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48#ifndef HFI1_VERBS_H
49#define HFI1_VERBS_H
50
51#include <linux/types.h>
52#include <linux/seqlock.h>
53#include <linux/kernel.h>
54#include <linux/interrupt.h>
55#include <linux/kref.h>
56#include <linux/workqueue.h>
57#include <linux/kthread.h>
58#include <linux/completion.h>
59#include <linux/slab.h>
60#include <rdma/ib_pack.h>
61#include <rdma/ib_user_verbs.h>
62#include <rdma/ib_mad.h>
63#include <rdma/ib_hdrs.h>
64#include <rdma/rdma_vt.h>
65#include <rdma/rdmavt_qp.h>
66#include <rdma/rdmavt_cq.h>
67
68struct hfi1_ctxtdata;
69struct hfi1_pportdata;
70struct hfi1_devdata;
71struct hfi1_packet;
72
73#include "iowait.h"
74#include "tid_rdma.h"
75#include "opfn.h"
76
77#define HFI1_MAX_RDMA_ATOMIC 16
78
79
80
81
82
83#define HFI1_UVERBS_ABI_VERSION 2
84
85
86#define IB_PMA_SAMPLE_STATUS_DONE 0x00
87#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
88#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
89
90
91#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
92#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
93#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
94#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
95#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
96
97#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0)
98
99#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
100#define OPA_BTH_MIG_REQ BIT(31)
101
102#define RC_OP(x) IB_OPCODE_RC_##x
103#define UC_OP(x) IB_OPCODE_UC_##x
104
105
106enum {
107 HFI1_HAS_GRH = (1 << 0),
108};
109
110#define LRH_16B_BYTES (sizeof_field(struct hfi1_16b_header, lrh))
111#define LRH_16B_DWORDS (LRH_16B_BYTES / sizeof(u32))
112#define LRH_9B_BYTES (sizeof_field(struct ib_header, lrh))
113#define LRH_9B_DWORDS (LRH_9B_BYTES / sizeof(u32))
114
115
116struct opa_16b_mgmt {
117 __be32 dest_qpn;
118 __be32 src_qpn;
119};
120
121struct hfi1_16b_header {
122 u32 lrh[4];
123 union {
124 struct {
125 struct ib_grh grh;
126 struct ib_other_headers oth;
127 } l;
128 struct ib_other_headers oth;
129 struct opa_16b_mgmt mgmt;
130 } u;
131} __packed;
132
133struct hfi1_opa_header {
134 union {
135 struct ib_header ibh;
136 struct hfi1_16b_header opah;
137 };
138 u8 hdr_type;
139} __packed;
140
141struct hfi1_ahg_info {
142 u32 ahgdesc[2];
143 u16 tx_flags;
144 u8 ahgcount;
145 u8 ahgidx;
146};
147
148struct hfi1_sdma_header {
149 __le64 pbc;
150 struct hfi1_opa_header hdr;
151} __packed;
152
153
154
155
156
157struct hfi1_qp_priv {
158 struct hfi1_ahg_info *s_ahg;
159 struct sdma_engine *s_sde;
160 struct send_context *s_sendcontext;
161 struct hfi1_ctxtdata *rcd;
162 struct page **pages;
163 u32 tid_enqueue;
164 u8 s_sc;
165 struct iowait s_iowait;
166 struct timer_list s_tid_timer;
167 struct timer_list s_tid_retry_timer;
168 struct list_head tid_wait;
169 struct hfi1_opfn_data opfn;
170 struct tid_flow_state flow_state;
171 struct tid_rdma_qp_params tid_rdma;
172 struct rvt_qp *owner;
173 u16 s_running_pkt_size;
174 u8 hdr_type;
175 struct rvt_sge_state tid_ss;
176 atomic_t n_requests;
177
178 atomic_t n_tid_requests;
179 unsigned long tid_timer_timeout_jiffies;
180 unsigned long tid_retry_timeout_jiffies;
181
182
183 u8 s_state;
184 u8 s_retry;
185 u8 rnr_nak_state;
186 u8 s_nak_state;
187 u32 s_nak_psn;
188 u32 s_flags;
189 u32 s_tid_cur;
190 u32 s_tid_head;
191 u32 s_tid_tail;
192 u32 r_tid_head;
193 u32 r_tid_tail;
194 u32 r_tid_ack;
195 u32 r_tid_alloc;
196 u32 pending_tid_w_segs;
197 u32 pending_tid_w_resp;
198 u32 alloc_w_segs;
199
200
201
202 u32 tid_r_reqs;
203 u32 tid_r_comp;
204 u32 pending_tid_r_segs;
205 u16 pkts_ps;
206 u8 timeout_shift;
207
208 u32 r_next_psn_kdeth;
209 u32 r_next_psn_kdeth_save;
210 u32 s_resync_psn;
211 u8 sync_pt;
212 u8 resync;
213};
214
215#define HFI1_QP_WQE_INVALID ((u32)-1)
216
