RDMA/ocrdma: Remove the MTU check based on Ethernet MTU
[deliverable/linux.git] / drivers / infiniband / hw / ocrdma / ocrdma.h
CommitLineData
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1/*******************************************************************
2 * This file is part of the Emulex RoCE Device Driver for *
3 * RoCE (RDMA over Converged Ethernet) adapters. *
4 * Copyright (C) 2008-2012 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *
20 * Contact Information:
21 * linux-drivers@emulex.com
22 *
23 * Emulex
24 * 3333 Susan Street
25 * Costa Mesa, CA 92626
26 *******************************************************************/
27
28#ifndef __OCRDMA_H__
29#define __OCRDMA_H__
30
31#include <linux/mutex.h>
32#include <linux/list.h>
33#include <linux/spinlock.h>
34#include <linux/pci.h>
35
36#include <rdma/ib_verbs.h>
37#include <rdma/ib_user_verbs.h>
38
39#include <be_roce.h>
40#include "ocrdma_sli.h"
41
42#define OCRDMA_ROCE_DEV_VERSION "1.0.0"
43#define OCRDMA_NODE_DESC "Emulex OneConnect RoCE HCA"
44
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45#define OCRDMA_MAX_AH 512
46
47#define OCRDMA_UVERBS(CMD_NAME) (1ull << IB_USER_VERBS_CMD_##CMD_NAME)
48
49struct ocrdma_dev_attr {
50 u8 fw_ver[32];
51 u32 vendor_id;
52 u32 device_id;
53 u16 max_pd;
54 u16 max_cq;
55 u16 max_cqe;
56 u16 max_qp;
57 u16 max_wqe;
58 u16 max_rqe;
7c33880c 59 u16 max_srq;
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60 u32 max_inline_data;
61 int max_send_sge;
62 int max_recv_sge;
634c5796 63 int max_srq_sge;
45e86b33 64 int max_rdma_sge;
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PP
65 int max_mr;
66 u64 max_mr_size;
67 u32 max_num_mr_pbl;
68 int max_fmr;
69 int max_map_per_fmr;
70 int max_pages_per_frmr;
71 u16 max_ord_per_qp;
72 u16 max_ird_per_qp;
73
74 int device_cap_flags;
75 u8 cq_overflow_detect;
76 u8 srq_supported;
77
78 u32 wqe_size;
79 u32 rqe_size;
80 u32 ird_page_size;
81 u8 local_ca_ack_delay;
82 u8 ird;
83 u8 num_ird_pages;
84};
85
86struct ocrdma_pbl {
87 void *va;
88 dma_addr_t pa;
89};
90
91struct ocrdma_queue_info {
92 void *va;
93 dma_addr_t dma;
94 u32 size;
95 u16 len;
96 u16 entry_size; /* Size of an element in the queue */
97 u16 id; /* qid, where to ring the doorbell. */
98 u16 head, tail;
99 bool created;
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100};
101
102struct ocrdma_eq {
103 struct ocrdma_queue_info q;
104 u32 vector;
105 int cq_cnt;
106 struct ocrdma_dev *dev;
107 char irq_name[32];
108};
109
110struct ocrdma_mq {
111 struct ocrdma_queue_info sq;
112 struct ocrdma_queue_info cq;
113 bool rearm_cq;
114};
115
116struct mqe_ctx {
117 struct mutex lock; /* for serializing mailbox commands on MQ */
118 wait_queue_head_t cmd_wait;
119 u32 tag;
120 u16 cqe_status;
121 u16 ext_status;
122 bool cmd_done;
123};
124
125struct ocrdma_dev {
126 struct ib_device ibdev;
127 struct ocrdma_dev_attr attr;
128
129 struct mutex dev_lock; /* provides syncronise access to device data */
130 spinlock_t flush_q_lock ____cacheline_aligned;
131
132 struct ocrdma_cq **cq_tbl;
133 struct ocrdma_qp **qp_tbl;
134
135 struct ocrdma_eq meq;
136 struct ocrdma_eq *qp_eq_tbl;
137 int eq_cnt;
138 u16 base_eqid;
139 u16 max_eq;
140
141 union ib_gid *sgid_tbl;
142 /* provided synchronization to sgid table for
143 * updating gid entries triggered by notifier.
144 */
145 spinlock_t sgid_lock;
146
147 int gsi_qp_created;
148 struct ocrdma_cq *gsi_sqcq;
149 struct ocrdma_cq *gsi_rqcq;
150
151 struct {
152 struct ocrdma_av *va;
153 dma_addr_t pa;
154 u32 size;
155 u32 num_ah;
156 /* provide synchronization for av
157 * entry allocations.
