drivers/net/dpaa/dpaa_rxtx.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 Freescale Semiconductor, Inc. All rights reserved.
   5  *   Copyright 2017 NXP.
   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  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of  Freescale Semiconductor, Inc nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 /* System headers */
  35 #include <inttypes.h>
  36 #include <unistd.h>
  37 #include <stdio.h>
  38 #include <limits.h>
  39 #include <sched.h>
  40 #include <pthread.h>
  41
  42 #include <rte_byteorder.h>
  43 #include <rte_common.h>
  44 #include <rte_interrupts.h>
  45 #include <rte_log.h>
  46 #include <rte_debug.h>
  47 #include <rte_pci.h>
  48 #include <rte_atomic.h>
  49 #include <rte_branch_prediction.h>
  50 #include <rte_memory.h>
  51 #include <rte_tailq.h>
  52 #include <rte_eal.h>
  53 #include <rte_alarm.h>
  54 #include <rte_ether.h>
  55 #include <rte_ethdev.h>
  56 #include <rte_malloc.h>
  57 #include <rte_ring.h>
  58 #include <rte_ip.h>
  59 #include <rte_tcp.h>
  60 #include <rte_udp.h>
  61
  62 #include "dpaa_ethdev.h"
  63 #include "dpaa_rxtx.h"
  64 #include <rte_dpaa_bus.h>
  65 #include <dpaa_mempool.h>
  66
  67 #include <fsl_usd.h>
  68 #include <fsl_qman.h>
  69 #include <fsl_bman.h>
  70 #include <of.h>
  71 #include <netcfg.h>
  72
  73 #define DPAA_MBUF_TO_CONTIG_FD(_mbuf, _fd, _bpid) \
  74         do { \
  75                 (_fd)->cmd = 0; \
  76                 (_fd)->opaque_addr = 0; \
  77                 (_fd)->opaque = QM_FD_CONTIG << DPAA_FD_FORMAT_SHIFT; \
  78                 (_fd)->opaque |= ((_mbuf)->data_off) << DPAA_FD_OFFSET_SHIFT; \
  79                 (_fd)->opaque |= (_mbuf)->pkt_len; \
  80                 (_fd)->addr = (_mbuf)->buf_iova; \
  81                 (_fd)->bpid = _bpid; \
  82         } while (0)
  83
  84 #if (defined RTE_LIBRTE_DPAA_DEBUG_DRIVER)
  85 void dpaa_display_frame(const struct qm_fd *fd)
  86 {
  87         int ii;
  88         char *ptr;
  89
  90         printf("%s::bpid %x addr %08x%08x, format %d off %d, len %d stat %x\n",
  91                __func__, fd->bpid, fd->addr_hi, fd->addr_lo, fd->format,
  92                 fd->offset, fd->length20, fd->status);
  93
  94         ptr = (char *)rte_dpaa_mem_ptov(fd->addr);
  95         ptr += fd->offset;
  96         printf("%02x ", *ptr);
  97         for (ii = 1; ii < fd->length20; ii++) {
  98                 printf("%02x ", *ptr);
  99                 if ((ii % 16) == 0)
 100                         printf("\n");
 101                 ptr++;
 102         }
 103         printf("\n");
 104 }
 105 #else
 106 #define dpaa_display_frame(a)
 107 #endif
 108
 109 static inline void dpaa_slow_parsing(struct rte_mbuf *m __rte_unused,
 110                                      uint64_t prs __rte_unused)
 111 {
 112         DPAA_DP_LOG(DEBUG, "Slow parsing");
 113         /*TBD:XXX: to be implemented*/
 114 }
 115
 116 static inline void dpaa_eth_packet_info(struct rte_mbuf *m,
 117                                         uint64_t fd_virt_addr)
 118 {
 119         struct annotations_t *annot = GET_ANNOTATIONS(fd_virt_addr);
 120         uint64_t prs = *((uint64_t *)(&annot->parse)) & DPAA_PARSE_MASK;
 121
 122         DPAA_DP_LOG(DEBUG, " Parsing mbuf: %p with annotations: %p", m, annot);
 123
 124         switch (prs) {
 125         case DPAA_PKT_TYPE_NONE:
 126                 m->packet_type = 0;
 127                 break;
 128         case DPAA_PKT_TYPE_ETHER:
 129                 m->packet_type = RTE_PTYPE_L2_ETHER;
 130                 break;
 131         case DPAA_PKT_TYPE_IPV4:
 132                 m->packet_type = RTE_PTYPE_L2_ETHER |
 133                         RTE_PTYPE_L3_IPV4;
 134                 break;
 135         case DPAA_PKT_TYPE_IPV6:
 136                 m->packet_type = RTE_PTYPE_L2_ETHER |
