drivers/infiniband/hw/hfi1/trace.c

   1 // SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
   2 /*
   3  * Copyright(c) 2015 - 2020 Intel Corporation.
   4  */
   5 #define CREATE_TRACE_POINTS
   6 #include "trace.h"
   7 #include "exp_rcv.h"
   8 #include "ipoib.h"
   9
  10 static u8 __get_ib_hdr_len(struct ib_header *hdr)
  11 {
  12         struct ib_other_headers *ohdr;
  13         u8 opcode;
  14
  15         if (ib_get_lnh(hdr) == HFI1_LRH_BTH)
  16                 ohdr = &hdr->u.oth;
  17         else
  18                 ohdr = &hdr->u.l.oth;
  19         opcode = ib_bth_get_opcode(ohdr);
  20         return hdr_len_by_opcode[opcode] == 0 ?
  21                0 : hdr_len_by_opcode[opcode] - (12 + 8);
  22 }
  23
  24 static u8 __get_16b_hdr_len(struct hfi1_16b_header *hdr)
  25 {
  26         struct ib_other_headers *ohdr = NULL;
  27         u8 opcode;
  28         u8 l4 = hfi1_16B_get_l4(hdr);
  29
  30         if (l4 == OPA_16B_L4_FM) {
  31                 opcode = IB_OPCODE_UD_SEND_ONLY;
  32                 return (8 + 8); /* No BTH */
  33         }
  34
  35         if (l4 == OPA_16B_L4_IB_LOCAL)
  36                 ohdr = &hdr->u.oth;
  37         else
  38                 ohdr = &hdr->u.l.oth;
  39
  40         opcode = ib_bth_get_opcode(ohdr);
  41         return hdr_len_by_opcode[opcode] == 0 ?
  42                0 : hdr_len_by_opcode[opcode] - (12 + 8 + 8);
  43 }
  44
  45 u8 hfi1_trace_packet_hdr_len(struct hfi1_packet *packet)
  46 {
  47         if (packet->etype != RHF_RCV_TYPE_BYPASS)
  48                 return __get_ib_hdr_len(packet->hdr);
  49         else
  50                 return __get_16b_hdr_len(packet->hdr);
  51 }
  52
  53 u8 hfi1_trace_opa_hdr_len(struct hfi1_opa_header *opa_hdr)
  54 {
  55         if (!opa_hdr->hdr_type)
  56                 return __get_ib_hdr_len(&opa_hdr->ibh);
  57         else
  58                 return __get_16b_hdr_len(&opa_hdr->opah);
  59 }
  60
  61 const char *hfi1_trace_get_packet_l4_str(u8 l4)
  62 {
  63         if (l4)
  64                 return "16B";
  65         else
  66                 return "9B";
  67 }
  68
  69 const char *hfi1_trace_get_packet_l2_str(u8 l2)
  70 {
  71         switch (l2) {
  72         case 0:
  73                 return "0";
  74         case 1:
  75                 return "1";
  76         case 2:
  77                 return "16B";
  78         case 3:
  79                 return "9B";
  80         }
  81         return "";
  82 }
  83
  84 #define IMM_PRN  "imm:%d"
  85 #define RETH_PRN "reth vaddr:0x%.16llx rkey:0x%.8x dlen:0x%.8x"
  86 #define AETH_PRN "aeth syn:0x%.2x %s msn:0x%.8x"
  87 #define DETH_PRN "deth qkey:0x%.8x sqpn:0x%.6x"
  88 #define DETH_ENTROPY_PRN "deth qkey:0x%.8x sqpn:0x%.6x entropy:0x%.2x"
  89 #define IETH_PRN "ieth rkey:0x%.8x"
  90 #define ATOMICACKETH_PRN "origdata:%llx"
  91 #define ATOMICETH_PRN "vaddr:0x%llx rkey:0x%.8x sdata:%llx cdata:%llx"
  92 #define TID_RDMA_KDETH "kdeth0 0x%x kdeth1 0x%x"
  93 #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"
  94 #define TID_READ_REQ_PRN "tid_flow_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
  95 #define TID_READ_RSP_PRN "verbs_qp 0x%x"
  96 #define TID_WRITE_REQ_PRN "original_qp 0x%x"
  97 #define TID_WRITE_RSP_PRN "tid_flow_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
  98 #define TID_WRITE_DATA_PRN "verbs_qp 0x%x"
