ATOMIC_HCA,
86 IB_ATOMIC_GLOB
87};
88
89struct ib_device_attr {
90 u64 fw_ver;
91 __be64 node_guid;
92 __be64 sys_image_guid;
93 u64 max_mr_size;
94 u64 page_size_cap;
95 u32 vendor_id;
96 u32 vendor_part_id;
97 u32 hw_ver;
98 int max_qp;
99 int max_qp_wr;
100 int device_cap_flags;
101 int max_sge;
102 int max_sge_rd;
103 int max_cq;
104 int max_cqe;
105 int max_mr;
106 int max_pd;
107 int max_qp_rd_atom;
108 int max_ee_rd_atom;
109 int max_res_rd_atom;
110 int max_qp_init_rd_atom;
111 int max_ee_init_rd_atom;
112 enum ib_atomic_cap atomic_cap;
113 int max_ee;
114 int max_rdd;
115 int max_mw;
116 int max_raw_ipv6_qp;
117 int max_raw_ethy_qp;
118 int max_mcast_grp;
119 int max_mcast_qp_attach;
120 int max_total_mcast_qp_attach;
121 int max_ah;
122 int max_fmr;
123 int max_map_per_fmr;
124 int max_srq;
125 int max_srq_wr;
126 int max_srq_sge;
127 u16 max_pkeys;
128 u8 local_ca_ack_delay;
129};
130
131enum ib_mtu {
132 IB_MTU_256 = 1,
133 IB_MTU_512 = 2,
134 IB_MTU_1024 = 3,
135 IB_MTU_2048 = 4,
136 IB_MTU_4096 = 5
137};
138
139static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
140{
141 switch (mtu) {
142 case IB_MTU_256: return 256;
143 case IB_MTU_512: return 512;
144 case IB_MTU_1024: return 1024;
145 case IB_MTU_2048: return 2048;
146 case IB_MTU_4096: return 4096;
147 default: return -1;
148 }
149}
150
151enum ib_port_state {
152 IB_PORT_NOP = 0,
153 IB_PORT_DOWN = 1,
154 IB_PORT_INIT = 2,
155 IB_PORT_ARMED = 3,
156 IB_PORT_ACTIVE = 4,
157 IB_PORT_ACTIVE_DEFER = 5
158};
159
160enum ib_port_cap_flags {
161 IB_PORT_SM = 1 << 1,
162 IB_PORT_NOTICE_SUP = 1 << 2,
163 IB_PORT_TRAP_SUP = 1 << 3,
164 IB_PORT_OPT_IPD_SUP = 1 << 4,
165 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
166 IB_PORT_SL_MAP_SUP = 1 << 6,
167 IB_PORT_MKEY_NVRAM = 1 << 7,
168 IB_PORT_PKEY_NVRAM = 1 << 8,
169 IB_PORT_LED_INFO_SUP = 1 << 9,
170 IB_PORT_SM_DISABLED = 1 << 10,
171 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
172 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
173 IB_PORT_CM_SUP = 1 << 16,
174 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
175 IB_PORT_REINIT_SUP = 1 << 18,
176 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
177 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
178 IB_PORT_DR_NOTICE_SUP = 1 << 21,
179 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
180 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
181 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
182 IB_PORT_CLIENT_REG_SUP = 1 << 25
183};
184
185enum ib_port_width {
186 IB_WIDTH_1X = 1,
187 IB_WIDTH_4X = 2,
188 IB_WIDTH_8X = 4,
189 IB_WIDTH_12X = 8
190};
191
192static inline int ib_width_enum_to_int(enum ib_port_width width)
193{
194 switch (width) {
195 case IB_WIDTH_1X: return 1;
196 case IB_WIDTH_4X: return 4;
197 case IB_WIDTH_8X: return 8;
198 case IB_WIDTH_12X: return 12;
199 default: return -1;
200 }
201}
202
203struct ib_port_attr {
204 enum ib_port_state state;
205 enum ib_mtu max_mtu;
206 enum ib_mtu active_mtu;
207 int gid_tbl_len;
208 u32 port_cap_flags;
209 u32 max_msg_sz;
210 u32 bad_pkey_cntr;
211 u32 qkey_viol_cntr;
212 u16 pkey_tbl_len;
213 u16 lid;
214 u16 sm_lid;
215 u8 lmc;
216 u8 max_vl_num;
217 u8 sm_sl;
218 u8 subnet_timeout;
219 u8 init_type_reply;
220 u8 active_width;
221 u8 active_speed;
222 u8 phys_state;
223};
224
225enum ib_device_modify_flags {
226 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1
227};
228
229struct ib_device_modify {
230 u64 sys_image_guid;
231};
232
233enum ib_port_modify_flags {
234 IB_PORT_SHUTDOWN = 1,
235 IB_PORT_INIT_TYPE = (1<<2),
236 IB_PORT_RESET_QKEY_CNTR = (1<<3)
237};
238
239struct ib_port_modify {
240 u32 set_port_cap_mask;
241 u32 clr_port_cap_mask;
242 u8 init_type;
243};
244
245enum ib_event_type {
