1 /*
2 * Copyright (c) 2009-2010 Chelsio, Inc. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 * - Redistributions in binary form must reproduce the above
18 * copyright notice, this list of conditions and the following
19 * disclaimer in the documentation and/or other materials
20 * provided with the distribution.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
25 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
26 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
28 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 * SOFTWARE.
30 */
31 #ifndef __IW_CXGB4_H__
32 #define __IW_CXGB4_H__
33
34 #include <linux/mutex.h>
35 #include <linux/list.h>
36 #include <linux/spinlock.h>
37 #include <linux/xarray.h>
38 #include <linux/completion.h>
39 #include <linux/netdevice.h>
40 #include <linux/sched/mm.h>
41 #include <linux/pci.h>
42 #include <linux/dma-mapping.h>
43 #include <linux/inet.h>
44 #include <linux/wait.h>
45 #include <linux/kref.h>
46 #include <linux/timer.h>
47 #include <linux/io.h>
48 #include <linux/workqueue.h>
49
50 #include <asm/byteorder.h>
51
52 #include <net/net_namespace.h>
53
54 #include <rdma/ib_verbs.h>
55 #include <rdma/iw_cm.h>
56 #include <rdma/rdma_netlink.h>
57 #include <rdma/iw_portmap.h>
58 #include <rdma/restrack.h>
59
60 #include "cxgb4.h"
61 #include "cxgb4_uld.h"
62 #include "l2t.h"
63 #include <rdma/cxgb4-abi.h>
64
65 #define DRV_NAME "iw_cxgb4"
66 #define MOD DRV_NAME ":"
67
68 #ifdef pr_fmt
69 #undef pr_fmt
70 #endif
71
72 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
73
74 #include "t4.h"
75
76 #define PBL_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->pbl.start)
77 #define RQT_OFF(rdev_p, a) ((a) - (rdev_p)->lldi.vr->rq.start)
78
cplhdr(struct sk_buff * skb)79 static inline void *cplhdr(struct sk_buff *skb)
80 {
81 return skb->data;
82 }
83
84 #define C4IW_ID_TABLE_F_RANDOM 1 /* Pseudo-randomize the id's returned */
85 #define C4IW_ID_TABLE_F_EMPTY 2 /* Table is initially empty */
86
87 struct c4iw_id_table {
88 u32 flags;
89 u32 start; /* logical minimal id */
90 u32 last; /* hint for find */
91 u32 max;
92 spinlock_t lock;
93 unsigned long *table;
94 };
95
96 struct c4iw_resource {
97 struct c4iw_id_table tpt_table;
98 struct c4iw_id_table qid_table;
99 struct c4iw_id_table pdid_table;
100 struct c4iw_id_table srq_table;
101 };
102
103 struct c4iw_qid_list {
104 struct list_head entry;
105 u32 qid;
106 };
107
108 struct c4iw_dev_ucontext {
109 struct list_head qpids;
110 struct list_head cqids;
111 struct mutex lock;
112 struct kref kref;
113 };
114
115 enum c4iw_rdev_flags {
116 T4_FATAL_ERROR = (1<<0),
117 T4_STATUS_PAGE_DISABLED = (1<<1),
118 };
119
120 struct c4iw_stat {
121 u64 total;
122 u64 cur;
123 u64 max;
124 u64 fail;
125 };
126
127 struct c4iw_stats {
128 struct mutex lock;
129 struct c4iw_stat qid;
130 struct c4iw_stat pd;
131 struct c4iw_stat stag;
132 struct c4iw_stat pbl;
133 struct c4iw_stat rqt;
134 struct c4iw_stat srqt;
135 struct c4iw_stat srq;
136 struct c4iw_stat ocqp;
137 u64 db_full;
138 u64 db_empty;
139 u64 db_drop;
140 u64 db_state_transitions;
141 u64 db_fc_interruptions;
142 u64 tcam_full;
143 u64 act_ofld_conn_fails;
144 u64 pas_ofld_conn_fails;
145 u64 neg_adv;
146 };
147
148 struct c4iw_hw_queue {
149 int t4_eq_status_entries;
150 int t4_max_eq_size;
151 int t4_max_iq_size;
152 int t4_max_rq_size;
153 int t4_max_sq_size;
154 int t4_max_qp_depth;
155 int t4_max_cq_depth;
156 int t4_stat_len;
157 };
158
159 struct wr_log_entry {
160 ktime_t post_host_time;
161 ktime_t poll_host_time;
162 u64 post_sge_ts;
163 u64 cqe_sge_ts;
164 u64 poll_sge_ts;
165 u16 qid;
166 u16 wr_id;
167 u8 opcode;
168 u8 valid;
169 };
170
171 struct c4iw_rdev {
172 struct c4iw_resource resource;
173 u32 qpmask;
174 u32 cqmask;
175 struct c4iw_dev_ucontext uctx;
176 struct gen_pool *pbl_pool;