 137                         RTE_PTYPE_L3_IPV6;
 138                 break;
 139         case DPAA_PKT_TYPE_IPV4_FRAG:
 140         case DPAA_PKT_TYPE_IPV4_FRAG_UDP:
 141         case DPAA_PKT_TYPE_IPV4_FRAG_TCP:
 142         case DPAA_PKT_TYPE_IPV4_FRAG_SCTP:
 143                 m->packet_type = RTE_PTYPE_L2_ETHER |
 144                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_FRAG;
 145                 break;
 146         case DPAA_PKT_TYPE_IPV6_FRAG:
 147         case DPAA_PKT_TYPE_IPV6_FRAG_UDP:
 148         case DPAA_PKT_TYPE_IPV6_FRAG_TCP:
 149         case DPAA_PKT_TYPE_IPV6_FRAG_SCTP:
 150                 m->packet_type = RTE_PTYPE_L2_ETHER |
 151                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_FRAG;
 152                 break;
 153         case DPAA_PKT_TYPE_IPV4_EXT:
 154                 m->packet_type = RTE_PTYPE_L2_ETHER |
 155                         RTE_PTYPE_L3_IPV4_EXT;
 156                 break;
 157         case DPAA_PKT_TYPE_IPV6_EXT:
 158                 m->packet_type = RTE_PTYPE_L2_ETHER |
 159                         RTE_PTYPE_L3_IPV6_EXT;
 160                 break;
 161         case DPAA_PKT_TYPE_IPV4_TCP:
 162                 m->packet_type = RTE_PTYPE_L2_ETHER |
 163                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_TCP;
 164                 break;
 165         case DPAA_PKT_TYPE_IPV6_TCP:
 166                 m->packet_type = RTE_PTYPE_L2_ETHER |
 167                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_TCP;
 168                 break;
 169         case DPAA_PKT_TYPE_IPV4_UDP:
 170                 m->packet_type = RTE_PTYPE_L2_ETHER |
 171                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_UDP;
 172                 break;
 173         case DPAA_PKT_TYPE_IPV6_UDP:
 174                 m->packet_type = RTE_PTYPE_L2_ETHER |
 175                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_UDP;
 176                 break;
 177         case DPAA_PKT_TYPE_IPV4_EXT_UDP:
 178                 m->packet_type = RTE_PTYPE_L2_ETHER |
 179                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_UDP;
 180                 break;
 181         case DPAA_PKT_TYPE_IPV6_EXT_UDP:
 182                 m->packet_type = RTE_PTYPE_L2_ETHER |
 183                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_UDP;
 184                 break;
 185         case DPAA_PKT_TYPE_IPV4_EXT_TCP:
 186                 m->packet_type = RTE_PTYPE_L2_ETHER |
 187                         RTE_PTYPE_L3_IPV4_EXT | RTE_PTYPE_L4_TCP;
 188                 break;
 189         case DPAA_PKT_TYPE_IPV6_EXT_TCP:
 190                 m->packet_type = RTE_PTYPE_L2_ETHER |
 191                         RTE_PTYPE_L3_IPV6_EXT | RTE_PTYPE_L4_TCP;
 192                 break;
 193         case DPAA_PKT_TYPE_IPV4_SCTP:
 194                 m->packet_type = RTE_PTYPE_L2_ETHER |
 195                         RTE_PTYPE_L3_IPV4 | RTE_PTYPE_L4_SCTP;
 196                 break;
 197         case DPAA_PKT_TYPE_IPV6_SCTP:
 198                 m->packet_type = RTE_PTYPE_L2_ETHER |
 199                         RTE_PTYPE_L3_IPV6 | RTE_PTYPE_L4_SCTP;
 200                 break;
 201         /* More switch cases can be added */
 202         default:
 203                 dpaa_slow_parsing(m, prs);
 204         }
 205
 206         m->tx_offload = annot->parse.ip_off[0];
 207         m->tx_offload |= (annot->parse.l4_off - annot->parse.ip_off[0])
 208                                         << DPAA_PKT_L3_LEN_SHIFT;
 209
 210         /* Set the hash values */
 211         m->hash.rss = (uint32_t)(rte_be_to_cpu_64(annot->hash));
 212         m->ol_flags = PKT_RX_RSS_HASH;
 213         /* All packets with Bad checksum are dropped by interface (and
 214          * corresponding notification issued to RX error queues).
