1 /*
2 * Broadcom NetXtreme-E RoCE driver.
3 *
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
6 *
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * BSD license below:
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 *
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
22 * distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 *
36 * Description: Fast Path Operators (header)
37 */
38
39 #ifndef __BNXT_QPLIB_FP_H__
40 #define __BNXT_QPLIB_FP_H__
41
42 #include <rdma/bnxt_re-abi.h>
43
44 /* Few helper structures temporarily defined here
45 * should get rid of these when roce_hsi.h is updated
46 * in original code base
47 */
48 struct sq_ud_ext_hdr {
49 __le32 dst_qp;
50 __le32 avid;
51 __le64 rsvd;
52 };
53
54 struct sq_raw_ext_hdr {
55 __le32 cfa_meta;
56 __le32 rsvd0;
57 __le64 rsvd1;
58 };
59
60 struct sq_rdma_ext_hdr {
61 __le64 remote_va;
62 __le32 remote_key;
63 __le32 rsvd;
64 };
65
66 struct sq_atomic_ext_hdr {
67 __le64 swap_data;
68 __le64 cmp_data;
69 };
70
71 struct sq_fr_pmr_ext_hdr {
72 __le64 pblptr;
73 __le64 va;
74 };
75
76 struct sq_bind_ext_hdr {
77 __le64 va;
78 __le32 length_lo;
79 __le32 length_hi;
80 };
81
82 struct rq_ext_hdr {
83 __le64 rsvd1;
84 __le64 rsvd2;
85 };
86
87 /* Helper structures end */
88
89 struct bnxt_qplib_srq {
90 struct bnxt_qplib_pd *pd;
91 struct bnxt_qplib_dpi *dpi;
92 struct bnxt_qplib_db_info dbinfo;
93 u64 srq_handle;
94 u32 id;
95 u16 wqe_size;
96 u32 max_wqe;
97 u32 max_sge;
98 u32 threshold;
99 bool arm_req;
100 struct bnxt_qplib_cq *cq;
101 struct bnxt_qplib_hwq hwq;
102 struct bnxt_qplib_swq *swq;
103 int start_idx;
104 int last_idx;
105 struct bnxt_qplib_sg_info sg_info;
106 u16 eventq_hw_ring_id;
107 spinlock_t lock; /* protect SRQE link list */
108 u8 toggle;
109 };
110
111 struct bnxt_qplib_sge {
112 u64 addr;
113 u32 lkey;
114 u32 size;
115 };
116
117 struct bnxt_qplib_swq {
118 u64 wr_id;
119 int next_idx;
120 u8 type;
121 u8 flags;
122 u32 start_psn;
123 u32 next_psn;
124 u32 slot_idx;
125 u8 slots;
126 struct sq_psn_search *psn_search;
127 struct sq_psn_search_ext *psn_ext;
128 };
129
130 struct bnxt_qplib_swqe {
131 /* General */
132 #define BNXT_QPLIB_FENCE_WRID 0x46454E43 /* "FENC" */
133 u64 wr_id;
134 u8 reqs_type;
135 u8 type;
136 #define BNXT_QPLIB_SWQE_TYPE_SEND 0
137 #define BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM 1
138 #define BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV 2
139 #define BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE 4
140 #define BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM 5
141 #define BNXT_QPLIB_SWQE_TYPE_RDMA_READ 6
142 #define BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP 8
143 #define BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD 11
144 #define BNXT_QPLIB_SWQE_TYPE_LOCAL_INV 12
145 #define BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR 13
146 #define BNXT_QPLIB_SWQE_TYPE_REG_MR 13
147 #define BNXT_QPLIB_SWQE_TYPE_BIND_MW 14
148 #define BNXT_QPLIB_SWQE_TYPE_RECV 128
149 #define BNXT_QPLIB_SWQE_TYPE_RECV_RDMA_IMM 129
150 u8 flags;
151 #define BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP BIT(0)
152 #define BNXT_QPLIB_SWQE_FLAGS_RD_ATOMIC_FENCE BIT(1)
153 #define BNXT_QPLIB_SWQE_FLAGS_UC_FENCE BIT(2)