158 */
159 spinlock_t lock;
160 u32 ahid;
161 struct ocrdma_pbl pbl;
162 } av_tbl;
163
164 void *mbx_cmd;
165 struct ocrdma_mq mq;
166 struct mqe_ctx mqe_ctx;
167
168 struct be_dev_info nic_info;
169
170 struct list_head entry;
3e4d60a8 171 struct rcu_head rcu;
fe2caefc 172 int id;
7c33880c 173 u64 stag_arr[OCRDMA_MAX_STAG];
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174};
175
176struct ocrdma_cq {
177 struct ib_cq ibcq;
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178 struct ocrdma_cqe *va;
179 u32 phase;
180 u32 getp; /* pointer to pending wrs to
181 * return to stack, wrap arounds
182 * at max_hw_cqe
183 */
184 u32 max_hw_cqe;
185 bool phase_change;
186 bool armed, solicited;
187 bool arm_needed;
188
189 spinlock_t cq_lock ____cacheline_aligned; /* provide synchronization
190 * to cq polling
191 */
192 /* syncronizes cq completion handler invoked from multiple context */
193 spinlock_t comp_handler_lock ____cacheline_aligned;
194 u16 id;
195 u16 eqn;
196
197 struct ocrdma_ucontext *ucontext;
198 dma_addr_t pa;
199 u32 len;
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200
201 /* head of all qp's sq and rq for which cqes need to be flushed
202 * by the software.
203 */
204 struct list_head sq_head, rq_head;
205};
206
207struct ocrdma_pd {
208 struct ib_pd ibpd;
209 struct ocrdma_dev *dev;
210 struct ocrdma_ucontext *uctx;
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211 u32 id;
212 int num_dpp_qp;
213 u32 dpp_page;
214 bool dpp_enabled;
215};
216
217struct ocrdma_ah {
218 struct ib_ah ibah;
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219 struct ocrdma_av *av;
220 u16 sgid_index;
221 u32 id;
222};
223
224struct ocrdma_qp_hwq_info {
225 u8 *va; /* virtual address */
226 u32 max_sges;
227 u32 head, tail;
228 u32 entry_size;
229 u32 max_cnt;
230 u32 max_wqe_idx;
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231 u16 dbid; /* qid, where to ring the doorbell. */
232 u32 len;
233 dma_addr_t pa;
234};
235
236struct ocrdma_srq {
237 struct ib_srq ibsrq;
fe2caefc 238 u8 __iomem *db;
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239 struct ocrdma_qp_hwq_info rq;
240 u64 *rqe_wr_id_tbl;
241 u32 *idx_bit_fields;
242 u32 bit_fields_len;
243
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244 /* provide synchronization to multiple context(s) posting rqe */
245 spinlock_t q_lock ____cacheline_aligned;
246
fe2caefc 247 struct ocrdma_pd *pd;
fe2caefc 248 u32 id;
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249};
250
251struct ocrdma_qp {
252 struct ib_qp ibqp;
253 struct ocrdma_dev *dev;
254
255 u8 __iomem *sq_db;
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256 struct ocrdma_qp_hwq_info sq;
257 struct {
258 uint64_t wrid;
259 uint16_t dpp_wqe_idx;
260 uint16_t dpp_wqe;
261 uint8_t signaled;
262 uint8_t rsvd[3];
263 } *wqe_wr_id_tbl;
264 u32 max_inline_data;
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265
266 /* provide synchronization to multiple context(s) posting wqe, rqe */
267 spinlock_t q_lock ____cacheline_aligned;
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268 struct ocrdma_cq *sq_cq;
269 /* list maintained per CQ to flush SQ errors */
270 struct list_head sq_entry;
271
272 u8 __iomem *rq_db;
273 struct ocrdma_qp_hwq_info rq;
274 u64 *rqe_wr_id_tbl;
275 struct ocrdma_cq *rq_cq;
276 struct ocrdma_srq *srq;
277 /* list maintained per CQ to flush RQ errors */
278 struct list_head rq_entry;
279
280 enum ocrdma_qp_state state; /* QP state */
281 int cap_flags;
282 u32 max_ord, max_ird;
283
284 u32 id;
285 struct ocrdma_pd *pd;
286
287 enum ib_qp_type qp_type;
288
