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1da177e4 LT |
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. | |
2a1d9b7f | 7 | * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. |
f7c6a7b5 | 8 | * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved. |
1da177e4 LT |
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. | |
1da177e4 LT |
37 | */ |
38 | ||
39 | #if !defined(IB_VERBS_H) | |
40 | #define IB_VERBS_H | |
41 | ||
42 | #include <linux/types.h> | |
43 | #include <linux/device.h> | |
9b513090 RC |
44 | #include <linux/mm.h> |
45 | #include <linux/dma-mapping.h> | |
459d6e2a | 46 | #include <linux/kref.h> |
bfb3ea12 DB |
47 | #include <linux/list.h> |
48 | #include <linux/rwsem.h> | |
87ae9afd | 49 | #include <linux/scatterlist.h> |
f0626710 | 50 | #include <linux/workqueue.h> |
e2773c06 | 51 | |
60063497 | 52 | #include <linux/atomic.h> |
e2773c06 | 53 | #include <asm/uaccess.h> |
1da177e4 | 54 | |
f0626710 TH |
55 | extern struct workqueue_struct *ib_wq; |
56 | ||
1da177e4 LT |
57 | union ib_gid { |
58 | u8 raw[16]; | |
59 | struct { | |
97f52eb4 SH |
60 | __be64 subnet_prefix; |
61 | __be64 interface_id; | |
1da177e4 LT |
62 | } global; |
63 | }; | |
64 | ||
07ebafba TT |
65 | enum rdma_node_type { |
66 | /* IB values map to NodeInfo:NodeType. */ | |
67 | RDMA_NODE_IB_CA = 1, | |
68 | RDMA_NODE_IB_SWITCH, | |
69 | RDMA_NODE_IB_ROUTER, | |
70 | RDMA_NODE_RNIC | |
1da177e4 LT |
71 | }; |
72 | ||
07ebafba TT |
73 | enum rdma_transport_type { |
74 | RDMA_TRANSPORT_IB, | |
75 | RDMA_TRANSPORT_IWARP | |
76 | }; | |
77 | ||
78 | enum rdma_transport_type | |
79 | rdma_node_get_transport(enum rdma_node_type node_type) __attribute_const__; | |
80 | ||
a3f5adaf EC |
81 | enum rdma_link_layer { |
82 | IB_LINK_LAYER_UNSPECIFIED, | |
83 | IB_LINK_LAYER_INFINIBAND, | |
84 | IB_LINK_LAYER_ETHERNET, | |
85 | }; | |
86 | ||
1da177e4 LT |
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), | |
96f15c03 | 103 | IB_DEVICE_LOCAL_DMA_LKEY = (1<<15), |
0f39cf3d | 104 | IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */ |
e0605d91 EC |
105 | IB_DEVICE_MEM_WINDOW = (1<<17), |
106 | /* | |
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. | |
112 | */ | |
113 | IB_DEVICE_UD_IP_CSUM = (1<<18), | |
c93570f2 | 114 | IB_DEVICE_UD_TSO = (1<<19), |
59991f94 | 115 | IB_DEVICE_XRC = (1<<20), |
00f7ec36 | 116 | IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21), |
47ee1b9f | 117 | IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22), |
7083e42e SM |
118 | IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23), |
119 | IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24) | |
1da177e4 LT |
120 | }; |
121 | ||
122 | enum ib_atomic_cap { | |
123 | IB_ATOMIC_NONE, | |
124 | IB_ATOMIC_HCA, | |
125 | IB_ATOMIC_GLOB | |
126 | }; | |
127 | ||
128 | struct ib_device_attr { | |
129 | u64 fw_ver; | |
97f52eb4 | 130 | __be64 sys_image_guid; |
1da177e4 LT |
131 | u64 max_mr_size; |
132 | u64 page_size_cap; | |
133 | u32 vendor_id; | |
134 | u32 vendor_part_id; | |
135 | u32 hw_ver; | |
136 | int max_qp; | |
137 | int max_qp_wr; | |
138 | int device_cap_flags; | |
139 | int max_sge; | |
140 | int max_sge_rd; | |
141 | int max_cq; | |
142 | int max_cqe; | |
143 | int max_mr; | |
144 | int max_pd; | |
145 | int max_qp_rd_atom; | |
146 | int max_ee_rd_atom; | |
147 | int max_res_rd_atom; | |
148 | int max_qp_init_rd_atom; | |
149 | int max_ee_init_rd_atom; | |
150 | enum ib_atomic_cap atomic_cap; | |
5e80ba8f | 151 | enum ib_atomic_cap masked_atomic_cap; |
1da177e4 LT |
152 | int max_ee; |
153 | int max_rdd; | |
154 | int max_mw; | |
155 | int max_raw_ipv6_qp; | |
156 | int max_raw_ethy_qp; | |
157 | int max_mcast_grp; | |
158 | int max_mcast_qp_attach; | |
159 | int max_total_mcast_qp_attach; | |
160 | int max_ah; | |
161 | int max_fmr; | |
162 | int max_map_per_fmr; | |
163 | int max_srq; | |
164 | int max_srq_wr; | |
165 | int max_srq_sge; | |
00f7ec36 | 166 | unsigned int max_fast_reg_page_list_len; |
1da177e4 LT |
167 | u16 max_pkeys; |
168 | u8 local_ca_ack_delay; | |
169 | }; | |
170 | ||
171 | enum ib_mtu { | |
172 | IB_MTU_256 = 1, | |
173 | IB_MTU_512 = 2, | |
174 | IB_MTU_1024 = 3, | |
175 | IB_MTU_2048 = 4, | |
176 | IB_MTU_4096 = 5 | |
177 | }; | |
178 | ||
179 | static inline int ib_mtu_enum_to_int(enum ib_mtu mtu) | |
180 | { | |
181 | switch (mtu) { | |
182 | case IB_MTU_256: return 256; | |
183 | case IB_MTU_512: return 512; | |
184 | case IB_MTU_1024: return 1024; | |
185 | case IB_MTU_2048: return 2048; | |
186 | case IB_MTU_4096: return 4096; | |
187 | default: return -1; | |
188 | } | |
189 | } | |
190 | ||
191 | enum ib_port_state { | |
192 | IB_PORT_NOP = 0, | |
193 | IB_PORT_DOWN = 1, | |
194 | IB_PORT_INIT = 2, | |
195 | IB_PORT_ARMED = 3, | |
196 | IB_PORT_ACTIVE = 4, | |
197 | IB_PORT_ACTIVE_DEFER = 5 | |
198 | }; | |
199 | ||
200 | enum ib_port_cap_flags { | |
201 | IB_PORT_SM = 1 << 1, | |
202 | IB_PORT_NOTICE_SUP = 1 << 2, | |
203 | IB_PORT_TRAP_SUP = 1 << 3, | |
204 | IB_PORT_OPT_IPD_SUP = 1 << 4, | |
205 | IB_PORT_AUTO_MIGR_SUP = 1 << 5, | |
206 | IB_PORT_SL_MAP_SUP = 1 << 6, | |
207 | IB_PORT_MKEY_NVRAM = 1 << 7, | |
208 | IB_PORT_PKEY_NVRAM = 1 << 8, | |
209 | IB_PORT_LED_INFO_SUP = 1 << 9, | |
210 | IB_PORT_SM_DISABLED = 1 << 10, | |
211 | IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11, | |
212 | IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12, | |
71eeba16 | 213 | IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14, |
1da177e4 LT |
214 | IB_PORT_CM_SUP = 1 << 16, |
215 | IB_PORT_SNMP_TUNNEL_SUP = 1 << 17, | |
216 | IB_PORT_REINIT_SUP = 1 << 18, | |
217 | IB_PORT_DEVICE_MGMT_SUP = 1 << 19, | |
218 | IB_PORT_VENDOR_CLASS_SUP = 1 << 20, | |
219 | IB_PORT_DR_NOTICE_SUP = 1 << 21, | |
220 | IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22, | |
221 | IB_PORT_BOOT_MGMT_SUP = 1 << 23, | |
222 | IB_PORT_LINK_LATENCY_SUP = 1 << 24, | |
223 | IB_PORT_CLIENT_REG_SUP = 1 << 25 | |
224 | }; | |
225 | ||
226 | enum ib_port_width { | |
227 | IB_WIDTH_1X = 1, | |
228 | IB_WIDTH_4X = 2, | |
229 | IB_WIDTH_8X = 4, | |
230 | IB_WIDTH_12X = 8 | |
231 | }; | |
232 | ||
233 | static inline int ib_width_enum_to_int(enum ib_port_width width) | |
234 | { | |
235 | switch (width) { | |
236 | case IB_WIDTH_1X: return 1; | |
237 | case IB_WIDTH_4X: return 4; | |
238 | case IB_WIDTH_8X: return 8; | |
239 | case IB_WIDTH_12X: return 12; | |
240 | default: return -1; | |
241 | } | |
242 | } | |
243 | ||
2e96691c OG |
244 | enum ib_port_speed { |
245 | IB_SPEED_SDR = 1, | |
246 | IB_SPEED_DDR = 2, | |
247 | IB_SPEED_QDR = 4, | |
248 | IB_SPEED_FDR10 = 8, | |
249 | IB_SPEED_FDR = 16, | |
250 | IB_SPEED_EDR = 32 | |
251 | }; | |
252 | ||
7f624d02 SW |
253 | struct ib_protocol_stats { |
254 | /* TBD... */ | |
255 | }; | |
256 | ||
257 | struct iw_protocol_stats { | |
258 | u64 ipInReceives; | |
259 | u64 ipInHdrErrors; | |
260 | u64 ipInTooBigErrors; | |
261 | u64 ipInNoRoutes; | |
262 | u64 ipInAddrErrors; | |
263 | u64 ipInUnknownProtos; | |
264 | u64 ipInTruncatedPkts; | |
265 | u64 ipInDiscards; | |
266 | u64 ipInDelivers; | |
267 | u64 ipOutForwDatagrams; | |
268 | u64 ipOutRequests; | |
269 | u64 ipOutDiscards; | |
270 | u64 ipOutNoRoutes; | |
271 | u64 ipReasmTimeout; | |
272 | u64 ipReasmReqds; | |
273 | u64 ipReasmOKs; | |
274 | u64 ipReasmFails; | |
275 | u64 ipFragOKs; | |
276 | u64 ipFragFails; | |
277 | u64 ipFragCreates; | |
278 | u64 ipInMcastPkts; | |
279 | u64 ipOutMcastPkts; | |
280 | u64 ipInBcastPkts; | |
281 | u64 ipOutBcastPkts; | |
282 | ||
283 | u64 tcpRtoAlgorithm; | |
284 | u64 tcpRtoMin; | |
285 | u64 tcpRtoMax; | |
286 | u64 tcpMaxConn; | |
287 | u64 tcpActiveOpens; | |
288 | u64 tcpPassiveOpens; | |
289 | u64 tcpAttemptFails; | |
290 | u64 tcpEstabResets; | |
291 | u64 tcpCurrEstab; | |
292 | u64 tcpInSegs; | |
293 | u64 tcpOutSegs; | |
294 | u64 tcpRetransSegs; | |
295 | u64 tcpInErrs; | |
296 | u64 tcpOutRsts; | |
297 | }; | |
298 | ||
299 | union rdma_protocol_stats { | |
300 | struct ib_protocol_stats ib; | |
301 | struct iw_protocol_stats iw; | |
302 | }; | |
303 | ||
1da177e4 LT |
304 | struct ib_port_attr { |
305 | enum ib_port_state state; | |
306 | enum ib_mtu max_mtu; | |
307 | enum ib_mtu active_mtu; | |
308 | int gid_tbl_len; | |
309 | u32 port_cap_flags; | |
310 | u32 max_msg_sz; | |
311 | u32 bad_pkey_cntr; | |
312 | u32 qkey_viol_cntr; | |
313 | u16 pkey_tbl_len; | |
314 | u16 lid; | |
315 | u16 sm_lid; | |
316 | u8 lmc; | |
317 | u8 max_vl_num; | |
318 | u8 sm_sl; | |
319 | u8 subnet_timeout; | |
320 | u8 init_type_reply; | |
321 | u8 active_width; | |
322 | u8 active_speed; | |
323 | u8 phys_state; | |
324 | }; | |
325 | ||
326 | enum ib_device_modify_flags { | |
c5bcbbb9 RD |
327 | IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0, |
328 | IB_DEVICE_MODIFY_NODE_DESC = 1 << 1 | |
1da177e4 LT |
329 | }; |
330 | ||
331 | struct ib_device_modify { | |
332 | u64 sys_image_guid; | |
c5bcbbb9 | 333 | char node_desc[64]; |
1da177e4 LT |
334 | }; |
335 | ||
336 | enum ib_port_modify_flags { | |
337 | IB_PORT_SHUTDOWN = 1, | |
338 | IB_PORT_INIT_TYPE = (1<<2), | |
339 | IB_PORT_RESET_QKEY_CNTR = (1<<3) | |
340 | }; | |
341 | ||
342 | struct ib_port_modify { | |
343 | u32 set_port_cap_mask; | |
344 | u32 clr_port_cap_mask; | |
345 | u8 init_type; | |
346 | }; | |
347 | ||
348 | enum ib_event_type { | |
349 | IB_EVENT_CQ_ERR, | |
350 | IB_EVENT_QP_FATAL, | |
351 | IB_EVENT_QP_REQ_ERR, | |
352 | IB_EVENT_QP_ACCESS_ERR, | |
353 | IB_EVENT_COMM_EST, | |
354 | IB_EVENT_SQ_DRAINED, | |
355 | IB_EVENT_PATH_MIG, | |
356 | IB_EVENT_PATH_MIG_ERR, | |
357 | IB_EVENT_DEVICE_FATAL, | |
358 | IB_EVENT_PORT_ACTIVE, | |
359 | IB_EVENT_PORT_ERR, | |
360 | IB_EVENT_LID_CHANGE, | |
361 | IB_EVENT_PKEY_CHANGE, | |
d41fcc67 RD |
362 | IB_EVENT_SM_CHANGE, |
363 | IB_EVENT_SRQ_ERR, | |
364 | IB_EVENT_SRQ_LIMIT_REACHED, | |
63942c9a | 365 | IB_EVENT_QP_LAST_WQE_REACHED, |
761d90ed OG |
366 | IB_EVENT_CLIENT_REREGISTER, |
367 | IB_EVENT_GID_CHANGE, | |
1da177e4 LT |
368 | }; |
369 | ||
370 | struct ib_event { | |
371 | struct ib_device *device; | |
372 | union { | |
373 | struct ib_cq *cq; | |
374 | struct ib_qp *qp; | |
d41fcc67 | 375 | struct ib_srq *srq; |
1da177e4 LT |
376 | u8 port_num; |
377 | } element; | |
378 | enum ib_event_type event; | |
379 | }; | |
380 | ||
381 | struct ib_event_handler { | |
382 | struct ib_device *device; | |
383 | void (*handler)(struct ib_event_handler *, struct ib_event *); | |