177 struct gen_pool *rqt_pool;
178 struct gen_pool *ocqp_pool;
179 u32 flags;
180 struct cxgb4_lld_info lldi;
181 unsigned long bar2_pa;
182 void __iomem *bar2_kva;
183 unsigned long oc_mw_pa;
184 void __iomem *oc_mw_kva;
185 struct c4iw_stats stats;
186 struct c4iw_hw_queue hw_queue;
187 struct t4_dev_status_page *status_page;
188 atomic_t wr_log_idx;
189 struct wr_log_entry *wr_log;
190 int wr_log_size;
191 struct workqueue_struct *free_workq;
192 struct completion rqt_compl;
193 struct completion pbl_compl;
194 struct kref rqt_kref;
195 struct kref pbl_kref;
196 };
197
c4iw_fatal_error(struct c4iw_rdev * rdev)198 static inline int c4iw_fatal_error(struct c4iw_rdev *rdev)
199 {
200 return rdev->flags & T4_FATAL_ERROR;
201 }
202
c4iw_num_stags(struct c4iw_rdev * rdev)203 static inline int c4iw_num_stags(struct c4iw_rdev *rdev)
204 {
205 return (int)(rdev->lldi.vr->stag.size >> 5);
206 }
207
208 #define C4IW_WR_TO (60*HZ)
209
210 struct c4iw_wr_wait {
211 struct completion completion;
212 int ret;
213 struct kref kref;
214 };
215
216 void _c4iw_free_wr_wait(struct kref *kref);
217
c4iw_put_wr_wait(struct c4iw_wr_wait * wr_waitp)218 static inline void c4iw_put_wr_wait(struct c4iw_wr_wait *wr_waitp)
219 {
220 pr_debug("wr_wait %p ref before put %u\n", wr_waitp,
221 kref_read(&wr_waitp->kref));
222 WARN_ON(kref_read(&wr_waitp->kref) == 0);
223 kref_put(&wr_waitp->kref, _c4iw_free_wr_wait);
224 }
225
c4iw_get_wr_wait(struct c4iw_wr_wait * wr_waitp)226 static inline void c4iw_get_wr_wait(struct c4iw_wr_wait *wr_waitp)
227 {
228 pr_debug("wr_wait %p ref before get %u\n", wr_waitp,
229 kref_read(&wr_waitp->kref));
230 WARN_ON(kref_read(&wr_waitp->kref) == 0);
231 kref_get(&wr_waitp->kref);
232 }
233
c4iw_init_wr_wait(struct c4iw_wr_wait * wr_waitp)234 static inline void c4iw_init_wr_wait(struct c4iw_wr_wait *wr_waitp)
235 {
236 wr_waitp->ret = 0;
237 init_completion(&wr_waitp->completion);
238 }
239
_c4iw_wake_up(struct c4iw_wr_wait * wr_waitp,int ret,bool deref)240 static inline void _c4iw_wake_up(struct c4iw_wr_wait *wr_waitp, int ret,
241 bool deref)
242 {
243 wr_waitp->ret = ret;
244 complete(&wr_waitp->completion);
245 if (deref)
246 c4iw_put_wr_wait(wr_waitp);
247 }
248
c4iw_wake_up_noref(struct c4iw_wr_wait * wr_waitp,int ret)249 static inline void c4iw_wake_up_noref(struct c4iw_wr_wait *wr_waitp, int ret)
250 {
251 _c4iw_wake_up(wr_waitp, ret, false);
252 }
253
c4iw_wake_up_deref(struct c4iw_wr_wait * wr_waitp,int ret)254 static inline void c4iw_wake_up_deref(struct c4iw_wr_wait *wr_waitp, int ret)
255 {
256 _c4iw_wake_up(wr_waitp, ret, true);
257 }
258
c4iw_wait_for_reply(struct c4iw_rdev * rdev,struct c4iw_wr_wait * wr_waitp,u32 hwtid,u32 qpid,const char * func)259 static inline int c4iw_wait_for_reply(struct c4iw_rdev *rdev,
260 struct c4iw_wr_wait *wr_waitp,
261 u32 hwtid, u32 qpid,
262 const char *func)
263 {
264 int ret;
265
266 if (c4iw_fatal_error(rdev)) {
267 wr_waitp->ret = -EIO;
268 goto out;
269 }
270
271 ret = wait_for_completion_timeout(&wr_waitp->completion, C4IW_WR_TO);
272 if (!ret) {
273 pr_err("%s - Device %s not responding (disabling device) - tid %u qpid %u\n",
274 func, pci_name(rdev->lldi.pdev), hwtid, qpid);
275 rdev->flags |= T4_FATAL_ERROR;
276 wr_waitp->ret = -EIO;
277 goto out;
278 }
279 if (wr_waitp->ret)
280 pr_debug("%s: FW reply %d tid %u qpid %u\n",
281 pci_name(rdev->lldi.pdev), wr_waitp->ret, hwtid, qpid);
282 out:
283 return wr_waitp->ret;
284 }
285
286 int c4iw_ofld_send(struct c4iw_rdev *rdev, struct sk_buff *skb);
287
c4iw_ref_send_wait(struct c4iw_rdev * rdev,struct sk_buff * skb,struct c4iw_wr_wait * wr_waitp,u32 hwtid,u32 qpid,const char * func)288 static inline int c4iw_ref_send_wait(struct c4iw_rdev *rdev,
289 struct sk_buff *skb,
290 struct c4iw_wr_wait *wr_waitp,
291 u32 hwtid, u32 qpid,
292 const char *func)