154 #define BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT BIT(3)
155 #define BNXT_QPLIB_SWQE_FLAGS_INLINE BIT(4)
156 struct bnxt_qplib_sge sg_list[BNXT_VAR_MAX_SGE];
157 int num_sge;
158 /* Max inline data is 96 bytes */
159 u32 inline_len;
160 #define BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH 96
161 u8 inline_data[BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH];
162
163 union {
164 /* Send, with imm, inval key */
165 struct {
166 union {
167 u32 imm_data;
168 u32 inv_key;
169 };
170 u32 q_key;
171 u32 dst_qp;
172 u32 avid;
173 } send;
174
175 /* Send Raw Ethernet and QP1 */
176 struct {
177 u16 lflags;
178 u16 cfa_action;
179 u32 cfa_meta;
180 } rawqp1;
181
182 /* RDMA write, with imm, read */
183 struct {
184 union {
185 u32 imm_data;
186 u32 inv_key;
187 };
188 u64 remote_va;
189 u32 r_key;
190 } rdma;
191
192 /* Atomic cmp/swap, fetch/add */
193 struct {
194 u64 remote_va;
195 u32 r_key;
196 u64 swap_data;
197 u64 cmp_data;
198 } atomic;
199
200 /* Local Invalidate */
201 struct {
202 u32 inv_l_key;
203 } local_inv;
204
205 /* FR-PMR */
206 struct {
207 u8 access_cntl;
208 u8 pg_sz_log;
209 bool zero_based;
210 u32 l_key;
211 u32 length;
212 u8 pbl_pg_sz_log;
213 #define BNXT_QPLIB_SWQE_PAGE_SIZE_4K 0
214 #define BNXT_QPLIB_SWQE_PAGE_SIZE_8K 1
215 #define BNXT_QPLIB_SWQE_PAGE_SIZE_64K 4
216 #define BNXT_QPLIB_SWQE_PAGE_SIZE_256K 6
217 #define BNXT_QPLIB_SWQE_PAGE_SIZE_1M 8
218 #define BNXT_QPLIB_SWQE_PAGE_SIZE_2M 9
219 #define BNXT_QPLIB_SWQE_PAGE_SIZE_4M 10
220 #define BNXT_QPLIB_SWQE_PAGE_SIZE_1G 18
221 u8 levels;
222 #define PAGE_SHIFT_4K 12
223 __le64 *pbl_ptr;
224 dma_addr_t pbl_dma_ptr;
225 u64 *page_list;
226 u16 page_list_len;
227 u64 va;
228 } frmr;
229
230 /* Bind */
231 struct {
232 u8 access_cntl;
233 #define BNXT_QPLIB_BIND_SWQE_ACCESS_LOCAL_WRITE BIT(0)
234 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_READ BIT(1)
235 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_WRITE BIT(2)
236 #define BNXT_QPLIB_BIND_SWQE_ACCESS_REMOTE_ATOMIC BIT(3)
237 #define BNXT_QPLIB_BIND_SWQE_ACCESS_WINDOW_BIND BIT(4)
238 bool zero_based;
239 u8 mw_type;
240 u32 parent_l_key;
241 u32 r_key;
242 u64 va;
243 u32 length;
244 } bind;
245 };
246 };
247
248 struct bnxt_qplib_q {
249 struct bnxt_qplib_hwq hwq;
250 struct bnxt_qplib_swq *swq;
251 struct bnxt_qplib_db_info dbinfo;
252 struct bnxt_qplib_sg_info sg_info;
253 u32 max_wqe;
254 u32 max_sw_wqe;
255 u16 wqe_size;
256 u16 q_full_delta;
257 u16 max_sge;
258 u32 psn;
259 bool condition;
260 bool single;
261 bool send_phantom;
262 u32 phantom_wqe_cnt;
263 u32 phantom_cqe_cnt;
264 u32 next_cq_cons;
265 bool flushed;
266 u32 swq_start;
267 u32 swq_last;
268 };
269
270 struct bnxt_qplib_qp {
271 struct bnxt_qplib_pd *pd;
272 struct bnxt_qplib_dpi *dpi;
273 struct bnxt_qplib_chip_ctx *cctx;
274 u64 qp_handle;
275 #define BNXT_QPLIB_QP_ID_INVALID 0xFFFFFFFF
276 u32 id;
277 u8 type;
278 u8 sig_type;
279 u8 wqe_mode;
280 u8 state;
281 u8 cur_qp_state;
282 u64 modify_flags;
283 u32 max_inline_data;
284 u32 mtu;
285 u8 path_mtu;
286 bool en_sqd_async_notify;
287 u16 pkey_index;
288 u32 qkey;
289 u32 dest_qp_id;
290 u8 access;
291 u8 timeout;
292 u8 retry_cnt;
293 u8 rnr_retry;
294 u64 wqe_cnt;
