xref: /openbmc/linux/drivers/infiniband/hw/hfi1/trace.c (revision 2dc30eb9)
1 /*
2  * Copyright(c) 2015 - 2020 Intel Corporation.
3  *
4  * This file is provided under a dual BSD/GPLv2 license.  When using or
5  * redistributing this file, you may do so under either license.
6  *
7  * GPL LICENSE SUMMARY
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of version 2 of the GNU General Public License as
11  * published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but
14  * WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * General Public License for more details.
17  *
18  * BSD LICENSE
19  *
20  * Redistribution and use in source and binary forms, with or without
21  * modification, are permitted provided that the following conditions
22  * are met:
23  *
24  *  - Redistributions of source code must retain the above copyright
25  *    notice, this list of conditions and the following disclaimer.
26  *  - Redistributions in binary form must reproduce the above copyright
27  *    notice, this list of conditions and the following disclaimer in
28  *    the documentation and/or other materials provided with the
29  *    distribution.
30  *  - Neither the name of Intel Corporation nor the names of its
31  *    contributors may be used to endorse or promote products derived
32  *    from this software without specific prior written permission.
33  *
34  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  */
47 #define CREATE_TRACE_POINTS
48 #include "trace.h"
49 #include "exp_rcv.h"
50 #include "ipoib.h"
51 
52 static u8 __get_ib_hdr_len(struct ib_header *hdr)
53 {
54 	struct ib_other_headers *ohdr;
55 	u8 opcode;
56 
57 	if (ib_get_lnh(hdr) == HFI1_LRH_BTH)
58 		ohdr = &hdr->u.oth;
59 	else
60 		ohdr = &hdr->u.l.oth;
61 	opcode = ib_bth_get_opcode(ohdr);
62 	return hdr_len_by_opcode[opcode] == 0 ?
63 	       0 : hdr_len_by_opcode[opcode] - (12 + 8);
64 }
65 
66 static u8 __get_16b_hdr_len(struct hfi1_16b_header *hdr)
67 {
68 	struct ib_other_headers *ohdr = NULL;
69 	u8 opcode;
70 	u8 l4 = hfi1_16B_get_l4(hdr);
71 
72 	if (l4 == OPA_16B_L4_FM) {
73 		opcode = IB_OPCODE_UD_SEND_ONLY;
74 		return (8 + 8); /* No BTH */
75 	}
76 
77 	if (l4 == OPA_16B_L4_IB_LOCAL)
78 		ohdr = &hdr->u.oth;
79 	else
80 		ohdr = &hdr->u.l.oth;
81 
82 	opcode = ib_bth_get_opcode(ohdr);
83 	return hdr_len_by_opcode[opcode] == 0 ?
84 	       0 : hdr_len_by_opcode[opcode] - (12 + 8 + 8);
85 }
86 
87 u8 hfi1_trace_packet_hdr_len(struct hfi1_packet *packet)
88 {
89 	if (packet->etype != RHF_RCV_TYPE_BYPASS)
90 		return __get_ib_hdr_len(packet->hdr);
91 	else
92 		return __get_16b_hdr_len(packet->hdr);
93 }
94 
95 u8 hfi1_trace_opa_hdr_len(struct hfi1_opa_header *opa_hdr)
96 {
