1 /*
2  * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
3  *
4  * This program is free software; you can redistribute it and/or
5  * modify it under the terms of EITHER the GNU General Public License
6  * version 2 as published by the Free Software Foundation or the BSD
7  * 2-Clause License. This program is distributed in the hope that it
8  * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
9  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
10  * See the GNU General Public License version 2 for more details at
11  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program available in the file COPYING in the main
15  * directory of this source tree.
16  *
17  * The BSD 2-Clause License
18  *
19  *     Redistribution and use in source and binary forms, with or
20  *     without modification, are permitted provided that the following
21  *     conditions are met:
22  *
23  *      - Redistributions of source code must retain the above
24  *        copyright notice, this list of conditions and the following
25  *        disclaimer.
26  *
27  *      - Redistributions in binary form must reproduce the above
28  *        copyright notice, this list of conditions and the following
29  *        disclaimer in the documentation and/or other materials
30  *        provided with the distribution.
31  *
32  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
35  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
36  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43  * OF THE POSSIBILITY OF SUCH DAMAGE.
44  */
45 
46 #ifndef __PVRDMA_VERBS_H__
47 #define __PVRDMA_VERBS_H__
48 
49 #include <linux/types.h>
50 
51 union pvrdma_gid {
52 	u8	raw[16];
53 	struct {
54 		__be64	subnet_prefix;
55 		__be64	interface_id;
56 	} global;
57 };
58 
59 enum pvrdma_link_layer {
60 	PVRDMA_LINK_LAYER_UNSPECIFIED,
61 	PVRDMA_LINK_LAYER_INFINIBAND,
62 	PVRDMA_LINK_LAYER_ETHERNET,
63 };
64 
65 enum pvrdma_mtu {
66 	PVRDMA_MTU_256  = 1,
67 	PVRDMA_MTU_512  = 2,
68 	PVRDMA_MTU_1024 = 3,
69 	PVRDMA_MTU_2048 = 4,
70 	PVRDMA_MTU_4096 = 5,
71 };
72 
73 static inline int pvrdma_mtu_enum_to_int(enum pvrdma_mtu mtu)
74 {
75 	switch (mtu) {
76 	case PVRDMA_MTU_256:	return  256;
77 	case PVRDMA_MTU_512:	return  512;
78 	case PVRDMA_MTU_1024:	return 1024;
79 	case PVRDMA_MTU_2048:	return 2048;
80 	case PVRDMA_MTU_4096:	return 4096;
81 	default:		return   -1;
82 	}
83 }
84 
85 static inline enum pvrdma_mtu pvrdma_mtu_int_to_enum(int mtu)
86 {
87 	switch (mtu) {
88 	case 256:	return PVRDMA_MTU_256;
89 	case 512:	return PVRDMA_MTU_512;
90 	case 1024:	return PVRDMA_MTU_1024;
91 	case 2048:	return PVRDMA_MTU_2048;
92 	case 4096:
93 	default:	return PVRDMA_MTU_4096;
94 	}
95 }
96 
97 enum pvrdma_port_state {