295 u32 min_rnr_timer;
296 u32 max_rd_atomic;
297 u32 max_dest_rd_atomic;
298 u32 dest_qpn;
299 u8 smac[6];
300 u16 vlan_id;
301 u16 port_id;
302 u8 nw_type;
303 struct bnxt_qplib_ah ah;
304
305 #define BTH_PSN_MASK ((1 << 24) - 1)
306 /* SQ */
307 struct bnxt_qplib_q sq;
308 /* RQ */
309 struct bnxt_qplib_q rq;
310 /* SRQ */
311 struct bnxt_qplib_srq *srq;
312 /* CQ */
313 struct bnxt_qplib_cq *scq;
314 struct bnxt_qplib_cq *rcq;
315 /* IRRQ and ORRQ */
316 struct bnxt_qplib_hwq irrq;
317 struct bnxt_qplib_hwq orrq;
318 /* Header buffer for QP1 */
319 int sq_hdr_buf_size;
320 int rq_hdr_buf_size;
321 /*
322 * Buffer space for ETH(14), IP or GRH(40), UDP header(8)
323 * and ib_bth + ib_deth (20).
324 * Max required is 82 when RoCE V2 is enabled
325 */
326 #define BNXT_QPLIB_MAX_QP1_SQ_HDR_SIZE_V2 86
327 /* Ethernet header = 14 */
328 /* ib_grh = 40 (provided by MAD) */
329 /* ib_bth + ib_deth = 20 */
330 /* MAD = 256 (provided by MAD) */
331 /* iCRC = 4 */
332 #define BNXT_QPLIB_MAX_QP1_RQ_ETH_HDR_SIZE 14
333 #define BNXT_QPLIB_MAX_QP1_RQ_HDR_SIZE_V2 512
334 #define BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV4 20
335 #define BNXT_QPLIB_MAX_GRH_HDR_SIZE_IPV6 40
336 #define BNXT_QPLIB_MAX_QP1_RQ_BDETH_HDR_SIZE 20
337 void *sq_hdr_buf;
338 dma_addr_t sq_hdr_buf_map;
339 void *rq_hdr_buf;
340 dma_addr_t rq_hdr_buf_map;
341 struct list_head sq_flush;
342 struct list_head rq_flush;
343 u32 msn;
344 u32 msn_tbl_sz;
345 bool is_host_msn_tbl;
346 };
347
348 #define BNXT_QPLIB_MAX_CQE_ENTRY_SIZE sizeof(struct cq_base)
349
350 #define CQE_CNT_PER_PG (PAGE_SIZE / BNXT_QPLIB_MAX_CQE_ENTRY_SIZE)
351 #define CQE_MAX_IDX_PER_PG (CQE_CNT_PER_PG - 1)
352 #define CQE_PG(x) (((x) & ~CQE_MAX_IDX_PER_PG) / CQE_CNT_PER_PG)
353 #define CQE_IDX(x) ((x) & CQE_MAX_IDX_PER_PG)
354
355 #define ROCE_CQE_CMP_V 0
356 #define CQE_CMP_VALID(hdr, pass) \
357 (!!((hdr)->cqe_type_toggle & CQ_BASE_TOGGLE) == \
358 !((pass) & BNXT_QPLIB_FLAG_EPOCH_CONS_MASK))
359
__bnxt_qplib_get_avail(struct bnxt_qplib_hwq * hwq)360 static inline u32 __bnxt_qplib_get_avail(struct bnxt_qplib_hwq *hwq)
361 {
362 int cons, prod, avail;
363
364 cons = hwq->cons;
365 prod = hwq->prod;
366 avail = cons - prod;
367 if (cons <= prod)
368 avail += hwq->depth;
369 return avail;
370 }
371
bnxt_qplib_queue_full(struct bnxt_qplib_q * que,u8 slots)372 static inline bool bnxt_qplib_queue_full(struct bnxt_qplib_q *que,
373 u8 slots)
374 {
375 struct bnxt_qplib_hwq *hwq;
376 int avail;
377
378 hwq = &que->hwq;
379 /* False full is possible, retrying post-send makes sense */
380 avail = hwq->cons - hwq->prod;
381 if (hwq->cons <= hwq->prod)
382 avail += hwq->depth;
383 return avail <= slots;
384 }
385
386 struct bnxt_qplib_cqe {
387 u8 status;
388 u8 type;
389 u8 opcode;
390 u32 length;
391 u16 cfa_meta;
392 u64 wr_id;
393 union {
394 u32 immdata;
395 u32 invrkey;
396 };
397 u64 qp_handle;
398 u64 mr_handle;
399 u16 flags;
400 u8 smac[6];
401 u32 src_qp;
402 u16 raweth_qp1_flags;
403 u16 raweth_qp1_errors;
404 u16 raweth_qp1_cfa_code;
405 u32 raweth_qp1_flags2;
406 u32 raweth_qp1_metadata;
407 u8 raweth_qp1_payload_offset;
408 u16 pkey_index;
409 };
410
411 #define BNXT_QPLIB_QUEUE_START_PERIOD 0x01
412 struct bnxt_qplib_cq {
413 struct bnxt_qplib_dpi *dpi;