384 | struct list_head list; | |
385 | }; | |
386 | ||
387 | #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \ | |
388 | do { \ | |
389 | (_ptr)->device = _device; \ | |
390 | (_ptr)->handler = _handler; \ | |
391 | INIT_LIST_HEAD(&(_ptr)->list); \ | |
392 | } while (0) | |
393 | ||
394 | struct ib_global_route { | |
395 | union ib_gid dgid; | |
396 | u32 flow_label; | |
397 | u8 sgid_index; | |
398 | u8 hop_limit; | |
399 | u8 traffic_class; | |
400 | }; | |
401 | ||
513789ed | 402 | struct ib_grh { |
97f52eb4 SH |
403 | __be32 version_tclass_flow; |
404 | __be16 paylen; | |
513789ed HR |
405 | u8 next_hdr; |
406 | u8 hop_limit; | |
407 | union ib_gid sgid; | |
408 | union ib_gid dgid; | |
409 | }; | |
410 | ||
1da177e4 LT |
411 | enum { |
412 | IB_MULTICAST_QPN = 0xffffff | |
413 | }; | |
414 | ||
f3a7c66b | 415 | #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF) |
97f52eb4 | 416 | |
1da177e4 LT |
417 | enum ib_ah_flags { |
418 | IB_AH_GRH = 1 | |
419 | }; | |
420 | ||
bf6a9e31 JM |
421 | enum ib_rate { |
422 | IB_RATE_PORT_CURRENT = 0, | |
423 | IB_RATE_2_5_GBPS = 2, | |
424 | IB_RATE_5_GBPS = 5, | |
425 | IB_RATE_10_GBPS = 3, | |
426 | IB_RATE_20_GBPS = 6, | |
427 | IB_RATE_30_GBPS = 4, | |
428 | IB_RATE_40_GBPS = 7, | |
429 | IB_RATE_60_GBPS = 8, | |
430 | IB_RATE_80_GBPS = 9, | |
71eeba16 MA |
431 | IB_RATE_120_GBPS = 10, |
432 | IB_RATE_14_GBPS = 11, | |
433 | IB_RATE_56_GBPS = 12, | |
434 | IB_RATE_112_GBPS = 13, | |
435 | IB_RATE_168_GBPS = 14, | |
436 | IB_RATE_25_GBPS = 15, | |
437 | IB_RATE_100_GBPS = 16, | |
438 | IB_RATE_200_GBPS = 17, | |
439 | IB_RATE_300_GBPS = 18 | |
bf6a9e31 JM |
440 | }; |
441 | ||
442 | /** | |
443 | * ib_rate_to_mult - Convert the IB rate enum to a multiple of the | |
444 | * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be | |
445 | * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec. | |
446 | * @rate: rate to convert. | |
447 | */ | |
448 | int ib_rate_to_mult(enum ib_rate rate) __attribute_const__; | |
449 | ||
71eeba16 MA |
450 | /** |
451 | * ib_rate_to_mbps - Convert the IB rate enum to Mbps. | |
452 | * For example, IB_RATE_2_5_GBPS will be converted to 2500. | |
453 | * @rate: rate to convert. | |
454 | */ | |
455 | int ib_rate_to_mbps(enum ib_rate rate) __attribute_const__; | |
456 | ||
bf6a9e31 JM |
457 | /** |
458 | * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate | |
459 | * enum. | |
460 | * @mult: multiple to convert. | |
461 | */ | |
462 | enum ib_rate mult_to_ib_rate(int mult) __attribute_const__; | |
463 | ||
1da177e4 LT |
464 | struct ib_ah_attr { |
465 | struct ib_global_route grh; | |
466 | u16 dlid; | |
467 | u8 sl; | |
468 | u8 src_path_bits; | |
469 | u8 static_rate; | |
470 | u8 ah_flags; | |
471 | u8 port_num; | |
472 | }; | |
473 | ||
474 | enum ib_wc_status { | |
475 | IB_WC_SUCCESS, | |
476 | IB_WC_LOC_LEN_ERR, | |
477 | IB_WC_LOC_QP_OP_ERR, | |
478 | IB_WC_LOC_EEC_OP_ERR, | |
479 | IB_WC_LOC_PROT_ERR, | |
480 | IB_WC_WR_FLUSH_ERR, | |
481 | IB_WC_MW_BIND_ERR, | |
482 | IB_WC_BAD_RESP_ERR, | |
483 | IB_WC_LOC_ACCESS_ERR, | |
484 | IB_WC_REM_INV_REQ_ERR, | |
485 | IB_WC_REM_ACCESS_ERR, | |
486 | IB_WC_REM_OP_ERR, | |
487 | IB_WC_RETRY_EXC_ERR, | |
488 | IB_WC_RNR_RETRY_EXC_ERR, | |
489 | IB_WC_LOC_RDD_VIOL_ERR, | |
490 | IB_WC_REM_INV_RD_REQ_ERR, | |
491 | IB_WC_REM_ABORT_ERR, | |
492 | IB_WC_INV_EECN_ERR, | |
493 | IB_WC_INV_EEC_STATE_ERR, | |
494 | IB_WC_FATAL_ERR, | |
495 | IB_WC_RESP_TIMEOUT_ERR, | |
496 | IB_WC_GENERAL_ERR | |
497 | }; | |
498 | ||
499 | enum ib_wc_opcode { | |
500 | IB_WC_SEND, | |
501 | IB_WC_RDMA_WRITE, | |
502 | IB_WC_RDMA_READ, | |
503 | IB_WC_COMP_SWAP, | |
504 | IB_WC_FETCH_ADD, | |
505 | IB_WC_BIND_MW, | |
c93570f2 | 506 | IB_WC_LSO, |
00f7ec36 SW |
507 | IB_WC_LOCAL_INV, |
508 | IB_WC_FAST_REG_MR, | |
5e80ba8f VS |
509 | IB_WC_MASKED_COMP_SWAP, |
510 | IB_WC_MASKED_FETCH_ADD, | |
1da177e4 LT |
511 | /* |
512 | * Set value of IB_WC_RECV so consumers can test if a completion is a | |
513 | * receive by testing (opcode & IB_WC_RECV). | |
514 | */ | |
515 | IB_WC_RECV = 1 << 7, | |
516 | IB_WC_RECV_RDMA_WITH_IMM | |
517 | }; | |
518 | ||
519 | enum ib_wc_flags { | |
520 | IB_WC_GRH = 1, | |
00f7ec36 SW |
521 | IB_WC_WITH_IMM = (1<<1), |
522 | IB_WC_WITH_INVALIDATE = (1<<2), | |
d927d505 | 523 | IB_WC_IP_CSUM_OK = (1<<3), |
1da177e4 LT |
524 | }; |
525 | ||
526 | struct ib_wc { | |
527 | u64 wr_id; | |
528 | enum ib_wc_status status; | |
529 | enum ib_wc_opcode opcode; | |
530 | u32 vendor_err; | |
531 | u32 byte_len; | |
062dbb69 | 532 | struct ib_qp *qp; |
00f7ec36 SW |
533 | union { |
534 | __be32 imm_data; | |
535 | u32 invalidate_rkey; | |
536 | } ex; | |
1da177e4 LT |
537 | u32 src_qp; |
538 | int wc_flags; | |
539 | u16 pkey_index; | |
540 | u16 slid; | |
541 | u8 sl; | |
542 | u8 dlid_path_bits; | |
543 | u8 port_num; /* valid only for DR SMPs on switches */ | |
544 | }; | |
545 | ||
ed23a727 RD |
546 | enum ib_cq_notify_flags { |
547 | IB_CQ_SOLICITED = 1 << 0, | |
548 | IB_CQ_NEXT_COMP = 1 << 1, | |
549 | IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP, | |
550 | IB_CQ_REPORT_MISSED_EVENTS = 1 << 2, | |
1da177e4 LT |
551 | }; |
552 | ||
96104eda | 553 | enum ib_srq_type { |
418d5130 SH |
554 | IB_SRQT_BASIC, |
555 | IB_SRQT_XRC | |
96104eda SH |
556 | }; |
557 | ||
d41fcc67 RD |
558 | enum ib_srq_attr_mask { |
559 | IB_SRQ_MAX_WR = 1 << 0, | |
560 | IB_SRQ_LIMIT = 1 << 1, | |
561 | }; | |
562 | ||
563 | struct ib_srq_attr { | |
564 | u32 max_wr; | |
565 | u32 max_sge; | |
566 | u32 srq_limit; | |
567 | }; | |
568 | ||
569 | struct ib_srq_init_attr { | |
570 | void (*event_handler)(struct ib_event *, void *); | |
571 | void *srq_context; | |
572 | struct ib_srq_attr attr; | |
96104eda | 573 | enum ib_srq_type srq_type; |
418d5130 SH |
574 | |
575 | union { | |
576 | struct { | |
577 | struct ib_xrcd *xrcd; | |
578 | struct ib_cq *cq; | |
579 | } xrc; | |
580 | } ext; | |
d41fcc67 RD |
581 | }; |
582 | ||
1da177e4 LT |
583 | struct ib_qp_cap { |
584 | u32 max_send_wr; | |
585 | u32 max_recv_wr; | |
586 | u32 max_send_sge; | |
587 | u32 max_recv_sge; | |
588 | u32 max_inline_data; | |
589 | }; | |
590 | ||
591 | enum ib_sig_type { | |
592 | IB_SIGNAL_ALL_WR, | |
593 | IB_SIGNAL_REQ_WR | |
594 | }; | |
595 | ||
596 | enum ib_qp_type { | |
597 | /* | |
598 | * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries | |
599 | * here (and in that order) since the MAD layer uses them as | |
600 | * indices into a 2-entry table. | |
601 | */ | |
602 | IB_QPT_SMI, | |
603 | IB_QPT_GSI, | |
604 | ||
605 | IB_QPT_RC, | |
606 | IB_QPT_UC, | |
607 | IB_QPT_UD, | |
608 | IB_QPT_RAW_IPV6, | |
b42b63cf | 609 | IB_QPT_RAW_ETHERTYPE, |
c938a616 | 610 | IB_QPT_RAW_PACKET = 8, |
b42b63cf SH |
611 | IB_QPT_XRC_INI = 9, |
612 | IB_QPT_XRC_TGT, | |
613 | IB_QPT_MAX | |
1da177e4 LT |
614 | }; |
615 | ||
b846f25a | 616 | enum ib_qp_create_flags { |
47ee1b9f RL |
617 | IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0, |
618 | IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1, | |
d2b57063 JM |
619 | /* reserve bits 26-31 for low level drivers' internal use */ |
620 | IB_QP_CREATE_RESERVED_START = 1 << 26, | |
621 | IB_QP_CREATE_RESERVED_END = 1 << 31, | |
b846f25a EC |
622 | }; |
623 | ||
1da177e4 LT |
624 | struct ib_qp_init_attr { |
625 | void (*event_handler)(struct ib_event *, void *); | |
626 | void *qp_context; | |
627 | struct ib_cq *send_cq; | |
628 | struct ib_cq *recv_cq; | |
629 | struct ib_srq *srq; | |
b42b63cf | 630 | struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
1da177e4 LT |
631 | struct ib_qp_cap cap; |
632 | enum ib_sig_type sq_sig_type; | |
633 | enum ib_qp_type qp_type; | |
b846f25a | 634 | enum ib_qp_create_flags create_flags; |
1da177e4 LT |
635 | u8 port_num; /* special QP types only */ |
636 | }; | |
637 | ||
0e0ec7e0 SH |
638 | struct ib_qp_open_attr { |
639 | void (*event_handler)(struct ib_event *, void *); | |
640 | void *qp_context; | |
641 | u32 qp_num; | |
642 | enum ib_qp_type qp_type; | |
643 | }; | |
644 | ||
1da177e4 LT |
645 | enum ib_rnr_timeout { |
646 | IB_RNR_TIMER_655_36 = 0, | |
647 | IB_RNR_TIMER_000_01 = 1, | |
648 | IB_RNR_TIMER_000_02 = 2, | |
649 | IB_RNR_TIMER_000_03 = 3, | |
650 | IB_RNR_TIMER_000_04 = 4, | |
651 | IB_RNR_TIMER_000_06 = 5, | |
652 | IB_RNR_TIMER_000_08 = 6, | |
653 | IB_RNR_TIMER_000_12 = 7, | |
654 | IB_RNR_TIMER_000_16 = 8, | |
655 | IB_RNR_TIMER_000_24 = 9, | |
656 | IB_RNR_TIMER_000_32 = 10, | |
657 | IB_RNR_TIMER_000_48 = 11, | |
658 | IB_RNR_TIMER_000_64 = 12, | |
659 | IB_RNR_TIMER_000_96 = 13, | |
660 | IB_RNR_TIMER_001_28 = 14, | |
661 | IB_RNR_TIMER_001_92 = 15, | |
662 | IB_RNR_TIMER_002_56 = 16, | |
663 | IB_RNR_TIMER_003_84 = 17, | |
664 | IB_RNR_TIMER_005_12 = 18, | |
665 | IB_RNR_TIMER_007_68 = 19, | |
666 | IB_RNR_TIMER_010_24 = 20, | |
667 | IB_RNR_TIMER_015_36 = 21, | |
668 | IB_RNR_TIMER_020_48 = 22, | |
669 | IB_RNR_TIMER_030_72 = 23, | |
670 | IB_RNR_TIMER_040_96 = 24, | |
671 | IB_RNR_TIMER_061_44 = 25, | |
672 | IB_RNR_TIMER_081_92 = 26, | |
673 | IB_RNR_TIMER_122_88 = 27, | |
674 | IB_RNR_TIMER_163_84 = 28, | |
675 | IB_RNR_TIMER_245_76 = 29, | |
676 | IB_RNR_TIMER_327_68 = 30, | |
677 | IB_RNR_TIMER_491_52 = 31 | |
678 | }; | |
679 | ||
680 | enum ib_qp_attr_mask { | |
681 | IB_QP_STATE = 1, | |
682 | IB_QP_CUR_STATE = (1<<1), | |
683 | IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2), | |
684 | IB_QP_ACCESS_FLAGS = (1<<3), | |
685 | IB_QP_PKEY_INDEX = (1<<4), | |
686 | IB_QP_PORT = (1<<5), | |
687 | IB_QP_QKEY = (1<<6), | |
688 | IB_QP_AV = (1<<7), | |
689 | IB_QP_PATH_MTU = (1<<8), | |
690 | IB_QP_TIMEOUT = (1<<9), | |
691 | IB_QP_RETRY_CNT = (1<<10), | |
692 | IB_QP_RNR_RETRY = (1<<11), | |
693 | IB_QP_RQ_PSN = (1<<12), | |
694 | IB_QP_MAX_QP_RD_ATOMIC = (1<<13), | |
695 | IB_QP_ALT_PATH = (1<<14), | |
696 | IB_QP_MIN_RNR_TIMER = (1<<15), | |
697 | IB_QP_SQ_PSN = (1<<16), | |
698 | IB_QP_MAX_DEST_RD_ATOMIC = (1<<17), | |
699 | IB_QP_PATH_MIG_STATE = (1<<18), | |
700 | IB_QP_CAP = (1<<19), | |
701 | IB_QP_DEST_QPN = (1<<20) | |
702 | }; | |
703 | ||
704 | enum ib_qp_state { | |
705 | IB_QPS_RESET, | |
706 | IB_QPS_INIT, | |
707 | IB_QPS_RTR, | |
708 | IB_QPS_RTS, | |
709 | IB_QPS_SQD, | |
710 | IB_QPS_SQE, | |
711 | IB_QPS_ERR | |
712 | }; | |
713 | ||
714 | enum ib_mig_state { | |
715 | IB_MIG_MIGRATED, | |
716 | IB_MIG_REARM, | |
717 | IB_MIG_ARMED | |
718 | }; | |
719 | ||
7083e42e SM |
720 | enum ib_mw_type { |
