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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#define OPA_BTH_MIG_REQ BIT(31)
99
100#define RC_OP(x) IB_OPCODE_RC_##x
101#define UC_OP(x) IB_OPCODE_UC_##x
102
103
104enum {
105 HFI1_HAS_GRH = (1 << 0),
106};
107
108#define LRH_16B_BYTES (FIELD_SIZEOF(struct hfi1_16b_header, lrh))
109#define LRH_16B_DWORDS (LRH_16B_BYTES / sizeof(u32))
110#define LRH_9B_BYTES (FIELD_SIZEOF(struct ib_header, lrh))
111#define LRH_9B_DWORDS (LRH_9B_BYTES / sizeof(u32))
112
113struct hfi1_16b_header {
114 u32 lrh[4];
115 union {
116 struct {
117 struct ib_grh grh;
118 struct ib_other_headers oth;
119 } l;
120 struct ib_other_headers oth;
121 } u;
122} __packed;
123
124struct hfi1_opa_header {
125 union {
126 struct ib_header ibh;
127 struct hfi1_16b_header opah;
128 };
129 u8 hdr_type;
130} __packed;
131
132struct hfi1_ahg_info {
133 u32 ahgdesc[2];
134 u16 tx_flags;
135 u8 ahgcount;
136 u8 ahgidx;
137};
138
139struct hfi1_sdma_header {
140 __le64 pbc;
141 struct hfi1_opa_header hdr;
142} __packed;
143
144
145
146
147
148struct hfi1_qp_priv {
149 struct hfi1_ahg_info *s_ahg;
150 struct sdma_engine *s_sde;
151 struct send_context *s_sendcontext;
152 u8 s_sc;
153 struct iowait s_iowait;
154 struct rvt_qp *owner;
155 u8 hdr_type;
156};
157
158
159
160
161
162struct hfi1_pkt_state {
163 struct hfi1_ibdev *dev;
164 struct hfi1_ibport *ibp;
165 struct hfi1_pportdata *ppd;
166 struct verbs_txreq *s_txreq;
167 unsigned long flags;
168 unsigned long timeout;
169 unsigned long timeout_int;
170 int cpu;
171 u8 opcode;
172 bool in_thread;
173 bool pkts_sent;
174};
175
176#define HFI1_PSN_CREDIT 16
177
178struct hfi1_opcode_stats {
179 u64 n_packets;
180 u64 n_bytes;
181};
182
183struct hfi1_opcode_stats_perctx {
184 struct hfi1_opcode_stats stats[256];
185};
186
187static inline void inc_opstats(
188 u32 tlen,
189 struct hfi1_opcode_stats *stats)
190{
191#ifdef CONFIG_DEBUG_FS
192 stats->n_bytes += tlen;
193 stats->n_packets++;
194#endif
195}
196
197struct hfi1_ibport {
198 struct rvt_qp __rcu *qp[2];
199 struct rvt_ibport rvp;
200
201
202 u8 sl_to_sc[32];
203 u8 sc_to_sl[32];
204};
205
206struct hfi1_ibdev {
207 struct rvt_dev_info rdi;
208
209
210
211 seqlock_t txwait_lock ____cacheline_aligned_in_smp;
212 struct list_head txwait;
213 struct list_head memwait;
214 struct kmem_cache *verbs_txreq_cache;
215 u64 n_txwait;
216 u64 n_kmem_wait;
217
218
219 seqlock_t iowait_lock ____cacheline_aligned_in_smp;
220 u64 n_piowait;
221 u64 n_piodrain;
222 struct timer_list mem_timer;
223
224#ifdef CONFIG_DEBUG_FS
225
226 struct dentry *hfi1_ibdev_dbg;
227
228 struct dentry *hfi1_ibdev_link;
229#ifdef CONFIG_FAULT_INJECTION
230 struct fault_opcode *fault_opcode;
231 struct fault_packet *fault_packet;
232 bool fault_suppress_err;
233#endif
234#endif
235};
236
237static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
238{
239 struct rvt_dev_info *rdi;
240
241 rdi = container_of(ibdev, struct rvt_dev_info, ibdev);
242 return container_of(rdi, struct hfi1_ibdev, rdi);
243}
244
245static inline struct rvt_qp *iowait_to_qp(struct iowait *s_iowait)
246{
247 struct hfi1_qp_priv *priv;
248
249 priv = container_of(s_iowait, struct hfi1_qp_priv, s_iowait);
250 return priv->owner;
251}
252
253
254
255
256void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
257 u32 qp1, u32 qp2, u32 lid1, u32 lid2);
258void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
259void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
260void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
261int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
262 const struct ib_wc *in_wc, const struct ib_grh *in_grh,
263 const struct ib_mad_hdr *in_mad, size_t in_mad_size,
264 struct ib_mad_hdr *out_mad, size_t *out_mad_size,
265 u16 *out_mad_pkey_index);
266
267
268
269
270
271
272
273
274
275
276
277#define PSN_MASK 0x7FFFFFFF
278#define PSN_SHIFT 1
279#define PSN_MODIFY_MASK 0xFFFFFF
280
281
282
283
284
285static inline int cmp_psn(u32 a, u32 b)
286{
287 return (((int)a) - ((int)b)) << PSN_SHIFT;
288}
289
290
291
292
293static inline u32 mask_psn(u32 a)