  99 #define TID_ACK_PRN "tid_flow_psn 0x%x verbs_psn 0x%x tid_flow_qp 0x%x verbs_qp 0x%x"
 100 #define TID_RESYNC_PRN "verbs_qp 0x%x"
 101
 102 #define OP(transport, op) IB_OPCODE_## transport ## _ ## op
 103
 104 static const char *parse_syndrome(u8 syndrome)
 105 {
 106         switch (syndrome >> 5) {
 107         case 0:
 108                 return "ACK";
 109         case 1:
 110                 return "RNRNAK";
 111         case 3:
 112                 return "NAK";
 113         }
 114         return "";
 115 }
 116
 117 void hfi1_trace_parse_9b_bth(struct ib_other_headers *ohdr,
 118                              u8 *ack, bool *becn, bool *fecn, u8 *mig,
 119                              u8 *se, u8 *pad, u8 *opcode, u8 *tver,
 120                              u16 *pkey, u32 *psn, u32 *qpn)
 121 {
 122         *ack = ib_bth_get_ackreq(ohdr);
 123         *becn = ib_bth_get_becn(ohdr);
 124         *fecn = ib_bth_get_fecn(ohdr);
 125         *mig = ib_bth_get_migreq(ohdr);
 126         *se = ib_bth_get_se(ohdr);
 127         *pad = ib_bth_get_pad(ohdr);
 128         *opcode = ib_bth_get_opcode(ohdr);
 129         *tver = ib_bth_get_tver(ohdr);
 130         *pkey = ib_bth_get_pkey(ohdr);
 131         *psn = mask_psn(ib_bth_get_psn(ohdr));
 132         *qpn = ib_bth_get_qpn(ohdr);
 133 }
 134
 135 void hfi1_trace_parse_16b_bth(struct ib_other_headers *ohdr,
 136                               u8 *ack, u8 *mig, u8 *opcode,
 137                               u8 *pad, u8 *se, u8 *tver,
 138                               u32 *psn, u32 *qpn)
 139 {
 140         *ack = ib_bth_get_ackreq(ohdr);
 141         *mig = ib_bth_get_migreq(ohdr);
 142         *opcode = ib_bth_get_opcode(ohdr);
 143         *pad = ib_bth_get_pad(ohdr);
 144         *se = ib_bth_get_se(ohdr);
 145         *tver = ib_bth_get_tver(ohdr);
 146         *psn = mask_psn(ib_bth_get_psn(ohdr));
 147         *qpn = ib_bth_get_qpn(ohdr);
 148 }
 149
 150 static u16 ib_get_len(const struct ib_header *hdr)
 151 {
 152         return be16_to_cpu(hdr->lrh[2]);
 153 }
 154
 155 void hfi1_trace_parse_9b_hdr(struct ib_header *hdr, bool sc5,
 156                              u8 *lnh, u8 *lver, u8 *sl, u8 *sc,
 157                              u16 *len, u32 *dlid, u32 *slid)
 158 {
 159         *lnh = ib_get_lnh(hdr);
 160         *lver = ib_get_lver(hdr);
 161         *sl = ib_get_sl(hdr);
 162         *sc = ib_get_sc(hdr) | (sc5 << 4);
 163         *len = ib_get_len(hdr);
 164         *dlid = ib_get_dlid(hdr);
 165         *slid = ib_get_slid(hdr);
 166 }
 167
 168 void hfi1_trace_parse_16b_hdr(struct hfi1_16b_header *hdr,
 169                               u8 *age, bool *becn, bool *fecn,
 170                               u8 *l4, u8 *rc, u8 *sc,
 171                               u16 *entropy, u16 *len, u16 *pkey,
 172                               u32 *dlid, u32 *slid)
 173 {
 174         *age = hfi1_16B_get_age(hdr);
 175         *becn = hfi1_16B_get_becn(hdr);
 176         *fecn = hfi1_16B_get_fecn(hdr);
 177         *l4 = hfi1_16B_get_l4(hdr);
 178         *rc = hfi1_16B_get_rc(hdr);
 179         *sc = hfi1_16B_get_sc(hdr);
 180         *entropy = hfi1_16B_get_entropy(hdr);
 181         *len = hfi1_16B_get_len(hdr);
 182         *pkey = hfi1_16B_get_pkey(hdr);
 183         *dlid = hfi1_16B_get_dlid(hdr);
 184         *slid = hfi1_16B_get_slid(hdr);
 185 }
 186
 187 #define LRH_PRN "len:%d sc:%d dlid:0x%.4x slid:0x%.4x "