246 IB_EVENT_CQ_ERR,
247 IB_EVENT_QP_FATAL,
248 IB_EVENT_QP_REQ_ERR,
249 IB_EVENT_QP_ACCESS_ERR,
250 IB_EVENT_COMM_EST,
251 IB_EVENT_SQ_DRAINED,
252 IB_EVENT_PATH_MIG,
253 IB_EVENT_PATH_MIG_ERR,
254 IB_EVENT_DEVICE_FATAL,
255 IB_EVENT_PORT_ACTIVE,
256 IB_EVENT_PORT_ERR,
257 IB_EVENT_LID_CHANGE,
258 IB_EVENT_PKEY_CHANGE,
259 IB_EVENT_SM_CHANGE,
260 IB_EVENT_SRQ_ERR,
261 IB_EVENT_SRQ_LIMIT_REACHED,
262 IB_EVENT_QP_LAST_WQE_REACHED
263};
264
265struct ib_event {
266 struct ib_device *device;
267 union {
268 struct ib_cq *cq;
269 struct ib_qp *qp;
270 struct ib_srq *srq;
271 u8 port_num;
272 } element;
273 enum ib_event_type event;
274};
275
276struct ib_event_handler {
277 struct ib_device *device;
278 void (*handler)(struct ib_event_handler *, struct ib_event *);
279 struct list_head list;
280};
281
282#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
283 do { \
284 (_ptr)->device = _device; \
285 (_ptr)->handler = _handler; \
286 INIT_LIST_HEAD(&(_ptr)->list); \
287 } while (0)
288
289struct ib_global_route {
290 union ib_gid dgid;
291 u32 flow_label;
292 u8 sgid_index;
293 u8 hop_limit;
294 u8 traffic_class;
295};
296
297struct ib_grh {
298 __be32 version_tclass_flow;
299 __be16 paylen;
300 u8 next_hdr;
301 u8 hop_limit;
302 union ib_gid sgid;
303 union ib_gid dgid;
304};
305
306enum {
307 IB_MULTICAST_QPN = 0xffffff
308};
309
310#define IB_LID_PERMISSIVE __constant_htons(0xFFFF)
311
312enum ib_ah_flags {
313 IB_AH_GRH = 1
314};
315
316struct ib_ah_attr {
317 struct ib_global_route grh;
318 u16 dlid;
319 u8 sl;
320 u8 src_path_bits;
321 u8 static_rate;
322 u8 ah_flags;
323 u8 port_num;
324};
325
326enum ib_wc_status {
327 IB_WC_SUCCESS,
328 IB_WC_LOC_LEN_ERR,
329 IB_WC_LOC_QP_OP_ERR,
330 IB_WC_LOC_EEC_OP_ERR,
331 IB_WC_LOC_PROT_ERR,
332 IB_WC_WR_FLUSH_ERR,
333 IB_WC_MW_BIND_ERR,
334 IB_WC_BAD_RESP_ERR,
335 IB_WC_LOC_ACCESS_ERR,
336 IB_WC_REM_INV_REQ_ERR,
337 IB_WC_REM_ACCESS_ERR,
338 IB_WC_REM_OP_ERR,
339 IB_WC_RETRY_EXC_ERR,
340 IB_WC_RNR_RETRY_EXC_ERR,
341 IB_WC_LOC_RDD_VIOL_ERR,
342 IB_WC_REM_INV_RD_REQ_ERR,
343 IB_WC_REM_ABORT_ERR,
344 IB_WC_INV_EECN_ERR,
345 IB_WC_INV_EEC_STATE_ERR,
346 IB_WC_FATAL_ERR,
347 IB_WC_RESP_TIMEOUT_ERR,
348 IB_WC_GENERAL_ERR
349};
350
351enum ib_wc_opcode {
352 IB_WC_SEND,
353 IB_WC_RDMA_WRITE,
354 IB_WC_RDMA_READ,
355 IB_WC_COMP_SWAP,
356 IB_WC_FETCH_ADD,
357 IB_WC_BIND_MW,
358/*
359 * Set value of IB_WC_RECV so consumers can test if a completion is a
360 * receive by testing (opcode & IB_WC_RECV).
361 */
362 IB_WC_RECV = 1 << 7,
363 IB_WC_RECV_RDMA_WITH_IMM
364};
365
366enum ib_wc_flags {
367 IB_WC_GRH = 1,
368 IB_WC_WITH_IMM = (1<<1)
369};
370
371struct ib_wc {
372 u64 wr_id;
373 enum ib_wc_status status;
374 enum ib_wc_opcode opcode;
375 u32 vendor_err;
376 u32 byte_len;
377 __be32 imm_data;
378 u32 qp_num;
379 u32 src_qp;
380 int wc_flags;
381 u16 pkey_index;
382 u16 slid;
383 u8 sl;
384 u8 dlid_path_bits;
385 u8 port_num; /* valid only for DR SMPs on switches */
386};
387
388enum ib_cq_notify {
389 IB_CQ_SOLICITED,
390 IB_CQ_NEXT_COMP
391};
392
393enum ib_srq_attr_mask {
394 IB_SRQ_MAX_WR = 1 << 0,
395 IB_SRQ_LIMIT = 1 << 1,
396};
397
398struct ib_srq_attr {
399 u32 max_wr;
400 u32 max_sge;
401 u32 srq_limit;
402};
403
404struct ib_srq_init_attr {
405 void (*event_handler)(struct ib_event *, void *);
406 void *srq_context;
407 struct ib_srq_attr attr;
408};
409
410struct ib_qp_cap {
411 u32 max_send_wr;
412 u32 max_recv_wr;
413 u32 max_send_sge;
414 u32 max_recv_sge;
415 u32 max_inline_data;
416};
417
418enum ib_sig_type {
419 IB_SIGNAL_ALL_WR,
420 IB_SIGNAL_REQ_WR
421};
422
423enum ib_qp_type {
424 /*
425 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
426 * here (and in that order) since the MAD layer uses them as
427 * indices into a 2-entry table.