98 	PVRDMA_PORT_NOP			= 0,
99 	PVRDMA_PORT_DOWN		= 1,
100 	PVRDMA_PORT_INIT		= 2,
101 	PVRDMA_PORT_ARMED		= 3,
102 	PVRDMA_PORT_ACTIVE		= 4,
103 	PVRDMA_PORT_ACTIVE_DEFER	= 5,
104 };
105 
106 enum pvrdma_port_cap_flags {
107 	PVRDMA_PORT_SM				= 1 <<  1,
108 	PVRDMA_PORT_NOTICE_SUP			= 1 <<  2,
109 	PVRDMA_PORT_TRAP_SUP			= 1 <<  3,
110 	PVRDMA_PORT_OPT_IPD_SUP			= 1 <<  4,
111 	PVRDMA_PORT_AUTO_MIGR_SUP		= 1 <<  5,
112 	PVRDMA_PORT_SL_MAP_SUP			= 1 <<  6,
113 	PVRDMA_PORT_MKEY_NVRAM			= 1 <<  7,
114 	PVRDMA_PORT_PKEY_NVRAM			= 1 <<  8,
115 	PVRDMA_PORT_LED_INFO_SUP		= 1 <<  9,
116 	PVRDMA_PORT_SM_DISABLED			= 1 << 10,
117 	PVRDMA_PORT_SYS_IMAGE_GUID_SUP		= 1 << 11,
118 	PVRDMA_PORT_PKEY_SW_EXT_PORT_TRAP_SUP	= 1 << 12,
119 	PVRDMA_PORT_EXTENDED_SPEEDS_SUP		= 1 << 14,
120 	PVRDMA_PORT_CM_SUP			= 1 << 16,
121 	PVRDMA_PORT_SNMP_TUNNEL_SUP		= 1 << 17,
122 	PVRDMA_PORT_REINIT_SUP			= 1 << 18,
123 	PVRDMA_PORT_DEVICE_MGMT_SUP		= 1 << 19,
124 	PVRDMA_PORT_VENDOR_CLASS_SUP		= 1 << 20,
125 	PVRDMA_PORT_DR_NOTICE_SUP		= 1 << 21,
126 	PVRDMA_PORT_CAP_MASK_NOTICE_SUP		= 1 << 22,
127 	PVRDMA_PORT_BOOT_MGMT_SUP		= 1 << 23,
128 	PVRDMA_PORT_LINK_LATENCY_SUP		= 1 << 24,
129 	PVRDMA_PORT_CLIENT_REG_SUP		= 1 << 25,
130 	PVRDMA_PORT_IP_BASED_GIDS		= 1 << 26,
131 	PVRDMA_PORT_CAP_FLAGS_MAX		= PVRDMA_PORT_IP_BASED_GIDS,
132 };
133 
134 enum pvrdma_port_width {
135 	PVRDMA_WIDTH_1X		= 1,
136 	PVRDMA_WIDTH_4X		= 2,
137 	PVRDMA_WIDTH_8X		= 4,
138 	PVRDMA_WIDTH_12X	= 8,
139 };
140 
141 static inline int pvrdma_width_enum_to_int(enum pvrdma_port_width width)
142 {
143 	switch (width) {
144 	case PVRDMA_WIDTH_1X:	return  1;
145 	case PVRDMA_WIDTH_4X:	return  4;
146 	case PVRDMA_WIDTH_8X:	return  8;
147 	case PVRDMA_WIDTH_12X:	return 12;
148 	default:		return -1;
149 	}
150 }
151 
152 enum pvrdma_port_speed {
153 	PVRDMA_SPEED_SDR	= 1,
154 	PVRDMA_SPEED_DDR	= 2,
155 	PVRDMA_SPEED_QDR	= 4,
156 	PVRDMA_SPEED_FDR10	= 8,
157 	PVRDMA_SPEED_FDR	= 16,
158 	PVRDMA_SPEED_EDR	= 32,
159 };
160 
161 struct pvrdma_port_attr {
162 	enum pvrdma_port_state	state;
163 	enum pvrdma_mtu		max_mtu;
164 	enum pvrdma_mtu		active_mtu;
165 	u32			gid_tbl_len;
166 	u32			port_cap_flags;
167 	u32			max_msg_sz;
168 	u32			bad_pkey_cntr;
169 	u32			qkey_viol_cntr;
170 	u16			pkey_tbl_len;
171 	u16			lid;
172 	u16			sm_lid;
173 	u8			lmc;
174 	u8			max_vl_num;
175 	u8			sm_sl;
176 	u8			subnet_timeout;
177 	u8			init_type_reply;
178 	u8			active_width;
179 	u8			active_speed;
180 	u8			phys_state;
181 	u8			reserved[2];
182 };
183 
184 struct pvrdma_global_route {
185 	union pvrdma_gid	dgid;
186 	u32			flow_label;
187 	u8			sgid_index;
188 	u8			hop_limit;
189 	u8			traffic_class;
190 	u8			reserved;
191 };
192 