 188 #define LRH_9B_PRN "lnh:%d,%s lver:%d sl:%d"
 189 #define LRH_16B_PRN "age:%d becn:%d fecn:%d l4:%d " \
 190                     "rc:%d sc:%d pkey:0x%.4x entropy:0x%.4x"
 191 const char *hfi1_trace_fmt_lrh(struct trace_seq *p, bool bypass,
 192                                u8 age, bool becn, bool fecn, u8 l4,
 193                                u8 lnh, const char *lnh_name, u8 lver,
 194                                u8 rc, u8 sc, u8 sl, u16 entropy,
 195                                u16 len, u16 pkey, u32 dlid, u32 slid)
 196 {
 197         const char *ret = trace_seq_buffer_ptr(p);
 198
 199         trace_seq_printf(p, LRH_PRN, len, sc, dlid, slid);
 200
 201         if (bypass)
 202                 trace_seq_printf(p, LRH_16B_PRN,
 203                                  age, becn, fecn, l4, rc, sc, pkey, entropy);
 204
 205         else
 206                 trace_seq_printf(p, LRH_9B_PRN,
 207                                  lnh, lnh_name, lver, sl);
 208         trace_seq_putc(p, 0);
 209
 210         return ret;
 211 }
 212
 213 #define BTH_9B_PRN \
 214         "op:0x%.2x,%s se:%d m:%d pad:%d tver:%d pkey:0x%.4x " \
 215         "f:%d b:%d qpn:0x%.6x a:%d psn:0x%.8x"
 216 #define BTH_16B_PRN \
 217         "op:0x%.2x,%s se:%d m:%d pad:%d tver:%d " \
 218         "qpn:0x%.6x a:%d psn:0x%.8x"
 219 #define L4_FM_16B_PRN \
 220         "op:0x%.2x,%s dest_qpn:0x%.6x src_qpn:0x%.6x"
 221 const char *hfi1_trace_fmt_rest(struct trace_seq *p, bool bypass, u8 l4,
 222                                 u8 ack, bool becn, bool fecn, u8 mig,
 223                                 u8 se, u8 pad, u8 opcode, const char *opname,
 224                                 u8 tver, u16 pkey, u32 psn, u32 qpn,
 225                                 u32 dest_qpn, u32 src_qpn)
 226 {
 227         const char *ret = trace_seq_buffer_ptr(p);
 228
 229         if (bypass)
 230                 if (l4 == OPA_16B_L4_FM)
 231                         trace_seq_printf(p, L4_FM_16B_PRN,
 232                                          opcode, opname, dest_qpn, src_qpn);
 233                 else
 234                         trace_seq_printf(p, BTH_16B_PRN,
 235                                          opcode, opname,
 236                                          se, mig, pad, tver, qpn, ack, psn);
 237
 238         else
 239                 trace_seq_printf(p, BTH_9B_PRN,
 240                                  opcode, opname,
 241                                  se, mig, pad, tver, pkey, fecn, becn,
 242                                  qpn, ack, psn);
 243         trace_seq_putc(p, 0);
 244
 245         return ret;
 246 }
 247
 248 const char *parse_everbs_hdrs(
 249         struct trace_seq *p,
 250         u8 opcode, u8 l4, u32 dest_qpn, u32 src_qpn,
 251         void *ehdrs)
 252 {
 253         union ib_ehdrs *eh = ehdrs;
 254         const char *ret = trace_seq_buffer_ptr(p);
 255
 256         if (l4 == OPA_16B_L4_FM) {
 257                 trace_seq_printf(p, "mgmt pkt");
 258                 goto out;
 259         }
 260
 261         switch (opcode) {
 262         /* imm */
 263         case OP(RC, SEND_LAST_WITH_IMMEDIATE):
 264         case OP(UC, SEND_LAST_WITH_IMMEDIATE):
 265         case OP(RC, SEND_ONLY_WITH_IMMEDIATE):
 266         case OP(UC, SEND_ONLY_WITH_IMMEDIATE):
 267         case OP(RC, RDMA_WRITE_LAST_WITH_IMMEDIATE):