428 */
429 IB_QPT_SMI,
430 IB_QPT_GSI,
431
432 IB_QPT_RC,
433 IB_QPT_UC,
434 IB_QPT_UD,
435 IB_QPT_RAW_IPV6,
436 IB_QPT_RAW_ETY
437};
438
439struct ib_qp_init_attr {
440 void (*event_handler)(struct ib_event *, void *);
441 void *qp_context;
442 struct ib_cq *send_cq;
443 struct ib_cq *recv_cq;
444 struct ib_srq *srq;
445 struct ib_qp_cap cap;
446 enum ib_sig_type sq_sig_type;
447 enum ib_qp_type qp_type;
448 u8 port_num; /* special QP types only */
449};
450
451enum ib_rnr_timeout {
452 IB_RNR_TIMER_655_36 = 0,
453 IB_RNR_TIMER_000_01 = 1,
454 IB_RNR_TIMER_000_02 = 2,
455 IB_RNR_TIMER_000_03 = 3,
456 IB_RNR_TIMER_000_04 = 4,
457 IB_RNR_TIMER_000_06 = 5,
458 IB_RNR_TIMER_000_08 = 6,
459 IB_RNR_TIMER_000_12 = 7,
460 IB_RNR_TIMER_000_16 = 8,
461 IB_RNR_TIMER_000_24 = 9,
462 IB_RNR_TIMER_000_32 = 10,
463 IB_RNR_TIMER_000_48 = 11,
464 IB_RNR_TIMER_000_64 = 12,
465 IB_RNR_TIMER_000_96 = 13,
466 IB_RNR_TIMER_001_28 = 14,
467 IB_RNR_TIMER_001_92 = 15,
468 IB_RNR_TIMER_002_56 = 16,
469 IB_RNR_TIMER_003_84 = 17,
470 IB_RNR_TIMER_005_12 = 18,
471 IB_RNR_TIMER_007_68 = 19,
472 IB_RNR_TIMER_010_24 = 20,
473 IB_RNR_TIMER_015_36 = 21,
474 IB_RNR_TIMER_020_48 = 22,
475 IB_RNR_TIMER_030_72 = 23,
476 IB_RNR_TIMER_040_96 = 24,
477 IB_RNR_TIMER_061_44 = 25,
478 IB_RNR_TIMER_081_92 = 26,
479 IB_RNR_TIMER_122_88 = 27,
480 IB_RNR_TIMER_163_84 = 28,
481 IB_RNR_TIMER_245_76 = 29,
482 IB_RNR_TIMER_327_68 = 30,
483 IB_RNR_TIMER_491_52 = 31
484};
485
486enum ib_qp_attr_mask {
487 IB_QP_STATE = 1,
488 IB_QP_CUR_STATE = (1<<1),
489 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
490 IB_QP_ACCESS_FLAGS = (1<<3),
491 IB_QP_PKEY_INDEX = (1<<4),
492 IB_QP_PORT = (1<<5),
493 IB_QP_QKEY = (1<<6),
494 IB_QP_AV = (1<<7),
495 IB_QP_PATH_MTU = (1<<8),
496 IB_QP_TIMEOUT = (1<<9),
497 IB_QP_RETRY_CNT = (1<<10),
498 IB_QP_RNR_RETRY = (1<<11),
499 IB_QP_RQ_PSN = (1<<12),
500 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
501 IB_QP_ALT_PATH = (1<<14),
502 IB_QP_MIN_RNR_TIMER = (1<<15),
503 IB_QP_SQ_PSN = (1<<16),
504 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
505 IB_QP_PATH_MIG_STATE = (1<<18),
506 IB_QP_CAP = (1<<19),
507 IB_QP_DEST_QPN = (1<<20)
508};
509
510enum ib_qp_state {
511 IB_QPS_RESET,
512 IB_QPS_INIT,
513 IB_QPS_RTR,
514 IB_QPS_RTS,
515 IB_QPS_SQD,
516 IB_QPS_SQE,
517 IB_QPS_ERR
518};
519
520enum ib_mig_state {
521 IB_MIG_MIGRATED,
522 IB_MIG_REARM,
523 IB_MIG_ARMED
524};
525
526struct ib_qp_attr {
527 enum ib_qp_state qp_state;
528 enum ib_qp_state cur_qp_state;
529 enum ib_mtu path_mtu;
530 enum ib_mig_state path_mig_state;
531 u32 qkey;
532 u32 rq_psn;
533 u32 sq_psn;
534 u32 dest_qp_num;
535 int qp_access_flags;
536 struct ib_qp_cap cap;
537 struct ib_ah_attr ah_attr;
538 struct ib_ah_attr alt_ah_attr;
539 u16 pkey_index;
540 u16 alt_pkey_index;
541 u8 en_sqd_async_notify;
542 u8 sq_draining;
543 u8 max_rd_atomic;
544 u8 max_dest_rd_atomic;
545 u8 min_rnr_timer;
546 u8 port_num;
547 u8 timeout;
548 u8 retry_cnt;
549 u8 rnr_retry;
550 u8 alt_port_num;
551 u8 alt_timeout;
552};
553
554enum ib_wr_opcode {
555 IB_WR_RDMA_WRITE,
556 IB_WR_RDMA_WRITE_WITH_IMM,
557 IB_WR_SEND,
558 IB_WR_SEND_WITH_IMM,
559 IB_WR_RDMA_READ,
560 IB_WR_ATOMIC_CMP_AND_SWP,
561 IB_WR_ATOMIC_FETCH_AND_ADD
562};
563
564enum ib_send_flags {
565 IB_SEND_FENCE = 1,
566 IB_SEND_SIGNALED = (1<<1),
567 IB_SEND_SOLICITED = (1<<2),
568 IB_SEND_INLINE = (1<<3)
569};
570
571struct ib_sge {
572 u64 addr;
573 u32 length;
574 u32 lkey;
575};
576
577struct ib_send_wr {
578 struct ib_send_wr *next;
579 u64 wr_id;
580 struct ib_sge *sg_list;
581 int num_sge;
582 enum ib_wr_opcode opcode;
583 int send_flags;
584 __be32 imm_data;
585 union {
586 struct {
587 u64 remote_addr;
588 u32 rkey;
589 } rdma;
590 struct {
591 u64 remote_addr;
592 u64 compare_add;
593 u64 swap;
594 u32 rkey;
595 } atomic;
596 struct {
597 struct ib_ah *ah;
598 struct ib_mad_hdr *mad_hdr;
599 u32 remote_qpn;
600 u32 remote_qkey;
601 int timeout_ms; /* valid for MADs only */
602 int retries; /* valid for MADs only */
603 u16 pkey_index; /* valid for GSI only */
604 u8 port_num; /* valid for DR SMPs on switch only */
605 } ud;
606 } wr;
607};
608
609struct ib_recv_wr {
610 struct ib_recv_wr *next;
611 u64 wr_id;
612 struct ib_sge *sg_list;
613 int num_sge;
614};
615
616enum ib_access_flags {
617 IB_ACCESS_LOCAL_WRITE = 1,
618 IB_ACCESS_REMOTE_WRITE = (1<<1),
619 IB_ACCESS_REMOTE_READ = (1<<2),
620 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
621 IB_ACCESS_MW_BIND = (1<<4)
622};
623
624struct ib_phys_buf {
625 u64 addr;
626 u64 size;
627};
628
629struct ib_mr_attr {
630 struct ib_pd *pd;
631 u64 device_virt_addr;
632 u64 size;
633 int mr_access_flags;
634 u32 lkey;
635 u32 rkey;
636};
637
638enum ib_mr_rereg_flags {
639 IB_MR_REREG_TRANS = 1,
640 IB_MR_REREG_PD = (1<<1),
641 IB_MR_REREG_ACCESS = (1<<2)
642};
643
644struct ib_mw_bind {
645 struct ib_mr *mr;
646 u64 wr_id;
647 u64 addr;
648 u32 length;
649 int send_flags;
650 int mw_access_flags;
651};
652
653struct ib_fmr_attr {
654 int max_pages;
655 int max_maps;
656 u8 page_size;
657};
658
659struct ib_ucontext {
660 struct ib_device *device;
661 struct list_head pd_list;