293 {
294 int ret;
295
296 pr_debug("%s wr_wait %p hwtid %u qpid %u\n", func, wr_waitp, hwtid,
297 qpid);
298 c4iw_get_wr_wait(wr_waitp);
299 ret = c4iw_ofld_send(rdev, skb);
300 if (ret) {
301 c4iw_put_wr_wait(wr_waitp);
302 return ret;
303 }
304 return c4iw_wait_for_reply(rdev, wr_waitp, hwtid, qpid, func);
305 }
306
307 enum db_state {
308 NORMAL = 0,
309 FLOW_CONTROL = 1,
310 RECOVERY = 2,
311 STOPPED = 3
312 };
313
314 struct c4iw_dev {
315 struct ib_device ibdev;
316 struct c4iw_rdev rdev;
317 u32 device_cap_flags;
318 struct xarray cqs;
319 struct xarray qps;
320 struct xarray mrs;
321 struct mutex db_mutex;
322 struct dentry *debugfs_root;
323 enum db_state db_state;
324 struct xarray hwtids;
325 struct xarray atids;
326 struct xarray stids;
327 struct list_head db_fc_list;
328 u32 avail_ird;
329 wait_queue_head_t wait;
330 };
331
332 struct uld_ctx {
333 struct list_head entry;
334 struct cxgb4_lld_info lldi;
335 struct c4iw_dev *dev;
336 struct work_struct reg_work;
337 };
338
to_c4iw_dev(struct ib_device * ibdev)339 static inline struct c4iw_dev *to_c4iw_dev(struct ib_device *ibdev)
340 {
341 return container_of(ibdev, struct c4iw_dev, ibdev);
342 }
343
rdev_to_c4iw_dev(struct c4iw_rdev * rdev)344 static inline struct c4iw_dev *rdev_to_c4iw_dev(struct c4iw_rdev *rdev)
345 {
346 return container_of(rdev, struct c4iw_dev, rdev);
347 }
348
get_chp(struct c4iw_dev * rhp,u32 cqid)349 static inline struct c4iw_cq *get_chp(struct c4iw_dev *rhp, u32 cqid)
350 {
351 return xa_load(&rhp->cqs, cqid);
352 }
353
get_qhp(struct c4iw_dev * rhp,u32 qpid)354 static inline struct c4iw_qp *get_qhp(struct c4iw_dev *rhp, u32 qpid)
355 {
356 return xa_load(&rhp->qps, qpid);
357 }
358
359 extern uint c4iw_max_read_depth;
360
cur_max_read_depth(struct c4iw_dev * dev)361 static inline int cur_max_read_depth(struct c4iw_dev *dev)
362 {
363 return min(dev->rdev.lldi.max_ordird_qp, c4iw_max_read_depth);
364 }
365
366 struct c4iw_pd {
367 struct ib_pd ibpd;
368 u32 pdid;
369 struct c4iw_dev *rhp;
370 };
371
to_c4iw_pd(struct ib_pd * ibpd)372 static inline struct c4iw_pd *to_c4iw_pd(struct ib_pd *ibpd)
373 {
374 return container_of(ibpd, struct c4iw_pd, ibpd);
375 }
376
377 struct tpt_attributes {
378 u64 len;
379 u64 va_fbo;
380 enum fw_ri_mem_perms perms;
381 u32 stag;
382 u32 pdid;
383 u32 qpid;
384 u32 pbl_addr;
385 u32 pbl_size;
386 u32 state:1;
387 u32 type:2;
388 u32 rsvd:1;
389 u32 remote_invaliate_disable:1;
390 u32 zbva:1;
391 u32 mw_bind_enable:1;
392 u32 page_size:5;
393 };
394
395 struct c4iw_mr {
396 struct ib_mr ibmr;
397 struct ib_umem *umem;
398 struct c4iw_dev *rhp;
399 struct sk_buff *dereg_skb;
400 u64 kva;
401 struct tpt_attributes attr;
402 u64 *mpl;
403 dma_addr_t mpl_addr;
404 u32 max_mpl_len;
405 u32 mpl_len;
406 struct c4iw_wr_wait *wr_waitp;
407 };
408
to_c4iw_mr(struct ib_mr * ibmr)409 static inline struct c4iw_mr *to_c4iw_mr(struct ib_mr *ibmr)
410 {
411 return container_of(ibmr, struct c4iw_mr, ibmr);
412 }
413
414 struct c4iw_mw {
415 struct ib_mw ibmw;
416 struct c4iw_dev *rhp;
417 struct sk_buff *dereg_skb;
418 u64 kva;
419 struct tpt_attributes attr;
420 struct c4iw_wr_wait *wr_waitp;
421 };
422
to_c4iw_mw(struct ib_mw * ibmw)423 static inline struct c4iw_mw *to_c4iw_mw(struct ib_mw *ibmw)
424 {
425 return container_of(ibmw, struct c4iw_mw, ibmw);
426 }
427
428 struct c4iw_cq {
429 struct ib_cq ibcq;
430 struct c4iw_dev *rhp;
431 struct sk_buff *destroy_skb;
432 struct t4_cq cq;
433 spinlock_t lock;
434 spinlock_t comp_handler_lock;
435 atomic_t refcnt;
436 wait_queue_head_t wait;
437 struct c4iw_wr_wait *wr_waitp;
438 };
439
to_c4iw_cq(struct ib_cq * ibcq)440 static inline struct c4iw_cq *to_c4iw_cq(struct ib_cq *ibcq)
441 {
442 return container_of(ibcq, struct c4iw_cq, ibcq);
443 }
444
445 struct c4iw_mpa_attributes {
446 u8 initiator;