 268         case OP(UC, RDMA_WRITE_LAST_WITH_IMMEDIATE):
 269                 trace_seq_printf(p, IMM_PRN,
 270                                  be32_to_cpu(eh->imm_data));
 271                 break;
 272         /* reth + imm */
 273         case OP(RC, RDMA_WRITE_ONLY_WITH_IMMEDIATE):
 274         case OP(UC, RDMA_WRITE_ONLY_WITH_IMMEDIATE):
 275                 trace_seq_printf(p, RETH_PRN " " IMM_PRN,
 276                                  get_ib_reth_vaddr(&eh->rc.reth),
 277                                  be32_to_cpu(eh->rc.reth.rkey),
 278                                  be32_to_cpu(eh->rc.reth.length),
 279                                  be32_to_cpu(eh->rc.imm_data));
 280                 break;
 281         /* reth */
 282         case OP(RC, RDMA_READ_REQUEST):
 283         case OP(RC, RDMA_WRITE_FIRST):
 284         case OP(UC, RDMA_WRITE_FIRST):
 285         case OP(RC, RDMA_WRITE_ONLY):
 286         case OP(UC, RDMA_WRITE_ONLY):
 287                 trace_seq_printf(p, RETH_PRN,
 288                                  get_ib_reth_vaddr(&eh->rc.reth),
 289                                  be32_to_cpu(eh->rc.reth.rkey),
 290                                  be32_to_cpu(eh->rc.reth.length));
 291                 break;
 292         case OP(RC, RDMA_READ_RESPONSE_FIRST):
 293         case OP(RC, RDMA_READ_RESPONSE_LAST):
 294         case OP(RC, RDMA_READ_RESPONSE_ONLY):
 295         case OP(RC, ACKNOWLEDGE):
 296                 trace_seq_printf(p, AETH_PRN, be32_to_cpu(eh->aeth) >> 24,
 297                                  parse_syndrome(be32_to_cpu(eh->aeth) >> 24),
 298                                  be32_to_cpu(eh->aeth) & IB_MSN_MASK);
 299                 break;
 300         case OP(TID_RDMA, WRITE_REQ):
 301                 trace_seq_printf(p, TID_RDMA_KDETH " " RETH_PRN " "
 302                                  TID_WRITE_REQ_PRN,
 303                                  le32_to_cpu(eh->tid_rdma.w_req.kdeth0),
 304                                  le32_to_cpu(eh->tid_rdma.w_req.kdeth1),
 305                                  ib_u64_get(&eh->tid_rdma.w_req.reth.vaddr),
 306                                  be32_to_cpu(eh->tid_rdma.w_req.reth.rkey),
 307                                  be32_to_cpu(eh->tid_rdma.w_req.reth.length),
 308                                  be32_to_cpu(eh->tid_rdma.w_req.verbs_qp));
 309                 break;
 310         case OP(TID_RDMA, WRITE_RESP):
 311                 trace_seq_printf(p, TID_RDMA_KDETH " " AETH_PRN " "
 312                                  TID_WRITE_RSP_PRN,
 313                                  le32_to_cpu(eh->tid_rdma.w_rsp.kdeth0),
 314                                  le32_to_cpu(eh->tid_rdma.w_rsp.kdeth1),
 315                                  be32_to_cpu(eh->tid_rdma.w_rsp.aeth) >> 24,
 316                                  parse_syndrome(/* aeth */
 317                                          be32_to_cpu(eh->tid_rdma.w_rsp.aeth)
 318                                          >> 24),
 319                                  (be32_to_cpu(eh->tid_rdma.w_rsp.aeth) &
 320                                   IB_MSN_MASK),
 321                                  be32_to_cpu(eh->tid_rdma.w_rsp.tid_flow_psn),
 322                                  be32_to_cpu(eh->tid_rdma.w_rsp.tid_flow_qp),
 323                                  be32_to_cpu(eh->tid_rdma.w_rsp.verbs_qp));
 324                 break;