662 struct list_head mr_list;
663 struct list_head mw_list;
664 struct list_head cq_list;
665 struct list_head qp_list;
666 struct list_head srq_list;
667 struct list_head ah_list;
668 spinlock_t lock;
669};
670
671struct ib_uobject {
672 u64 user_handle; /* handle given to us by userspace */
673 struct ib_ucontext *context; /* associated user context */
674 struct list_head list; /* link to context's list */
675 u32 id; /* index into kernel idr */
676};
677
678struct ib_umem {
679 unsigned long user_base;
680 unsigned long virt_base;
681 size_t length;
682 int offset;
683 int page_size;
684 int writable;
685 struct list_head chunk_list;
686};
687
688struct ib_umem_chunk {
689 struct list_head list;
690 int nents;
691 int nmap;
692 struct scatterlist page_list[0];
693};
694
695struct ib_udata {
696 void __user *inbuf;
697 void __user *outbuf;
698 size_t inlen;
699 size_t outlen;
700};
701
702#define IB_UMEM_MAX_PAGE_CHUNK \
703 ((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) / \
704 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] - \
705 (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
706
707struct ib_umem_object {
708 struct ib_uobject uobject;
709 struct ib_umem umem;
710};
711
712struct ib_pd {
713 struct ib_device *device;
714 struct ib_uobject *uobject;
715 atomic_t usecnt; /* count all resources */
716};
717
718struct ib_ah {
719 struct ib_device *device;
720 struct ib_pd *pd;
721 struct ib_uobject *uobject;
722};
723
724typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
725
726struct ib_cq {
727 struct ib_device *device;
728 struct ib_uobject *uobject;
729 ib_comp_handler comp_handler;
730 void (*event_handler)(struct ib_event *, void *);
731 void * cq_context;
732 int cqe;
733 atomic_t usecnt; /* count number of work queues */
734};
735
736struct ib_srq {
737 struct ib_device *device;
738 struct ib_pd *pd;
739 struct ib_uobject *uobject;
740 void (*event_handler)(struct ib_event *, void *);
741 void *srq_context;
742 atomic_t usecnt;
743};
744
745struct ib_qp {
746 struct ib_device *device;
747 struct ib_pd *pd;
748 struct ib_cq *send_cq;
749 struct ib_cq *recv_cq;
750 struct ib_srq *srq;
751 struct ib_uobject *uobject;
752 void (*event_handler)(struct ib_event *, void *);
753 void *qp_context;
754 u32 qp_num;
755 enum ib_qp_type qp_type;
756};
757
758struct ib_mr {
759 struct ib_device *device;
760 struct ib_pd *pd;
761 struct ib_uobject *uobject;
762 u32 lkey;
763 u32 rkey;
764 atomic_t usecnt; /* count number of MWs */
765};
766
767struct ib_mw {
768 struct ib_device *device;
769 struct ib_pd *pd;
770 struct ib_uobject *uobject;
771 u32 rkey;
772};
773
774struct ib_fmr {
775 struct ib_device *device;
776 struct ib_pd *pd;
777 struct list_head list;
778 u32 lkey;
779 u32 rkey;
780};
781
782struct ib_mad;
783struct ib_grh;
784
785enum ib_process_mad_flags {
786 IB_MAD_IGNORE_MKEY = 1,
787 IB_MAD_IGNORE_BKEY = 2,
788 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
789};
790
791enum ib_mad_result {
792 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
793 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
794 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
795 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
796};
797
798#define IB_DEVICE_NAME_MAX 64
799
800struct ib_cache {
801 rwlock_t lock;
802 struct ib_event_handler event_handler;
803 struct ib_pkey_cache **pkey_cache;
804 struct ib_gid_cache **gid_cache;
805};
806
807struct ib_device {
808 struct device *dma_device;
809
810 char name[IB_DEVICE_NAME_MAX];
811
812 struct list_head event_handler_list;
813 spinlock_t event_handler_lock;
814
815 struct list_head core_list;
816 struct list_head client_data_list;
817 spinlock_t client_data_lock;
818
819 struct ib_cache cache;
820
821 u32 flags;
822
823 int (*query_device)(struct ib_device *device,
824 struct ib_device_attr *device_attr);
825 int (*query_port)(struct ib_device *device,
826 u8 port_num,
827 struct ib_port_attr *port_attr);
828 int (*query_gid)(struct ib_device *device,
829 u8 port_num, int index,
830 union ib_gid *gid);
831 int (*query_pkey)(struct ib_device *device,
832 u8 port_num, u16 index, u16 *pkey);
833 int (*modify_device)(struct ib_device *device,
834 int device_modify_mask,
835 struct ib_device_modify *device_modify);
836 int (*modify_port)(struct ib_device *device,
837 u8 port_num, int port_modify_mask,
838 struct ib_port_modify *port_modify);
839 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
840 struct ib_udata *udata);
841 int (*dealloc_ucontext)(struct ib_ucontext *context);
842 int (*mmap)(struct ib_ucontext *context,
843 struct vm_area_struct *vma);
844 struct ib_pd * (*alloc_pd)(struct ib_device *device,
845 struct ib_ucontext *context,
846 struct ib_udata *udata);
847 int (*dealloc_pd)(struct ib_pd *pd);
848 struct ib_ah * (*create_ah)(struct ib_pd *pd,
849 struct ib_ah_attr *ah_attr);
850 int (*modify_ah)(struct ib_ah *ah,
851 struct ib_ah_attr *ah_attr);
852 int (*query_ah)(struct ib_ah *ah,
853 struct ib_ah_attr *ah_attr);
854 int (*destroy_ah)(struct ib_ah *ah);
855 struct ib_srq * (*create_srq)(struct ib_pd *pd,
856 struct ib_srq_init_attr *srq_init_attr,
