sys/dev/bnxt/bnxt_txrx.c

   1 /*-
   2  * Broadcom NetXtreme-C/E network driver.
   3  *
   4  * Copyright (c) 2016 Broadcom, All Rights Reserved.
   5  * The term Broadcom refers to Broadcom Limited and/or its subsidiaries
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS'
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  26  * THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <sys/endian.h>
  35 #include <net/if.h>
  36 #include <net/if_var.h>
  37 #include <net/ethernet.h>
  38 #include <net/iflib.h>
  39
  40 #include "opt_inet.h"
  41 #include "opt_inet6.h"
  42 #include "opt_rss.h"
  43
  44 #include "bnxt.h"
  45
  46 /*
  47  * Function prototypes
  48  */
  49
  50 static int bnxt_isc_txd_encap(void *sc, if_pkt_info_t pi);
  51 static void bnxt_isc_txd_flush(void *sc, uint16_t txqid, qidx_t pidx);
  52 static int bnxt_isc_txd_credits_update(void *sc, uint16_t txqid, bool clear);
  53
  54 static void bnxt_isc_rxd_refill(void *sc, if_rxd_update_t iru);
  55
  56 /*                              uint16_t rxqid, uint8_t flid,
  57     uint32_t pidx, uint64_t *paddrs, caddr_t *vaddrs, uint16_t count,
  58     uint16_t buf_size);
  59 */
  60 static void bnxt_isc_rxd_flush(void *sc, uint16_t rxqid, uint8_t flid,
  61     qidx_t pidx);
  62 static int bnxt_isc_rxd_available(void *sc, uint16_t rxqid, qidx_t idx,
  63     qidx_t budget);
  64 static int bnxt_isc_rxd_pkt_get(void *sc, if_rxd_info_t ri);
  65
  66 static int bnxt_intr(void *sc);
  67
  68 struct if_txrx bnxt_txrx  = {
  69         bnxt_isc_txd_encap,
  70         bnxt_isc_txd_flush,
  71         bnxt_isc_txd_credits_update,
  72         bnxt_isc_rxd_available,
  73         bnxt_isc_rxd_pkt_get,
  74         bnxt_isc_rxd_refill,
  75         bnxt_isc_rxd_flush,
  76         bnxt_intr
  77 };
  78
  79 /*
  80  * Device Dependent Packet Transmit and Receive Functions
  81  */
  82
  83 static const uint16_t bnxt_tx_lhint[] = {
  84         TX_BD_SHORT_FLAGS_LHINT_LT512,
  85         TX_BD_SHORT_FLAGS_LHINT_LT1K,
  86         TX_BD_SHORT_FLAGS_LHINT_LT2K,
  87         TX_BD_SHORT_FLAGS_LHINT_LT2K,
  88         TX_BD_SHORT_FLAGS_LHINT_GTE2K,
  89 };
  90
  91 static int
  92 bnxt_isc_txd_encap(void *sc, if_pkt_info_t pi)
  93 {
  94         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
  95         struct bnxt_ring *txr = &softc->tx_rings[pi->ipi_qsidx];
  96         struct tx_bd_long *tbd;
  97         struct tx_bd_long_hi *tbdh;
  98         bool need_hi = false;
  99         uint16_t flags_type;
 100         uint16_t lflags;
 101         uint32_t cfa_meta;
 102         int seg = 0;
 103
 104         /* If we have offloads enabled, we need to use two BDs. */
 105         if ((pi->ipi_csum_flags & (CSUM_OFFLOAD | CSUM_TSO | CSUM_IP)) ||
 106             pi->ipi_mflags & M_VLANTAG)
 107                 need_hi = true;
 108
 109         /* TODO: Devices before Cu+B1 need to not mix long and short BDs */
 110         need_hi = true;
 111
 112         pi->ipi_new_pidx = pi->ipi_pidx;
 113         tbd = &((struct tx_bd_long *)txr->vaddr)[pi->ipi_new_pidx];
 114         pi->ipi_ndescs = 0;
 115         /* No need to byte-swap the opaque value */
 116         tbd->opaque = ((pi->ipi_nsegs + need_hi) << 24) | pi->ipi_new_pidx;
 117         tbd->len = htole16(pi->ipi_segs[seg].ds_len);
 118         tbd->addr = htole64(pi->ipi_segs[seg++].ds_addr);
 119         flags_type = ((pi->ipi_nsegs + need_hi) <<
 120             TX_BD_SHORT_FLAGS_BD_CNT_SFT) & TX_BD_SHORT_FLAGS_BD_CNT_MASK;
 121         if (pi->ipi_len >= 2048)
 122                 flags_type |= TX_BD_SHORT_FLAGS_LHINT_GTE2K;
 123         else
 124                 flags_type |= bnxt_tx_lhint[pi->ipi_len >> 9];
 125
 126         if (need_hi) {
 127                 flags_type |= TX_BD_LONG_TYPE_TX_BD_LONG;
 128
 129                 pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
 130                 tbdh = &((struct tx_bd_long_hi *)txr->vaddr)[pi->ipi_new_pidx];
 131                 tbdh->mss = htole16(pi->ipi_tso_segsz);
 132                 tbdh->hdr_size = htole16((pi->ipi_ehdrlen + pi->ipi_ip_hlen +
 133                     pi->ipi_tcp_hlen) >> 1);
 134                 tbdh->cfa_action = 0;