721 | IB_MW_TYPE_1 = 1, | |
722 | IB_MW_TYPE_2 = 2 | |
723 | }; | |
724 | ||
1da177e4 LT |
725 | struct ib_qp_attr { |
726 | enum ib_qp_state qp_state; | |
727 | enum ib_qp_state cur_qp_state; | |
728 | enum ib_mtu path_mtu; | |
729 | enum ib_mig_state path_mig_state; | |
730 | u32 qkey; | |
731 | u32 rq_psn; | |
732 | u32 sq_psn; | |
733 | u32 dest_qp_num; | |
734 | int qp_access_flags; | |
735 | struct ib_qp_cap cap; | |
736 | struct ib_ah_attr ah_attr; | |
737 | struct ib_ah_attr alt_ah_attr; | |
738 | u16 pkey_index; | |
739 | u16 alt_pkey_index; | |
740 | u8 en_sqd_async_notify; | |
741 | u8 sq_draining; | |
742 | u8 max_rd_atomic; | |
743 | u8 max_dest_rd_atomic; | |
744 | u8 min_rnr_timer; | |
745 | u8 port_num; | |
746 | u8 timeout; | |
747 | u8 retry_cnt; | |
748 | u8 rnr_retry; | |
749 | u8 alt_port_num; | |
750 | u8 alt_timeout; | |
751 | }; | |
752 | ||
753 | enum ib_wr_opcode { | |
754 | IB_WR_RDMA_WRITE, | |
755 | IB_WR_RDMA_WRITE_WITH_IMM, | |
756 | IB_WR_SEND, | |
757 | IB_WR_SEND_WITH_IMM, | |
758 | IB_WR_RDMA_READ, | |
759 | IB_WR_ATOMIC_CMP_AND_SWP, | |
c93570f2 | 760 | IB_WR_ATOMIC_FETCH_AND_ADD, |
0f39cf3d RD |
761 | IB_WR_LSO, |
762 | IB_WR_SEND_WITH_INV, | |
00f7ec36 SW |
763 | IB_WR_RDMA_READ_WITH_INV, |
764 | IB_WR_LOCAL_INV, | |
765 | IB_WR_FAST_REG_MR, | |
5e80ba8f VS |
766 | IB_WR_MASKED_ATOMIC_CMP_AND_SWP, |
767 | IB_WR_MASKED_ATOMIC_FETCH_AND_ADD, | |
7083e42e | 768 | IB_WR_BIND_MW, |
1da177e4 LT |
769 | }; |
770 | ||
771 | enum ib_send_flags { | |
772 | IB_SEND_FENCE = 1, | |
773 | IB_SEND_SIGNALED = (1<<1), | |
774 | IB_SEND_SOLICITED = (1<<2), | |
e0605d91 EC |
775 | IB_SEND_INLINE = (1<<3), |
776 | IB_SEND_IP_CSUM = (1<<4) | |
1da177e4 LT |
777 | }; |
778 | ||
779 | struct ib_sge { | |
780 | u64 addr; | |
781 | u32 length; | |
782 | u32 lkey; | |
783 | }; | |
784 | ||
00f7ec36 SW |
785 | struct ib_fast_reg_page_list { |
786 | struct ib_device *device; | |
787 | u64 *page_list; | |
788 | unsigned int max_page_list_len; | |
789 | }; | |
790 | ||
7083e42e SM |
791 | /** |
792 | * struct ib_mw_bind_info - Parameters for a memory window bind operation. | |
793 | * @mr: A memory region to bind the memory window to. | |
794 | * @addr: The address where the memory window should begin. | |
795 | * @length: The length of the memory window, in bytes. | |
796 | * @mw_access_flags: Access flags from enum ib_access_flags for the window. | |
797 | * | |
798 | * This struct contains the shared parameters for type 1 and type 2 | |
799 | * memory window bind operations. | |
800 | */ | |
801 | struct ib_mw_bind_info { | |
802 | struct ib_mr *mr; | |
803 | u64 addr; | |
804 | u64 length; | |
805 | int mw_access_flags; | |
806 | }; | |
807 | ||
1da177e4 LT |
808 | struct ib_send_wr { |
809 | struct ib_send_wr *next; | |
810 | u64 wr_id; | |
811 | struct ib_sge *sg_list; | |
812 | int num_sge; | |
813 | enum ib_wr_opcode opcode; | |
814 | int send_flags; | |
0f39cf3d RD |
815 | union { |
816 | __be32 imm_data; | |
817 | u32 invalidate_rkey; | |
818 | } ex; | |
1da177e4 LT |
819 | union { |
820 | struct { | |
821 | u64 remote_addr; | |
822 | u32 rkey; | |
823 | } rdma; | |
824 | struct { | |
825 | u64 remote_addr; | |
826 | u64 compare_add; | |
827 | u64 swap; | |
5e80ba8f VS |
828 | u64 compare_add_mask; |
829 | u64 swap_mask; | |
1da177e4 LT |
830 | u32 rkey; |
831 | } atomic; | |
832 | struct { | |
833 | struct ib_ah *ah; | |
c93570f2 EC |
834 | void *header; |
835 | int hlen; | |
836 | int mss; | |
1da177e4 LT |
837 | u32 remote_qpn; |
838 | u32 remote_qkey; | |
1da177e4 LT |
839 | u16 pkey_index; /* valid for GSI only */ |
840 | u8 port_num; /* valid for DR SMPs on switch only */ | |
841 | } ud; | |
00f7ec36 SW |
842 | struct { |
843 | u64 iova_start; | |
844 | struct ib_fast_reg_page_list *page_list; | |
845 | unsigned int page_shift; | |
846 | unsigned int page_list_len; | |
847 | u32 length; | |
848 | int access_flags; | |
849 | u32 rkey; | |
850 | } fast_reg; | |
7083e42e SM |
851 | struct { |
852 | struct ib_mw *mw; | |
853 | /* The new rkey for the memory window. */ | |
854 | u32 rkey; | |
855 | struct ib_mw_bind_info bind_info; | |
856 | } bind_mw; | |
1da177e4 | 857 | } wr; |
b42b63cf | 858 | u32 xrc_remote_srq_num; /* XRC TGT QPs only */ |
1da177e4 LT |
859 | }; |
860 | ||
861 | struct ib_recv_wr { | |
862 | struct ib_recv_wr *next; | |
863 | u64 wr_id; | |
864 | struct ib_sge *sg_list; | |
865 | int num_sge; | |
866 | }; | |
867 | ||
868 | enum ib_access_flags { | |
869 | IB_ACCESS_LOCAL_WRITE = 1, | |
870 | IB_ACCESS_REMOTE_WRITE = (1<<1), | |
871 | IB_ACCESS_REMOTE_READ = (1<<2), | |
872 | IB_ACCESS_REMOTE_ATOMIC = (1<<3), | |
7083e42e SM |
873 | IB_ACCESS_MW_BIND = (1<<4), |
874 | IB_ZERO_BASED = (1<<5) | |
1da177e4 LT |
875 | }; |
876 | ||
877 | struct ib_phys_buf { | |
878 | u64 addr; | |
879 | u64 size; | |
880 | }; | |
881 | ||
882 | struct ib_mr_attr { | |
883 | struct ib_pd *pd; | |
884 | u64 device_virt_addr; | |
885 | u64 size; | |
886 | int mr_access_flags; | |
887 | u32 lkey; | |
888 | u32 rkey; | |
889 | }; | |
890 | ||
891 | enum ib_mr_rereg_flags { | |
892 | IB_MR_REREG_TRANS = 1, | |
893 | IB_MR_REREG_PD = (1<<1), | |
894 | IB_MR_REREG_ACCESS = (1<<2) | |
895 | }; | |
896 | ||
7083e42e SM |
897 | /** |
898 | * struct ib_mw_bind - Parameters for a type 1 memory window bind operation. | |
899 | * @wr_id: Work request id. | |
900 | * @send_flags: Flags from ib_send_flags enum. | |
901 | * @bind_info: More parameters of the bind operation. | |
902 | */ | |
1da177e4 | 903 | struct ib_mw_bind { |
7083e42e SM |
904 | u64 wr_id; |
905 | int send_flags; | |
906 | struct ib_mw_bind_info bind_info; | |
1da177e4 LT |
907 | }; |
908 | ||
909 | struct ib_fmr_attr { | |
910 | int max_pages; | |
911 | int max_maps; | |
d36f34aa | 912 | u8 page_shift; |
1da177e4 LT |
913 | }; |
914 | ||
e2773c06 RD |
915 | struct ib_ucontext { |
916 | struct ib_device *device; | |
917 | struct list_head pd_list; | |
918 | struct list_head mr_list; | |
919 | struct list_head mw_list; | |
920 | struct list_head cq_list; | |
921 | struct list_head qp_list; | |
922 | struct list_head srq_list; | |
923 | struct list_head ah_list; | |
53d0bd1e | 924 | struct list_head xrcd_list; |
f7c6a7b5 | 925 | int closing; |
e2773c06 RD |
926 | }; |
927 | ||
928 | struct ib_uobject { | |
929 | u64 user_handle; /* handle given to us by userspace */ | |
930 | struct ib_ucontext *context; /* associated user context */ | |
9ead190b | 931 | void *object; /* containing object */ |
e2773c06 | 932 | struct list_head list; /* link to context's list */ |
b3d636b0 | 933 | int id; /* index into kernel idr */ |
9ead190b RD |
934 | struct kref ref; |
935 | struct rw_semaphore mutex; /* protects .live */ | |
936 | int live; | |
e2773c06 RD |
937 | }; |
938 | ||
e2773c06 RD |
939 | struct ib_udata { |
940 | void __user *inbuf; | |
941 | void __user *outbuf; | |
942 | size_t inlen; | |
943 | size_t outlen; | |
944 | }; | |
945 | ||
1da177e4 | 946 | struct ib_pd { |
e2773c06 RD |
947 | struct ib_device *device; |
948 | struct ib_uobject *uobject; | |
949 | atomic_t usecnt; /* count all resources */ | |
1da177e4 LT |
950 | }; |
951 | ||
59991f94 SH |
952 | struct ib_xrcd { |
953 | struct ib_device *device; | |
d3d72d90 | 954 | atomic_t usecnt; /* count all exposed resources */ |
53d0bd1e | 955 | struct inode *inode; |
d3d72d90 SH |
956 | |
957 | struct mutex tgt_qp_mutex; | |
958 | struct list_head tgt_qp_list; | |
59991f94 SH |
959 | }; |
960 | ||
1da177e4 LT |
961 | struct ib_ah { |
962 | struct ib_device *device; | |
963 | struct ib_pd *pd; | |
e2773c06 | 964 | struct ib_uobject *uobject; |
1da177e4 LT |
965 | }; |
966 | ||
967 | typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context); | |
968 | ||
969 | struct ib_cq { | |
e2773c06 RD |
970 | struct ib_device *device; |
971 | struct ib_uobject *uobject; | |
972 | ib_comp_handler comp_handler; | |
973 | void (*event_handler)(struct ib_event *, void *); | |
4deccd6d | 974 | void *cq_context; |
e2773c06 RD |
975 | int cqe; |
976 | atomic_t usecnt; /* count number of work queues */ | |
1da177e4 LT |
977 | }; |
978 | ||
979 | struct ib_srq { | |
d41fcc67 RD |
980 | struct ib_device *device; |
981 | struct ib_pd *pd; | |
982 | struct ib_uobject *uobject; | |
983 | void (*event_handler)(struct ib_event *, void *); | |
984 | void *srq_context; | |
96104eda | 985 | enum ib_srq_type srq_type; |
1da177e4 | 986 | atomic_t usecnt; |
418d5130 SH |
987 | |
988 | union { | |
989 | struct { | |
990 | struct ib_xrcd *xrcd; | |
991 | struct ib_cq *cq; | |
992 | u32 srq_num; | |
993 | } xrc; | |
994 | } ext; | |
1da177e4 LT |
995 | }; |
996 | ||
997 | struct ib_qp { | |
998 | struct ib_device *device; | |
999 | struct ib_pd *pd; | |
1000 | struct ib_cq *send_cq; | |
1001 | struct ib_cq *recv_cq; | |
1002 | struct ib_srq *srq; | |
b42b63cf | 1003 | struct ib_xrcd *xrcd; /* XRC TGT QPs only */ |
d3d72d90 | 1004 | struct list_head xrcd_list; |
c3bccbfb | 1005 | atomic_t usecnt; /* count times opened, mcast attaches */ |
0e0ec7e0 SH |
1006 | struct list_head open_list; |
1007 | struct ib_qp *real_qp; | |
e2773c06 | 1008 | struct ib_uobject *uobject; |
1da177e4 LT |
1009 | void (*event_handler)(struct ib_event *, void *); |
1010 | void *qp_context; | |
1011 | u32 qp_num; | |
1012 | enum ib_qp_type qp_type; | |
1013 | }; | |
1014 | ||
1015 | struct ib_mr { | |
e2773c06 RD |
1016 | struct ib_device *device; |
1017 | struct ib_pd *pd; | |
1018 | struct ib_uobject *uobject; | |
1019 | u32 lkey; | |
1020 | u32 rkey; | |
1021 | atomic_t usecnt; /* count number of MWs */ | |
1da177e4 LT |
1022 | }; |
1023 | ||
1024 | struct ib_mw { | |
1025 | struct ib_device *device; | |
1026 | struct ib_pd *pd; | |
e2773c06 | 1027 | struct ib_uobject *uobject; |
1da177e4 | 1028 | u32 rkey; |
7083e42e | 1029 | enum ib_mw_type type; |
1da177e4 LT |
1030 | }; |
1031 | ||
1032 | struct ib_fmr { | |
1033 | struct ib_device *device; | |
1034 | struct ib_pd *pd; | |
1035 | struct list_head list; | |
1036 | u32 lkey; | |
1037 | u32 rkey; | |
1038 | }; | |
1039 | ||
1040 | struct ib_mad; | |
1041 | struct ib_grh; | |
1042 | ||
1043 | enum ib_process_mad_flags { | |
1044 | IB_MAD_IGNORE_MKEY = 1, | |
1045 | IB_MAD_IGNORE_BKEY = 2, | |
1046 | IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY | |
1047 | }; | |
1048 | ||
1049 | enum ib_mad_result { | |
1050 | IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */ | |
1051 | IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */ | |
