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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
75#define HFI1_MAX_RDMA_ATOMIC 16
76
77
78
79
80
81#define HFI1_UVERBS_ABI_VERSION 2
82
83
84#define IB_PMA_SAMPLE_STATUS_DONE 0x00
85#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
86#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
87
88
89#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
90#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
91#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
92#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
93#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
94
95#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0)
96
97#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
98
99#define RC_OP(x) IB_OPCODE_RC_##x
100#define UC_OP(x) IB_OPCODE_UC_##x
101
102
103enum {
104 HFI1_HAS_GRH = (1 << 0),
105};
106
107struct hfi1_ahg_info {
108 u32 ahgdesc[2];
109 u16 tx_flags;
110 u8 ahgcount;
111 u8 ahgidx;
112};
113
114struct hfi1_sdma_header {
115 __le64 pbc;
116 struct ib_header hdr;
117} __packed;
118
119
120
121
122
123struct hfi1_qp_priv {
124 struct hfi1_ahg_info *s_ahg;
125 struct sdma_engine *s_sde;
126 struct send_context *s_sendcontext;
127 u8 s_sc;
128 u8 r_adefered;
129 struct iowait s_iowait;
130 struct timer_list s_rnr_timer;
131 struct rvt_qp *owner;
132};
133
134
135
136
137
138struct hfi1_pkt_state {
139 struct hfi1_ibdev *dev;
140 struct hfi1_ibport *ibp;
141 struct hfi1_pportdata *ppd;
142 struct verbs_txreq *s_txreq;
143 unsigned long flags;
144};
145
146#define HFI1_PSN_CREDIT 16
147
148struct hfi1_opcode_stats {
149 u64 n_packets;
150 u64 n_bytes;
151};
152
153struct hfi1_opcode_stats_perctx {
154 struct hfi1_opcode_stats stats[256];
155};
156
157static inline void inc_opstats(
158 u32 tlen,
159 struct hfi1_opcode_stats *stats)
160{
161#ifdef CONFIG_DEBUG_FS
162 stats->n_bytes += tlen;
163 stats->n_packets++;
164#endif
165}
166
167struct hfi1_ibport {
168 struct rvt_qp __rcu *qp[2];
169 struct rvt_ibport rvp;
170
171
172 u8 sl_to_sc[32];
173 u8 sc_to_sl[32];
174};
175
176struct hfi1_ibdev {
177 struct rvt_dev_info rdi;
178
179
180
181 seqlock_t txwait_lock ____cacheline_aligned_in_smp;
182 struct list_head txwait;
183 struct list_head memwait;
184 struct kmem_cache *verbs_txreq_cache;
185 u64 n_txwait;
186 u64 n_kmem_wait;
187
188
189 seqlock_t iowait_lock ____cacheline_aligned_in_smp;
190 u64 n_piowait;
191 u64 n_piodrain;
192 struct timer_list mem_timer;
193
194#ifdef CONFIG_DEBUG_FS
195
196 struct dentry *hfi1_ibdev_dbg;
197
198 struct dentry *hfi1_ibdev_link;
199#endif
200};
201
202static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
203{
204 struct rvt_dev_info *rdi;
205
206 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
207 return container_of(rdi, struct hfi1_ibdev, rdi);
208}
209
210static inline struct rvt_qp *iowait_to_qp(struct iowait *s_iowait)
211{
212 struct hfi1_qp_priv *priv;
213
214 priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
215 return priv->owner;
216}
217
218
219
220
221
222static inline int hfi1_send_ok(struct rvt_qp *qp)
223{
224 return !(qp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT_IO)) &&
225 (qp->s_hdrwords || (qp->s_flags & RVT_S_RESP_PENDING) ||
226 !(qp->s_flags & RVT_S_ANY_WAIT_SEND));
227}
228
229
230
231
232void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
233 u32 qp1, u32 qp2, u16 lid1, u16 lid2);
234void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
235void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
236void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
237int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
238 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
239 const struct ib_mad_hdr *in_mad, size_t in_mad_size,
240 struct ib_mad_hdr *out_mad, size_t *out_mad_size,
241 u16 *out_mad_pkey_index);
242
243
244
245
246
247
248
249
250
251
252
253#ifndef CONFIG_HFI1_VERBS_31BIT_PSN
254#define PSN_MASK 0xFFFFFF
255#define PSN_SHIFT 8
256#else
257#define PSN_MASK 0x7FFFFFFF
258#define PSN_SHIFT 1
259#endif
260#define PSN_MODIFY_MASK 0xFFFFFF
261
262
263
264
265
266static inline int cmp_msn(u32 a, u32 b)
267{
268 return (((int)a) - ((int)b)) << 8;
269}
270
271
272
273
274
275static inline int cmp_psn(u32 a, u32 b)
276{
277 return (((int)a) - ((int)b)) << PSN_SHIFT;
278}
279
280
281
282
283static inline u32 mask_psn(u32 a)
284{
285 return a & PSN_MASK;
286}
287
288
289
290
291static inline u32 delta_psn(u32 a, u32 b)