 325         case OP(TID_RDMA, WRITE_DATA_LAST):
 326         case OP(TID_RDMA, WRITE_DATA):
 327                 trace_seq_printf(p, TID_RDMA_KDETH_DATA " " TID_WRITE_DATA_PRN,
 328                                  le32_to_cpu(eh->tid_rdma.w_data.kdeth0),
 329                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, KVER),
 330                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, SH),
 331                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, INTR),
 332                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, TIDCTRL),
 333                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, TID),
 334                                  KDETH_GET(eh->tid_rdma.w_data.kdeth0, OFFSET),
 335                                  le32_to_cpu(eh->tid_rdma.w_data.kdeth1),
 336                                  KDETH_GET(eh->tid_rdma.w_data.kdeth1, JKEY),
 337                                  be32_to_cpu(eh->tid_rdma.w_data.verbs_qp));
 338                 break;
 339         case OP(TID_RDMA, READ_REQ):
 340                 trace_seq_printf(p, TID_RDMA_KDETH " " RETH_PRN " "
 341                                  TID_READ_REQ_PRN,
 342                                  le32_to_cpu(eh->tid_rdma.r_req.kdeth0),
 343                                  le32_to_cpu(eh->tid_rdma.r_req.kdeth1),
 344                                  ib_u64_get(&eh->tid_rdma.r_req.reth.vaddr),
 345                                  be32_to_cpu(eh->tid_rdma.r_req.reth.rkey),
 346                                  be32_to_cpu(eh->tid_rdma.r_req.reth.length),
 347                                  be32_to_cpu(eh->tid_rdma.r_req.tid_flow_psn),
 348                                  be32_to_cpu(eh->tid_rdma.r_req.tid_flow_qp),
 349                                  be32_to_cpu(eh->tid_rdma.r_req.verbs_qp));
 350                 break;
 351         case OP(TID_RDMA, READ_RESP):
 352                 trace_seq_printf(p, TID_RDMA_KDETH_DATA " " AETH_PRN " "
 353                                  TID_READ_RSP_PRN,
 354                                  le32_to_cpu(eh->tid_rdma.r_rsp.kdeth0),
 355                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, KVER),
 356                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, SH),
 357                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, INTR),
 358                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, TIDCTRL),
 359                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, TID),
 360                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth0, OFFSET),
 361                                  le32_to_cpu(eh->tid_rdma.r_rsp.kdeth1),
 362                                  KDETH_GET(eh->tid_rdma.r_rsp.kdeth1, JKEY),
 363                                  be32_to_cpu(eh->tid_rdma.r_rsp.aeth) >> 24,
 364                                  parse_syndrome(/* aeth */
 365                                          be32_to_cpu(eh->tid_rdma.r_rsp.aeth)
 366                                          >> 24),
 367                                  (be32_to_cpu(eh->tid_rdma.r_rsp.aeth) &
 368                                   IB_MSN_MASK),
 369                                  be32_to_cpu(eh->tid_rdma.r_rsp.verbs_qp));
 370                 break;
 371         case OP(TID_RDMA, ACK):
 372                 trace_seq_printf(p, TID_RDMA_KDETH " " AETH_PRN " "