97 	if (!opa_hdr->hdr_type)
98 		return __get_ib_hdr_len(&opa_hdr->ibh);
99 	else
100 		return __get_16b_hdr_len(&opa_hdr->opah);
101 }
102 
103 const char *hfi1_trace_get_packet_l4_str(u8 l4)
104 {
105 	if (l4)
106 		return "16B";
107 	else
108 		return "9B";
109 }
110 
111 const char *hfi1_trace_get_packet_l2_str(u8 l2)
112 {
113 	switch (l2) {
114 	case 0:
115 		return "0";
116 	case 1:
117 		return "1";
118 	case 2:
119 		return "16B";
120 	case 3:
121 		return "9B";
122 	}
123 	return "";
124 }
125 
126 #define IMM_PRN  "imm:%d"
127 #define RETH_PRN "reth vaddr:0x%.16llx rkey:0x%.8x dlen:0x%.8x"
128 #define AETH_PRN "aeth syn:0x%.2x %s msn:0x%.8x"
129 #define DETH_PRN "deth qkey:0x%.8x sqpn:0x%.6x"
130 #define DETH_ENTROPY_PRN "deth qkey:0x%.8x sqpn:0x%.6x entropy:0x%.2x"
131 #define IETH_PRN "ieth rkey:0x%.8x"
132 #define ATOMICACKETH_PRN "origdata:%llx"
133 #define ATOMICETH_PRN "vaddr:0x%llx rkey:0x%.8x sdata:%llx cdata:%llx"
134 #define TID_RDMA_KDETH "kdeth0 0x%x kdeth1 0x%x"
135 #define TID_RDMA_KDETH_DATA "kdeth0 0x%x: kver %u sh %u intr %u tidctrl %u tid %x offset %x kdeth1 0x%x: jkey %x"
136 #define TID_READ_REQ_PRN "tid_flow_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
137 #define TID_READ_RSP_PRN "verbs_qp 0x%x"
138 #define TID_WRITE_REQ_PRN "original_qp 0x%x"
139 #define TID_WRITE_RSP_PRN "tid_flow_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
140 #define TID_WRITE_DATA_PRN "verbs_qp 0x%x"
141 #define TID_ACK_PRN "tid_flow_psn 0x%x verbs_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
142 #define TID_RESYNC_PRN "verbs_qp 0x%x"
143 
144 #define OP(transport, op) IB_OPCODE_## transport ## _ ## op
145 
146 static const char *parse_syndrome(u8 syndrome)
147 {
148 	switch (syndrome >> 5) {
149 	case 0:
150 		return "ACK";
151 	case 1:
152 		return "RNRNAK";
153 	case 3:
154 		return "NAK";
155 	}
156 	return "";
157 }
158 
159 void hfi1_trace_parse_9b_bth(struct ib_other_headers *ohdr,
160 			     u8 *ack, bool *becn, bool *fecn, u8 *mig,
161 			     u8 *se, u8 *pad, u8 *opcode, u8 *tver,
162 			     u16 *pkey, u32 *psn, u32 *qpn)
163 {
164 	*ack = ib_bth_get_ackreq(ohdr);
165 	*becn = ib_bth_get_becn(ohdr);
166 	*fecn = ib_bth_get_fecn(ohdr);
167 	*mig = ib_bth_get_migreq(ohdr);
168 	*se = ib_bth_get_se(ohdr);
169 	*pad = ib_bth_get_pad(ohdr);
170 	*opcode = ib_bth_get_opcode(ohdr);
171 	*tver = ib_bth_get_tver(ohdr);
172 	*pkey = ib_bth_get_pkey(ohdr);
173 	*psn = mask_psn(ib_bth_get_psn(ohdr));
174 	*qpn = ib_bth_get_qpn(ohdr);
175 }
176 
177 void hfi1_trace_parse_16b_bth(struct ib_other_headers *ohdr,
178 			      u8 *ack, u8 *mig, u8 *opcode,
179 			      u8 *pad, u8 *se, u8 *tver,
180 			      u32 *psn, u32 *qpn)
181 {