217struct hfi1_swqe_priv {
218 struct tid_rdma_request tid_req;
219 struct rvt_sge_state ss;
220};
221
222struct hfi1_ack_priv {
223 struct rvt_sge_state ss;
224 struct tid_rdma_request tid_req;
225};
226
227
228
229
230
231struct iowait_work;
232struct hfi1_pkt_state {
233 struct hfi1_ibdev *dev;
234 struct hfi1_ibport *ibp;
235 struct hfi1_pportdata *ppd;
236 struct verbs_txreq *s_txreq;
237 struct iowait_work *wait;
238 unsigned long flags;
239 unsigned long timeout;
240 unsigned long timeout_int;
241 int cpu;
242 u8 opcode;
243 bool in_thread;
244 bool pkts_sent;
245};
246
247#define HFI1_PSN_CREDIT 16
248
249struct hfi1_opcode_stats {
250 u64 n_packets;
251 u64 n_bytes;
252};
253
254struct hfi1_opcode_stats_perctx {
255 struct hfi1_opcode_stats stats[256];
256};
257
258static inline void inc_opstats(
259 u32 tlen,
260 struct hfi1_opcode_stats *stats)
261{
262#ifdef CONFIG_DEBUG_FS
263 stats->n_bytes += tlen;
264 stats->n_packets++;
265#endif
266}
267
268struct hfi1_ibport {
269 struct rvt_qp __rcu *qp[2];
270 struct rvt_ibport rvp;
271
272
273 u8 sl_to_sc[32];
274 u8 sc_to_sl[32];
275};
276
277struct hfi1_ibdev {
278 struct rvt_dev_info rdi;
279
280
281
282 seqlock_t txwait_lock ____cacheline_aligned_in_smp;
283 struct list_head txwait;
284 struct list_head memwait;
285 struct kmem_cache *verbs_txreq_cache;
286 u64 n_txwait;
287 u64 n_kmem_wait;
288 u64 n_tidwait;
289
290
291 seqlock_t iowait_lock ____cacheline_aligned_in_smp;
292 u64 n_piowait;
293 u64 n_piodrain;
294 struct timer_list mem_timer;
295
296#ifdef CONFIG_DEBUG_FS
297
298 struct dentry *hfi1_ibdev_dbg;
299
300 struct dentry *hfi1_ibdev_link;
301#ifdef CONFIG_FAULT_INJECTION
302 struct fault *fault;
303#endif
304#endif
305};
306
307static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
308{
309 struct rvt_dev_info *rdi;
310
311 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
312 return container_of(rdi, struct hfi1_ibdev, rdi);
313}
314
315static inline struct rvt_qp *iowait_to_qp(struct iowait *s_iowait)
316{
317 struct hfi1_qp_priv *priv;
318
319 priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
320 return priv->owner;
321}
322
323
324
325
326void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
327 u32 qp1, u32 qp2, u32 lid1, u32 lid2);
328void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u32 port_num);
329void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
330void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
331int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u32 port,
332 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
333 const struct ib_mad *in_mad, struct ib_mad *out_mad,
334 size_t *out_mad_size, u16 *out_mad_pkey_index);
335
336
337
338
339
340
341
342
343
344
345
346#define PSN_MASK 0x7FFFFFFF
347#define PSN_SHIFT 1
348#define PSN_MODIFY_MASK 0xFFFFFF
349
350
351
352
353
354static inline int cmp_psn(u32 a, u32 b)
355{
356 return (((int)a) - ((int)b)) << PSN_SHIFT;
357}
358
359
360
361
362static inline u32 mask_psn(u32 a)
363{
364 return a & PSN_MASK;
365}
366
367
368
369
370static inline u32 delta_psn(u32 a, u32 b)
371{
372 return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
373}
374
375static inline struct tid_rdma_request *wqe_to_tid_req(struct rvt_swqe *wqe)
376{
377 return &((struct hfi1_swqe_priv *)wqe->priv)->tid_req;
378}
379
380static inline struct tid_rdma_request *ack_to_tid_req(struct rvt_ack_entry *e)
381{
382 return &((struct hfi1_ack_priv *)e->priv)->tid_req;
383}
384
385
386
387
388
389static inline u32 __full_flow_psn(struct flow_state *state, u32 psn)
390{
391 return mask_psn((state->generation << HFI1_KDETH_BTH_SEQ_SHIFT) |
392 (psn & HFI1_KDETH_BTH_SEQ_MASK));
393}
394
395static inline u32 full_flow_psn(struct tid_rdma_flow *flow, u32 psn)
396{
397 return __full_flow_psn(&flow->flow_state, psn);
398}
399