1052 | IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */ | |
1053 | IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */ | |
1054 | }; | |
1055 | ||
1056 | #define IB_DEVICE_NAME_MAX 64 | |
1057 | ||
1058 | struct ib_cache { | |
1059 | rwlock_t lock; | |
1060 | struct ib_event_handler event_handler; | |
1061 | struct ib_pkey_cache **pkey_cache; | |
1062 | struct ib_gid_cache **gid_cache; | |
6fb9cdbf | 1063 | u8 *lmc_cache; |
1da177e4 LT |
1064 | }; |
1065 | ||
9b513090 RC |
1066 | struct ib_dma_mapping_ops { |
1067 | int (*mapping_error)(struct ib_device *dev, | |
1068 | u64 dma_addr); | |
1069 | u64 (*map_single)(struct ib_device *dev, | |
1070 | void *ptr, size_t size, | |
1071 | enum dma_data_direction direction); | |
1072 | void (*unmap_single)(struct ib_device *dev, | |
1073 | u64 addr, size_t size, | |
1074 | enum dma_data_direction direction); | |
1075 | u64 (*map_page)(struct ib_device *dev, | |
1076 | struct page *page, unsigned long offset, | |
1077 | size_t size, | |
1078 | enum dma_data_direction direction); | |
1079 | void (*unmap_page)(struct ib_device *dev, | |
1080 | u64 addr, size_t size, | |
1081 | enum dma_data_direction direction); | |
1082 | int (*map_sg)(struct ib_device *dev, | |
1083 | struct scatterlist *sg, int nents, | |
1084 | enum dma_data_direction direction); | |
1085 | void (*unmap_sg)(struct ib_device *dev, | |
1086 | struct scatterlist *sg, int nents, | |
1087 | enum dma_data_direction direction); | |
1088 | u64 (*dma_address)(struct ib_device *dev, | |
1089 | struct scatterlist *sg); | |
1090 | unsigned int (*dma_len)(struct ib_device *dev, | |
1091 | struct scatterlist *sg); | |
1092 | void (*sync_single_for_cpu)(struct ib_device *dev, | |
1093 | u64 dma_handle, | |
1094 | size_t size, | |
4deccd6d | 1095 | enum dma_data_direction dir); |
9b513090 RC |
1096 | void (*sync_single_for_device)(struct ib_device *dev, |
1097 | u64 dma_handle, | |
1098 | size_t size, | |
1099 | enum dma_data_direction dir); | |
1100 | void *(*alloc_coherent)(struct ib_device *dev, | |
1101 | size_t size, | |
1102 | u64 *dma_handle, | |
1103 | gfp_t flag); | |
1104 | void (*free_coherent)(struct ib_device *dev, | |
1105 | size_t size, void *cpu_addr, | |
1106 | u64 dma_handle); | |
1107 | }; | |
1108 | ||
07ebafba TT |
1109 | struct iw_cm_verbs; |
1110 | ||
1da177e4 LT |
1111 | struct ib_device { |
1112 | struct device *dma_device; | |
1113 | ||
1114 | char name[IB_DEVICE_NAME_MAX]; | |
1115 | ||
1116 | struct list_head event_handler_list; | |
1117 | spinlock_t event_handler_lock; | |
1118 | ||
17a55f79 | 1119 | spinlock_t client_data_lock; |
1da177e4 LT |
1120 | struct list_head core_list; |
1121 | struct list_head client_data_list; | |
1da177e4 LT |
1122 | |
1123 | struct ib_cache cache; | |
5eb620c8 YE |
1124 | int *pkey_tbl_len; |
1125 | int *gid_tbl_len; | |
1da177e4 | 1126 | |
f4fd0b22 MT |
1127 | int num_comp_vectors; |
1128 | ||
07ebafba TT |
1129 | struct iw_cm_verbs *iwcm; |
1130 | ||
7f624d02 SW |
1131 | int (*get_protocol_stats)(struct ib_device *device, |
1132 | union rdma_protocol_stats *stats); | |
1da177e4 LT |
1133 | int (*query_device)(struct ib_device *device, |
1134 | struct ib_device_attr *device_attr); | |
1135 | int (*query_port)(struct ib_device *device, | |
1136 | u8 port_num, | |
1137 | struct ib_port_attr *port_attr); | |
a3f5adaf EC |
1138 | enum rdma_link_layer (*get_link_layer)(struct ib_device *device, |
1139 | u8 port_num); | |
1da177e4 LT |
1140 | int (*query_gid)(struct ib_device *device, |
1141 | u8 port_num, int index, | |
1142 | union ib_gid *gid); | |
1143 | int (*query_pkey)(struct ib_device *device, | |
1144 | u8 port_num, u16 index, u16 *pkey); | |
1145 | int (*modify_device)(struct ib_device *device, | |
1146 | int device_modify_mask, | |
1147 | struct ib_device_modify *device_modify); | |
1148 | int (*modify_port)(struct ib_device *device, | |
1149 | u8 port_num, int port_modify_mask, | |
1150 | struct ib_port_modify *port_modify); | |
e2773c06 RD |
1151 | struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device, |
1152 | struct ib_udata *udata); | |
1153 | int (*dealloc_ucontext)(struct ib_ucontext *context); | |
1154 | int (*mmap)(struct ib_ucontext *context, | |
1155 | struct vm_area_struct *vma); | |
1156 | struct ib_pd * (*alloc_pd)(struct ib_device *device, | |
1157 | struct ib_ucontext *context, | |
1158 | struct ib_udata *udata); | |
1da177e4 LT |
1159 | int (*dealloc_pd)(struct ib_pd *pd); |
1160 | struct ib_ah * (*create_ah)(struct ib_pd *pd, | |
1161 | struct ib_ah_attr *ah_attr); | |
1162 | int (*modify_ah)(struct ib_ah *ah, | |
1163 | struct ib_ah_attr *ah_attr); | |
1164 | int (*query_ah)(struct ib_ah *ah, | |
1165 | struct ib_ah_attr *ah_attr); | |
1166 | int (*destroy_ah)(struct ib_ah *ah); | |
d41fcc67 RD |
1167 | struct ib_srq * (*create_srq)(struct ib_pd *pd, |
1168 | struct ib_srq_init_attr *srq_init_attr, | |
1169 | struct ib_udata *udata); | |
1170 | int (*modify_srq)(struct ib_srq *srq, | |
1171 | struct ib_srq_attr *srq_attr, | |
9bc57e2d RC |
1172 | enum ib_srq_attr_mask srq_attr_mask, |
1173 | struct ib_udata *udata); | |
d41fcc67 RD |
1174 | int (*query_srq)(struct ib_srq *srq, |
1175 | struct ib_srq_attr *srq_attr); | |
1176 | int (*destroy_srq)(struct ib_srq *srq); | |
1177 | int (*post_srq_recv)(struct ib_srq *srq, | |
1178 | struct ib_recv_wr *recv_wr, | |
1179 | struct ib_recv_wr **bad_recv_wr); | |
1da177e4 | 1180 | struct ib_qp * (*create_qp)(struct ib_pd *pd, |
e2773c06 RD |
1181 | struct ib_qp_init_attr *qp_init_attr, |
1182 | struct ib_udata *udata); | |
1da177e4 LT |
1183 | int (*modify_qp)(struct ib_qp *qp, |
1184 | struct ib_qp_attr *qp_attr, | |
9bc57e2d RC |
1185 | int qp_attr_mask, |
1186 | struct ib_udata *udata); | |
1da177e4 LT |
1187 | int (*query_qp)(struct ib_qp *qp, |
1188 | struct ib_qp_attr *qp_attr, | |
1189 | int qp_attr_mask, | |
1190 | struct ib_qp_init_attr *qp_init_attr); | |
1191 | int (*destroy_qp)(struct ib_qp *qp); | |
1192 | int (*post_send)(struct ib_qp *qp, | |
1193 | struct ib_send_wr *send_wr, | |
1194 | struct ib_send_wr **bad_send_wr); | |
1195 | int (*post_recv)(struct ib_qp *qp, | |
1196 | struct ib_recv_wr *recv_wr, | |
1197 | struct ib_recv_wr **bad_recv_wr); | |
e2773c06 | 1198 | struct ib_cq * (*create_cq)(struct ib_device *device, int cqe, |
f4fd0b22 | 1199 | int comp_vector, |
e2773c06 RD |
1200 | struct ib_ucontext *context, |
1201 | struct ib_udata *udata); | |
2dd57162 EC |
1202 | int (*modify_cq)(struct ib_cq *cq, u16 cq_count, |
1203 | u16 cq_period); | |
1da177e4 | 1204 | int (*destroy_cq)(struct ib_cq *cq); |
33b9b3ee RD |
1205 | int (*resize_cq)(struct ib_cq *cq, int cqe, |
1206 | struct ib_udata *udata); | |
1da177e4 LT |
1207 | int (*poll_cq)(struct ib_cq *cq, int num_entries, |
1208 | struct ib_wc *wc); | |
1209 | int (*peek_cq)(struct ib_cq *cq, int wc_cnt); | |
1210 | int (*req_notify_cq)(struct ib_cq *cq, | |
ed23a727 | 1211 | enum ib_cq_notify_flags flags); |
1da177e4 LT |
1212 | int (*req_ncomp_notif)(struct ib_cq *cq, |
1213 | int wc_cnt); | |
1214 | struct ib_mr * (*get_dma_mr)(struct ib_pd *pd, | |
1215 | int mr_access_flags); | |
1216 | struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd, | |
1217 | struct ib_phys_buf *phys_buf_array, | |
1218 | int num_phys_buf, | |
1219 | int mr_access_flags, | |
1220 | u64 *iova_start); | |
e2773c06 | 1221 | struct ib_mr * (*reg_user_mr)(struct ib_pd *pd, |
f7c6a7b5 RD |
1222 | u64 start, u64 length, |
1223 | u64 virt_addr, | |
e2773c06 RD |
1224 | int mr_access_flags, |
1225 | struct ib_udata *udata); | |
1da177e4 LT |
1226 | int (*query_mr)(struct ib_mr *mr, |
1227 | struct ib_mr_attr *mr_attr); | |
1228 | int (*dereg_mr)(struct ib_mr *mr); | |
00f7ec36 SW |
1229 | struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd, |
1230 | int max_page_list_len); | |
1231 | struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device, | |
1232 | int page_list_len); | |
1233 | void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list); | |
1da177e4 LT |
1234 | int (*rereg_phys_mr)(struct ib_mr *mr, |
1235 | int mr_rereg_mask, | |
1236 | struct ib_pd *pd, | |
1237 | struct ib_phys_buf *phys_buf_array, | |
1238 | int num_phys_buf, | |
1239 | int mr_access_flags, | |
1240 | u64 *iova_start); | |
7083e42e SM |
1241 | struct ib_mw * (*alloc_mw)(struct ib_pd *pd, |
1242 | enum ib_mw_type type); | |
1da177e4 LT |
1243 | int (*bind_mw)(struct ib_qp *qp, |
1244 | struct ib_mw *mw, | |
1245 | struct ib_mw_bind *mw_bind); | |
1246 | int (*dealloc_mw)(struct ib_mw *mw); | |
1247 | struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd, | |
1248 | int mr_access_flags, | |
1249 | struct ib_fmr_attr *fmr_attr); | |
1250 | int (*map_phys_fmr)(struct ib_fmr *fmr, | |
1251 | u64 *page_list, int list_len, | |
1252 | u64 iova); | |
1253 | int (*unmap_fmr)(struct list_head *fmr_list); | |
1254 | int (*dealloc_fmr)(struct ib_fmr *fmr); | |
1255 | int (*attach_mcast)(struct ib_qp *qp, | |
1256 | union ib_gid *gid, | |
1257 | u16 lid); | |
1258 | int (*detach_mcast)(struct ib_qp *qp, | |
1259 | union ib_gid *gid, | |
1260 | u16 lid); | |
1261 | int (*process_mad)(struct ib_device *device, | |
1262 | int process_mad_flags, | |
1263 | u8 port_num, | |
1264 | struct ib_wc *in_wc, | |
1265 | struct ib_grh *in_grh, | |
1266 | struct ib_mad *in_mad, | |
1267 | struct ib_mad *out_mad); | |
59991f94 SH |
1268 | struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device, |
1269 | struct ib_ucontext *ucontext, | |
1270 | struct ib_udata *udata); | |
1271 | int (*dealloc_xrcd)(struct ib_xrcd *xrcd); | |
1da177e4 | 1272 | |
9b513090 RC |
1273 | struct ib_dma_mapping_ops *dma_ops; |
1274 | ||
e2773c06 | 1275 | struct module *owner; |
f4e91eb4 | 1276 | struct device dev; |
35be0681 | 1277 | struct kobject *ports_parent; |
1da177e4 LT |
1278 | struct list_head port_list; |
1279 | ||
1280 | enum { | |
1281 | IB_DEV_UNINITIALIZED, | |
1282 | IB_DEV_REGISTERED, | |
1283 | IB_DEV_UNREGISTERED | |
1284 | } reg_state; | |
1285 | ||
274c0891 | 1286 | int uverbs_abi_ver; |
17a55f79 | 1287 | u64 uverbs_cmd_mask; |
274c0891 | 1288 | |
c5bcbbb9 | 1289 | char node_desc[64]; |
cf311cd4 | 1290 | __be64 node_guid; |
96f15c03 | 1291 | u32 local_dma_lkey; |
1da177e4 LT |
1292 | u8 node_type; |
1293 | u8 phys_port_cnt; | |
1294 | }; | |
1295 | ||
1296 | struct ib_client { | |
1297 | char *name; | |
1298 | void (*add) (struct ib_device *); | |
1299 | void (*remove)(struct ib_device *); | |
1300 | ||
1301 | struct list_head list; | |