857 struct ib_udata *udata);
858 int (*modify_srq)(struct ib_srq *srq,
859 struct ib_srq_attr *srq_attr,
860 enum ib_srq_attr_mask srq_attr_mask);
861 int (*query_srq)(struct ib_srq *srq,
862 struct ib_srq_attr *srq_attr);
863 int (*destroy_srq)(struct ib_srq *srq);
864 int (*post_srq_recv)(struct ib_srq *srq,
865 struct ib_recv_wr *recv_wr,
866 struct ib_recv_wr **bad_recv_wr);
867 struct ib_qp * (*create_qp)(struct ib_pd *pd,
868 struct ib_qp_init_attr *qp_init_attr,
869 struct ib_udata *udata);
870 int (*modify_qp)(struct ib_qp *qp,
871 struct ib_qp_attr *qp_attr,
872 int qp_attr_mask);
873 int (*query_qp)(struct ib_qp *qp,
874 struct ib_qp_attr *qp_attr,
875 int qp_attr_mask,
876 struct ib_qp_init_attr *qp_init_attr);
877 int (*destroy_qp)(struct ib_qp *qp);
878 int (*post_send)(struct ib_qp *qp,
879 struct ib_send_wr *send_wr,
880 struct ib_send_wr **bad_send_wr);
881 int (*post_recv)(struct ib_qp *qp,
882 struct ib_recv_wr *recv_wr,
883 struct ib_recv_wr **bad_recv_wr);
884 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
885 struct ib_ucontext *context,
886 struct ib_udata *udata);
887 int (*destroy_cq)(struct ib_cq *cq);
888 int (*resize_cq)(struct ib_cq *cq, int *cqe);
889 int (*poll_cq)(struct ib_cq *cq, int num_entries,
890 struct ib_wc *wc);
891 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
892 int (*req_notify_cq)(struct ib_cq *cq,
893 enum ib_cq_notify cq_notify);
894 int (*req_ncomp_notif)(struct ib_cq *cq,
895 int wc_cnt);
896 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
897 int mr_access_flags);
898 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
899 struct ib_phys_buf *phys_buf_array,
900 int num_phys_buf,
901 int mr_access_flags,
902 u64 *iova_start);
903 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
904 struct ib_umem *region,
905 int mr_access_flags,
906 struct ib_udata *udata);
907 int (*query_mr)(struct ib_mr *mr,
908 struct ib_mr_attr *mr_attr);
909 int (*dereg_mr)(struct ib_mr *mr);
910 int (*rereg_phys_mr)(struct ib_mr *mr,
911 int mr_rereg_mask,
912 struct ib_pd *pd,
913 struct ib_phys_buf *phys_buf_array,
914 int num_phys_buf,
915 int mr_access_flags,
916 u64 *iova_start);
917 struct ib_mw * (*alloc_mw)(struct ib_pd *pd);
918 int (*bind_mw)(struct ib_qp *qp,
919 struct ib_mw *mw,
920 struct ib_mw_bind *mw_bind);
921 int (*dealloc_mw)(struct ib_mw *mw);
922 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
923 int mr_access_flags,
924 struct ib_fmr_attr *fmr_attr);
925 int (*map_phys_fmr)(struct ib_fmr *fmr,
926 u64 *page_list, int list_len,
927 u64 iova);
928 int (*unmap_fmr)(struct list_head *fmr_list);
929 int (*dealloc_fmr)(struct ib_fmr *fmr);
930 int (*attach_mcast)(struct ib_qp *qp,
931 union ib_gid *gid,
932 u16 lid);
933 int (*detach_mcast)(struct ib_qp *qp,
934 union ib_gid *gid,
935 u16 lid);
936 int (*process_mad)(struct ib_device *device,
937 int process_mad_flags,
938 u8 port_num,
939 struct ib_wc *in_wc,
940 struct ib_grh *in_grh,
941 struct ib_mad *in_mad,
942 struct ib_mad *out_mad);
943
944 struct module *owner;
945 struct class_device class_dev;
946 struct kobject ports_parent;
947 struct list_head port_list;
948
949 enum {
950 IB_DEV_UNINITIALIZED,
951 IB_DEV_REGISTERED,
952 IB_DEV_UNREGISTERED
953 } reg_state;
954
955 u8 node_type;
956 u8 phys_port_cnt;
957};
958
959struct ib_client {
960 char *name;
961 void (*add) (struct ib_device *);
962 void (*remove)(struct ib_device *);
963
964 struct list_head list;
965};
966
967struct ib_device *ib_alloc_device(size_t size);
968void ib_dealloc_device(struct ib_device *device);
969
970int ib_register_device (struct ib_device *device);
971void ib_unregister_device(struct ib_device *device);
972
973int ib_register_client (struct ib_client *client);
974void ib_unregister_client(struct ib_client *client);
975
976void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
977void ib_set_client_data(struct ib_device *device, struct ib_client *client,
978 void *data);
979
980static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
981{
982 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
983}
984
985static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
986{
987 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
988}
989
990int ib_register_event_handler (struct ib_event_handler *event_handler);
991int ib_unregister_event_handler(struct ib_event_handler *event_handler);
992void ib_dispatch_event(struct ib_event *event);
993
994int ib_query_device(struct ib_device *device,
995 struct ib_device_attr *device_attr);
996
997int ib_query_port(struct ib_device *device,
998 u8 port_num, struct ib_port_attr *port_attr);
999
1000int ib_query_gid(struct ib_device *device,
1001 u8 port_num, int index, union ib_gid *gid);
1002
1003int ib_query_pkey(struct ib_device *device,
1004 u8 port_num, u16 index, u16 *pkey);
1005
1006int ib_modify_device(struct ib_device *device,
1007 int device_modify_mask,
1008 struct ib_device_modify *device_modify);
1009
1010int ib_modify_port(struct ib_device *device,
1011 u8 port_num, int port_modify_mask,
1012 struct ib_port_modify *port_modify);
1013
1014/**
1015 * ib_alloc_pd - Allocates an unused protection domain.