 135                 lflags = 0;
 136                 cfa_meta = 0;
 137                 if (pi->ipi_mflags & M_VLANTAG) {
 138                         /* TODO: Do we need to byte-swap the vtag here? */
 139                         cfa_meta = TX_BD_LONG_CFA_META_KEY_VLAN_TAG |
 140                             pi->ipi_vtag;
 141                         cfa_meta |= TX_BD_LONG_CFA_META_VLAN_TPID_TPID8100;
 142                 }
 143                 tbdh->cfa_meta = htole32(cfa_meta);
 144                 if (pi->ipi_csum_flags & CSUM_TSO) {
 145                         lflags |= TX_BD_LONG_LFLAGS_LSO |
 146                             TX_BD_LONG_LFLAGS_T_IPID;
 147                 }
 148                 else if(pi->ipi_csum_flags & CSUM_OFFLOAD) {
 149                         lflags |= TX_BD_LONG_LFLAGS_TCP_UDP_CHKSUM |
 150                             TX_BD_LONG_LFLAGS_IP_CHKSUM;
 151                 }
 152                 else if(pi->ipi_csum_flags & CSUM_IP) {
 153                         lflags |= TX_BD_LONG_LFLAGS_IP_CHKSUM;
 154                 }
 155                 tbdh->lflags = htole16(lflags);
 156         }
 157         else {
 158                 flags_type |= TX_BD_SHORT_TYPE_TX_BD_SHORT;
 159         }
 160
 161         for (; seg < pi->ipi_nsegs; seg++) {
 162                 tbd->flags_type = htole16(flags_type);
 163                 pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
 164                 tbd = &((struct tx_bd_long *)txr->vaddr)[pi->ipi_new_pidx];
 165                 tbd->len = htole16(pi->ipi_segs[seg].ds_len);
 166                 tbd->addr = htole64(pi->ipi_segs[seg].ds_addr);
 167                 flags_type = TX_BD_SHORT_TYPE_TX_BD_SHORT;
 168         }
 169         flags_type |= TX_BD_SHORT_FLAGS_PACKET_END;
 170         tbd->flags_type = htole16(flags_type);
 171         pi->ipi_new_pidx = RING_NEXT(txr, pi->ipi_new_pidx);
 172
 173         return 0;
 174 }
 175
 176 static void
 177 bnxt_isc_txd_flush(void *sc, uint16_t txqid, qidx_t pidx)
 178 {
 179         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 180         struct bnxt_ring *tx_ring = &softc->tx_rings[txqid];
 181
 182         /* pidx is what we last set ipi_new_pidx to */
 183         BNXT_TX_DB(tx_ring, pidx);
 184         /* TODO: Cumulus+ doesn't need the double doorbell */
 185         BNXT_TX_DB(tx_ring, pidx);
 186         return;
 187 }
 188
 189 static int
 190 bnxt_isc_txd_credits_update(void *sc, uint16_t txqid, bool clear)
 191 {
 192         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 193         struct bnxt_cp_ring *cpr = &softc->tx_cp_rings[txqid];
 194         struct tx_cmpl *cmpl = (struct tx_cmpl *)cpr->ring.vaddr;
 195         int avail = 0;
 196         uint32_t cons = cpr->cons;
 197         bool v_bit = cpr->v_bit;
 198         bool last_v_bit;
 199         uint32_t last_cons;
 200         uint16_t type;
 201         uint16_t err;
 202
 203         for (;;) {
 204                 last_cons = cons;
 205                 last_v_bit = v_bit;
 206                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 207                 CMPL_PREFETCH_NEXT(cpr, cons);
 208
 209                 if (!CMP_VALID(&cmpl[cons], v_bit))
 210                         goto done;
 211
 212                 type = cmpl[cons].flags_type & TX_CMPL_TYPE_MASK;
 213                 switch (type) {
 214                 case TX_CMPL_TYPE_TX_L2:
 215                         err = (le16toh(cmpl[cons].errors_v) &
 216                             TX_CMPL_ERRORS_BUFFER_ERROR_MASK) >>
 217                             TX_CMPL_ERRORS_BUFFER_ERROR_SFT;
 218                         if (err)
 219                                 device_printf(softc->dev,
 220                                     "TX completion error %u\n", err);
 221                         /* No need to byte-swap the opaque value */
 222                         avail += cmpl[cons].opaque >> 24;
 223                         /*
 224                          * If we're not clearing, iflib only cares if there's
 225                          * at least one buffer.  Don't scan the whole ring in
 226                          * this case.