1302 | }; | |
1303 | ||
1304 | struct ib_device *ib_alloc_device(size_t size); | |
1305 | void ib_dealloc_device(struct ib_device *device); | |
1306 | ||
9a6edb60 RC |
1307 | int ib_register_device(struct ib_device *device, |
1308 | int (*port_callback)(struct ib_device *, | |
1309 | u8, struct kobject *)); | |
1da177e4 LT |
1310 | void ib_unregister_device(struct ib_device *device); |
1311 | ||
1312 | int ib_register_client (struct ib_client *client); | |
1313 | void ib_unregister_client(struct ib_client *client); | |
1314 | ||
1315 | void *ib_get_client_data(struct ib_device *device, struct ib_client *client); | |
1316 | void ib_set_client_data(struct ib_device *device, struct ib_client *client, | |
1317 | void *data); | |
1318 | ||
e2773c06 RD |
1319 | static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len) |
1320 | { | |
1321 | return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0; | |
1322 | } | |
1323 | ||
1324 | static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len) | |
1325 | { | |
1326 | return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0; | |
1327 | } | |
1328 | ||
8a51866f RD |
1329 | /** |
1330 | * ib_modify_qp_is_ok - Check that the supplied attribute mask | |
1331 | * contains all required attributes and no attributes not allowed for | |
1332 | * the given QP state transition. | |
1333 | * @cur_state: Current QP state | |
1334 | * @next_state: Next QP state | |
1335 | * @type: QP type | |
1336 | * @mask: Mask of supplied QP attributes | |
1337 | * | |
1338 | * This function is a helper function that a low-level driver's | |
1339 | * modify_qp method can use to validate the consumer's input. It | |
1340 | * checks that cur_state and next_state are valid QP states, that a | |
1341 | * transition from cur_state to next_state is allowed by the IB spec, | |
1342 | * and that the attribute mask supplied is allowed for the transition. | |
1343 | */ | |
1344 | int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state, | |
1345 | enum ib_qp_type type, enum ib_qp_attr_mask mask); | |
1346 | ||
1da177e4 LT |
1347 | int ib_register_event_handler (struct ib_event_handler *event_handler); |
1348 | int ib_unregister_event_handler(struct ib_event_handler *event_handler); | |
1349 | void ib_dispatch_event(struct ib_event *event); | |
1350 | ||
1351 | int ib_query_device(struct ib_device *device, | |
1352 | struct ib_device_attr *device_attr); | |
1353 | ||
1354 | int ib_query_port(struct ib_device *device, | |
1355 | u8 port_num, struct ib_port_attr *port_attr); | |
1356 | ||
a3f5adaf EC |
1357 | enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device, |
1358 | u8 port_num); | |
1359 | ||
1da177e4 LT |
1360 | int ib_query_gid(struct ib_device *device, |
1361 | u8 port_num, int index, union ib_gid *gid); | |
1362 | ||
1363 | int ib_query_pkey(struct ib_device *device, | |
1364 | u8 port_num, u16 index, u16 *pkey); | |
1365 | ||
1366 | int ib_modify_device(struct ib_device *device, | |
1367 | int device_modify_mask, | |
1368 | struct ib_device_modify *device_modify); | |
1369 | ||
1370 | int ib_modify_port(struct ib_device *device, | |
1371 | u8 port_num, int port_modify_mask, | |
1372 | struct ib_port_modify *port_modify); | |
1373 | ||
5eb620c8 YE |
1374 | int ib_find_gid(struct ib_device *device, union ib_gid *gid, |
1375 | u8 *port_num, u16 *index); | |
1376 | ||
1377 | int ib_find_pkey(struct ib_device *device, | |
1378 | u8 port_num, u16 pkey, u16 *index); | |
1379 | ||
1da177e4 LT |
1380 | /** |
1381 | * ib_alloc_pd - Allocates an unused protection domain. | |
1382 | * @device: The device on which to allocate the protection domain. | |
1383 | * | |
1384 | * A protection domain object provides an association between QPs, shared | |
1385 | * receive queues, address handles, memory regions, and memory windows. | |
1386 | */ | |
1387 | struct ib_pd *ib_alloc_pd(struct ib_device *device); | |
1388 | ||
1389 | /** | |
1390 | * ib_dealloc_pd - Deallocates a protection domain. | |
1391 | * @pd: The protection domain to deallocate. | |
1392 | */ | |
1393 | int ib_dealloc_pd(struct ib_pd *pd); | |
1394 | ||
1395 | /** | |
1396 | * ib_create_ah - Creates an address handle for the given address vector. | |
1397 | * @pd: The protection domain associated with the address handle. | |
1398 | * @ah_attr: The attributes of the address vector. | |
1399 | * | |
1400 | * The address handle is used to reference a local or global destination | |
1401 | * in all UD QP post sends. | |
1402 | */ | |
1403 | struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); | |
1404 | ||
4e00d694 SH |
1405 | /** |
1406 | * ib_init_ah_from_wc - Initializes address handle attributes from a | |
1407 | * work completion. | |
1408 | * @device: Device on which the received message arrived. | |
1409 | * @port_num: Port on which the received message arrived. | |
1410 | * @wc: Work completion associated with the received message. | |
1411 | * @grh: References the received global route header. This parameter is | |
1412 | * ignored unless the work completion indicates that the GRH is valid. | |
1413 | * @ah_attr: Returned attributes that can be used when creating an address | |
1414 | * handle for replying to the message. | |
1415 | */ | |
1416 | int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, | |
1417 | struct ib_grh *grh, struct ib_ah_attr *ah_attr); | |
1418 | ||
513789ed HR |
1419 | /** |
1420 | * ib_create_ah_from_wc - Creates an address handle associated with the | |
1421 | * sender of the specified work completion. | |
1422 | * @pd: The protection domain associated with the address handle. | |
1423 | * @wc: Work completion information associated with a received message. | |
1424 | * @grh: References the received global route header. This parameter is | |
1425 | * ignored unless the work completion indicates that the GRH is valid. | |
1426 | * @port_num: The outbound port number to associate with the address. | |
1427 | * | |
1428 | * The address handle is used to reference a local or global destination | |
1429 | * in all UD QP post sends. | |
1430 | */ | |
1431 | struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, | |
1432 | struct ib_grh *grh, u8 port_num); | |
1433 | ||
1da177e4 LT |
1434 | /** |
1435 | * ib_modify_ah - Modifies the address vector associated with an address | |
1436 | * handle. | |
1437 | * @ah: The address handle to modify. | |
1438 | * @ah_attr: The new address vector attributes to associate with the | |
1439 | * address handle. | |
1440 | */ | |
1441 | int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); | |
1442 | ||
1443 | /** | |
1444 | * ib_query_ah - Queries the address vector associated with an address | |
1445 | * handle. | |
1446 | * @ah: The address handle to query. | |
1447 | * @ah_attr: The address vector attributes associated with the address | |
1448 | * handle. | |
1449 | */ | |
1450 | int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr); | |
1451 | ||
1452 | /** | |
1453 | * ib_destroy_ah - Destroys an address handle. | |
1454 | * @ah: The address handle to destroy. | |
1455 | */ | |
1456 | int ib_destroy_ah(struct ib_ah *ah); | |
1457 | ||
d41fcc67 RD |
1458 | /** |
1459 | * ib_create_srq - Creates a SRQ associated with the specified protection | |
1460 | * domain. | |
1461 | * @pd: The protection domain associated with the SRQ. | |
abb6e9ba DB |
1462 | * @srq_init_attr: A list of initial attributes required to create the |
1463 | * SRQ. If SRQ creation succeeds, then the attributes are updated to | |
1464 | * the actual capabilities of the created SRQ. | |
d41fcc67 RD |
1465 | * |
1466 | * srq_attr->max_wr and srq_attr->max_sge are read the determine the | |
1467 | * requested size of the SRQ, and set to the actual values allocated | |
1468 | * on return. If ib_create_srq() succeeds, then max_wr and max_sge | |
1469 | * will always be at least as large as the requested values. | |
1470 | */ | |
1471 | struct ib_srq *ib_create_srq(struct ib_pd *pd, | |
1472 | struct ib_srq_init_attr *srq_init_attr); | |
1473 | ||
1474 | /** | |
1475 | * ib_modify_srq - Modifies the attributes for the specified SRQ. | |
1476 | * @srq: The SRQ to modify. | |
1477 | * @srq_attr: On input, specifies the SRQ attributes to modify. On output, | |
1478 | * the current values of selected SRQ attributes are returned. | |
1479 | * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ | |
1480 | * are being modified. | |
1481 | * | |
1482 | * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or | |
1483 | * IB_SRQ_LIMIT to set the SRQ's limit and request notification when | |
1484 | * the number of receives queued drops below the limit. | |
1485 | */ | |
1486 | int ib_modify_srq(struct ib_srq *srq, | |
1487 | struct ib_srq_attr *srq_attr, | |
1488 | enum ib_srq_attr_mask srq_attr_mask); | |
1489 | ||
1490 | /** | |
1491 | * ib_query_srq - Returns the attribute list and current values for the | |
1492 | * specified SRQ. | |
1493 | * @srq: The SRQ to query. | |
1494 | * @srq_attr: The attributes of the specified SRQ. | |
1495 | */ | |
1496 | int ib_query_srq(struct ib_srq *srq, | |
1497 | struct ib_srq_attr *srq_attr); | |
1498 | ||
1499 | /** | |
1500 | * ib_destroy_srq - Destroys the specified SRQ. | |
1501 | * @srq: The SRQ to destroy. | |
1502 | */ | |
1503 | int ib_destroy_srq(struct ib_srq *srq); | |
1504 | ||
1505 | /** | |
1506 | * ib_post_srq_recv - Posts a list of work requests to the specified SRQ. | |
1507 | * @srq: The SRQ to post the work request on. | |
1508 | * @recv_wr: A list of work requests to post on the receive queue. | |
1509 | * @bad_recv_wr: On an immediate failure, this parameter will reference | |
1510 | * the work request that failed to be posted on the QP. | |
1511 | */ | |
1512 | static inline int ib_post_srq_recv(struct ib_srq *srq, | |
1513 | struct ib_recv_wr *recv_wr, | |
1514 | struct ib_recv_wr **bad_recv_wr) | |
1515 | { | |
1516 | return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr); | |
1517 | } | |
1518 | ||
1da177e4 LT |
1519 | /** |
1520 | * ib_create_qp - Creates a QP associated with the specified protection | |
1521 | * domain. | |
1522 | * @pd: The protection domain associated with the QP. | |
abb6e9ba DB |
1523 | * @qp_init_attr: A list of initial attributes required to create the |
1524 | * QP. If QP creation succeeds, then the attributes are updated to | |
1525 | * the actual capabilities of the created QP. | |
1da177e4 LT |
1526 | */ |