 215          */
 216         m->ol_flags |= PKT_RX_IP_CKSUM_GOOD;
 217
 218         /* Check if Vlan is present */
 219         if (prs & DPAA_PARSE_VLAN_MASK)
 220                 m->ol_flags |= PKT_RX_VLAN;
 221         /* Packet received without stripping the vlan */
 222 }
 223
 224 static inline void dpaa_checksum(struct rte_mbuf *mbuf)
 225 {
 226         struct ether_hdr *eth_hdr = rte_pktmbuf_mtod(mbuf, struct ether_hdr *);
 227         char *l3_hdr = (char *)eth_hdr + mbuf->l2_len;
 228         struct ipv4_hdr *ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 229         struct ipv6_hdr *ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 230
 231         DPAA_DP_LOG(DEBUG, "Calculating checksum for mbuf: %p", mbuf);
 232
 233         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 234             ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 235             RTE_PTYPE_L3_IPV4_EXT)) {
 236                 ipv4_hdr = (struct ipv4_hdr *)l3_hdr;
 237                 ipv4_hdr->hdr_checksum = 0;
 238                 ipv4_hdr->hdr_checksum = rte_ipv4_cksum(ipv4_hdr);
 239         } else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 240                    RTE_PTYPE_L3_IPV6) ||
 241                    ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 242                    RTE_PTYPE_L3_IPV6_EXT))
 243                 ipv6_hdr = (struct ipv6_hdr *)l3_hdr;
 244
 245         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP) {
 246                 struct tcp_hdr *tcp_hdr = (struct tcp_hdr *)(l3_hdr +
 247                                           mbuf->l3_len);
 248                 tcp_hdr->cksum = 0;
 249                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 250                         tcp_hdr->cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 251                                                                tcp_hdr);
 252                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 253                         tcp_hdr->cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 254                                                                tcp_hdr);
 255         } else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) ==
 256                    RTE_PTYPE_L4_UDP) {
 257                 struct udp_hdr *udp_hdr = (struct udp_hdr *)(l3_hdr +
 258                                                              mbuf->l3_len);
 259                 udp_hdr->dgram_cksum = 0;
 260                 if (eth_hdr->ether_type == htons(ETHER_TYPE_IPv4))
 261                         udp_hdr->dgram_cksum = rte_ipv4_udptcp_cksum(ipv4_hdr,
 262                                                                      udp_hdr);
 263                 else /* assume ethertype == ETHER_TYPE_IPv6 */
 264                         udp_hdr->dgram_cksum = rte_ipv6_udptcp_cksum(ipv6_hdr,
 265                                                                      udp_hdr);
 266         }
 267 }
 268
 269 static inline void dpaa_checksum_offload(struct rte_mbuf *mbuf,
 270                                          struct qm_fd *fd, char *prs_buf)
 271 {
 272         struct dpaa_eth_parse_results_t *prs;
 273
 274         DPAA_DP_LOG(DEBUG, " Offloading checksum for mbuf: %p", mbuf);
 275
 276         prs = GET_TX_PRS(prs_buf);
 277         prs->l3r = 0;
 278         prs->l4r = 0;
 279         if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) == RTE_PTYPE_L3_IPV4) ||
 280            ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 281            RTE_PTYPE_L3_IPV4_EXT))
 282                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV4;
 283         else if (((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 284                    RTE_PTYPE_L3_IPV6) ||
 285                  ((mbuf->packet_type & RTE_PTYPE_L3_MASK) ==
 286                 RTE_PTYPE_L3_IPV6_EXT))
 287                 prs->l3r = DPAA_L3_PARSE_RESULT_IPV6;
 288
 289         if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_TCP)
 290                 prs->l4r = DPAA_L4_PARSE_RESULT_TCP;
 291         else if ((mbuf->packet_type & RTE_PTYPE_L4_MASK) == RTE_PTYPE_L4_UDP)
 292                 prs->l4r = DPAA_L4_PARSE_RESULT_UDP;
 293
 294         prs->ip_off[0] = mbuf->l2_len;
 295         prs->l4_off = mbuf->l3_len + mbuf->l2_len;
 296         /* Enable L3 (and L4, if TCP or UDP) HW checksum*/
 297         fd->cmd = DPAA_FD_CMD_RPD | DPAA_FD_CMD_DTC;
 298 }
 299
 300 struct rte_mbuf *
 301 dpaa_eth_sg_to_mbuf(struct qm_fd *fd, uint32_t ifid)
 302 {
 303         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 304         struct rte_mbuf *first_seg, *prev_seg, *cur_seg, *temp;