193 struct pvrdma_grh {
194 	__be32			version_tclass_flow;
195 	__be16			paylen;
196 	u8			next_hdr;
197 	u8			hop_limit;
198 	union pvrdma_gid	sgid;
199 	union pvrdma_gid	dgid;
200 };
201 
202 enum pvrdma_ah_flags {
203 	PVRDMA_AH_GRH = 1,
204 };
205 
206 enum pvrdma_rate {
207 	PVRDMA_RATE_PORT_CURRENT	= 0,
208 	PVRDMA_RATE_2_5_GBPS		= 2,
209 	PVRDMA_RATE_5_GBPS		= 5,
210 	PVRDMA_RATE_10_GBPS		= 3,
211 	PVRDMA_RATE_20_GBPS		= 6,
212 	PVRDMA_RATE_30_GBPS		= 4,
213 	PVRDMA_RATE_40_GBPS		= 7,
214 	PVRDMA_RATE_60_GBPS		= 8,
215 	PVRDMA_RATE_80_GBPS		= 9,
216 	PVRDMA_RATE_120_GBPS		= 10,
217 	PVRDMA_RATE_14_GBPS		= 11,
218 	PVRDMA_RATE_56_GBPS		= 12,
219 	PVRDMA_RATE_112_GBPS		= 13,
220 	PVRDMA_RATE_168_GBPS		= 14,
221 	PVRDMA_RATE_25_GBPS		= 15,
222 	PVRDMA_RATE_100_GBPS		= 16,
223 	PVRDMA_RATE_200_GBPS		= 17,
224 	PVRDMA_RATE_300_GBPS		= 18,
225 };
226 
227 struct pvrdma_ah_attr {
228 	struct pvrdma_global_route	grh;
229 	u16				dlid;
230 	u16				vlan_id;
231 	u8				sl;
232 	u8				src_path_bits;
233 	u8				static_rate;
234 	u8				ah_flags;
235 	u8				port_num;
236 	u8				dmac[6];
237 	u8				reserved;
238 };
239 
240 enum pvrdma_cq_notify_flags {
241 	PVRDMA_CQ_SOLICITED		= 1 << 0,
242 	PVRDMA_CQ_NEXT_COMP		= 1 << 1,
243 	PVRDMA_CQ_SOLICITED_MASK	= PVRDMA_CQ_SOLICITED |
244 					  PVRDMA_CQ_NEXT_COMP,
245 	PVRDMA_CQ_REPORT_MISSED_EVENTS	= 1 << 2,
246 };
247 
248 struct pvrdma_qp_cap {
249 	u32	max_send_wr;
250 	u32	max_recv_wr;
251 	u32	max_send_sge;
252 	u32	max_recv_sge;
253 	u32	max_inline_data;
254 	u32	reserved;
255 };
256 
257 enum pvrdma_sig_type {
258 	PVRDMA_SIGNAL_ALL_WR,
259 	PVRDMA_SIGNAL_REQ_WR,
260 };
261 
262 enum pvrdma_qp_type {
263 	PVRDMA_QPT_SMI,
264 	PVRDMA_QPT_GSI,
265 	PVRDMA_QPT_RC,
266 	PVRDMA_QPT_UC,
267 	PVRDMA_QPT_UD,
268 	PVRDMA_QPT_RAW_IPV6,
269 	PVRDMA_QPT_RAW_ETHERTYPE,
270 	PVRDMA_QPT_RAW_PACKET = 8,
271 	PVRDMA_QPT_XRC_INI = 9,
272 	PVRDMA_QPT_XRC_TGT,
273 	PVRDMA_QPT_MAX,
274 };
275 
276 enum pvrdma_qp_create_flags {
277 	PVRDMA_QP_CREATE_IPOPVRDMA_UD_LSO		= 1 << 0,
278 	PVRDMA_QP_CREATE_BLOCK_MULTICAST_LOOPBACK	= 1 << 1,
279 };
280 
281 enum pvrdma_qp_attr_mask {
282 	PVRDMA_QP_STATE			= 1 << 0,
283 	PVRDMA_QP_CUR_STATE		= 1 << 1,
284 	PVRDMA_QP_EN_SQD_ASYNC_NOTIFY	= 1 << 2,
285 	PVRDMA_QP_ACCESS_FLAGS		= 1 << 3,
286 	PVRDMA_QP_PKEY_INDEX		= 1 << 4,
287 	PVRDMA_QP_PORT			= 1 << 5,
288 	PVRDMA_QP_QKEY			= 1 << 6,
289 	PVRDMA_QP_AV			= 1 << 7,
290 	PVRDMA_QP_PATH_MTU		= 1 << 8,
291 	PVRDMA_QP_TIMEOUT		= 1 << 9,
292 	PVRDMA_QP_RETRY_CNT		= 1 << 10,
293 	PVRDMA_QP_RNR_RETRY		= 1 << 11,
294 	PVRDMA_QP_RQ_PSN		= 1 << 12,
295 	PVRDMA_QP_MAX_QP_RD_ATOMIC	= 1 << 13,
296 	PVRDMA_QP_ALT_PATH		= 1 << 14,
297 	PVRDMA_QP_MIN_RNR_TIMER		= 1 << 15,