447 u8 recv_marker_enabled;
448 u8 xmit_marker_enabled;
449 u8 crc_enabled;
450 u8 enhanced_rdma_conn;
451 u8 version;
452 u8 p2p_type;
453 };
454
455 struct c4iw_qp_attributes {
456 u32 scq;
457 u32 rcq;
458 u32 sq_num_entries;
459 u32 rq_num_entries;
460 u32 sq_max_sges;
461 u32 sq_max_sges_rdma_write;
462 u32 rq_max_sges;
463 u32 state;
464 u8 enable_rdma_read;
465 u8 enable_rdma_write;
466 u8 enable_bind;
467 u8 enable_mmid0_fastreg;
468 u32 max_ord;
469 u32 max_ird;
470 u32 pd;
471 u32 next_state;
472 char terminate_buffer[52];
473 u32 terminate_msg_len;
474 u8 is_terminate_local;
475 struct c4iw_mpa_attributes mpa_attr;
476 struct c4iw_ep *llp_stream_handle;
477 u8 layer_etype;
478 u8 ecode;
479 u16 sq_db_inc;
480 u16 rq_db_inc;
481 u8 send_term;
482 };
483
484 struct c4iw_qp {
485 struct ib_qp ibqp;
486 struct list_head db_fc_entry;
487 struct c4iw_dev *rhp;
488 struct c4iw_ep *ep;
489 struct c4iw_qp_attributes attr;
490 struct t4_wq wq;
491 spinlock_t lock;
492 struct mutex mutex;
493 wait_queue_head_t wait;
494 int sq_sig_all;
495 struct c4iw_srq *srq;
496 struct c4iw_ucontext *ucontext;
497 struct c4iw_wr_wait *wr_waitp;
498 struct completion qp_rel_comp;
499 refcount_t qp_refcnt;
500 };
501
to_c4iw_qp(struct ib_qp * ibqp)502 static inline struct c4iw_qp *to_c4iw_qp(struct ib_qp *ibqp)
503 {
504 return container_of(ibqp, struct c4iw_qp, ibqp);
505 }
506
507 struct c4iw_srq {
508 struct ib_srq ibsrq;
509 struct list_head db_fc_entry;
510 struct c4iw_dev *rhp;
511 struct t4_srq wq;
512 struct sk_buff *destroy_skb;
513 u32 srq_limit;
514 u32 pdid;
515 int idx;
516 u32 flags;
517 spinlock_t lock; /* protects srq */
518 struct c4iw_wr_wait *wr_waitp;
519 bool armed;
520 };
521
to_c4iw_srq(struct ib_srq * ibsrq)522 static inline struct c4iw_srq *to_c4iw_srq(struct ib_srq *ibsrq)
523 {
524 return container_of(ibsrq, struct c4iw_srq, ibsrq);
525 }
526
527 struct c4iw_ucontext {
528 struct ib_ucontext ibucontext;
529 struct c4iw_dev_ucontext uctx;
530 u32 key;
531 spinlock_t mmap_lock;
532 struct list_head mmaps;
533 bool is_32b_cqe;
534 };
535
to_c4iw_ucontext(struct ib_ucontext * c)536 static inline struct c4iw_ucontext *to_c4iw_ucontext(struct ib_ucontext *c)
537 {
538 return container_of(c, struct c4iw_ucontext, ibucontext);
539 }
540
541 struct c4iw_mm_entry {
542 struct list_head entry;
543 u64 addr;
544 u32 key;
545 unsigned len;
546 };
547
remove_mmap(struct c4iw_ucontext * ucontext,u32 key,unsigned len)548 static inline struct c4iw_mm_entry *remove_mmap(struct c4iw_ucontext *ucontext,
549 u32 key, unsigned len)
550 {
551 struct list_head *pos, *nxt;
552 struct c4iw_mm_entry *mm;
553
554 spin_lock(&ucontext->mmap_lock);
555 list_for_each_safe(pos, nxt, &ucontext->mmaps) {
556
557 mm = list_entry(pos, struct c4iw_mm_entry, entry);
558 if (mm->key == key && mm->len == len) {
559 list_del_init(&mm->entry);
560 spin_unlock(&ucontext->mmap_lock);
561 pr_debug("key 0x%x addr 0x%llx len %d\n", key,
562 (unsigned long long)mm->addr, mm->len);
563 return mm;
564 }
565 }
566 spin_unlock(&ucontext->mmap_lock);
567 return NULL;
568 }
569
insert_mmap(struct c4iw_ucontext * ucontext,struct c4iw_mm_entry * mm)570 static inline void insert_mmap(struct c4iw_ucontext *ucontext,
571 struct c4iw_mm_entry *mm)
572 {
573 spin_lock(&ucontext->mmap_lock);
574 pr_debug("key 0x%x addr 0x%llx len %d\n",
575 mm->key, (unsigned long long)mm->addr, mm->len);
576 list_add_tail(&mm->entry, &ucontext->mmaps);
577 spin_unlock(&ucontext->mmap_lock);
578 }
579
580 enum c4iw_qp_attr_mask {
581 C4IW_QP_ATTR_NEXT_STATE = 1 << 0,
582 C4IW_QP_ATTR_SQ_DB = 1<<1,
583 C4IW_QP_ATTR_RQ_DB = 1<<2,
584 C4IW_QP_ATTR_ENABLE_RDMA_READ = 1 << 7,
585 C4IW_QP_ATTR_ENABLE_RDMA_WRITE = 1 << 8,
586 C4IW_QP_ATTR_ENABLE_RDMA_BIND = 1 << 9,
587 C4IW_QP_ATTR_MAX_ORD = 1 << 11,
588 C4IW_QP_ATTR_MAX_IRD = 1 << 12,