1016 * @device: The device on which to allocate the protection domain.
1017 *
1018 * A protection domain object provides an association between QPs, shared
1019 * receive queues, address handles, memory regions, and memory windows.
1020 */
1021struct ib_pd *ib_alloc_pd(struct ib_device *device);
1022
1023/**
1024 * ib_dealloc_pd - Deallocates a protection domain.
1025 * @pd: The protection domain to deallocate.
1026 */
1027int ib_dealloc_pd(struct ib_pd *pd);
1028
1029/**
1030 * ib_create_ah - Creates an address handle for the given address vector.
1031 * @pd: The protection domain associated with the address handle.
1032 * @ah_attr: The attributes of the address vector.
1033 *
1034 * The address handle is used to reference a local or global destination
1035 * in all UD QP post sends.
1036 */
1037struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1038
1039/**
1040 * ib_create_ah_from_wc - Creates an address handle associated with the
1041 * sender of the specified work completion.
1042 * @pd: The protection domain associated with the address handle.
1043 * @wc: Work completion information associated with a received message.
1044 * @grh: References the received global route header. This parameter is
1045 * ignored unless the work completion indicates that the GRH is valid.
1046 * @port_num: The outbound port number to associate with the address.
1047 *
1048 * The address handle is used to reference a local or global destination
1049 * in all UD QP post sends.
1050 */
1051struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1052 struct ib_grh *grh, u8 port_num);
1053
1054/**
1055 * ib_modify_ah - Modifies the address vector associated with an address
1056 * handle.
1057 * @ah: The address handle to modify.
1058 * @ah_attr: The new address vector attributes to associate with the
1059 * address handle.
1060 */
1061int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1062
1063/**
1064 * ib_query_ah - Queries the address vector associated with an address
1065 * handle.
1066 * @ah: The address handle to query.
1067 * @ah_attr: The address vector attributes associated with the address
1068 * handle.
1069 */
1070int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1071
1072/**
1073 * ib_destroy_ah - Destroys an address handle.
1074 * @ah: The address handle to destroy.
1075 */
1076int ib_destroy_ah(struct ib_ah *ah);
1077
1078/**
1079 * ib_create_srq - Creates a SRQ associated with the specified protection
1080 * domain.
1081 * @pd: The protection domain associated with the SRQ.
1082 * @srq_init_attr: A list of initial attributes required to create the SRQ.
1083 *
1084 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1085 * requested size of the SRQ, and set to the actual values allocated
1086 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1087 * will always be at least as large as the requested values.
1088 */
1089struct ib_srq *ib_create_srq(struct ib_pd *pd,
1090 struct ib_srq_init_attr *srq_init_attr);
1091
1092/**
1093 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1094 * @srq: The SRQ to modify.
1095 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1096 * the current values of selected SRQ attributes are returned.
1097 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1098 * are being modified.
1099 *
1100 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1101 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1102 * the number of receives queued drops below the limit.
1103 */
1104int ib_modify_srq(struct ib_srq *srq,
1105 struct ib_srq_attr *srq_attr,
1106 enum ib_srq_attr_mask srq_attr_mask);
1107
1108/**
1109 * ib_query_srq - Returns the attribute list and current values for the
1110 * specified SRQ.
1111 * @srq: The SRQ to query.
1112 * @srq_attr: The attributes of the specified SRQ.
1113 */
1114int ib_query_srq(struct ib_srq *srq,
1115 struct ib_srq_attr *srq_attr);
1116
1117/**
1118 * ib_destroy_srq - Destroys the specified SRQ.
1119 * @srq: The SRQ to destroy.
1120 */
1121int ib_destroy_srq(struct ib_srq *srq);
1122
1123/**
1124 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1125 * @srq: The SRQ to post the work request on.
1126 * @recv_wr: A list of work requests to post on the receive queue.
1127 * @bad_recv_wr: On an immediate failure, this parameter will reference
1128 * the work request that failed to be posted on the QP.
1129 */
1130static inline int ib_post_srq_recv(struct ib_srq *srq,
1131 struct ib_recv_wr *recv_wr,
1132 struct ib_recv_wr **bad_recv_wr)
1133{
1134 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1135}
1136
1137/**
1138 * ib_create_qp - Creates a QP associated with the specified protection
1139 * domain.
1140 * @pd: The protection domain associated with the QP.
1141 * @qp_init_attr: A list of initial attributes required to create the QP.