298 	PVRDMA_QP_SQ_PSN		= 1 << 16,
299 	PVRDMA_QP_MAX_DEST_RD_ATOMIC	= 1 << 17,
300 	PVRDMA_QP_PATH_MIG_STATE	= 1 << 18,
301 	PVRDMA_QP_CAP			= 1 << 19,
302 	PVRDMA_QP_DEST_QPN		= 1 << 20,
303 	PVRDMA_QP_ATTR_MASK_MAX		= PVRDMA_QP_DEST_QPN,
304 };
305 
306 enum pvrdma_qp_state {
307 	PVRDMA_QPS_RESET,
308 	PVRDMA_QPS_INIT,
309 	PVRDMA_QPS_RTR,
310 	PVRDMA_QPS_RTS,
311 	PVRDMA_QPS_SQD,
312 	PVRDMA_QPS_SQE,
313 	PVRDMA_QPS_ERR,
314 };
315 
316 enum pvrdma_mig_state {
317 	PVRDMA_MIG_MIGRATED,
318 	PVRDMA_MIG_REARM,
319 	PVRDMA_MIG_ARMED,
320 };
321 
322 enum pvrdma_mw_type {
323 	PVRDMA_MW_TYPE_1 = 1,
324 	PVRDMA_MW_TYPE_2 = 2,
325 };
326 
327 struct pvrdma_srq_attr {
328 	u32			max_wr;
329 	u32			max_sge;
330 	u32			srq_limit;
331 	u32			reserved;
332 };
333 
334 struct pvrdma_qp_attr {
335 	enum pvrdma_qp_state	qp_state;
336 	enum pvrdma_qp_state	cur_qp_state;
337 	enum pvrdma_mtu		path_mtu;
338 	enum pvrdma_mig_state	path_mig_state;
339 	u32			qkey;
340 	u32			rq_psn;
341 	u32			sq_psn;
342 	u32			dest_qp_num;
343 	u32			qp_access_flags;
344 	u16			pkey_index;
345 	u16			alt_pkey_index;
346 	u8			en_sqd_async_notify;
347 	u8			sq_draining;
348 	u8			max_rd_atomic;
349 	u8			max_dest_rd_atomic;
350 	u8			min_rnr_timer;
351 	u8			port_num;
352 	u8			timeout;
353 	u8			retry_cnt;
354 	u8			rnr_retry;
355 	u8			alt_port_num;
356 	u8			alt_timeout;
357 	u8			reserved[5];
358 	struct pvrdma_qp_cap	cap;
359 	struct pvrdma_ah_attr	ah_attr;
360 	struct pvrdma_ah_attr	alt_ah_attr;
361 };
362 
363 enum pvrdma_send_flags {
364 	PVRDMA_SEND_FENCE	= 1 << 0,
365 	PVRDMA_SEND_SIGNALED	= 1 << 1,
366 	PVRDMA_SEND_SOLICITED	= 1 << 2,
367 	PVRDMA_SEND_INLINE	= 1 << 3,
368 	PVRDMA_SEND_IP_CSUM	= 1 << 4,
369 	PVRDMA_SEND_FLAGS_MAX	= PVRDMA_SEND_IP_CSUM,
370 };
371 
372 enum pvrdma_access_flags {
373 	PVRDMA_ACCESS_LOCAL_WRITE	= 1 << 0,
374 	PVRDMA_ACCESS_REMOTE_WRITE	= 1 << 1,
375 	PVRDMA_ACCESS_REMOTE_READ	= 1 << 2,
376 	PVRDMA_ACCESS_REMOTE_ATOMIC	= 1 << 3,
377 	PVRDMA_ACCESS_MW_BIND		= 1 << 4,
378 	PVRDMA_ZERO_BASED		= 1 << 5,
379 	PVRDMA_ACCESS_ON_DEMAND		= 1 << 6,
380 	PVRDMA_ACCESS_FLAGS_MAX		= PVRDMA_ACCESS_ON_DEMAND,
381 };
382 
383 int pvrdma_query_device(struct ib_device *ibdev,
384 			struct ib_device_attr *props,
385 			struct ib_udata *udata);
386 int pvrdma_query_port(struct ib_device *ibdev, u8 port,
387 		      struct ib_port_attr *props);
388 int pvrdma_query_gid(struct ib_device *ibdev, u8 port,
389 		     int index, union ib_gid *gid);
390 int pvrdma_query_pkey(struct ib_device *ibdev, u8 port,
391 		      u16 index, u16 *pkey);
392 enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
393 					    u8 port);
394 int pvrdma_modify_device(struct ib_device *ibdev, int mask,