 373                                  TID_ACK_PRN,
 374                                  le32_to_cpu(eh->tid_rdma.ack.kdeth0),
 375                                  le32_to_cpu(eh->tid_rdma.ack.kdeth1),
 376                                  be32_to_cpu(eh->tid_rdma.ack.aeth) >> 24,
 377                                  parse_syndrome(/* aeth */
 378                                          be32_to_cpu(eh->tid_rdma.ack.aeth)
 379                                          >> 24),
 380                                  (be32_to_cpu(eh->tid_rdma.ack.aeth) &
 381                                   IB_MSN_MASK),
 382                                  be32_to_cpu(eh->tid_rdma.ack.tid_flow_psn),
 383                                  be32_to_cpu(eh->tid_rdma.ack.verbs_psn),
 384                                  be32_to_cpu(eh->tid_rdma.ack.tid_flow_qp),
 385                                  be32_to_cpu(eh->tid_rdma.ack.verbs_qp));
 386                 break;
 387         case OP(TID_RDMA, RESYNC):
 388                 trace_seq_printf(p, TID_RDMA_KDETH " " TID_RESYNC_PRN,
 389                                  le32_to_cpu(eh->tid_rdma.resync.kdeth0),
 390                                  le32_to_cpu(eh->tid_rdma.resync.kdeth1),
 391                                  be32_to_cpu(eh->tid_rdma.resync.verbs_qp));
 392                 break;
 393         /* aeth + atomicacketh */
 394         case OP(RC, ATOMIC_ACKNOWLEDGE):
 395                 trace_seq_printf(p, AETH_PRN " " ATOMICACKETH_PRN,
 396                                  be32_to_cpu(eh->at.aeth) >> 24,
 397                                  parse_syndrome(be32_to_cpu(eh->at.aeth) >> 24),
 398                                  be32_to_cpu(eh->at.aeth) & IB_MSN_MASK,
 399                                  ib_u64_get(&eh->at.atomic_ack_eth));
 400                 break;
 401         /* atomiceth */
 402         case OP(RC, COMPARE_SWAP):
 403         case OP(RC, FETCH_ADD):
 404                 trace_seq_printf(p, ATOMICETH_PRN,
 405                                  get_ib_ateth_vaddr(&eh->atomic_eth),
 406                                  eh->atomic_eth.rkey,
 407                                  get_ib_ateth_swap(&eh->atomic_eth),
 408                                  get_ib_ateth_compare(&eh->atomic_eth));
 409                 break;
 410         /* deth */
 411         case OP(UD, SEND_ONLY):
 412                 trace_seq_printf(p, DETH_ENTROPY_PRN,
 413                                  be32_to_cpu(eh->ud.deth[0]),
 414                                  be32_to_cpu(eh->ud.deth[1]) & RVT_QPN_MASK,
 415                                  be32_to_cpu(eh->ud.deth[1]) >>
 416                                              HFI1_IPOIB_ENTROPY_SHIFT);
 417                 break;
 418         case OP(UD, SEND_ONLY_WITH_IMMEDIATE):
 419                 trace_seq_printf(p, DETH_PRN,
 420                                  be32_to_cpu(eh->ud.deth[0]),
 421                                  be32_to_cpu(eh->ud.deth[1]) & RVT_QPN_MASK);
 422                 break;
 423         /* ieth */
 424         case OP(RC, SEND_LAST_WITH_INVALIDATE):
 425         case OP(RC, SEND_ONLY_WITH_INVALIDATE):
 426                 trace_seq_printf(p, IETH_PRN,
 427                                  be32_to_cpu(eh->ieth));
 428                 break;
 429         }
 430 out:
 431         trace_seq_putc(p, 0);