414 struct bnxt_qplib_db_info dbinfo;
415 u32 max_wqe;
416 u32 id;
417 u16 count;
418 u16 period;
419 struct bnxt_qplib_hwq hwq;
420 struct bnxt_qplib_hwq resize_hwq;
421 u32 cnq_hw_ring_id;
422 struct bnxt_qplib_nq *nq;
423 bool resize_in_progress;
424 struct bnxt_qplib_sg_info sg_info;
425 u64 cq_handle;
426 u8 toggle;
427
428 #define CQ_RESIZE_WAIT_TIME_MS 500
429 unsigned long flags;
430 #define CQ_FLAGS_RESIZE_IN_PROG 1
431 wait_queue_head_t waitq;
432 struct list_head sqf_head, rqf_head;
433 atomic_t arm_state;
434 spinlock_t compl_lock; /* synch CQ handlers */
435 /* Locking Notes:
436 * QP can move to error state from modify_qp, async error event or error
437 * CQE as part of poll_cq. When QP is moved to error state, it gets added
438 * to two flush lists, one each for SQ and RQ.
439 * Each flush list is protected by qplib_cq->flush_lock. Both scq and rcq
440 * flush_locks should be acquired when QP is moved to error. The control path
441 * operations(modify_qp and async error events) are synchronized with poll_cq
442 * using upper level CQ locks (bnxt_re_cq->cq_lock) of both SCQ and RCQ.
443 * The qplib_cq->flush_lock is required to synchronize two instances of poll_cq
444 * of the same QP while manipulating the flush list.
445 */
446 spinlock_t flush_lock; /* QP flush management */
447 u16 cnq_events;
448 };
449
450 #define BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE sizeof(struct xrrq_irrq)
451 #define BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE sizeof(struct xrrq_orrq)
452 #define IRD_LIMIT_TO_IRRQ_SLOTS(x) (2 * (x) + 2)
453 #define IRRQ_SLOTS_TO_IRD_LIMIT(s) (((s) >> 1) - 1)
454 #define ORD_LIMIT_TO_ORRQ_SLOTS(x) ((x) + 1)
455 #define ORRQ_SLOTS_TO_ORD_LIMIT(s) ((s) - 1)
456
457 #define BNXT_QPLIB_MAX_NQE_ENTRY_SIZE sizeof(struct nq_base)
458
459 #define NQE_CNT_PER_PG (PAGE_SIZE / BNXT_QPLIB_MAX_NQE_ENTRY_SIZE)
460 #define NQE_MAX_IDX_PER_PG (NQE_CNT_PER_PG - 1)
461 #define NQE_PG(x) (((x) & ~NQE_MAX_IDX_PER_PG) / NQE_CNT_PER_PG)
462 #define NQE_IDX(x) ((x) & NQE_MAX_IDX_PER_PG)
463
464 #define NQE_CMP_VALID(hdr, pass) \
465 (!!(le32_to_cpu((hdr)->info63_v[0]) & NQ_BASE_V) == \
466 !((pass) & BNXT_QPLIB_FLAG_EPOCH_CONS_MASK))
467
468 #define BNXT_QPLIB_NQE_MAX_CNT (128 * 1024)
469
470 #define NQ_CONS_PCI_BAR_REGION 2
471 #define NQ_DB_KEY_CP (0x2 << CMPL_DOORBELL_KEY_SFT)
472 #define NQ_DB_IDX_VALID CMPL_DOORBELL_IDX_VALID
473 #define NQ_DB_IRQ_DIS CMPL_DOORBELL_MASK
474 #define NQ_DB_CP_FLAGS_REARM (NQ_DB_KEY_CP | \
475 NQ_DB_IDX_VALID)
476 #define NQ_DB_CP_FLAGS (NQ_DB_KEY_CP | \
477 NQ_DB_IDX_VALID | \
478 NQ_DB_IRQ_DIS)
479
480 struct bnxt_qplib_nq_db {
481 struct bnxt_qplib_reg_desc reg;
482 struct bnxt_qplib_db_info dbinfo;
483 };
484
485 typedef int (*cqn_handler_t)(struct bnxt_qplib_nq *nq,
486 struct bnxt_qplib_cq *cq);
487 typedef int (*srqn_handler_t)(struct bnxt_qplib_nq *nq,
488 struct bnxt_qplib_srq *srq, u8 event);
489
490 struct bnxt_qplib_nq {
491 struct pci_dev *pdev;
492 struct bnxt_qplib_res *res;
493 char *name;
494 struct bnxt_qplib_hwq hwq;
495 struct bnxt_qplib_nq_db nq_db;
496 u16 ring_id;
497 int msix_vec;
498 cpumask_t mask;
499 struct tasklet_struct nq_tasklet;
500 bool requested;
501 int budget;
502
503 cqn_handler_t cqn_handler;