 227                          */
 228                         if (!clear)
 229                                 goto done;
 230                         break;
 231                 default:
 232                         if (type & 1) {
 233                                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 234                                 if (!CMP_VALID(&cmpl[cons], v_bit))
 235                                         goto done;
 236                         }
 237                         device_printf(softc->dev,
 238                             "Unhandled TX completion type %u\n", type);
 239                         break;
 240                 }
 241         }
 242 done:
 243
 244         if (clear && avail) {
 245                 cpr->cons = last_cons;
 246                 cpr->v_bit = last_v_bit;
 247                 BNXT_CP_IDX_DISABLE_DB(&cpr->ring, cpr->cons);
 248         }
 249
 250         return avail;
 251 }
 252
 253 static void
 254 bnxt_isc_rxd_refill(void *sc, if_rxd_update_t iru)
 255 {
 256         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 257         struct bnxt_ring *rx_ring;
 258         struct rx_prod_pkt_bd *rxbd;
 259         uint16_t type;
 260         uint16_t i;
 261         uint16_t rxqid;
 262         uint16_t count, len;
 263         uint32_t pidx;
 264         uint8_t flid;
 265         uint64_t *paddrs;
 266         caddr_t *vaddrs;
 267         qidx_t  *frag_idxs;
 268
 269         rxqid = iru->iru_qsidx;
 270         count = iru->iru_count;
 271         len = iru->iru_buf_size;
 272         pidx = iru->iru_pidx;
 273         flid = iru->iru_flidx;
 274         vaddrs = iru->iru_vaddrs;
 275         paddrs = iru->iru_paddrs;
 276         frag_idxs = iru->iru_idxs;
 277
 278         if (flid == 0) {
 279                 rx_ring = &softc->rx_rings[rxqid];
 280                 type = RX_PROD_PKT_BD_TYPE_RX_PROD_PKT;
 281         }
 282         else {
 283                 rx_ring = &softc->ag_rings[rxqid];
 284                 type = RX_PROD_AGG_BD_TYPE_RX_PROD_AGG;
 285         }
 286         rxbd = (void *)rx_ring->vaddr;
 287
 288         for (i=0; i<count; i++) {
 289                 rxbd[pidx].flags_type = htole16(type);
 290                 rxbd[pidx].len = htole16(len);
 291                 /* No need to byte-swap the opaque value */
 292                 rxbd[pidx].opaque = (((rxqid & 0xff) << 24) | (flid << 16)
 293                     | (frag_idxs[i]));
 294                 rxbd[pidx].addr = htole64(paddrs[i]);
 295                 if (++pidx == rx_ring->ring_size)
 296                         pidx = 0;
 297         }
 298         return;
 299 }
 300
 301 static void
 302 bnxt_isc_rxd_flush(void *sc, uint16_t rxqid, uint8_t flid,
 303     qidx_t pidx)
 304 {
 305         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 306         struct bnxt_ring *rx_ring;
 307
 308         if (flid == 0)
 309                 rx_ring = &softc->rx_rings[rxqid];
 310         else
 311                 rx_ring = &softc->ag_rings[rxqid];
 312
 313         /*
 314          * We *must* update the completion ring before updating the RX ring
 315          * or we will overrun the completion ring and the device will wedge for
 316          * RX.