289 int sgid_idx;
290 u32 qkey;
291 bool dpp_enabled;
292 u8 *ird_q_va;
45e86b33 293 u16 db_cache;
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294};
295
fe2caefc 296struct ocrdma_hw_mr {
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297 u32 lkey;
298 u8 fr_mr;
299 u8 remote_atomic;
300 u8 remote_rd;
301 u8 remote_wr;
302 u8 local_rd;
303 u8 local_wr;
304 u8 mw_bind;
305 u8 rsvd;
306 u64 len;
307 struct ocrdma_pbl *pbl_table;
308 u32 num_pbls;
309 u32 num_pbes;
310 u32 pbl_size;
311 u32 pbe_size;
312 u64 fbo;
313 u64 va;
314};
315
316struct ocrdma_mr {
317 struct ib_mr ibmr;
318 struct ib_umem *umem;
319 struct ocrdma_hw_mr hwmr;
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320};
321
322struct ocrdma_ucontext {
323 struct ib_ucontext ibucontext;
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324
325 struct list_head mm_head;
326 struct mutex mm_list_lock; /* protects list entries of mm type */
327 struct {
328 u32 *va;
329 dma_addr_t pa;
330 u32 len;
331 } ah_tbl;
332};
333
334struct ocrdma_mm {
335 struct {
336 u64 phy_addr;
337 unsigned long len;
338 } key;
339 struct list_head entry;
340};
341
342static inline struct ocrdma_dev *get_ocrdma_dev(struct ib_device *ibdev)
343{
344 return container_of(ibdev, struct ocrdma_dev, ibdev);
345}
346
347static inline struct ocrdma_ucontext *get_ocrdma_ucontext(struct ib_ucontext
348 *ibucontext)
349{
350 return container_of(ibucontext, struct ocrdma_ucontext, ibucontext);
351}
352
353static inline struct ocrdma_pd *get_ocrdma_pd(struct ib_pd *ibpd)
354{
355 return container_of(ibpd, struct ocrdma_pd, ibpd);
356}
357
358static inline struct ocrdma_cq *get_ocrdma_cq(struct ib_cq *ibcq)
359{
360 return container_of(ibcq, struct ocrdma_cq, ibcq);
361}
362
363static inline struct ocrdma_qp *get_ocrdma_qp(struct ib_qp *ibqp)
364{
365 return container_of(ibqp, struct ocrdma_qp, ibqp);
366}
367
368static inline struct ocrdma_mr *get_ocrdma_mr(struct ib_mr *ibmr)
369{
370 return container_of(ibmr, struct ocrdma_mr, ibmr);
371}
372
373static inline struct ocrdma_ah *get_ocrdma_ah(struct ib_ah *ibah)
374{
375 return container_of(ibah, struct ocrdma_ah, ibah);
376}
377
378static inline struct ocrdma_srq *get_ocrdma_srq(struct ib_srq *ibsrq)
379{
380 return container_of(ibsrq, struct ocrdma_srq, ibsrq);
381}
382
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383
384static inline int ocrdma_get_num_posted_shift(struct ocrdma_qp *qp)
385{
386 return ((qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY &&
43a6b402 387 qp->id < 128) ? 24 : 16);
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388}
389
390static inline int is_cqe_valid(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe)
391{
392 int cqe_valid;
393 cqe_valid = le32_to_cpu(cqe->flags_status_srcqpn) & OCRDMA_CQE_VALID;
f99b1649 394 return (cqe_valid == cq->phase);
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395}
396
397static inline int is_cqe_for_sq(struct ocrdma_cqe *cqe)
398{
399 return (le32_to_cpu(cqe->flags_status_srcqpn) &
400 OCRDMA_CQE_QTYPE) ? 0 : 1;
401}
402
403static inline int is_cqe_invalidated(struct ocrdma_cqe *cqe)
404{
405 return (le32_to_cpu(cqe->flags_status_srcqpn) &
406 OCRDMA_CQE_INVALIDATE) ? 1 : 0;
407}
408
409static inline int is_cqe_imm(struct ocrdma_cqe *cqe)
410{
411 return (le32_to_cpu(cqe->flags_status_srcqpn) &
412 OCRDMA_CQE_IMM) ? 1 : 0;
413}
414
415static inline int is_cqe_wr_imm(struct ocrdma_cqe *cqe)
416{
417 return (le32_to_cpu(cqe->flags_status_srcqpn) &
418 OCRDMA_CQE_WRITE_IMM) ? 1 : 0;
419}
420
421
fe2caefc 422#endif
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