1142 */
1143struct ib_qp *ib_create_qp(struct ib_pd *pd,
1144 struct ib_qp_init_attr *qp_init_attr);
1145
1146/**
1147 * ib_modify_qp - Modifies the attributes for the specified QP and then
1148 * transitions the QP to the given state.
1149 * @qp: The QP to modify.
1150 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1151 * the current values of selected QP attributes are returned.
1152 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1153 * are being modified.
1154 */
1155int ib_modify_qp(struct ib_qp *qp,
1156 struct ib_qp_attr *qp_attr,
1157 int qp_attr_mask);
1158
1159/**
1160 * ib_query_qp - Returns the attribute list and current values for the
1161 * specified QP.
1162 * @qp: The QP to query.
1163 * @qp_attr: The attributes of the specified QP.
1164 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1165 * @qp_init_attr: Additional attributes of the selected QP.
1166 *
1167 * The qp_attr_mask may be used to limit the query to gathering only the
1168 * selected attributes.
1169 */
1170int ib_query_qp(struct ib_qp *qp,
1171 struct ib_qp_attr *qp_attr,
1172 int qp_attr_mask,
1173 struct ib_qp_init_attr *qp_init_attr);
1174
1175/**
1176 * ib_destroy_qp - Destroys the specified QP.
1177 * @qp: The QP to destroy.
1178 */
1179int ib_destroy_qp(struct ib_qp *qp);
1180
1181/**
1182 * ib_post_send - Posts a list of work requests to the send queue of
1183 * the specified QP.
1184 * @qp: The QP to post the work request on.
1185 * @send_wr: A list of work requests to post on the send queue.
1186 * @bad_send_wr: On an immediate failure, this parameter will reference
1187 * the work request that failed to be posted on the QP.
1188 */
1189static inline int ib_post_send(struct ib_qp *qp,
1190 struct ib_send_wr *send_wr,
1191 struct ib_send_wr **bad_send_wr)
1192{
1193 return qp->device->post_send(qp, send_wr, bad_send_wr);
1194}
1195
1196/**
1197 * ib_post_recv - Posts a list of work requests to the receive queue of
1198 * the specified QP.
1199 * @qp: The QP to post the work request on.
1200 * @recv_wr: A list of work requests to post on the receive queue.
1201 * @bad_recv_wr: On an immediate failure, this parameter will reference
1202 * the work request that failed to be posted on the QP.
1203 */
1204static inline int ib_post_recv(struct ib_qp *qp,
1205 struct ib_recv_wr *recv_wr,
1206 struct ib_recv_wr **bad_recv_wr)
1207{
1208 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
1209}
1210
1211/**
1212 * ib_create_cq - Creates a CQ on the specified device.
1213 * @device: The device on which to create the CQ.
1214 * @comp_handler: A user-specified callback that is invoked when a
1215 * completion event occurs on the CQ.
1216 * @event_handler: A user-specified callback that is invoked when an
1217 * asynchronous event not associated with a completion occurs on the CQ.
1218 * @cq_context: Context associated with the CQ returned to the user via
1219 * the associated completion and event handlers.
1220 * @cqe: The minimum size of the CQ.
1221 *
1222 * Users can examine the cq structure to determine the actual CQ size.
1223 */
1224struct ib_cq *ib_create_cq(struct ib_device *device,
1225 ib_comp_handler comp_handler,
1226 void (*event_handler)(struct ib_event *, void *),
1227 void *cq_context, int cqe);
1228
1229/**
1230 * ib_resize_cq - Modifies the capacity of the CQ.
1231 * @cq: The CQ to resize.
1232 * @cqe: The minimum size of the CQ.
1233 *
1234 * Users can examine the cq structure to determine the actual CQ size.
1235 */
1236int ib_resize_cq(struct ib_cq *cq, int cqe);
1237
1238/**
1239 * ib_destroy_cq - Destroys the specified CQ.
1240 * @cq: The CQ to destroy.
1241 */
1242int ib_destroy_cq(struct ib_cq *cq);
1243
1244/**
1245 * ib_poll_cq - poll a CQ for completion(s)
1246 * @cq:the CQ being polled
1247 * @num_entries:maximum number of completions to return
1248 * @wc:array of at least @num_entries &struct ib_wc where completions
1249 * will be returned
1250 *
1251 * Poll a CQ for (possibly multiple) completions. If the return value
1252 * is < 0, an error occurred. If the return value is >= 0, it is the
1253 * number of completions returned. If the return value is
1254 * non-negative and < num_entries, then the CQ was emptied.
1255 */
1256static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
1257 struct ib_wc *wc)
1258{
1259 return cq->device->poll_cq(cq, num_entries, wc);
1260}
1261
1262/**
1263 * ib_peek_cq - Returns the number of unreaped completions currently
1264 * on the specified CQ.
1265 * @cq: The CQ to peek.
1266 * @wc_cnt: A minimum number of unreaped completions to check for.
1267 *
1268 * If the number of unreaped completions is greater than or equal to wc_cnt,
1269 * this function returns wc_cnt, otherwise, it returns the actual number of
1270 * unreaped completions.
1271 */
1272int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
1273
1274/**
1275 * ib_req_notify_cq - Request completion notification on a CQ.
1276 * @cq: The CQ to generate an event for.
1277 * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
1278 * occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
1279 * notification will occur on the next completion.
1280 */
1281static inline int ib_req_notify_cq(struct ib_cq *cq,
1282 enum ib_cq_notify cq_notify)
1283{
1284 return cq->device->req_notify_cq(cq, cq_notify);
1285}
1286
1287/**
1288 * ib_req_ncomp_notif - Request completion notification when there are
1289 * at least the specified number of unreaped completions on the CQ.
1290 * @cq: The CQ to generate an event for.
1291 * @wc_cnt: The number of unreaped completions that should be on the
1292 * CQ before an event is generated.
1293 */
1294static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
1295{
1296 return cq->device->req_ncomp_notif ?