 317          */
 318         if (softc->rx_cp_rings[rxqid].cons != UINT32_MAX)
 319                 BNXT_CP_IDX_DISABLE_DB(&softc->rx_cp_rings[rxqid].ring,
 320                     softc->rx_cp_rings[rxqid].cons);
 321         /* We're given the last filled RX buffer here, not the next empty one */
 322         BNXT_RX_DB(rx_ring, RING_NEXT(rx_ring, pidx));
 323         /* TODO: Cumulus+ doesn't need the double doorbell */
 324         BNXT_RX_DB(rx_ring, RING_NEXT(rx_ring, pidx));
 325         return;
 326 }
 327
 328 static int
 329 bnxt_isc_rxd_available(void *sc, uint16_t rxqid, qidx_t idx, qidx_t budget)
 330 {
 331         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 332         struct bnxt_cp_ring *cpr = &softc->rx_cp_rings[rxqid];
 333         struct rx_pkt_cmpl *rcp;
 334         struct rx_tpa_end_cmpl *rtpae;
 335         struct cmpl_base *cmp = (struct cmpl_base *)cpr->ring.vaddr;
 336         int avail = 0;
 337         uint32_t cons = cpr->cons;
 338         bool v_bit = cpr->v_bit;
 339         uint8_t ags;
 340         int i;
 341         uint16_t type;
 342
 343         for (;;) {
 344                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 345                 CMPL_PREFETCH_NEXT(cpr, cons);
 346
 347                 if (!CMP_VALID(&cmp[cons], v_bit))
 348                         goto cmpl_invalid;
 349
 350                 type = le16toh(cmp[cons].type) & CMPL_BASE_TYPE_MASK;
 351                 switch (type) {
 352                 case CMPL_BASE_TYPE_RX_L2:
 353                         rcp = (void *)&cmp[cons];
 354                         ags = (rcp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK) >>
 355                             RX_PKT_CMPL_AGG_BUFS_SFT;
 356                         NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 357                         CMPL_PREFETCH_NEXT(cpr, cons);
 358
 359                         if (!CMP_VALID(&cmp[cons], v_bit))
 360                                 goto cmpl_invalid;
 361
 362                         /* Now account for all the AG completions */
 363                         for (i=0; i<ags; i++) {
 364                                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 365                                 CMPL_PREFETCH_NEXT(cpr, cons);
 366                                 if (!CMP_VALID(&cmp[cons], v_bit))
 367                                         goto cmpl_invalid;
 368                         }
 369                         avail++;
 370                         break;
 371                 case CMPL_BASE_TYPE_RX_TPA_END:
 372                         rtpae = (void *)&cmp[cons];
 373                         ags = (rtpae->agg_bufs_v1 &
 374                             RX_TPA_END_CMPL_AGG_BUFS_MASK) >>
 375                             RX_TPA_END_CMPL_AGG_BUFS_SFT;
 376                         NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 377                         CMPL_PREFETCH_NEXT(cpr, cons);
 378
 379                         if (!CMP_VALID(&cmp[cons], v_bit))
 380                                 goto cmpl_invalid;
 381                         /* Now account for all the AG completions */
 382                         for (i=0; i<ags; i++) {
 383                                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 384                                 CMPL_PREFETCH_NEXT(cpr, cons);
 385                                 if (!CMP_VALID(&cmp[cons], v_bit))
 386                                         goto cmpl_invalid;
 387                         }
 388                         avail++;
 389                         break;
 390                 case CMPL_BASE_TYPE_RX_TPA_START:
 391                         NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 392                         CMPL_PREFETCH_NEXT(cpr, cons);
 393
 394                         if (!CMP_VALID(&cmp[cons], v_bit))
 395                                 goto cmpl_invalid;
 396                         break;