182 	*ack = ib_bth_get_ackreq(ohdr);
183 	*mig = ib_bth_get_migreq(ohdr);
184 	*opcode = ib_bth_get_opcode(ohdr);
185 	*pad = ib_bth_get_pad(ohdr);
186 	*se = ib_bth_get_se(ohdr);
187 	*tver = ib_bth_get_tver(ohdr);
188 	*psn = mask_psn(ib_bth_get_psn(ohdr));
189 	*qpn = ib_bth_get_qpn(ohdr);
190 }
191 
192 static u16 ib_get_len(const struct ib_header *hdr)
193 {
194 	return be16_to_cpu(hdr->lrh[2]);
195 }
196 
197 void hfi1_trace_parse_9b_hdr(struct ib_header *hdr, bool sc5,
198 			     u8 *lnh, u8 *lver, u8 *sl, u8 *sc,
199 			     u16 *len, u32 *dlid, u32 *slid)
200 {
201 	*lnh = ib_get_lnh(hdr);
202 	*lver = ib_get_lver(hdr);
203 	*sl = ib_get_sl(hdr);
204 	*sc = ib_get_sc(hdr) | (sc5 << 4);
205 	*len = ib_get_len(hdr);
206 	*dlid = ib_get_dlid(hdr);
207 	*slid = ib_get_slid(hdr);
208 }
209 
210 void hfi1_trace_parse_16b_hdr(struct hfi1_16b_header *hdr,
211 			      u8 *age, bool *becn, bool *fecn,
212 			      u8 *l4, u8 *rc, u8 *sc,
213 			      u16 *entropy, u16 *len, u16 *pkey,
214 			      u32 *dlid, u32 *slid)
215 {
216 	*age = hfi1_16B_get_age(hdr);
217 	*becn = hfi1_16B_get_becn(hdr);
218 	*fecn = hfi1_16B_get_fecn(hdr);
219 	*l4 = hfi1_16B_get_l4(hdr);
220 	*rc = hfi1_16B_get_rc(hdr);
221 	*sc = hfi1_16B_get_sc(hdr);
222 	*entropy = hfi1_16B_get_entropy(hdr);
223 	*len = hfi1_16B_get_len(hdr);
224 	*pkey = hfi1_16B_get_pkey(hdr);
225 	*dlid = hfi1_16B_get_dlid(hdr);
226 	*slid = hfi1_16B_get_slid(hdr);
227 }
228 
229 #define LRH_PRN "len:%d sc:%d dlid:0x%.4x slid:0x%.4x "
230 #define LRH_9B_PRN "lnh:%d,%s lver:%d sl:%d"
231 #define LRH_16B_PRN "age:%d becn:%d fecn:%d l4:%d " \
232 		    "rc:%d sc:%d pkey:0x%.4x entropy:0x%.4x"
233 const char *hfi1_trace_fmt_lrh(struct trace_seq *p, bool bypass,
234 			       u8 age, bool becn, bool fecn, u8 l4,
235 			       u8 lnh, const char *lnh_name, u8 lver,
236 			       u8 rc, u8 sc, u8 sl, u16 entropy,
237 			       u16 len, u16 pkey, u32 dlid, u32 slid)
238 {
239 	const char *ret = trace_seq_buffer_ptr(p);
240 
241 	trace_seq_printf(p, LRH_PRN, len, sc, dlid, slid);
242 
243 	if (bypass)
244 		trace_seq_printf(p, LRH_16B_PRN,
245 				 age, becn, fecn, l4, rc, sc, pkey, entropy);
246 
247 	else
248 		trace_seq_printf(p, LRH_9B_PRN,
249 				 lnh, lnh_name, lver, sl);
250 	trace_seq_putc(p, 0);
251 
252 	return ret;
253 }
254 
255 #define BTH_9B_PRN \
256 	"op:0x%.2x,%s se:%d m:%d pad:%d tver:%d pkey:0x%.4x " \
257 	"f:%d b:%d qpn:0x%.6x a:%d psn:0x%.8x"
258 #define BTH_16B_PRN \
259 	"op:0x%.2x,%s se:%d m:%d pad:%d tver:%d " \
260 	"qpn:0x%.6x a:%d psn:0x%.8x"
261 #define L4_FM_16B_PRN \
262 	"op:0x%.2x,%s dest_qpn:0x%.6x src_qpn:0x%.6x"
263 const char *hfi1_trace_fmt_rest(struct trace_seq *p, bool bypass, u8 l4,