1527 | struct ib_qp *ib_create_qp(struct ib_pd *pd, | |
1528 | struct ib_qp_init_attr *qp_init_attr); | |
1529 | ||
1530 | /** | |
1531 | * ib_modify_qp - Modifies the attributes for the specified QP and then | |
1532 | * transitions the QP to the given state. | |
1533 | * @qp: The QP to modify. | |
1534 | * @qp_attr: On input, specifies the QP attributes to modify. On output, | |
1535 | * the current values of selected QP attributes are returned. | |
1536 | * @qp_attr_mask: A bit-mask used to specify which attributes of the QP | |
1537 | * are being modified. | |
1538 | */ | |
1539 | int ib_modify_qp(struct ib_qp *qp, | |
1540 | struct ib_qp_attr *qp_attr, | |
1541 | int qp_attr_mask); | |
1542 | ||
1543 | /** | |
1544 | * ib_query_qp - Returns the attribute list and current values for the | |
1545 | * specified QP. | |
1546 | * @qp: The QP to query. | |
1547 | * @qp_attr: The attributes of the specified QP. | |
1548 | * @qp_attr_mask: A bit-mask used to select specific attributes to query. | |
1549 | * @qp_init_attr: Additional attributes of the selected QP. | |
1550 | * | |
1551 | * The qp_attr_mask may be used to limit the query to gathering only the | |
1552 | * selected attributes. | |
1553 | */ | |
1554 | int ib_query_qp(struct ib_qp *qp, | |
1555 | struct ib_qp_attr *qp_attr, | |
1556 | int qp_attr_mask, | |
1557 | struct ib_qp_init_attr *qp_init_attr); | |
1558 | ||
1559 | /** | |
1560 | * ib_destroy_qp - Destroys the specified QP. | |
1561 | * @qp: The QP to destroy. | |
1562 | */ | |
1563 | int ib_destroy_qp(struct ib_qp *qp); | |
1564 | ||
d3d72d90 | 1565 | /** |
0e0ec7e0 SH |
1566 | * ib_open_qp - Obtain a reference to an existing sharable QP. |
1567 | * @xrcd - XRC domain | |
1568 | * @qp_open_attr: Attributes identifying the QP to open. | |
1569 | * | |
1570 | * Returns a reference to a sharable QP. | |
1571 | */ | |
1572 | struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd, | |
1573 | struct ib_qp_open_attr *qp_open_attr); | |
1574 | ||
1575 | /** | |
1576 | * ib_close_qp - Release an external reference to a QP. | |
d3d72d90 SH |
1577 | * @qp: The QP handle to release |
1578 | * | |
0e0ec7e0 SH |
1579 | * The opened QP handle is released by the caller. The underlying |
1580 | * shared QP is not destroyed until all internal references are released. | |
d3d72d90 | 1581 | */ |
0e0ec7e0 | 1582 | int ib_close_qp(struct ib_qp *qp); |
d3d72d90 | 1583 | |
1da177e4 LT |
1584 | /** |
1585 | * ib_post_send - Posts a list of work requests to the send queue of | |
1586 | * the specified QP. | |
1587 | * @qp: The QP to post the work request on. | |
1588 | * @send_wr: A list of work requests to post on the send queue. | |
1589 | * @bad_send_wr: On an immediate failure, this parameter will reference | |
1590 | * the work request that failed to be posted on the QP. | |
55464d46 BVA |
1591 | * |
1592 | * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate | |
1593 | * error is returned, the QP state shall not be affected, | |
1594 | * ib_post_send() will return an immediate error after queueing any | |
1595 | * earlier work requests in the list. | |
1da177e4 LT |
1596 | */ |
1597 | static inline int ib_post_send(struct ib_qp *qp, | |
1598 | struct ib_send_wr *send_wr, | |
1599 | struct ib_send_wr **bad_send_wr) | |
1600 | { | |
1601 | return qp->device->post_send(qp, send_wr, bad_send_wr); | |
1602 | } | |
1603 | ||
1604 | /** | |
1605 | * ib_post_recv - Posts a list of work requests to the receive queue of | |
1606 | * the specified QP. | |
1607 | * @qp: The QP to post the work request on. | |
1608 | * @recv_wr: A list of work requests to post on the receive queue. | |
1609 | * @bad_recv_wr: On an immediate failure, this parameter will reference | |
1610 | * the work request that failed to be posted on the QP. | |
1611 | */ | |
1612 | static inline int ib_post_recv(struct ib_qp *qp, | |
1613 | struct ib_recv_wr *recv_wr, | |
1614 | struct ib_recv_wr **bad_recv_wr) | |
1615 | { | |
1616 | return qp->device->post_recv(qp, recv_wr, bad_recv_wr); | |
1617 | } | |
1618 | ||
1619 | /** | |
1620 | * ib_create_cq - Creates a CQ on the specified device. | |
1621 | * @device: The device on which to create the CQ. | |
1622 | * @comp_handler: A user-specified callback that is invoked when a | |
1623 | * completion event occurs on the CQ. | |
1624 | * @event_handler: A user-specified callback that is invoked when an | |
1625 | * asynchronous event not associated with a completion occurs on the CQ. | |
1626 | * @cq_context: Context associated with the CQ returned to the user via | |
1627 | * the associated completion and event handlers. | |
1628 | * @cqe: The minimum size of the CQ. | |
f4fd0b22 MT |
1629 | * @comp_vector - Completion vector used to signal completion events. |
1630 | * Must be >= 0 and < context->num_comp_vectors. | |
1da177e4 LT |
1631 | * |
1632 | * Users can examine the cq structure to determine the actual CQ size. | |
1633 | */ | |
1634 | struct ib_cq *ib_create_cq(struct ib_device *device, | |
1635 | ib_comp_handler comp_handler, | |
1636 | void (*event_handler)(struct ib_event *, void *), | |
f4fd0b22 | 1637 | void *cq_context, int cqe, int comp_vector); |
1da177e4 LT |
1638 | |
1639 | /** | |
1640 | * ib_resize_cq - Modifies the capacity of the CQ. | |
1641 | * @cq: The CQ to resize. | |
1642 | * @cqe: The minimum size of the CQ. | |
1643 | * | |
1644 | * Users can examine the cq structure to determine the actual CQ size. | |
1645 | */ | |
1646 | int ib_resize_cq(struct ib_cq *cq, int cqe); | |
1647 | ||
2dd57162 EC |
1648 | /** |
1649 | * ib_modify_cq - Modifies moderation params of the CQ | |
1650 | * @cq: The CQ to modify. | |
1651 | * @cq_count: number of CQEs that will trigger an event | |
1652 | * @cq_period: max period of time in usec before triggering an event | |
1653 | * | |
1654 | */ | |
1655 | int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period); | |
1656 | ||
1da177e4 LT |
1657 | /** |
1658 | * ib_destroy_cq - Destroys the specified CQ. | |
1659 | * @cq: The CQ to destroy. | |
1660 | */ | |
1661 | int ib_destroy_cq(struct ib_cq *cq); | |
1662 | ||
1663 | /** | |
1664 | * ib_poll_cq - poll a CQ for completion(s) | |
1665 | * @cq:the CQ being polled | |
1666 | * @num_entries:maximum number of completions to return | |
1667 | * @wc:array of at least @num_entries &struct ib_wc where completions | |
1668 | * will be returned | |
1669 | * | |
1670 | * Poll a CQ for (possibly multiple) completions. If the return value | |
1671 | * is < 0, an error occurred. If the return value is >= 0, it is the | |
1672 | * number of completions returned. If the return value is | |
1673 | * non-negative and < num_entries, then the CQ was emptied. | |
1674 | */ | |
1675 | static inline int ib_poll_cq(struct ib_cq *cq, int num_entries, | |
1676 | struct ib_wc *wc) | |
1677 | { | |
1678 | return cq->device->poll_cq(cq, num_entries, wc); | |
1679 | } | |
1680 | ||
1681 | /** | |
1682 | * ib_peek_cq - Returns the number of unreaped completions currently | |
1683 | * on the specified CQ. | |
1684 | * @cq: The CQ to peek. | |
1685 | * @wc_cnt: A minimum number of unreaped completions to check for. | |
1686 | * | |
1687 | * If the number of unreaped completions is greater than or equal to wc_cnt, | |
1688 | * this function returns wc_cnt, otherwise, it returns the actual number of | |
1689 | * unreaped completions. | |
1690 | */ | |
1691 | int ib_peek_cq(struct ib_cq *cq, int wc_cnt); | |
1692 | ||
1693 | /** | |
1694 | * ib_req_notify_cq - Request completion notification on a CQ. | |
1695 | * @cq: The CQ to generate an event for. | |
ed23a727 RD |
1696 | * @flags: |
1697 | * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP | |
1698 | * to request an event on the next solicited event or next work | |
1699 | * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS | |
1700 | * may also be |ed in to request a hint about missed events, as | |
1701 | * described below. | |
1702 | * | |
1703 | * Return Value: | |
1704 | * < 0 means an error occurred while requesting notification | |
1705 | * == 0 means notification was requested successfully, and if | |
1706 | * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events | |
1707 | * were missed and it is safe to wait for another event. In | |
1708 | * this case is it guaranteed that any work completions added | |
1709 | * to the CQ since the last CQ poll will trigger a completion | |
1710 | * notification event. | |
1711 | * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed | |
1712 | * in. It means that the consumer must poll the CQ again to | |
1713 | * make sure it is empty to avoid missing an event because of a | |
1714 | * race between requesting notification and an entry being | |
1715 | * added to the CQ. This return value means it is possible | |
1716 | * (but not guaranteed) that a work completion has been added | |
1717 | * to the CQ since the last poll without triggering a | |
1718 | * completion notification event. | |
1da177e4 LT |
1719 | */ |
1720 | static inline int ib_req_notify_cq(struct ib_cq *cq, | |
ed23a727 | 1721 | enum ib_cq_notify_flags flags) |
1da177e4 | 1722 | { |
ed23a727 | 1723 | return cq->device->req_notify_cq(cq, flags); |
1da177e4 LT |
1724 | } |
1725 | ||
1726 | /** | |
1727 | * ib_req_ncomp_notif - Request completion notification when there are | |
1728 | * at least the specified number of unreaped completions on the CQ. | |
1729 | * @cq: The CQ to generate an event for. | |
1730 | * @wc_cnt: The number of unreaped completions that should be on the | |
1731 | * CQ before an event is generated. | |
1732 | */ | |
1733 | static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt) | |
1734 | { | |
1735 | return cq->device->req_ncomp_notif ? | |
1736 | cq->device->req_ncomp_notif(cq, wc_cnt) : | |
1737 | -ENOSYS; | |
1738 | } | |
1739 | ||
1740 | /** | |
1741 | * ib_get_dma_mr - Returns a memory region for system memory that is | |
1742 | * usable for DMA. | |
1743 | * @pd: The protection domain associated with the memory region. | |
1744 | * @mr_access_flags: Specifies the memory access rights. | |
9b513090 RC |
1745 | * |
1746 | * Note that the ib_dma_*() functions defined below must be used | |
1747 | * to create/destroy addresses used with the Lkey or Rkey returned | |
1748 | * by ib_get_dma_mr(). | |
1da177e4 LT |
1749 | */ |
1750 | struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags); | |
1751 | ||
9b513090 RC |
1752 | /** |
1753 | * ib_dma_mapping_error - check a DMA addr for error | |