292{
293 return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
294}
295
296struct verbs_txreq;
297void hfi1_put_txreq(struct verbs_txreq *tx);
298
299int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
300
301void hfi1_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
302 int release, int copy_last);
303
304void hfi1_skip_sge(struct rvt_sge_state *ss, u32 length, int release);
305
306void hfi1_cnp_rcv(struct hfi1_packet *packet);
307
308void hfi1_uc_rcv(struct hfi1_packet *packet);
309
310void hfi1_rc_rcv(struct hfi1_packet *packet);
311
312void hfi1_rc_hdrerr(
313 struct hfi1_ctxtdata *rcd,
314 struct ib_header *hdr,
315 u32 rcv_flags,
316 struct rvt_qp *qp);
317
318u8 ah_to_sc(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
319
320struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);
321
322void hfi1_rc_rnr_retry(unsigned long arg);
323void hfi1_add_rnr_timer(struct rvt_qp *qp, u32 to);
324void hfi1_rc_timeout(unsigned long arg);
325void hfi1_del_timers_sync(struct rvt_qp *qp);
326void hfi1_stop_rc_timers(struct rvt_qp *qp);
327
328void hfi1_rc_send_complete(struct rvt_qp *qp, struct ib_header *hdr);
329
330void hfi1_rc_error(struct rvt_qp *qp, enum ib_wc_status err);
331
332void hfi1_ud_rcv(struct hfi1_packet *packet);
333
334int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
335
336int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only);
337
338void hfi1_migrate_qp(struct rvt_qp *qp);
339
340int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
341 int attr_mask, struct ib_udata *udata);
342
343void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
344 int attr_mask, struct ib_udata *udata);
345
346int hfi1_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);
347
348extern const u32 rc_only_opcode;
349extern const u32 uc_only_opcode;
350
351static inline u8 get_opcode(struct ib_header *h)
352{
353 u16 lnh = be16_to_cpu(h->lrh[0]) & 3;
354
355 if (lnh == IB_LNH_IBA_LOCAL)
356 return be32_to_cpu(h->u.oth.bth[0]) >> 24;
357 else
358 return be32_to_cpu(h->u.l.oth.bth[0]) >> 24;
359}
360
361int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct ib_header *hdr,
362 int has_grh, struct rvt_qp *qp, u32 bth0);
363
364u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
365 struct ib_global_route *grh, u32 hwords, u32 nwords);
366
367void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
368 u32 bth0, u32 bth2, int middle,
369 struct hfi1_pkt_state *ps);
370
371void _hfi1_do_send(struct work_struct *work);
372
373void hfi1_do_send_from_rvt(struct rvt_qp *qp);
374
375void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
376
377void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
378 enum ib_wc_status status);
379
380void hfi1_send_rc_ack(struct hfi1_ctxtdata *, struct rvt_qp *qp, int is_fecn);
381
382int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
383
384int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
385
386int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
387
388int hfi1_register_ib_device(struct hfi1_devdata *);
389
390void hfi1_unregister_ib_device(struct hfi1_devdata *);
391
392void hfi1_ib_rcv(struct hfi1_packet *packet);
393
394unsigned hfi1_get_npkeys(struct hfi1_devdata *);
395
396int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
397 u64 pbc);
398
399int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
400 u64 pbc);
401
402int hfi1_wss_init(void);
403void hfi1_wss_exit(void);
404
405
406static inline int wss_llc_size(void)
407{
408
409 return boot_cpu_data.x86_cache_size;
410}
411
412
413static inline void cacheless_memcpy(void *dst, void *src, size_t n)
414{
415
416
417
418
419
420
421 __copy_user_nocache(dst, (void __user *)src, n, 0);
422}
423
424extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
425
426extern const u8 hdr_len_by_opcode[];
427
428extern const int ib_rvt_state_ops[];
429
430extern __be64 ib_hfi1_sys_image_guid;
431
432extern unsigned int hfi1_max_cqes;
433
434extern unsigned int hfi1_max_cqs;
435
436extern unsigned int hfi1_max_qp_wrs;
437
438extern unsigned int hfi1_max_qps;
439
440extern unsigned int hfi1_max_sges;
441
442extern unsigned int hfi1_max_mcast_grps;
443
444extern unsigned int hfi1_max_mcast_qp_attached;
445
446extern unsigned int hfi1_max_srqs;
447
448extern unsigned int hfi1_max_srq_sges;
449
450extern unsigned int hfi1_max_srq_wrs;
451
452extern unsigned short piothreshold;
453
454extern const u32 ib_hfi1_rnr_table[];
455
456#endif
457