264 				u8 ack, bool becn, bool fecn, u8 mig,
265 				u8 se, u8 pad, u8 opcode, const char *opname,
266 				u8 tver, u16 pkey, u32 psn, u32 qpn,
267 				u32 dest_qpn, u32 src_qpn)
268 {
269 	const char *ret = trace_seq_buffer_ptr(p);
270 
271 	if (bypass)
272 		if (l4 == OPA_16B_L4_FM)
273 			trace_seq_printf(p, L4_FM_16B_PRN,
274 					 opcode, opname, dest_qpn, src_qpn);
275 		else
276 			trace_seq_printf(p, BTH_16B_PRN,
277 					 opcode, opname,
278 					 se, mig, pad, tver, qpn, ack, psn);
279 
280 	else
281 		trace_seq_printf(p, BTH_9B_PRN,
282 				 opcode, opname,
283 				 se, mig, pad, tver, pkey, fecn, becn,
284 				 qpn, ack, psn);
285 	trace_seq_putc(p, 0);
286 
287 	return ret;
288 }
289 
290 const char *parse_everbs_hdrs(
291 	struct trace_seq *p,
292 	u8 opcode, u8 l4, u32 dest_qpn, u32 src_qpn,
293 	void *ehdrs)
294 {
295 	union ib_ehdrs *eh = ehdrs;
296 	const char *ret = trace_seq_buffer_ptr(p);
297 
298 	if (l4 == OPA_16B_L4_FM) {
299 		trace_seq_printf(p, "mgmt pkt");
300 		goto out;
301 	}
302 
303 	switch (opcode) {
304 	/* imm */
305 	case OP(RC, SEND_LAST_WITH_IMMEDIATE):
306 	case OP(UC, SEND_LAST_WITH_IMMEDIATE):
307 	case OP(RC, SEND_ONLY_WITH_IMMEDIATE):
308 	case OP(UC, SEND_ONLY_WITH_IMMEDIATE):
309 	case OP(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE):
310 	case OP(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE):
311 		trace_seq_printf(p, IMM_PRN,
312 				 be32_to_cpu(eh->imm_data));
313 		break;
314 	/* reth + imm */
315 	case OP(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE):
316 	case OP(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE):
317 		trace_seq_printf(p, RETH_PRN " " IMM_PRN,
318 				 get_ib_reth_vaddr(&eh->rc.reth),
319 				 be32_to_cpu(eh->rc.reth.rkey),
320 				 be32_to_cpu(eh->rc.reth.length),
321 				 be32_to_cpu(eh->rc.imm_data));
322 		break;
323 	/* reth */
324 	case OP(RC, RDMA_READ_REQUEST):
325 	case OP(RC, RDMA_WRITE_FIRST):
326 	case OP(UC, RDMA_WRITE_FIRST):
327 	case OP(RC, RDMA_WRITE_ONLY):
328 	case OP(UC, RDMA_WRITE_ONLY):
329 		trace_seq_printf(p, RETH_PRN,
330 				 get_ib_reth_vaddr(&eh->rc.reth),
331 				 be32_to_cpu(eh->rc.reth.rkey),
332 				 be32_to_cpu(eh->rc.reth.length));
333 		break;
334 	case OP(RC, RDMA_READ_RESPONSE_FIRST):
335 	case OP(RC, RDMA_READ_RESPONSE_LAST):
336 	case OP(RC, RDMA_READ_RESPONSE_ONLY):
337 	case OP(RC, ACKNOWLEDGE):
338 		trace_seq_printf(p, AETH_PRN, be32_to_cpu(eh->aeth) >> 24,
339 				 parse_syndrome(be32_to_cpu(eh->aeth) >> 24),
340 				 be32_to_cpu(eh->aeth) & IB_MSN_MASK);
341 		break;
342 	case OP(TID_RDMA, WRITE_REQ):
343 		trace_seq_printf(p, TID_RDMA_KDETH " " RETH_PRN " "
344 				 TID_WRITE_REQ_PRN,
345 				 le32_to_cpu(eh->tid_rdma.w_req.kdeth0),