294{
295 return a & PSN_MASK;
296}
297
298
299
300
301static inline u32 delta_psn(u32 a, u32 b)
302{
303 return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
304}
305
306struct verbs_txreq;
307void hfi1_put_txreq(struct verbs_txreq *tx);
308
309int hfi1_verbs_send(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
310
311void hfi1_copy_sge(struct rvt_sge_state *ss, void *data, u32 length,
312 bool release, bool copy_last);
313
314void hfi1_cnp_rcv(struct hfi1_packet *packet);
315
316void hfi1_uc_rcv(struct hfi1_packet *packet);
317
318void hfi1_rc_rcv(struct hfi1_packet *packet);
319
320void hfi1_rc_hdrerr(
321 struct hfi1_ctxtdata *rcd,
322 struct hfi1_packet *packet,
323 struct rvt_qp *qp);
324
325u8 ah_to_sc(struct ib_device *ibdev, struct rdma_ah_attr *ah_attr);
326
327void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah);
328
329void hfi1_ud_rcv(struct hfi1_packet *packet);
330
331int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
332
333int hfi1_rvt_get_rwqe(struct rvt_qp *qp, int wr_id_only);
334
335void hfi1_migrate_qp(struct rvt_qp *qp);
336
337int hfi1_check_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
338 int attr_mask, struct ib_udata *udata);
339
340void hfi1_modify_qp(struct rvt_qp *qp, struct ib_qp_attr *attr,
341 int attr_mask, struct ib_udata *udata);
342void hfi1_restart_rc(struct rvt_qp *qp, u32 psn, int wait);
343int hfi1_check_send_wqe(struct rvt_qp *qp, struct rvt_swqe *wqe);
344
345extern const u32 rc_only_opcode;
346extern const u32 uc_only_opcode;
347
348int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet);
349
350u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
351 const struct ib_global_route *grh, u32 hwords, u32 nwords);
352
353void hfi1_make_ruc_header(struct rvt_qp *qp, struct ib_other_headers *ohdr,
354 u32 bth0, u32 bth2, int middle,
355 struct hfi1_pkt_state *ps);
356
357void _hfi1_do_send(struct work_struct *work);
358
359void hfi1_do_send_from_rvt(struct rvt_qp *qp);
360
361void hfi1_do_send(struct rvt_qp *qp, bool in_thread);
362
363void hfi1_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
364 enum ib_wc_status status);
365
366void hfi1_send_rc_ack(struct hfi1_packet *packet, bool is_fecn);
367
368int hfi1_make_rc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
369
370int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
371
372int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps);
373
374int hfi1_register_ib_device(struct hfi1_devdata *);
375
376void hfi1_unregister_ib_device(struct hfi1_devdata *);
377
378void hfi1_ib_rcv(struct hfi1_packet *packet);
379
380void hfi1_16B_rcv(struct hfi1_packet *packet);
381
382unsigned hfi1_get_npkeys(struct hfi1_devdata *);
383
384int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
385 u64 pbc);
386
387int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
388 u64 pbc);
389
390int hfi1_wss_init(void);
391void hfi1_wss_exit(void);
392
393
394static inline int wss_llc_size(void)
395{
396
397 return boot_cpu_data.x86_cache_size;
398}
399
400
401static inline void cacheless_memcpy(void *dst, void *src, size_t n)
402{
403
404
405
406
407
408
409 __copy_user_nocache(dst, (void __user *)src, n, 0);
410}
411
412static inline bool opa_bth_is_migration(struct ib_other_headers *ohdr)
413{
414 return ohdr->bth[1] & cpu_to_be32(OPA_BTH_MIG_REQ);
415}
416
417extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
418
419extern const u8 hdr_len_by_opcode[];
420
421extern const int ib_rvt_state_ops[];
422
423extern __be64 ib_hfi1_sys_image_guid;
424
425extern unsigned int hfi1_max_cqes;
426
427extern unsigned int hfi1_max_cqs;
428
429extern unsigned int hfi1_max_qp_wrs;
430
431extern unsigned int hfi1_max_qps;
432
433extern unsigned int hfi1_max_sges;
434
435extern unsigned int hfi1_max_mcast_grps;
436
437extern unsigned int hfi1_max_mcast_qp_attached;
438
439extern unsigned int hfi1_max_srqs;
440
441extern unsigned int hfi1_max_srq_sges;
442
443extern unsigned int hfi1_max_srq_wrs;
444
445extern unsigned short piothreshold;
446
447extern const u32 ib_hfi1_rnr_table[];
448
449#endif
450