395 			 struct ib_device_modify *props);
396 int pvrdma_modify_port(struct ib_device *ibdev, u8 port,
397 		       int mask, struct ib_port_modify *props);
398 int pvrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
399 struct ib_ucontext *pvrdma_alloc_ucontext(struct ib_device *ibdev,
400 					  struct ib_udata *udata);
401 int pvrdma_dealloc_ucontext(struct ib_ucontext *context);
402 struct ib_pd *pvrdma_alloc_pd(struct ib_device *ibdev,
403 			      struct ib_ucontext *context,
404 			      struct ib_udata *udata);
405 int pvrdma_dealloc_pd(struct ib_pd *ibpd);
406 struct ib_mr *pvrdma_get_dma_mr(struct ib_pd *pd, int acc);
407 struct ib_mr *pvrdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
408 				 u64 virt_addr, int access_flags,
409 				 struct ib_udata *udata);
410 int pvrdma_dereg_mr(struct ib_mr *mr);
411 struct ib_mr *pvrdma_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
412 			      u32 max_num_sg);
413 int pvrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
414 		     int sg_nents, unsigned int *sg_offset);
415 struct ib_cq *pvrdma_create_cq(struct ib_device *ibdev,
416 			       const struct ib_cq_init_attr *attr,
417 			       struct ib_ucontext *context,
418 			       struct ib_udata *udata);
419 int pvrdma_destroy_cq(struct ib_cq *cq);
420 int pvrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
421 int pvrdma_req_notify_cq(struct ib_cq *cq, enum ib_cq_notify_flags flags);
422 struct ib_ah *pvrdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
423 			       u32 flags, struct ib_udata *udata);
424 int pvrdma_destroy_ah(struct ib_ah *ah);
425 
426 struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
427 				 struct ib_srq_init_attr *init_attr,
428 				 struct ib_udata *udata);
429 int pvrdma_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
430 		      enum ib_srq_attr_mask attr_mask, struct ib_udata *udata);
431 int pvrdma_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr);
432 int pvrdma_destroy_srq(struct ib_srq *srq);
433 
434 struct ib_qp *pvrdma_create_qp(struct ib_pd *pd,
435 			       struct ib_qp_init_attr *init_attr,
436 			       struct ib_udata *udata);
437 int pvrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
438 		     int attr_mask, struct ib_udata *udata);
439 int pvrdma_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
440 		    int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr);
441 int pvrdma_destroy_qp(struct ib_qp *qp);
442 int pvrdma_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
443 		     const struct ib_send_wr **bad_wr);
444 int pvrdma_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
445 		     const struct ib_recv_wr **bad_wr);
446 
447 #endif /* __PVRDMA_VERBS_H__ */
448