400struct verbs_txreq;
401void hfi1_put_txreq(struct verbs_txreq *tx);
402
403int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
404
405void hfi1_cnp_rcv(struct hfi1_packet *packet);
406
407void hfi1_uc_rcv(struct hfi1_packet *packet);
408
409void hfi1_rc_rcv(struct hfi1_packet *packet);
410
411void hfi1_rc_hdrerr(
412 struct hfi1_ctxtdata *rcd,
413 struct hfi1_packet *packet,
414 struct rvt_qp *qp);
415
416u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
417
418void hfi1_rc_verbs_aborted(struct rvt_qp *qp, struct hfi1_opa_header *opah);
419void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah);
420
421void hfi1_ud_rcv(struct hfi1_packet *packet);
422
423int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
424
425void hfi1_migrate_qp(struct rvt_qp *qp);
426
427int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
428 int attr_mask, struct ib_udata *udata);
429
430void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
431 int attr_mask, struct ib_udata *udata);
432void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
433int hfi1_setup_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe,
434 bool *call_send);
435
436extern const u32 rc_only_opcode;
437extern const u32 uc_only_opcode;
438
439int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet);
440
441u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
442 const struct ib_global_route *grh, u32 hwords, u32 nwords);
443
444void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
445 u32 bth0, u32 bth1, u32 bth2, int middle,
446 struct hfi1_pkt_state *ps);
447
448bool hfi1_schedule_send_yield(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
449 bool tid);
450
451void _hfi1_do_send(struct work_struct *work);
452
453void hfi1_do_send_from_rvt(struct rvt_qp *qp);
454
455void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
456
457void hfi1_send_rc_ack(struct hfi1_packet *packet, bool is_fecn);
458
459int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
460
461int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
462
463int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
464
465int hfi1_register_ib_device(struct hfi1_devdata *);
466
467void hfi1_unregister_ib_device(struct hfi1_devdata *);
468
469void hfi1_kdeth_eager_rcv(struct hfi1_packet *packet);
470
471void hfi1_kdeth_expected_rcv(struct hfi1_packet *packet);
472
473void hfi1_ib_rcv(struct hfi1_packet *packet);
474
475void hfi1_16B_rcv(struct hfi1_packet *packet);
476
477unsigned hfi1_get_npkeys(struct hfi1_devdata *);
478
479int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
480 u64 pbc);
481
482int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
483 u64 pbc);
484
485static inline bool opa_bth_is_migration(struct ib_other_headers *ohdr)
486{
487 return ohdr->bth[1] & cpu_to_be32(OPA_BTH_MIG_REQ);
488}
489
490void hfi1_wait_kmem(struct rvt_qp *qp);
491
492static inline void hfi1_trdma_send_complete(struct rvt_qp *qp,
493 struct rvt_swqe *wqe,
494 enum ib_wc_status status)
495{
496 trdma_clean_swqe(qp, wqe);
497 rvt_send_complete(qp, wqe, status);
498}
499
500extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
501
502extern const u8 hdr_len_by_opcode[];
503
504extern const int ib_rvt_state_ops[];
505
506extern __be64 ib_hfi1_sys_image_guid;
507
508extern unsigned int hfi1_max_cqes;
509
510extern unsigned int hfi1_max_cqs;
511
512extern unsigned int hfi1_max_qp_wrs;
513
514extern unsigned int hfi1_max_qps;
515
516extern unsigned int hfi1_max_sges;
517
518extern unsigned int hfi1_max_mcast_grps;
519
520extern unsigned int hfi1_max_mcast_qp_attached;
521
522extern unsigned int hfi1_max_srqs;
523
524extern unsigned int hfi1_max_srq_sges;
525
526extern unsigned int hfi1_max_srq_wrs;
527
528extern unsigned short piothreshold;
529
530extern const u32 ib_hfi1_rnr_table[];
531
532#endif
533