 432         return ret;
 433 }
 434
 435 const char *parse_sdma_flags(
 436         struct trace_seq *p,
 437         u64 desc0, u64 desc1)
 438 {
 439         const char *ret = trace_seq_buffer_ptr(p);
 440         char flags[5] = { 'x', 'x', 'x', 'x', 0 };
 441
 442         flags[0] = (desc1 & SDMA_DESC1_INT_REQ_FLAG) ? 'I' : '-';
 443         flags[1] = (desc1 & SDMA_DESC1_HEAD_TO_HOST_FLAG) ?  'H' : '-';
 444         flags[2] = (desc0 & SDMA_DESC0_FIRST_DESC_FLAG) ? 'F' : '-';
 445         flags[3] = (desc0 & SDMA_DESC0_LAST_DESC_FLAG) ? 'L' : '-';
 446         trace_seq_printf(p, "%s", flags);
 447         if (desc0 & SDMA_DESC0_FIRST_DESC_FLAG)
 448                 trace_seq_printf(p, " amode:%u aidx:%u alen:%u",
 449                                  (u8)((desc1 >> SDMA_DESC1_HEADER_MODE_SHIFT) &
 450                                       SDMA_DESC1_HEADER_MODE_MASK),
 451                                  (u8)((desc1 >> SDMA_DESC1_HEADER_INDEX_SHIFT) &
 452                                       SDMA_DESC1_HEADER_INDEX_MASK),
 453                                  (u8)((desc1 >> SDMA_DESC1_HEADER_DWS_SHIFT) &
 454                                       SDMA_DESC1_HEADER_DWS_MASK));
 455         return ret;
 456 }
 457
 458 const char *print_u32_array(
 459         struct trace_seq *p,
 460         u32 *arr, int len)
 461 {
 462         int i;
 463         const char *ret = trace_seq_buffer_ptr(p);
 464
 465         for (i = 0; i < len ; i++)
 466                 trace_seq_printf(p, "%s%#x", i == 0 ? "" : " ", arr[i]);
 467         trace_seq_putc(p, 0);
 468         return ret;
 469 }
 470
 471 u8 hfi1_trace_get_tid_ctrl(u32 ent)
 472 {
 473         return EXP_TID_GET(ent, CTRL);
 474 }
 475
 476 u16 hfi1_trace_get_tid_len(u32 ent)
 477 {
 478         return EXP_TID_GET(ent, LEN);
 479 }
 480
 481 u16 hfi1_trace_get_tid_idx(u32 ent)
 482 {
 483         return EXP_TID_GET(ent, IDX);
 484 }
 485
 486 struct hfi1_ctxt_hist {
 487         atomic_t count;
 488         atomic_t data[255];
 489 };
 490
 491 static struct hfi1_ctxt_hist hist = {
 492         .count = ATOMIC_INIT(0)
 493 };
 494
 495 const char *hfi1_trace_print_rsm_hist(struct trace_seq *p, unsigned int ctxt)
 496 {
 497         int i, len = ARRAY_SIZE(hist.data);
 498         const char *ret = trace_seq_buffer_ptr(p);
 499         unsigned long packet_count = atomic_fetch_inc(&hist.count);
 500
 501         trace_seq_printf(p, "packet[%lu]", packet_count);
 502         for (i = 0; i < len; ++i) {
 503                 unsigned long val;
 504                 atomic_t *count = &hist.data[i];
 505
 506                 if (ctxt == i)
 507                         val = atomic_fetch_inc(count);
 508                 else
 509                         val = atomic_read(count);
 510
 511                 if (val)
 512                         trace_seq_printf(p, "(%d:%lu)", i, val);
 513         }
 514         trace_seq_putc(p, 0);
 515         return ret;
 516 }
 517
 518 __hfi1_trace_fn(AFFINITY);
 519 __hfi1_trace_fn(PKT);
 520 __hfi1_trace_fn(PROC);
 521 __hfi1_trace_fn(SDMA);
 522 __hfi1_trace_fn(LINKVERB);
 523 __hfi1_trace_fn(DEBUG);
 524 __hfi1_trace_fn(SNOOP);
 525 __hfi1_trace_fn(CNTR);
 526 __hfi1_trace_fn(PIO);
 527 __hfi1_trace_fn(DC8051);
 528 __hfi1_trace_fn(FIRMWARE);
 529 __hfi1_trace_fn(RCVCTRL);
 530 __hfi1_trace_fn(TID);
 531 __hfi1_trace_fn(MMU);
 532 __hfi1_trace_fn(IOCTL);