1754 | * @dev: The device for which the dma_addr was created | |
1755 | * @dma_addr: The DMA address to check | |
1756 | */ | |
1757 | static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr) | |
1758 | { | |
d1998ef3 BC |
1759 | if (dev->dma_ops) |
1760 | return dev->dma_ops->mapping_error(dev, dma_addr); | |
8d8bb39b | 1761 | return dma_mapping_error(dev->dma_device, dma_addr); |
9b513090 RC |
1762 | } |
1763 | ||
1764 | /** | |
1765 | * ib_dma_map_single - Map a kernel virtual address to DMA address | |
1766 | * @dev: The device for which the dma_addr is to be created | |
1767 | * @cpu_addr: The kernel virtual address | |
1768 | * @size: The size of the region in bytes | |
1769 | * @direction: The direction of the DMA | |
1770 | */ | |
1771 | static inline u64 ib_dma_map_single(struct ib_device *dev, | |
1772 | void *cpu_addr, size_t size, | |
1773 | enum dma_data_direction direction) | |
1774 | { | |
d1998ef3 BC |
1775 | if (dev->dma_ops) |
1776 | return dev->dma_ops->map_single(dev, cpu_addr, size, direction); | |
1777 | return dma_map_single(dev->dma_device, cpu_addr, size, direction); | |
9b513090 RC |
1778 | } |
1779 | ||
1780 | /** | |
1781 | * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single() | |
1782 | * @dev: The device for which the DMA address was created | |
1783 | * @addr: The DMA address | |
1784 | * @size: The size of the region in bytes | |
1785 | * @direction: The direction of the DMA | |
1786 | */ | |
1787 | static inline void ib_dma_unmap_single(struct ib_device *dev, | |
1788 | u64 addr, size_t size, | |
1789 | enum dma_data_direction direction) | |
1790 | { | |
d1998ef3 BC |
1791 | if (dev->dma_ops) |
1792 | dev->dma_ops->unmap_single(dev, addr, size, direction); | |
1793 | else | |
9b513090 RC |
1794 | dma_unmap_single(dev->dma_device, addr, size, direction); |
1795 | } | |
1796 | ||
cb9fbc5c AK |
1797 | static inline u64 ib_dma_map_single_attrs(struct ib_device *dev, |
1798 | void *cpu_addr, size_t size, | |
1799 | enum dma_data_direction direction, | |
1800 | struct dma_attrs *attrs) | |
1801 | { | |
1802 | return dma_map_single_attrs(dev->dma_device, cpu_addr, size, | |
1803 | direction, attrs); | |
1804 | } | |
1805 | ||
1806 | static inline void ib_dma_unmap_single_attrs(struct ib_device *dev, | |
1807 | u64 addr, size_t size, | |
1808 | enum dma_data_direction direction, | |
1809 | struct dma_attrs *attrs) | |
1810 | { | |
1811 | return dma_unmap_single_attrs(dev->dma_device, addr, size, | |
1812 | direction, attrs); | |
1813 | } | |
1814 | ||
9b513090 RC |
1815 | /** |
1816 | * ib_dma_map_page - Map a physical page to DMA address | |
1817 | * @dev: The device for which the dma_addr is to be created | |
1818 | * @page: The page to be mapped | |
1819 | * @offset: The offset within the page | |
1820 | * @size: The size of the region in bytes | |
1821 | * @direction: The direction of the DMA | |
1822 | */ | |
1823 | static inline u64 ib_dma_map_page(struct ib_device *dev, | |
1824 | struct page *page, | |
1825 | unsigned long offset, | |
1826 | size_t size, | |
1827 | enum dma_data_direction direction) | |
1828 | { | |
d1998ef3 BC |
1829 | if (dev->dma_ops) |
1830 | return dev->dma_ops->map_page(dev, page, offset, size, direction); | |
1831 | return dma_map_page(dev->dma_device, page, offset, size, direction); | |
9b513090 RC |
1832 | } |
1833 | ||
1834 | /** | |
1835 | * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page() | |
1836 | * @dev: The device for which the DMA address was created | |
1837 | * @addr: The DMA address | |
1838 | * @size: The size of the region in bytes | |
1839 | * @direction: The direction of the DMA | |
1840 | */ | |
1841 | static inline void ib_dma_unmap_page(struct ib_device *dev, | |
1842 | u64 addr, size_t size, | |
1843 | enum dma_data_direction direction) | |
1844 | { | |
d1998ef3 BC |
1845 | if (dev->dma_ops) |
1846 | dev->dma_ops->unmap_page(dev, addr, size, direction); | |
1847 | else | |
9b513090 RC |
1848 | dma_unmap_page(dev->dma_device, addr, size, direction); |
1849 | } | |
1850 | ||
1851 | /** | |
1852 | * ib_dma_map_sg - Map a scatter/gather list to DMA addresses | |
1853 | * @dev: The device for which the DMA addresses are to be created | |
1854 | * @sg: The array of scatter/gather entries | |
1855 | * @nents: The number of scatter/gather entries | |
1856 | * @direction: The direction of the DMA | |
1857 | */ | |
1858 | static inline int ib_dma_map_sg(struct ib_device *dev, | |
1859 | struct scatterlist *sg, int nents, | |
1860 | enum dma_data_direction direction) | |
1861 | { | |
d1998ef3 BC |
1862 | if (dev->dma_ops) |
1863 | return dev->dma_ops->map_sg(dev, sg, nents, direction); | |
1864 | return dma_map_sg(dev->dma_device, sg, nents, direction); | |
9b513090 RC |
1865 | } |
1866 | ||
1867 | /** | |
1868 | * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses | |
1869 | * @dev: The device for which the DMA addresses were created | |
1870 | * @sg: The array of scatter/gather entries | |
1871 | * @nents: The number of scatter/gather entries | |
1872 | * @direction: The direction of the DMA | |
1873 | */ | |
1874 | static inline void ib_dma_unmap_sg(struct ib_device *dev, | |
1875 | struct scatterlist *sg, int nents, | |
1876 | enum dma_data_direction direction) | |
1877 | { | |
d1998ef3 BC |
1878 | if (dev->dma_ops) |
1879 | dev->dma_ops->unmap_sg(dev, sg, nents, direction); | |
1880 | else | |
9b513090 RC |
1881 | dma_unmap_sg(dev->dma_device, sg, nents, direction); |
1882 | } | |
1883 | ||
cb9fbc5c AK |
1884 | static inline int ib_dma_map_sg_attrs(struct ib_device *dev, |
1885 | struct scatterlist *sg, int nents, | |
1886 | enum dma_data_direction direction, | |
1887 | struct dma_attrs *attrs) | |
1888 | { | |
1889 | return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs); | |
1890 | } | |
1891 | ||
1892 | static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev, | |
1893 | struct scatterlist *sg, int nents, | |
1894 | enum dma_data_direction direction, | |
1895 | struct dma_attrs *attrs) | |
1896 | { | |
1897 | dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs); | |
1898 | } | |
9b513090 RC |
1899 | /** |
1900 | * ib_sg_dma_address - Return the DMA address from a scatter/gather entry | |
1901 | * @dev: The device for which the DMA addresses were created | |
1902 | * @sg: The scatter/gather entry | |
1903 | */ | |
1904 | static inline u64 ib_sg_dma_address(struct ib_device *dev, | |
1905 | struct scatterlist *sg) | |
1906 | { | |
d1998ef3 BC |
1907 | if (dev->dma_ops) |
1908 | return dev->dma_ops->dma_address(dev, sg); | |
1909 | return sg_dma_address(sg); | |
9b513090 RC |
1910 | } |
1911 | ||
1912 | /** | |
1913 | * ib_sg_dma_len - Return the DMA length from a scatter/gather entry | |
1914 | * @dev: The device for which the DMA addresses were created | |
1915 | * @sg: The scatter/gather entry | |
1916 | */ | |
1917 | static inline unsigned int ib_sg_dma_len(struct ib_device *dev, | |
1918 | struct scatterlist *sg) | |
1919 | { | |
d1998ef3 BC |
1920 | if (dev->dma_ops) |
1921 | return dev->dma_ops->dma_len(dev, sg); | |
1922 | return sg_dma_len(sg); | |
9b513090 RC |
1923 | } |
1924 | ||
1925 | /** | |
1926 | * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU | |
1927 | * @dev: The device for which the DMA address was created | |
1928 | * @addr: The DMA address | |
1929 | * @size: The size of the region in bytes | |
1930 | * @dir: The direction of the DMA | |
1931 | */ | |
1932 | static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev, | |
1933 | u64 addr, | |
1934 | size_t size, | |
1935 | enum dma_data_direction dir) | |
1936 | { | |
d1998ef3 BC |
1937 | if (dev->dma_ops) |
1938 | dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir); | |
1939 | else | |
9b513090 RC |
1940 | dma_sync_single_for_cpu(dev->dma_device, addr, size, dir); |
1941 | } | |
1942 | ||
1943 | /** | |
1944 | * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device | |
1945 | * @dev: The device for which the DMA address was created | |
1946 | * @addr: The DMA address | |
1947 | * @size: The size of the region in bytes | |
1948 | * @dir: The direction of the DMA | |
1949 | */ | |
1950 | static inline void ib_dma_sync_single_for_device(struct ib_device *dev, | |
1951 | u64 addr, | |
1952 | size_t size, | |
1953 | enum dma_data_direction dir) | |
1954 | { | |
d1998ef3 BC |
1955 | if (dev->dma_ops) |
1956 | dev->dma_ops->sync_single_for_device(dev, addr, size, dir); | |
1957 | else | |
9b513090 RC |
1958 | dma_sync_single_for_device(dev->dma_device, addr, size, dir); |
1959 | } | |
1960 | ||
1961 | /** | |
1962 | * ib_dma_alloc_coherent - Allocate memory and map it for DMA | |
1963 | * @dev: The device for which the DMA address is requested | |
1964 | * @size: The size of the region to allocate in bytes | |
1965 | * @dma_handle: A pointer for returning the DMA address of the region | |
1966 | * @flag: memory allocator flags | |
1967 | */ | |
1968 | static inline void *ib_dma_alloc_coherent(struct ib_device *dev, | |
1969 | size_t size, | |
1970 | u64 *dma_handle, | |
1971 | gfp_t flag) | |
1972 | { | |
d1998ef3 BC |
1973 | if (dev->dma_ops) |
1974 | return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag); | |
c59a3da1 RD |
1975 | else { |
1976 | dma_addr_t handle; | |
1977 | void *ret; | |
1978 | ||
1979 | ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag); | |
1980 | *dma_handle = handle; | |
1981 | return ret; | |
1982 | } | |
9b513090 RC |
1983 | } |
1984 | ||
1985 | /** | |
1986 | * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent() | |
1987 | * @dev: The device for which the DMA addresses were allocated | |
1988 | * @size: The size of the region | |
1989 | * @cpu_addr: the address returned by ib_dma_alloc_coherent() | |
1990 | * @dma_handle: the DMA address returned by ib_dma_alloc_coherent() | |
1991 | */ | |
1992 | static inline void ib_dma_free_coherent(struct ib_device *dev, | |
1993 | size_t size, void *cpu_addr, | |
1994 | u64 dma_handle) | |
1995 | { | |
d1998ef3 BC |
1996 | if (dev->dma_ops) |
1997 | dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle); | |
1998 | else | |
9b513090 RC |
1999 | dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle); |
2000 | } | |
2001 | ||
1da177e4 LT |
2002 | /** |
2003 | * ib_reg_phys_mr - Prepares a virtually addressed memory region for use | |
2004 | * by an HCA. | |
2005 | * @pd: The protection domain associated assigned to the registered region. | |