 397                 case CMPL_BASE_TYPE_RX_AGG:
 398                         break;
 399                 default:
 400                         device_printf(softc->dev,
 401                             "Unhandled completion type %d on RXQ %d\n",
 402                             type, rxqid);
 403
 404                         /* Odd completion types use two completions */
 405                         if (type & 1) {
 406                                 NEXT_CP_CONS_V(&cpr->ring, cons, v_bit);
 407                                 CMPL_PREFETCH_NEXT(cpr, cons);
 408
 409                                 if (!CMP_VALID(&cmp[cons], v_bit))
 410                                         goto cmpl_invalid;
 411                         }
 412                         break;
 413                 }
 414                 if (avail > budget)
 415                         break;
 416         }
 417 cmpl_invalid:
 418
 419         return avail;
 420 }
 421
 422 static int
 423 bnxt_pkt_get_l2(struct bnxt_softc *softc, if_rxd_info_t ri,
 424     struct bnxt_cp_ring *cpr, uint16_t flags_type)
 425 {
 426         struct rx_pkt_cmpl *rcp;
 427         struct rx_pkt_cmpl_hi *rcph;
 428         struct rx_abuf_cmpl *acp;
 429         uint32_t flags2;
 430         uint32_t errors;
 431         uint8_t ags;
 432         int i;
 433
 434         rcp = &((struct rx_pkt_cmpl *)cpr->ring.vaddr)[cpr->cons];
 435
 436         /* Extract from the first 16-byte BD */
 437         if (flags_type & RX_PKT_CMPL_FLAGS_RSS_VALID) {
 438                 ri->iri_flowid = le32toh(rcp->rss_hash);
 439                 /*
 440                  * TODO: Extract something useful from rcp->rss_hash_type
 441                  * (undocumented)
 442                  * May be documented in the "LSI ES"
 443                  * also check the firmware code.
 444                  */
 445                 ri->iri_rsstype = M_HASHTYPE_OPAQUE;
 446         }
 447         else {
 448                 ri->iri_rsstype = M_HASHTYPE_NONE;
 449         }
 450         ags = (rcp->agg_bufs_v1 & RX_PKT_CMPL_AGG_BUFS_MASK) >>
 451             RX_PKT_CMPL_AGG_BUFS_SFT;
 452         ri->iri_nfrags = ags + 1;
 453         /* No need to byte-swap the opaque value */
 454         ri->iri_frags[0].irf_flid = (rcp->opaque >> 16) & 0xff;
 455         ri->iri_frags[0].irf_idx = rcp->opaque & 0xffff;
 456         ri->iri_frags[0].irf_len = le16toh(rcp->len);
 457         ri->iri_len = le16toh(rcp->len);
 458
 459         /* Now the second 16-byte BD */
 460         NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 461         ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 462         rcph = &((struct rx_pkt_cmpl_hi *)cpr->ring.vaddr)[cpr->cons];
 463
 464         flags2 = le32toh(rcph->flags2);
 465         errors = le16toh(rcph->errors_v2);
 466         if ((flags2 & RX_PKT_CMPL_FLAGS2_META_FORMAT_MASK) ==
 467             RX_PKT_CMPL_FLAGS2_META_FORMAT_VLAN) {
 468                 ri->iri_flags |= M_VLANTAG;
 469                 /* TODO: Should this be the entire 16-bits? */
 470                 ri->iri_vtag = le32toh(rcph->metadata) &
 471                     (RX_PKT_CMPL_METADATA_VID_MASK | RX_PKT_CMPL_METADATA_DE |
 472                     RX_PKT_CMPL_METADATA_PRI_MASK);
 473         }
 474         if (flags2 & RX_PKT_CMPL_FLAGS2_IP_CS_CALC) {
 475                 ri->iri_csum_flags |= CSUM_IP_CHECKED;
 476                 if (!(errors & RX_PKT_CMPL_ERRORS_IP_CS_ERROR))
 477                         ri->iri_csum_flags |= CSUM_IP_VALID;
 478         }
 479         if (flags2 & RX_PKT_CMPL_FLAGS2_L4_CS_CALC) {
 480                 ri->iri_csum_flags |= CSUM_L4_CALC;
 481                 if (!(errors & RX_PKT_CMPL_ERRORS_L4_CS_ERROR)) {
 482                         ri->iri_csum_flags |= CSUM_L4_VALID;
 483                         ri->iri_csum_data = 0xffff;
 484                 }
 485         }
 486
 487         /* And finally the ag ring stuff. */
 488         for (i=1; i < ri->iri_nfrags; i++) {