 305         struct qm_sg_entry *sgt, *sg_temp;
 306         void *vaddr, *sg_vaddr;
 307         int i = 0;
 308         uint8_t fd_offset = fd->offset;
 309
 310         DPAA_DP_LOG(DEBUG, "Received an SG frame");
 311
 312         vaddr = rte_dpaa_mem_ptov(qm_fd_addr(fd));
 313         if (!vaddr) {
 314                 DPAA_PMD_ERR("unable to convert physical address");
 315                 return NULL;
 316         }
 317         sgt = vaddr + fd_offset;
 318         sg_temp = &sgt[i++];
 319         hw_sg_to_cpu(sg_temp);
 320         temp = (struct rte_mbuf *)((char *)vaddr - bp_info->meta_data_size);
 321         sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 322
 323         first_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 324                                                 bp_info->meta_data_size);
 325         first_seg->data_off = sg_temp->offset;
 326         first_seg->data_len = sg_temp->length;
 327         first_seg->pkt_len = sg_temp->length;
 328         rte_mbuf_refcnt_set(first_seg, 1);
 329
 330         first_seg->port = ifid;
 331         first_seg->nb_segs = 1;
 332         first_seg->ol_flags = 0;
 333         prev_seg = first_seg;
 334         while (i < DPAA_SGT_MAX_ENTRIES) {
 335                 sg_temp = &sgt[i++];
 336                 hw_sg_to_cpu(sg_temp);
 337                 sg_vaddr = rte_dpaa_mem_ptov(qm_sg_entry_get64(sg_temp));
 338                 cur_seg = (struct rte_mbuf *)((char *)sg_vaddr -
 339                                                       bp_info->meta_data_size);
 340                 cur_seg->data_off = sg_temp->offset;
 341                 cur_seg->data_len = sg_temp->length;
 342                 first_seg->pkt_len += sg_temp->length;
 343                 first_seg->nb_segs += 1;
 344                 rte_mbuf_refcnt_set(cur_seg, 1);
 345                 prev_seg->next = cur_seg;
 346                 if (sg_temp->final) {
 347                         cur_seg->next = NULL;
 348                         break;
 349                 }
 350                 prev_seg = cur_seg;
 351         }
 352
 353         dpaa_eth_packet_info(first_seg, (uint64_t)vaddr);
 354         rte_pktmbuf_free_seg(temp);
 355
 356         return first_seg;
 357 }
 358
 359 static inline struct rte_mbuf *dpaa_eth_fd_to_mbuf(struct qm_fd *fd,
 360                                                         uint32_t ifid)
 361 {
 362         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(fd->bpid);
 363         struct rte_mbuf *mbuf;
 364         void *ptr;
 365         uint8_t format =
 366                 (fd->opaque & DPAA_FD_FORMAT_MASK) >> DPAA_FD_FORMAT_SHIFT;
 367         uint16_t offset =
 368                 (fd->opaque & DPAA_FD_OFFSET_MASK) >> DPAA_FD_OFFSET_SHIFT;
 369         uint32_t length = fd->opaque & DPAA_FD_LENGTH_MASK;
 370
 371         DPAA_DP_LOG(DEBUG, " FD--->MBUF");
 372
 373         if (unlikely(format == qm_fd_sg))
 374                 return dpaa_eth_sg_to_mbuf(fd, ifid);
 375
 376         /* Ignoring case when format != qm_fd_contig */
 377         dpaa_display_frame(fd);
 378         ptr = rte_dpaa_mem_ptov(fd->addr);
 379         /* Ignoring case when ptr would be NULL. That is only possible incase
 380          * of a corrupted packet
 381          */
 382
 383         mbuf = (struct rte_mbuf *)((char *)ptr - bp_info->meta_data_size);
 384         /* Prefetch the Parse results and packet data to L1 */
 385         rte_prefetch0((void *)((uint8_t *)ptr + DEFAULT_RX_ICEOF));
 386         rte_prefetch0((void *)((uint8_t *)ptr + offset));
 387
 388         mbuf->data_off = offset;
 389         mbuf->data_len = length;
 390         mbuf->pkt_len = length;
 391
 392         mbuf->port = ifid;
 393         mbuf->nb_segs = 1;
 394         mbuf->ol_flags = 0;
 395         mbuf->next = NULL;
 396         rte_mbuf_refcnt_set(mbuf, 1);
 397         dpaa_eth_packet_info(mbuf, (uint64_t)mbuf->buf_addr);
 398
 399         return mbuf;
 400 }
 401
 402 uint16_t dpaa_eth_queue_rx(void *q,
 403                            struct rte_mbuf **bufs,
 404                            uint16_t nb_bufs)
 405 {
 406         struct qman_fq *fq = q;
 407         struct qm_dqrr_entry *dq;
 408         uint32_t num_rx = 0, ifid = ((struct dpaa_if *)fq->dpaa_intf)->ifid;
 409         int ret;
 410
 411         ret = rte_dpaa_portal_init((void *)0);
 412         if (ret) {
 413                 DPAA_PMD_ERR("Failure in affining portal");
 414                 return 0;
 415         }
 416
 417         ret = qman_set_vdq(fq, (nb_bufs > DPAA_MAX_DEQUEUE_NUM_FRAMES) ?