589 C4IW_QP_ATTR_LLP_STREAM_HANDLE = 1 << 22,
590 C4IW_QP_ATTR_STREAM_MSG_BUFFER = 1 << 23,
591 C4IW_QP_ATTR_MPA_ATTR = 1 << 24,
592 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE = 1 << 25,
593 C4IW_QP_ATTR_VALID_MODIFY = (C4IW_QP_ATTR_ENABLE_RDMA_READ |
594 C4IW_QP_ATTR_ENABLE_RDMA_WRITE |
595 C4IW_QP_ATTR_MAX_ORD |
596 C4IW_QP_ATTR_MAX_IRD |
597 C4IW_QP_ATTR_LLP_STREAM_HANDLE |
598 C4IW_QP_ATTR_STREAM_MSG_BUFFER |
599 C4IW_QP_ATTR_MPA_ATTR |
600 C4IW_QP_ATTR_QP_CONTEXT_ACTIVATE)
601 };
602
603 int c4iw_modify_qp(struct c4iw_dev *rhp,
604 struct c4iw_qp *qhp,
605 enum c4iw_qp_attr_mask mask,
606 struct c4iw_qp_attributes *attrs,
607 int internal);
608
609 enum c4iw_qp_state {
610 C4IW_QP_STATE_IDLE,
611 C4IW_QP_STATE_RTS,
612 C4IW_QP_STATE_ERROR,
613 C4IW_QP_STATE_TERMINATE,
614 C4IW_QP_STATE_CLOSING,
615 C4IW_QP_STATE_TOT
616 };
617
c4iw_convert_state(enum ib_qp_state ib_state)618 static inline int c4iw_convert_state(enum ib_qp_state ib_state)
619 {
620 switch (ib_state) {
621 case IB_QPS_RESET:
622 case IB_QPS_INIT:
623 return C4IW_QP_STATE_IDLE;
624 case IB_QPS_RTS:
625 return C4IW_QP_STATE_RTS;
626 case IB_QPS_SQD:
627 return C4IW_QP_STATE_CLOSING;
628 case IB_QPS_SQE:
629 return C4IW_QP_STATE_TERMINATE;
630 case IB_QPS_ERR:
631 return C4IW_QP_STATE_ERROR;
632 default:
633 return -1;
634 }
635 }
636
to_ib_qp_state(int c4iw_qp_state)637 static inline int to_ib_qp_state(int c4iw_qp_state)
638 {
639 switch (c4iw_qp_state) {
640 case C4IW_QP_STATE_IDLE:
641 return IB_QPS_INIT;
642 case C4IW_QP_STATE_RTS:
643 return IB_QPS_RTS;
644 case C4IW_QP_STATE_CLOSING:
645 return IB_QPS_SQD;
646 case C4IW_QP_STATE_TERMINATE:
647 return IB_QPS_SQE;
648 case C4IW_QP_STATE_ERROR:
649 return IB_QPS_ERR;
650 }
651 return IB_QPS_ERR;
652 }
653
c4iw_ib_to_tpt_access(int a)654 static inline u32 c4iw_ib_to_tpt_access(int a)
655 {
656 return (a & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
657 (a & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0) |
658 (a & IB_ACCESS_LOCAL_WRITE ? FW_RI_MEM_ACCESS_LOCAL_WRITE : 0) |
659 FW_RI_MEM_ACCESS_LOCAL_READ;
660 }
661
c4iw_ib_to_tpt_bind_access(int acc)662 static inline u32 c4iw_ib_to_tpt_bind_access(int acc)
663 {
664 return (acc & IB_ACCESS_REMOTE_WRITE ? FW_RI_MEM_ACCESS_REM_WRITE : 0) |
665 (acc & IB_ACCESS_REMOTE_READ ? FW_RI_MEM_ACCESS_REM_READ : 0);
666 }
667
668 enum c4iw_mmid_state {
669 C4IW_STAG_STATE_VALID,
670 C4IW_STAG_STATE_INVALID
671 };
672
673 #define C4IW_NODE_DESC "cxgb4 Chelsio Communications"
674
675 #define MPA_KEY_REQ "MPA ID Req Frame"
676 #define MPA_KEY_REP "MPA ID Rep Frame"
677
678 #define MPA_MAX_PRIVATE_DATA 256
679 #define MPA_ENHANCED_RDMA_CONN 0x10
680 #define MPA_REJECT 0x20
681 #define MPA_CRC 0x40
682 #define MPA_MARKERS 0x80
683 #define MPA_FLAGS_MASK 0xE0
684
685 #define MPA_V2_PEER2PEER_MODEL 0x8000
686 #define MPA_V2_ZERO_LEN_FPDU_RTR 0x4000
687 #define MPA_V2_RDMA_WRITE_RTR 0x8000
688 #define MPA_V2_RDMA_READ_RTR 0x4000
689 #define MPA_V2_IRD_ORD_MASK 0x3FFF
690
691 #define c4iw_put_ep(ep) { \
692 pr_debug("put_ep ep %p refcnt %d\n", \
693 ep, kref_read(&((ep)->kref))); \
694 WARN_ON(kref_read(&((ep)->kref)) < 1); \
695 kref_put(&((ep)->kref), _c4iw_free_ep); \
696 }
697
698 #define c4iw_get_ep(ep) { \
699 pr_debug("get_ep ep %p, refcnt %d\n", \
700 ep, kref_read(&((ep)->kref))); \
701 kref_get(&((ep)->kref)); \
702 }
703 void _c4iw_free_ep(struct kref *kref);
704
705 struct mpa_message {
706 u8 key[16];
707 u8 flags;
708 u8 revision;
709 __be16 private_data_size;
710 u8 private_data[];
711 };
712
713 struct mpa_v2_conn_params {
714 __be16 ird;
715 __be16 ord;
716 };
717
718 struct terminate_message {
719 u8 layer_etype;
720 u8 ecode;
721 __be16 hdrct_rsvd;
722 u8 len_hdrs[];
723 };
724
725 #define TERM_MAX_LENGTH (sizeof(struct terminate_message) + 2 + 18 + 28)
726