 489                 NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 490                 ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 491                 acp = &((struct rx_abuf_cmpl *)cpr->ring.vaddr)[cpr->cons];
 492
 493                 /* No need to byte-swap the opaque value */
 494                 ri->iri_frags[i].irf_flid = (acp->opaque >> 16 & 0xff);
 495                 ri->iri_frags[i].irf_idx = acp->opaque & 0xffff;
 496                 ri->iri_frags[i].irf_len = le16toh(acp->len);
 497                 ri->iri_len += le16toh(acp->len);
 498         }
 499
 500         return 0;
 501 }
 502
 503 static int
 504 bnxt_pkt_get_tpa(struct bnxt_softc *softc, if_rxd_info_t ri,
 505     struct bnxt_cp_ring *cpr, uint16_t flags_type)
 506 {
 507         struct rx_tpa_end_cmpl *agend =
 508             &((struct rx_tpa_end_cmpl *)cpr->ring.vaddr)[cpr->cons];
 509         struct rx_tpa_end_cmpl_hi *agendh;
 510         struct rx_abuf_cmpl *acp;
 511         struct bnxt_full_tpa_start *tpas;
 512         uint32_t flags2;
 513         uint8_t ags;
 514         uint8_t agg_id;
 515         int i;
 516
 517         /* Get the agg_id */
 518         agg_id = (agend->agg_id & RX_TPA_END_CMPL_AGG_ID_MASK) >>
 519             RX_TPA_END_CMPL_AGG_ID_SFT;
 520         tpas = &(softc->rx_rings[ri->iri_qsidx].tpa_start[agg_id]);
 521
 522         /* Extract from the first 16-byte BD */
 523         if (le16toh(tpas->low.flags_type) & RX_TPA_START_CMPL_FLAGS_RSS_VALID) {
 524                 ri->iri_flowid = le32toh(tpas->low.rss_hash);
 525                 /*
 526                  * TODO: Extract something useful from tpas->low.rss_hash_type
 527                  * (undocumented)
 528                  * May be documented in the "LSI ES"
 529                  * also check the firmware code.
 530                  */
 531                 ri->iri_rsstype = M_HASHTYPE_OPAQUE;
 532         }
 533         else {
 534                 ri->iri_rsstype = M_HASHTYPE_NONE;
 535         }
 536         ags = (agend->agg_bufs_v1 & RX_TPA_END_CMPL_AGG_BUFS_MASK) >>
 537             RX_TPA_END_CMPL_AGG_BUFS_SFT;
 538         ri->iri_nfrags = ags + 1;
 539         /* No need to byte-swap the opaque value */
 540         ri->iri_frags[0].irf_flid = ((tpas->low.opaque >> 16) & 0xff);
 541         ri->iri_frags[0].irf_idx = (tpas->low.opaque & 0xffff);
 542         ri->iri_frags[0].irf_len = le16toh(tpas->low.len);
 543         ri->iri_len = le16toh(tpas->low.len);
 544
 545         /* Now the second 16-byte BD */
 546         NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 547         ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 548         agendh = &((struct rx_tpa_end_cmpl_hi *)cpr->ring.vaddr)[cpr->cons];
 549
 550         flags2 = le32toh(tpas->high.flags2);
 551         if ((flags2 & RX_TPA_START_CMPL_FLAGS2_META_FORMAT_MASK) ==
 552             RX_TPA_START_CMPL_FLAGS2_META_FORMAT_VLAN) {
 553                 ri->iri_flags |= M_VLANTAG;
 554                 /* TODO: Should this be the entire 16-bits? */
 555                 ri->iri_vtag = le32toh(tpas->high.metadata) &
 556                     (RX_TPA_START_CMPL_METADATA_VID_MASK |
 557                     RX_TPA_START_CMPL_METADATA_DE |
 558                     RX_TPA_START_CMPL_METADATA_PRI_MASK);
 559         }
 560         if (flags2 & RX_TPA_START_CMPL_FLAGS2_IP_CS_CALC) {
 561                 ri->iri_csum_flags |= CSUM_IP_CHECKED;
 562                 ri->iri_csum_flags |= CSUM_IP_VALID;
 563         }
 564         if (flags2 & RX_TPA_START_CMPL_FLAGS2_L4_CS_CALC) {
 565                 ri->iri_csum_flags |= CSUM_L4_CALC;
 566                 ri->iri_csum_flags |= CSUM_L4_VALID;
 567                 ri->iri_csum_data = 0xffff;
 568         }
 569
 570         /* Now the ag ring stuff. */
 571         for (i=1; i < ri->iri_nfrags; i++) {
 572                 NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 573                 ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 574                 acp = &((struct rx_abuf_cmpl *)cpr->ring.vaddr)[cpr->cons];
