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