727 enum c4iw_layers_types {
728 LAYER_RDMAP = 0x00,
729 LAYER_DDP = 0x10,
730 LAYER_MPA = 0x20,
731 RDMAP_LOCAL_CATA = 0x00,
732 RDMAP_REMOTE_PROT = 0x01,
733 RDMAP_REMOTE_OP = 0x02,
734 DDP_LOCAL_CATA = 0x00,
735 DDP_TAGGED_ERR = 0x01,
736 DDP_UNTAGGED_ERR = 0x02,
737 DDP_LLP = 0x03
738 };
739
740 enum c4iw_rdma_ecodes {
741 RDMAP_INV_STAG = 0x00,
742 RDMAP_BASE_BOUNDS = 0x01,
743 RDMAP_ACC_VIOL = 0x02,
744 RDMAP_STAG_NOT_ASSOC = 0x03,
745 RDMAP_TO_WRAP = 0x04,
746 RDMAP_INV_VERS = 0x05,
747 RDMAP_INV_OPCODE = 0x06,
748 RDMAP_STREAM_CATA = 0x07,
749 RDMAP_GLOBAL_CATA = 0x08,
750 RDMAP_CANT_INV_STAG = 0x09,
751 RDMAP_UNSPECIFIED = 0xff
752 };
753
754 enum c4iw_ddp_ecodes {
755 DDPT_INV_STAG = 0x00,
756 DDPT_BASE_BOUNDS = 0x01,
757 DDPT_STAG_NOT_ASSOC = 0x02,
758 DDPT_TO_WRAP = 0x03,
759 DDPT_INV_VERS = 0x04,
760 DDPU_INV_QN = 0x01,
761 DDPU_INV_MSN_NOBUF = 0x02,
762 DDPU_INV_MSN_RANGE = 0x03,
763 DDPU_INV_MO = 0x04,
764 DDPU_MSG_TOOBIG = 0x05,
765 DDPU_INV_VERS = 0x06
766 };
767
768 enum c4iw_mpa_ecodes {
769 MPA_CRC_ERR = 0x02,
770 MPA_MARKER_ERR = 0x03,
771 MPA_LOCAL_CATA = 0x05,
772 MPA_INSUFF_IRD = 0x06,
773 MPA_NOMATCH_RTR = 0x07,
774 };
775
776 enum c4iw_ep_state {
777 IDLE = 0,
778 LISTEN,
779 CONNECTING,
780 MPA_REQ_WAIT,
781 MPA_REQ_SENT,
782 MPA_REQ_RCVD,
783 MPA_REP_SENT,
784 FPDU_MODE,
785 ABORTING,
786 CLOSING,
787 MORIBUND,
788 DEAD,
789 };
790
791 enum c4iw_ep_flags {
792 PEER_ABORT_IN_PROGRESS = 0,
793 ABORT_REQ_IN_PROGRESS = 1,
794 RELEASE_RESOURCES = 2,
795 CLOSE_SENT = 3,
796 TIMEOUT = 4,
797 QP_REFERENCED = 5,
798 STOP_MPA_TIMER = 7,
799 };
800
801 enum c4iw_ep_history {
802 ACT_OPEN_REQ = 0,
803 ACT_OFLD_CONN = 1,
804 ACT_OPEN_RPL = 2,
805 ACT_ESTAB = 3,
806 PASS_ACCEPT_REQ = 4,
807 PASS_ESTAB = 5,
808 ABORT_UPCALL = 6,
809 ESTAB_UPCALL = 7,
810 CLOSE_UPCALL = 8,
811 ULP_ACCEPT = 9,
812 ULP_REJECT = 10,
813 TIMEDOUT = 11,
814 PEER_ABORT = 12,
815 PEER_CLOSE = 13,
816 CONNREQ_UPCALL = 14,
817 ABORT_CONN = 15,
818 DISCONN_UPCALL = 16,
819 EP_DISC_CLOSE = 17,
820 EP_DISC_ABORT = 18,
821 CONN_RPL_UPCALL = 19,
822 ACT_RETRY_NOMEM = 20,
823 ACT_RETRY_INUSE = 21,
824 CLOSE_CON_RPL = 22,
825 EP_DISC_FAIL = 24,
826 QP_REFED = 25,
827 QP_DEREFED = 26,
828 CM_ID_REFED = 27,
829 CM_ID_DEREFED = 28,
830 };
831
832 enum conn_pre_alloc_buffers {
833 CN_ABORT_REQ_BUF,
834 CN_ABORT_RPL_BUF,
835 CN_CLOSE_CON_REQ_BUF,
836 CN_DESTROY_BUF,
837 CN_FLOWC_BUF,
838 CN_MAX_CON_BUF
839 };
840
841 enum {
842 FLOWC_LEN = offsetof(struct fw_flowc_wr, mnemval[FW_FLOWC_MNEM_MAX])
843 };
844
845 union cpl_wr_size {
846 struct cpl_abort_req abrt_req;
847 struct cpl_abort_rpl abrt_rpl;
848 struct fw_ri_wr ri_req;
849 struct cpl_close_con_req close_req;
850 char flowc_buf[FLOWC_LEN];
851 };
852
853 struct c4iw_ep_common {
854 struct iw_cm_id *cm_id;
855 struct c4iw_qp *qp;
856 struct c4iw_dev *dev;
857 struct sk_buff_head ep_skb_list;
858 enum c4iw_ep_state state;
859 struct kref kref;
860 struct mutex mutex;
861 struct sockaddr_storage local_addr;
862 struct sockaddr_storage remote_addr;
863 struct c4iw_wr_wait *wr_waitp;
864 unsigned long flags;
865 unsigned long history;
866 };
867
868 struct c4iw_listen_ep {
869 struct c4iw_ep_common com;
870 unsigned int stid;
871 int backlog;
872 };
873
874 struct c4iw_ep_stats {
875 unsigned connect_neg_adv;
876 unsigned abort_neg_adv;
877 };
878
879 struct c4iw_ep {
880 struct c4iw_ep_common com;
881 struct c4iw_ep *parent_ep;
882 struct timer_list timer;
883 struct list_head entry;
884 unsigned int atid;
885 u32 hwtid;
886 u32 snd_seq;
887 u32 rcv_seq;
888 struct l2t_entry *l2t;
889 struct dst_entry *dst;
890 struct sk_buff *mpa_skb;
891 struct c4iw_mpa_attributes mpa_attr;
892 u8 mpa_pkt[sizeof(struct mpa_message) + MPA_MAX_PRIVATE_DATA];
893 unsigned int mpa_pkt_len;
894 u32 ird;
895 u32 ord;
896 u32 smac_idx;
897 u32 tx_chan;