 575
 576                 /* No need to byte-swap the opaque value */
 577                 ri->iri_frags[i].irf_flid = ((acp->opaque >> 16) & 0xff);
 578                 ri->iri_frags[i].irf_idx = (acp->opaque & 0xffff);
 579                 ri->iri_frags[i].irf_len = le16toh(acp->len);
 580                 ri->iri_len += le16toh(acp->len);
 581         }
 582
 583         /* And finally, the empty BD at the end... */
 584         ri->iri_nfrags++;
 585         /* No need to byte-swap the opaque value */
 586         ri->iri_frags[i].irf_flid = ((agend->opaque >> 16) & 0xff);
 587         ri->iri_frags[i].irf_idx = (agend->opaque & 0xffff);
 588         ri->iri_frags[i].irf_len = le16toh(agend->len);
 589         ri->iri_len += le16toh(agend->len);
 590
 591         return 0;
 592 }
 593
 594 /* If we return anything but zero, iflib will assert... */
 595 static int
 596 bnxt_isc_rxd_pkt_get(void *sc, if_rxd_info_t ri)
 597 {
 598         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 599         struct bnxt_cp_ring *cpr = &softc->rx_cp_rings[ri->iri_qsidx];
 600         struct cmpl_base *cmp_q = (struct cmpl_base *)cpr->ring.vaddr;
 601         struct cmpl_base *cmp;
 602         struct rx_tpa_start_cmpl *rtpa;
 603         uint16_t flags_type;
 604         uint16_t type;
 605         uint8_t agg_id;
 606
 607         for (;;) {
 608                 NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 609                 ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 610                 CMPL_PREFETCH_NEXT(cpr, cpr->cons);
 611                 cmp = &((struct cmpl_base *)cpr->ring.vaddr)[cpr->cons];
 612
 613                 flags_type = le16toh(cmp->type);
 614                 type = flags_type & CMPL_BASE_TYPE_MASK;
 615
 616                 switch (type) {
 617                 case CMPL_BASE_TYPE_RX_L2:
 618                         return bnxt_pkt_get_l2(softc, ri, cpr, flags_type);
 619                 case CMPL_BASE_TYPE_RX_TPA_END:
 620                         return bnxt_pkt_get_tpa(softc, ri, cpr, flags_type);
 621                 case CMPL_BASE_TYPE_RX_TPA_START:
 622                         rtpa = (void *)&cmp_q[cpr->cons];
 623                         agg_id = (rtpa->agg_id &
 624                             RX_TPA_START_CMPL_AGG_ID_MASK) >>
 625                             RX_TPA_START_CMPL_AGG_ID_SFT;
 626                         softc->rx_rings[ri->iri_qsidx].tpa_start[agg_id].low = *rtpa;
 627
 628                         NEXT_CP_CONS_V(&cpr->ring, cpr->cons, cpr->v_bit);
 629                         ri->iri_cidx = RING_NEXT(&cpr->ring, ri->iri_cidx);
 630                         CMPL_PREFETCH_NEXT(cpr, cpr->cons);
 631
 632                         softc->rx_rings[ri->iri_qsidx].tpa_start[agg_id].high =
 633                             ((struct rx_tpa_start_cmpl_hi *)cmp_q)[cpr->cons];
 634                         break;
 635                 default:
 636                         device_printf(softc->dev,
 637                             "Unhandled completion type %d on RXQ %d get\n",
 638                             type, ri->iri_qsidx);
 639                         if (type & 1) {
 640                                 NEXT_CP_CONS_V(&cpr->ring, cpr->cons,
 641                                     cpr->v_bit);
 642                                 ri->iri_cidx = RING_NEXT(&cpr->ring,
 643                                     ri->iri_cidx);
 644                                 CMPL_PREFETCH_NEXT(cpr, cpr->cons);
 645                         }
 646                         break;
 647                 }
 648         }
 649
 650         return 0;
 651 }
 652
 653 static int
 654 bnxt_intr(void *sc)
 655 {
 656         struct bnxt_softc *softc = (struct bnxt_softc *)sc;
 657
 658         device_printf(softc->dev, "STUB: %s @ %s:%d\n", __func__, __FILE__, __LINE__);
 659         return ENOSYS;
 660 }