504 srqn_handler_t srqn_handler;
505 struct workqueue_struct *cqn_wq;
506 };
507
508 struct bnxt_qplib_nq_work {
509 struct work_struct work;
510 struct bnxt_qplib_nq *nq;
511 struct bnxt_qplib_cq *cq;
512 };
513
514 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill);
515 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq);
516 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
517 int msix_vector, bool need_init);
518 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
519 int nq_idx, int msix_vector, int bar_reg_offset,
520 cqn_handler_t cqn_handler,
521 srqn_handler_t srq_handler);
522 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
523 struct bnxt_qplib_srq *srq);
524 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
525 struct bnxt_qplib_srq *srq);
526 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
527 struct bnxt_qplib_srq *srq);
528 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
529 struct bnxt_qplib_swqe *wqe);
530 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
531 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
532 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
533 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
534 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp);
535 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp);
536 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
537 struct bnxt_qplib_qp *qp);
538 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
539 struct bnxt_qplib_sge *sge);
540 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
541 struct bnxt_qplib_sge *sge);
542 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp);
543 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp,
544 u32 index);
545 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp);
546 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
547 struct bnxt_qplib_swqe *wqe);
548 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp);
549 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
550 struct bnxt_qplib_swqe *wqe);
551 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq);
552 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
553 int new_cqes);
554 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
555 struct bnxt_qplib_cq *cq);
556 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq);
557 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
558 int num, struct bnxt_qplib_qp **qp);
559 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq);
560 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type);
561 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq);
562 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq);
563 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp);
564 void bnxt_qplib_acquire_cq_locks(struct bnxt_qplib_qp *qp,
565 unsigned long *flags);
566 void bnxt_qplib_release_cq_locks(struct bnxt_qplib_qp *qp,
567 unsigned long *flags);
568 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
569 struct bnxt_qplib_cqe *cqe,
570 int num_cqes);
571 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp);
572 void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq);
573
bnxt_qplib_get_swqe(struct bnxt_qplib_q * que,u32 * swq_idx)574 static inline void *bnxt_qplib_get_swqe(struct bnxt_qplib_q *que, u32 *swq_idx)