898 u32 mtu;
899 u16 mss;
900 u16 emss;
901 u16 plen;
902 u16 rss_qid;
903 u16 txq_idx;
904 u16 ctrlq_idx;
905 u8 tos;
906 u8 retry_with_mpa_v1;
907 u8 tried_with_mpa_v1;
908 unsigned int retry_count;
909 int snd_win;
910 int rcv_win;
911 u32 snd_wscale;
912 struct c4iw_ep_stats stats;
913 u32 srqe_idx;
914 u32 rx_pdu_out_cnt;
915 struct sk_buff *peer_abort_skb;
916 };
917
to_ep(struct iw_cm_id * cm_id)918 static inline struct c4iw_ep *to_ep(struct iw_cm_id *cm_id)
919 {
920 return cm_id->provider_data;
921 }
922
to_listen_ep(struct iw_cm_id * cm_id)923 static inline struct c4iw_listen_ep *to_listen_ep(struct iw_cm_id *cm_id)
924 {
925 return cm_id->provider_data;
926 }
927
ocqp_supported(const struct cxgb4_lld_info * infop)928 static inline int ocqp_supported(const struct cxgb4_lld_info *infop)
929 {
930 #if defined(__i386__) || defined(__x86_64__) || defined(CONFIG_PPC64)
931 return infop->vr->ocq.size > 0;
932 #else
933 return 0;
934 #endif
935 }
936
937 u32 c4iw_id_alloc(struct c4iw_id_table *alloc);
938 void c4iw_id_free(struct c4iw_id_table *alloc, u32 obj);
939 int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
940 u32 reserved, u32 flags);
941 void c4iw_id_table_free(struct c4iw_id_table *alloc);
942
943 typedef int (*c4iw_handler_func)(struct c4iw_dev *dev, struct sk_buff *skb);
944
945 int c4iw_ep_redirect(void *ctx, struct dst_entry *old, struct dst_entry *new,
946 struct l2t_entry *l2t);
947 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qpid,
948 struct c4iw_dev_ucontext *uctx);
949 u32 c4iw_get_resource(struct c4iw_id_table *id_table);
950 void c4iw_put_resource(struct c4iw_id_table *id_table, u32 entry);
951 int c4iw_init_resource(struct c4iw_rdev *rdev, u32 nr_tpt,
952 u32 nr_pdid, u32 nr_srqt);
953 int c4iw_init_ctrl_qp(struct c4iw_rdev *rdev);
954 int c4iw_pblpool_create(struct c4iw_rdev *rdev);
955 int c4iw_rqtpool_create(struct c4iw_rdev *rdev);
956 int c4iw_ocqp_pool_create(struct c4iw_rdev *rdev);
957 void c4iw_pblpool_destroy(struct c4iw_rdev *rdev);
958 void c4iw_rqtpool_destroy(struct c4iw_rdev *rdev);
959 void c4iw_ocqp_pool_destroy(struct c4iw_rdev *rdev);
960 void c4iw_destroy_resource(struct c4iw_resource *rscp);
961 int c4iw_destroy_ctrl_qp(struct c4iw_rdev *rdev);
962 void c4iw_register_device(struct work_struct *work);
963 void c4iw_unregister_device(struct c4iw_dev *dev);
964 int __init c4iw_cm_init(void);
965 void c4iw_cm_term(void);
966 void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
967 struct c4iw_dev_ucontext *uctx);
968 void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev,
969 struct c4iw_dev_ucontext *uctx);
970 int c4iw_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc);
971 int c4iw_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
972 const struct ib_send_wr **bad_wr);
973 int c4iw_post_receive(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
974 const struct ib_recv_wr **bad_wr);
975 int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
976 int c4iw_create_listen(struct iw_cm_id *cm_id, int backlog);
977 int c4iw_destroy_listen(struct iw_cm_id *cm_id);
978 int c4iw_accept_cr(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param);
979 int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len);
980 void c4iw_qp_add_ref(struct ib_qp *qp);
981 void c4iw_qp_rem_ref(struct ib_qp *qp);
982 struct ib_mr *c4iw_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
983 u32 max_num_sg);
984 int c4iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
985 unsigned int *sg_offset);
986 int c4iw_dealloc_mw(struct ib_mw *mw);
987 void c4iw_dealloc(struct uld_ctx *ctx);
988 int c4iw_alloc_mw(struct ib_mw *mw, struct ib_udata *udata);
989 struct ib_mr *c4iw_reg_user_mr(struct ib_pd *pd, u64 start,
990 u64 length, u64 virt, int acc,
991 struct ib_udata *udata);