346 				 le32_to_cpu(eh->tid_rdma.w_req.kdeth1),
347 				 ib_u64_get(&eh->tid_rdma.w_req.reth.vaddr),
348 				 be32_to_cpu(eh->tid_rdma.w_req.reth.rkey),
349 				 be32_to_cpu(eh->tid_rdma.w_req.reth.length),
350 				 be32_to_cpu(eh->tid_rdma.w_req.verbs_qp));
351 		break;
352 	case OP(TID_RDMA, WRITE_RESP):
353 		trace_seq_printf(p, TID_RDMA_KDETH " " AETH_PRN " "
354 				 TID_WRITE_RSP_PRN,
355 				 le32_to_cpu(eh->tid_rdma.w_rsp.kdeth0),
356 				 le32_to_cpu(eh->tid_rdma.w_rsp.kdeth1),
357 				 be32_to_cpu(eh->tid_rdma.w_rsp.aeth) >> 24,
358 				 parse_syndrome(/* aeth */
359 					 be32_to_cpu(eh->tid_rdma.w_rsp.aeth)
360 					 >> 24),
361 				 (be32_to_cpu(eh->tid_rdma.w_rsp.aeth) &
362 				  IB_MSN_MASK),
363 				 be32_to_cpu(eh->tid_rdma.w_rsp.tid_flow_psn),
364 				 be32_to_cpu(eh->tid_rdma.w_rsp.tid_flow_qp),
365 				 be32_to_cpu(eh->tid_rdma.w_rsp.verbs_qp));
366 		break;
367 	case OP(TID_RDMA, WRITE_DATA_LAST):
368 	case OP(TID_RDMA, WRITE_DATA):
369 		trace_seq_printf(p, TID_RDMA_KDETH_DATA " " TID_WRITE_DATA_PRN,
370 				 le32_to_cpu(eh->tid_rdma.w_data.kdeth0),
371 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, KVER),
372 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, SH),
373 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, INTR),
374 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, TIDCTRL),
375 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, TID),
376 				 KDETH_GET(eh->tid_rdma.w_data.kdeth0, OFFSET),
377 				 le32_to_cpu(eh->tid_rdma.w_data.kdeth1),
378 				 KDETH_GET(eh->tid_rdma.w_data.kdeth1, JKEY),
379 				 be32_to_cpu(eh->tid_rdma.w_data.verbs_qp));
380 		break;
381 	case OP(TID_RDMA, READ_REQ):
382 		trace_seq_printf(p, TID_RDMA_KDETH " " RETH_PRN " "
383 				 TID_READ_REQ_PRN,
384 				 le32_to_cpu(eh->tid_rdma.r_req.kdeth0),
385 				 le32_to_cpu(eh->tid_rdma.r_req.kdeth1),
386 				 ib_u64_get(&eh->tid_rdma.r_req.reth.vaddr),
387 				 be32_to_cpu(eh->tid_rdma.r_req.reth.rkey),
388 				 be32_to_cpu(eh->tid_rdma.r_req.reth.length),
389 				 be32_to_cpu(eh->tid_rdma.r_req.tid_flow_psn),
390 				 be32_to_cpu(eh->tid_rdma.r_req.tid_flow_qp),
391 				 be32_to_cpu(eh->tid_rdma.r_req.verbs_qp));
392 		break;
393 	case OP(TID_RDMA, READ_RESP):
394 		trace_seq_printf(p, TID_RDMA_KDETH_DATA " " AETH_PRN " "
395 				 TID_READ_RSP_PRN,
396 				 le32_to_cpu(eh->tid_rdma.r_rsp.kdeth0),
397 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, KVER),
398 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, SH),
399 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, INTR),
400 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, TIDCTRL),
401 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, TID),