575 {
576 u32 idx;
577
578 idx = que->swq_start;
579 if (swq_idx)
580 *swq_idx = idx;
581 return &que->swq[idx];
582 }
583
bnxt_qplib_swq_mod_start(struct bnxt_qplib_q * que,u32 idx)584 static inline void bnxt_qplib_swq_mod_start(struct bnxt_qplib_q *que, u32 idx)
585 {
586 que->swq_start = que->swq[idx].next_idx;
587 }
588
bnxt_qplib_get_depth(struct bnxt_qplib_q * que,u8 wqe_mode,bool is_sq)589 static inline u32 bnxt_qplib_get_depth(struct bnxt_qplib_q *que, u8 wqe_mode, bool is_sq)
590 {
591 u32 slots;
592
593 /* Queue depth is the number of slots. */
594 slots = (que->wqe_size * que->max_wqe) / sizeof(struct sq_sge);
595 /* For variable WQE mode, need to align the slots to 256 */
596 if (wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE && is_sq)
597 slots = ALIGN(slots, BNXT_VAR_MAX_SLOT_ALIGN);
598 return slots;
599 }
600
bnxt_qplib_set_sq_size(struct bnxt_qplib_q * que,u8 wqe_mode)601 static inline u32 bnxt_qplib_set_sq_size(struct bnxt_qplib_q *que, u8 wqe_mode)
602 {
603 return (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
604 que->max_wqe : bnxt_qplib_get_depth(que, wqe_mode, true);
605 }
606
bnxt_qplib_set_sq_max_slot(u8 wqe_mode)607 static inline u32 bnxt_qplib_set_sq_max_slot(u8 wqe_mode)
608 {
609 return (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
610 sizeof(struct sq_send) / sizeof(struct sq_sge) : 1;
611 }
612
bnxt_qplib_set_rq_max_slot(u32 wqe_size)613 static inline u32 bnxt_qplib_set_rq_max_slot(u32 wqe_size)
614 {
615 return (wqe_size / sizeof(struct sq_sge));
616 }
617
__xlate_qfd(u16 delta,u16 wqe_bytes)618 static inline u16 __xlate_qfd(u16 delta, u16 wqe_bytes)
619 {
620 /* For Cu/Wh delta = 128, stride = 16, wqe_bytes = 128
621 * For Gen-p5 B/C mode delta = 0, stride = 16, wqe_bytes = 128.
622 * For Gen-p5 delta = 0, stride = 16, 32 <= wqe_bytes <= 512.
623 * when 8916 is disabled.
624 */
625 return (delta * wqe_bytes) / sizeof(struct sq_sge);
626 }
627
bnxt_qplib_calc_ilsize(struct bnxt_qplib_swqe * wqe,u16 max)628 static inline u16 bnxt_qplib_calc_ilsize(struct bnxt_qplib_swqe *wqe, u16 max)
629 {
630 u16 size = 0;
631 int indx;
632
633 for (indx = 0; indx < wqe->num_sge; indx++)
634 size += wqe->sg_list[indx].size;
635 if (size > max)
636 size = max;
637
638 return size;
639 }
640
641 /* MSN table update inlin */
bnxt_re_update_msn_tbl(u32 st_idx,u32 npsn,u32 start_psn)642 static inline __le64 bnxt_re_update_msn_tbl(u32 st_idx, u32 npsn, u32 start_psn)
643 {
644 return cpu_to_le64((((u64)(st_idx) << SQ_MSN_SEARCH_START_IDX_SFT) &
645 SQ_MSN_SEARCH_START_IDX_MASK) |
646 (((u64)(npsn) << SQ_MSN_SEARCH_NEXT_PSN_SFT) &
647 SQ_MSN_SEARCH_NEXT_PSN_MASK) |
648 (((start_psn) << SQ_MSN_SEARCH_START_PSN_SFT) &
649 SQ_MSN_SEARCH_START_PSN_MASK));
650 }
651
__is_var_wqe(struct bnxt_qplib_qp * qp)652 static inline bool __is_var_wqe(struct bnxt_qplib_qp *qp)
653 {
654 return (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE);
655 }
656
__is_err_cqe_for_var_wqe(struct bnxt_qplib_qp * qp,u8 status)657 static inline bool __is_err_cqe_for_var_wqe(struct bnxt_qplib_qp *qp, u8 status)
658 {
659 return (status != CQ_REQ_STATUS_OK) && __is_var_wqe(qp);
660 }
661 #endif /* __BNXT_QPLIB_FP_H__ */
662