992 struct ib_mr *c4iw_get_dma_mr(struct ib_pd *pd, int acc);
993 int c4iw_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata);
994 int c4iw_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata);
995 int c4iw_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
996 struct ib_udata *udata);
997 int c4iw_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
998 int c4iw_modify_srq(struct ib_srq *ib_srq, struct ib_srq_attr *attr,
999 enum ib_srq_attr_mask srq_attr_mask,
1000 struct ib_udata *udata);
1001 int c4iw_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata);
1002 int c4iw_create_srq(struct ib_srq *srq, struct ib_srq_init_attr *attrs,
1003 struct ib_udata *udata);
1004 int c4iw_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata);
1005 struct ib_qp *c4iw_create_qp(struct ib_pd *pd,
1006 struct ib_qp_init_attr *attrs,
1007 struct ib_udata *udata);
1008 int c4iw_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1009 int attr_mask, struct ib_udata *udata);
1010 int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1011 int attr_mask, struct ib_qp_init_attr *init_attr);
1012 struct ib_qp *c4iw_get_qp(struct ib_device *dev, int qpn);
1013 u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size);
1014 void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
1015 u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size);
1016 void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size);
1017 u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size);
1018 void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size);
1019 void c4iw_flush_hw_cq(struct c4iw_cq *chp, struct c4iw_qp *flush_qhp);
1020 void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count);
1021 int c4iw_ep_disconnect(struct c4iw_ep *ep, int abrupt, gfp_t gfp);
1022 int c4iw_flush_rq(struct t4_wq *wq, struct t4_cq *cq, int count);
1023 int c4iw_flush_sq(struct c4iw_qp *qhp);
1024 int c4iw_ev_handler(struct c4iw_dev *rnicp, u32 qid);
1025 u16 c4iw_rqes_posted(struct c4iw_qp *qhp);
1026 int c4iw_post_terminate(struct c4iw_qp *qhp, struct t4_cqe *err_cqe);
1027 u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
1028 void c4iw_put_cqid(struct c4iw_rdev *rdev, u32 qid,
1029 struct c4iw_dev_ucontext *uctx);
1030 u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx);
1031 void c4iw_put_qpid(struct c4iw_rdev *rdev, u32 qid,
1032 struct c4iw_dev_ucontext *uctx);
1033 void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe);
1034
1035 extern struct cxgb4_client t4c_client;
1036 extern c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS];
1037 void __iomem *c4iw_bar2_addrs(struct c4iw_rdev *rdev, unsigned int qid,
1038 enum cxgb4_bar2_qtype qtype,
1039 unsigned int *pbar2_qid, u64 *pbar2_pa);
1040 int c4iw_alloc_srq_idx(struct c4iw_rdev *rdev);
1041 void c4iw_free_srq_idx(struct c4iw_rdev *rdev, int idx);
1042 extern void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe);
1043 extern int c4iw_wr_log;
1044 extern int db_fc_threshold;
1045 extern int db_coalescing_threshold;
1046 extern int use_dsgl;
1047 void c4iw_invalidate_mr(struct c4iw_dev *rhp, u32 rkey);
1048 void c4iw_dispatch_srq_limit_reached_event(struct c4iw_srq *srq);
1049 void c4iw_copy_wr_to_srq(struct t4_srq *srq, union t4_recv_wr *wqe, u8 len16);
1050 void c4iw_flush_srqidx(struct c4iw_qp *qhp, u32 srqidx);
1051 int c4iw_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
1052 const struct ib_recv_wr **bad_wr);
1053 struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp);
1054
1055 int c4iw_fill_res_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr);
1056 int c4iw_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ibcq);
1057 int c4iw_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ibqp);
1058 int c4iw_fill_res_cm_id_entry(struct sk_buff *msg, struct rdma_cm_id *cm_id);
1059
1060 #endif
1061