402 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, OFFSET),
403 				 le32_to_cpu(eh->tid_rdma.r_rsp.kdeth1),
404 				 KDETH_GET(eh->tid_rdma.r_rsp.kdeth1, JKEY),
405 				 be32_to_cpu(eh->tid_rdma.r_rsp.aeth) >> 24,
406 				 parse_syndrome(/* aeth */
407 					 be32_to_cpu(eh->tid_rdma.r_rsp.aeth)
408 					 >> 24),
409 				 (be32_to_cpu(eh->tid_rdma.r_rsp.aeth) &
410 				  IB_MSN_MASK),
411 				 be32_to_cpu(eh->tid_rdma.r_rsp.verbs_qp));
412 		break;
413 	case OP(TID_RDMA, ACK):
414 		trace_seq_printf(p, TID_RDMA_KDETH " " AETH_PRN " "
415 				 TID_ACK_PRN,
416 				 le32_to_cpu(eh->tid_rdma.ack.kdeth0),
417 				 le32_to_cpu(eh->tid_rdma.ack.kdeth1),
418 				 be32_to_cpu(eh->tid_rdma.ack.aeth) >> 24,
419 				 parse_syndrome(/* aeth */
420 					 be32_to_cpu(eh->tid_rdma.ack.aeth)
421 					 >> 24),
422 				 (be32_to_cpu(eh->tid_rdma.ack.aeth) &
423 				  IB_MSN_MASK),
424 				 be32_to_cpu(eh->tid_rdma.ack.tid_flow_psn),
425 				 be32_to_cpu(eh->tid_rdma.ack.verbs_psn),
426 				 be32_to_cpu(eh->tid_rdma.ack.tid_flow_qp),
427 				 be32_to_cpu(eh->tid_rdma.ack.verbs_qp));
428 		break;
429 	case OP(TID_RDMA, RESYNC):
430 		trace_seq_printf(p, TID_RDMA_KDETH " " TID_RESYNC_PRN,
431 				 le32_to_cpu(eh->tid_rdma.resync.kdeth0),
432 				 le32_to_cpu(eh->tid_rdma.resync.kdeth1),
433 				 be32_to_cpu(eh->tid_rdma.resync.verbs_qp));
434 		break;
435 	/* aeth + atomicacketh */
436 	case OP(RC, ATOMIC_ACKNOWLEDGE):
437 		trace_seq_printf(p, AETH_PRN " " ATOMICACKETH_PRN,
438 				 be32_to_cpu(eh->at.aeth) >> 24,
439 				 parse_syndrome(be32_to_cpu(eh->at.aeth) >> 24),
440 				 be32_to_cpu(eh->at.aeth) & IB_MSN_MASK,
441 				 ib_u64_get(&eh->at.atomic_ack_eth));
442 		break;
443 	/* atomiceth */
444 	case OP(RC, COMPARE_SWAP):
445 	case OP(RC, FETCH_ADD):
446 		trace_seq_printf(p, ATOMICETH_PRN,
447 				 get_ib_ateth_vaddr(&eh->atomic_eth),
448 				 eh->atomic_eth.rkey,
449 				 get_ib_ateth_swap(&eh->atomic_eth),
450 				 get_ib_ateth_compare(&eh->atomic_eth));
451 		break;
452 	/* deth */
453 	case OP(UD, SEND_ONLY):
454 		trace_seq_printf(p, DETH_ENTROPY_PRN,
455 				 be32_to_cpu(eh->ud.deth[0]),
456 				 be32_to_cpu(eh->ud.deth[1]) & RVT_QPN_MASK,
457 				 be32_to_cpu(eh->ud.deth[1]) >>
458 					     HFI1_IPOIB_ENTROPY_SHIFT);
459 		break;
460 	case OP(UD, SEND_ONLY_WITH_IMMEDIATE):
461 		trace_seq_printf(p, DETH_PRN,
462 				 be32_to_cpu(eh->ud.deth[0]),
463 				 be32_to_cpu(eh->ud.deth[1]) & RVT_QPN_MASK);
464 		break;
465 	/* ieth */
466 	case OP(RC, SEND_LAST_WITH_INVALIDATE):
467 	case OP(RC, SEND_ONLY_WITH_INVALIDATE):
468 		trace_seq_printf(p, IETH_PRN,
469 				 be32_to_cpu(eh->ieth));
470 		break;
471 	}
472 out:
473 	trace_seq_putc(p, 0);
474 	return ret;
475 }
476 