2006 | * @phys_buf_array: Specifies a list of physical buffers to use in the | |
2007 | * memory region. | |
2008 | * @num_phys_buf: Specifies the size of the phys_buf_array. | |
2009 | * @mr_access_flags: Specifies the memory access rights. | |
2010 | * @iova_start: The offset of the region's starting I/O virtual address. | |
2011 | */ | |
2012 | struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd, | |
2013 | struct ib_phys_buf *phys_buf_array, | |
2014 | int num_phys_buf, | |
2015 | int mr_access_flags, | |
2016 | u64 *iova_start); | |
2017 | ||
2018 | /** | |
2019 | * ib_rereg_phys_mr - Modifies the attributes of an existing memory region. | |
2020 | * Conceptually, this call performs the functions deregister memory region | |
2021 | * followed by register physical memory region. Where possible, | |
2022 | * resources are reused instead of deallocated and reallocated. | |
2023 | * @mr: The memory region to modify. | |
2024 | * @mr_rereg_mask: A bit-mask used to indicate which of the following | |
2025 | * properties of the memory region are being modified. | |
2026 | * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies | |
2027 | * the new protection domain to associated with the memory region, | |
2028 | * otherwise, this parameter is ignored. | |
2029 | * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this | |
2030 | * field specifies a list of physical buffers to use in the new | |
2031 | * translation, otherwise, this parameter is ignored. | |
2032 | * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this | |
2033 | * field specifies the size of the phys_buf_array, otherwise, this | |
2034 | * parameter is ignored. | |
2035 | * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this | |
2036 | * field specifies the new memory access rights, otherwise, this | |
2037 | * parameter is ignored. | |
2038 | * @iova_start: The offset of the region's starting I/O virtual address. | |
2039 | */ | |
2040 | int ib_rereg_phys_mr(struct ib_mr *mr, | |
2041 | int mr_rereg_mask, | |
2042 | struct ib_pd *pd, | |
2043 | struct ib_phys_buf *phys_buf_array, | |
2044 | int num_phys_buf, | |
2045 | int mr_access_flags, | |
2046 | u64 *iova_start); | |
2047 | ||
2048 | /** | |
2049 | * ib_query_mr - Retrieves information about a specific memory region. | |
2050 | * @mr: The memory region to retrieve information about. | |
2051 | * @mr_attr: The attributes of the specified memory region. | |
2052 | */ | |
2053 | int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr); | |
2054 | ||
2055 | /** | |
2056 | * ib_dereg_mr - Deregisters a memory region and removes it from the | |
2057 | * HCA translation table. | |
2058 | * @mr: The memory region to deregister. | |
7083e42e SM |
2059 | * |
2060 | * This function can fail, if the memory region has memory windows bound to it. | |
1da177e4 LT |
2061 | */ |
2062 | int ib_dereg_mr(struct ib_mr *mr); | |
2063 | ||
00f7ec36 SW |
2064 | /** |
2065 | * ib_alloc_fast_reg_mr - Allocates memory region usable with the | |
2066 | * IB_WR_FAST_REG_MR send work request. | |
2067 | * @pd: The protection domain associated with the region. | |
2068 | * @max_page_list_len: requested max physical buffer list length to be | |
2069 | * used with fast register work requests for this MR. | |
2070 | */ | |
2071 | struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len); | |
2072 | ||
2073 | /** | |
2074 | * ib_alloc_fast_reg_page_list - Allocates a page list array | |
2075 | * @device - ib device pointer. | |
2076 | * @page_list_len - size of the page list array to be allocated. | |
2077 | * | |
2078 | * This allocates and returns a struct ib_fast_reg_page_list * and a | |
2079 | * page_list array that is at least page_list_len in size. The actual | |
2080 | * size is returned in max_page_list_len. The caller is responsible | |
2081 | * for initializing the contents of the page_list array before posting | |
2082 | * a send work request with the IB_WC_FAST_REG_MR opcode. | |
2083 | * | |
2084 | * The page_list array entries must be translated using one of the | |
2085 | * ib_dma_*() functions just like the addresses passed to | |
2086 | * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct | |
2087 | * ib_fast_reg_page_list must not be modified by the caller until the | |
2088 | * IB_WC_FAST_REG_MR work request completes. | |
2089 | */ | |
2090 | struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list( | |
2091 | struct ib_device *device, int page_list_len); | |
2092 | ||
2093 | /** | |
2094 | * ib_free_fast_reg_page_list - Deallocates a previously allocated | |
2095 | * page list array. | |
2096 | * @page_list - struct ib_fast_reg_page_list pointer to be deallocated. | |
2097 | */ | |
2098 | void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list); | |
2099 | ||
2100 | /** | |
2101 | * ib_update_fast_reg_key - updates the key portion of the fast_reg MR | |
2102 | * R_Key and L_Key. | |
2103 | * @mr - struct ib_mr pointer to be updated. | |
2104 | * @newkey - new key to be used. | |
2105 | */ | |
2106 | static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey) | |
2107 | { | |
2108 | mr->lkey = (mr->lkey & 0xffffff00) | newkey; | |
2109 | mr->rkey = (mr->rkey & 0xffffff00) | newkey; | |
2110 | } | |
2111 | ||
7083e42e SM |
2112 | /** |
2113 | * ib_inc_rkey - increments the key portion of the given rkey. Can be used | |
2114 | * for calculating a new rkey for type 2 memory windows. | |
2115 | * @rkey - the rkey to increment. | |
2116 | */ | |
2117 | static inline u32 ib_inc_rkey(u32 rkey) | |
2118 | { | |
2119 | const u32 mask = 0x000000ff; | |
2120 | return ((rkey + 1) & mask) | (rkey & ~mask); | |
2121 | } | |
2122 | ||
1da177e4 LT |
2123 | /** |
2124 | * ib_alloc_mw - Allocates a memory window. | |
2125 | * @pd: The protection domain associated with the memory window. | |
7083e42e | 2126 | * @type: The type of the memory window (1 or 2). |
1da177e4 | 2127 | */ |
7083e42e | 2128 | struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type); |
1da177e4 LT |
2129 | |
2130 | /** | |
2131 | * ib_bind_mw - Posts a work request to the send queue of the specified | |
2132 | * QP, which binds the memory window to the given address range and | |
2133 | * remote access attributes. | |
2134 | * @qp: QP to post the bind work request on. | |
2135 | * @mw: The memory window to bind. | |
2136 | * @mw_bind: Specifies information about the memory window, including | |
2137 | * its address range, remote access rights, and associated memory region. | |
7083e42e SM |
2138 | * |
2139 | * If there is no immediate error, the function will update the rkey member | |
2140 | * of the mw parameter to its new value. The bind operation can still fail | |
2141 | * asynchronously. | |
1da177e4 LT |
2142 | */ |
2143 | static inline int ib_bind_mw(struct ib_qp *qp, | |
2144 | struct ib_mw *mw, | |
2145 | struct ib_mw_bind *mw_bind) | |
2146 | { | |
2147 | /* XXX reference counting in corresponding MR? */ | |
2148 | return mw->device->bind_mw ? | |
2149 | mw->device->bind_mw(qp, mw, mw_bind) : | |
2150 | -ENOSYS; | |
2151 | } | |
2152 | ||
2153 | /** | |
2154 | * ib_dealloc_mw - Deallocates a memory window. | |
2155 | * @mw: The memory window to deallocate. | |
2156 | */ | |
2157 | int ib_dealloc_mw(struct ib_mw *mw); | |
2158 | ||
2159 | /** | |
2160 | * ib_alloc_fmr - Allocates a unmapped fast memory region. | |
2161 | * @pd: The protection domain associated with the unmapped region. | |
2162 | * @mr_access_flags: Specifies the memory access rights. | |
2163 | * @fmr_attr: Attributes of the unmapped region. | |
2164 | * | |
2165 | * A fast memory region must be mapped before it can be used as part of | |
2166 | * a work request. | |
2167 | */ | |
2168 | struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd, | |
2169 | int mr_access_flags, | |
2170 | struct ib_fmr_attr *fmr_attr); | |
2171 | ||
2172 | /** | |
2173 | * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region. | |
2174 | * @fmr: The fast memory region to associate with the pages. | |
2175 | * @page_list: An array of physical pages to map to the fast memory region. | |
2176 | * @list_len: The number of pages in page_list. | |
2177 | * @iova: The I/O virtual address to use with the mapped region. | |
2178 | */ | |
2179 | static inline int ib_map_phys_fmr(struct ib_fmr *fmr, | |
2180 | u64 *page_list, int list_len, | |
2181 | u64 iova) | |
2182 | { | |
2183 | return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova); | |
2184 | } | |
2185 | ||
2186 | /** | |
2187 | * ib_unmap_fmr - Removes the mapping from a list of fast memory regions. | |
2188 | * @fmr_list: A linked list of fast memory regions to unmap. | |
2189 | */ | |
2190 | int ib_unmap_fmr(struct list_head *fmr_list); | |
2191 | ||
2192 | /** | |
2193 | * ib_dealloc_fmr - Deallocates a fast memory region. | |
2194 | * @fmr: The fast memory region to deallocate. | |
2195 | */ | |
2196 | int ib_dealloc_fmr(struct ib_fmr *fmr); | |
2197 | ||
2198 | /** | |
2199 | * ib_attach_mcast - Attaches the specified QP to a multicast group. | |
2200 | * @qp: QP to attach to the multicast group. The QP must be type | |
2201 | * IB_QPT_UD. | |
2202 | * @gid: Multicast group GID. | |
2203 | * @lid: Multicast group LID in host byte order. | |
2204 | * | |
2205 | * In order to send and receive multicast packets, subnet | |
2206 | * administration must have created the multicast group and configured | |
2207 | * the fabric appropriately. The port associated with the specified | |
2208 | * QP must also be a member of the multicast group. | |
2209 | */ | |
2210 | int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); | |
2211 | ||
2212 | /** | |
2213 | * ib_detach_mcast - Detaches the specified QP from a multicast group. | |
2214 | * @qp: QP to detach from the multicast group. | |
2215 | * @gid: Multicast group GID. | |
2216 | * @lid: Multicast group LID in host byte order. | |
2217 | */ | |
2218 | int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid); | |
2219 | ||
59991f94 SH |
2220 | /** |
2221 | * ib_alloc_xrcd - Allocates an XRC domain. | |
2222 | * @device: The device on which to allocate the XRC domain. | |
2223 | */ | |
2224 | struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device); | |
2225 | ||
2226 | /** | |
2227 | * ib_dealloc_xrcd - Deallocates an XRC domain. | |
2228 | * @xrcd: The XRC domain to deallocate. | |
2229 | */ | |
2230 | int ib_dealloc_xrcd(struct ib_xrcd *xrcd); | |
2231 | ||
1da177e4 | 2232 | #endif /* IB_VERBS_H */ |