1297 cq->device->req_ncomp_notif(cq, wc_cnt) :
1298 -ENOSYS;
1299}
1300
1301/**
1302 * ib_get_dma_mr - Returns a memory region for system memory that is
1303 * usable for DMA.
1304 * @pd: The protection domain associated with the memory region.
1305 * @mr_access_flags: Specifies the memory access rights.
1306 */
1307struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
1308
1309/**
1310 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
1311 * by an HCA.
1312 * @pd: The protection domain associated assigned to the registered region.
1313 * @phys_buf_array: Specifies a list of physical buffers to use in the
1314 * memory region.
1315 * @num_phys_buf: Specifies the size of the phys_buf_array.
1316 * @mr_access_flags: Specifies the memory access rights.
1317 * @iova_start: The offset of the region's starting I/O virtual address.
1318 */
1319struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
1320 struct ib_phys_buf *phys_buf_array,
1321 int num_phys_buf,
1322 int mr_access_flags,
1323 u64 *iova_start);
1324
1325/**
1326 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
1327 * Conceptually, this call performs the functions deregister memory region
1328 * followed by register physical memory region. Where possible,
1329 * resources are reused instead of deallocated and reallocated.
1330 * @mr: The memory region to modify.
1331 * @mr_rereg_mask: A bit-mask used to indicate which of the following
1332 * properties of the memory region are being modified.
1333 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
1334 * the new protection domain to associated with the memory region,
1335 * otherwise, this parameter is ignored.
1336 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1337 * field specifies a list of physical buffers to use in the new
1338 * translation, otherwise, this parameter is ignored.
1339 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
1340 * field specifies the size of the phys_buf_array, otherwise, this
1341 * parameter is ignored.
1342 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
1343 * field specifies the new memory access rights, otherwise, this
1344 * parameter is ignored.
1345 * @iova_start: The offset of the region's starting I/O virtual address.
1346 */
1347int ib_rereg_phys_mr(struct ib_mr *mr,
1348 int mr_rereg_mask,
1349 struct ib_pd *pd,
1350 struct ib_phys_buf *phys_buf_array,
1351 int num_phys_buf,
1352 int mr_access_flags,
1353 u64 *iova_start);
1354
1355/**
1356 * ib_query_mr - Retrieves information about a specific memory region.
1357 * @mr: The memory region to retrieve information about.
1358 * @mr_attr: The attributes of the specified memory region.
1359 */
1360int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
1361
1362/**
1363 * ib_dereg_mr - Deregisters a memory region and removes it from the
1364 * HCA translation table.
1365 * @mr: The memory region to deregister.
1366 */
1367int ib_dereg_mr(struct ib_mr *mr);
1368
1369/**
1370 * ib_alloc_mw - Allocates a memory window.
1371 * @pd: The protection domain associated with the memory window.
1372 */
1373struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
1374
1375/**
1376 * ib_bind_mw - Posts a work request to the send queue of the specified
1377 * QP, which binds the memory window to the given address range and
1378 * remote access attributes.
1379 * @qp: QP to post the bind work request on.
1380 * @mw: The memory window to bind.
1381 * @mw_bind: Specifies information about the memory window, including
1382 * its address range, remote access rights, and associated memory region.
1383 */
1384static inline int ib_bind_mw(struct ib_qp *qp,
1385 struct ib_mw *mw,
1386 struct ib_mw_bind *mw_bind)
1387{
1388 /* XXX reference counting in corresponding MR? */
1389 return mw->device->bind_mw ?
1390 mw->device->bind_mw(qp, mw, mw_bind) :
1391 -ENOSYS;
1392}
1393
1394/**
1395 * ib_dealloc_mw - Deallocates a memory window.
1396 * @mw: The memory window to deallocate.
1397 */
1398int ib_dealloc_mw(struct ib_mw *mw);
1399
1400/**
1401 * ib_alloc_fmr - Allocates a unmapped fast memory region.
1402 * @pd: The protection domain associated with the unmapped region.
1403 * @mr_access_flags: Specifies the memory access rights.
1404 * @fmr_attr: Attributes of the unmapped region.
1405 *
1406 * A fast memory region must be mapped before it can be used as part of
1407 * a work request.
1408 */
1409struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
1410 int mr_access_flags,
1411 struct ib_fmr_attr *fmr_attr);
1412
1413/**
1414 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
1415 * @fmr: The fast memory region to associate with the pages.
1416 * @page_list: An array of physical pages to map to the fast memory region.
1417 * @list_len: The number of pages in page_list.
1418 * @iova: The I/O virtual address to use with the mapped region.
1419 */
1420static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
1421 u64 *page_list, int list_len,
1422 u64 iova)
1423{
1424 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
1425}
1426
1427/**
1428 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
1429 * @fmr_list: A linked list of fast memory regions to unmap.
1430 */
1431int ib_unmap_fmr(struct list_head *fmr_list);
1432
1433/**
1434 * ib_dealloc_fmr - Deallocates a fast memory region.
1435 * @fmr: The fast memory region to deallocate.
1436 */
1437int ib_dealloc_fmr(struct ib_fmr *fmr);
1438
1439/**
1440 * ib_attach_mcast - Attaches the specified QP to a multicast group.
1441 * @qp: QP to attach to the multicast group. The QP must be type
1442 * IB_QPT_UD.
1443 * @gid: Multicast group GID.
1444 * @lid: Multicast group LID in host byte order.
1445 *
1446 * In order to send and receive multicast packets, subnet
1447 * administration must have created the multicast group and configured
1448 * the fabric appropriately. The port associated with the specified
1449 * QP must also be a member of the multicast group.
1450 */
1451int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1452
1453/**
1454 * ib_detach_mcast - Detaches the specified QP from a multicast group.
1455 * @qp: QP to detach from the multicast group.
1456 * @gid: Multicast group GID.
1457 * @lid: Multicast group LID in host byte order.
1458 */
1459int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
1460
1461#endif /* IB_VERBS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 15:44:10 -0500