477 const char *parse_sdma_flags(
478 	struct trace_seq *p,
479 	u64 desc0, u64 desc1)
480 {
481 	const char *ret = trace_seq_buffer_ptr(p);
482 	char flags[5] = { 'x', 'x', 'x', 'x', 0 };
483 
484 	flags[0] = (desc1 & SDMA_DESC1_INT_REQ_FLAG) ? 'I' : '-';
485 	flags[1] = (desc1 & SDMA_DESC1_HEAD_TO_HOST_FLAG) ?  'H' : '-';
486 	flags[2] = (desc0 & SDMA_DESC0_FIRST_DESC_FLAG) ? 'F' : '-';
487 	flags[3] = (desc0 & SDMA_DESC0_LAST_DESC_FLAG) ? 'L' : '-';
488 	trace_seq_printf(p, "%s", flags);
489 	if (desc0 & SDMA_DESC0_FIRST_DESC_FLAG)
490 		trace_seq_printf(p, " amode:%u aidx:%u alen:%u",
491 				 (u8)((desc1 >> SDMA_DESC1_HEADER_MODE_SHIFT) &
492 				      SDMA_DESC1_HEADER_MODE_MASK),
493 				 (u8)((desc1 >> SDMA_DESC1_HEADER_INDEX_SHIFT) &
494 				      SDMA_DESC1_HEADER_INDEX_MASK),
495 				 (u8)((desc1 >> SDMA_DESC1_HEADER_DWS_SHIFT) &
496 				      SDMA_DESC1_HEADER_DWS_MASK));
497 	return ret;
498 }
499 
500 const char *print_u32_array(
501 	struct trace_seq *p,
502 	u32 *arr, int len)
503 {
504 	int i;
505 	const char *ret = trace_seq_buffer_ptr(p);
506 
507 	for (i = 0; i < len ; i++)
508 		trace_seq_printf(p, "%s%#x", i == 0 ? "" : " ", arr[i]);
509 	trace_seq_putc(p, 0);
510 	return ret;
511 }
512 
513 u8 hfi1_trace_get_tid_ctrl(u32 ent)
514 {
515 	return EXP_TID_GET(ent, CTRL);
516 }
517 
518 u16 hfi1_trace_get_tid_len(u32 ent)
519 {
520 	return EXP_TID_GET(ent, LEN);
521 }
522 
523 u16 hfi1_trace_get_tid_idx(u32 ent)
524 {
525 	return EXP_TID_GET(ent, IDX);
526 }
527 
528 struct hfi1_ctxt_hist {
529 	atomic_t count;
530 	atomic_t data[255];
531 };
532 
533 struct hfi1_ctxt_hist hist = {
534 	.count = ATOMIC_INIT(0)
535 };
536 
537 const char *hfi1_trace_print_rsm_hist(struct trace_seq *p, unsigned int ctxt)
538 {
539 	int i, len = ARRAY_SIZE(hist.data);
540 	const char *ret = trace_seq_buffer_ptr(p);
541 	unsigned long packet_count = atomic_fetch_inc(&hist.count);
542 
543 	trace_seq_printf(p, "packet[%lu]", packet_count);
544 	for (i = 0; i < len; ++i) {
545 		unsigned long val;
546 		atomic_t *count = &hist.data[i];
547 
548 		if (ctxt == i)
549 			val = atomic_fetch_inc(count);
550 		else
551 			val = atomic_read(count);
552 
553 		if (val)
554 			trace_seq_printf(p, "(%d:%lu)", i, val);
555 	}
556 	trace_seq_putc(p, 0);
557 	return ret;
558 }
559 
560 __hfi1_trace_fn(AFFINITY);
561 __hfi1_trace_fn(PKT);
562 __hfi1_trace_fn(PROC);
563 __hfi1_trace_fn(SDMA);
564 __hfi1_trace_fn(LINKVERB);
565 __hfi1_trace_fn(DEBUG);
566 __hfi1_trace_fn(SNOOP);
567 __hfi1_trace_fn(CNTR);
568 __hfi1_trace_fn(PIO);
569 __hfi1_trace_fn(DC8051);
570 __hfi1_trace_fn(FIRMWARE);
571 __hfi1_trace_fn(RCVCTRL);
572 __hfi1_trace_fn(TID);
573 __hfi1_trace_fn(MMU);
574 __hfi1_trace_fn(IOCTL);
575