 418                                 DPAA_MAX_DEQUEUE_NUM_FRAMES : nb_bufs);
 419         if (ret)
 420                 return 0;
 421
 422         do {
 423                 dq = qman_dequeue(fq);
 424                 if (!dq)
 425                         continue;
 426                 bufs[num_rx++] = dpaa_eth_fd_to_mbuf(&dq->fd, ifid);
 427                 qman_dqrr_consume(fq, dq);
 428         } while (fq->flags & QMAN_FQ_STATE_VDQCR);
 429
 430         return num_rx;
 431 }
 432
 433 static void *dpaa_get_pktbuf(struct dpaa_bp_info *bp_info)
 434 {
 435         int ret;
 436         uint64_t buf = 0;
 437         struct bm_buffer bufs;
 438
 439         ret = bman_acquire(bp_info->bp, &bufs, 1, 0);
 440         if (ret <= 0) {
 441                 DPAA_PMD_WARN("Failed to allocate buffers %d", ret);
 442                 return (void *)buf;
 443         }
 444
 445         DPAA_DP_LOG(DEBUG, "got buffer 0x%lx from pool %d",
 446                     (uint64_t)bufs.addr, bufs.bpid);
 447
 448         buf = (uint64_t)rte_dpaa_mem_ptov(bufs.addr) - bp_info->meta_data_size;
 449         if (!buf)
 450                 goto out;
 451
 452 out:
 453         return (void *)buf;
 454 }
 455
 456 static struct rte_mbuf *dpaa_get_dmable_mbuf(struct rte_mbuf *mbuf,
 457                                              struct dpaa_if *dpaa_intf)
 458 {
 459         struct rte_mbuf *dpaa_mbuf;
 460
 461         /* allocate pktbuffer on bpid for dpaa port */
 462         dpaa_mbuf = dpaa_get_pktbuf(dpaa_intf->bp_info);
 463         if (!dpaa_mbuf)
 464                 return NULL;
 465
 466         memcpy((uint8_t *)(dpaa_mbuf->buf_addr) + mbuf->data_off, (void *)
 467                 ((uint8_t *)(mbuf->buf_addr) + mbuf->data_off), mbuf->pkt_len);
 468
 469         /* Copy only the required fields */
 470         dpaa_mbuf->data_off = mbuf->data_off;
 471         dpaa_mbuf->pkt_len = mbuf->pkt_len;
 472         dpaa_mbuf->ol_flags = mbuf->ol_flags;
 473         dpaa_mbuf->packet_type = mbuf->packet_type;
 474         dpaa_mbuf->tx_offload = mbuf->tx_offload;
 475         rte_pktmbuf_free(mbuf);
 476         return dpaa_mbuf;
 477 }
 478
 479 int
 480 dpaa_eth_mbuf_to_sg_fd(struct rte_mbuf *mbuf,
 481                 struct qm_fd *fd,
 482                 uint32_t bpid)
 483 {
 484         struct rte_mbuf *cur_seg = mbuf, *prev_seg = NULL;
 485         struct dpaa_bp_info *bp_info = DPAA_BPID_TO_POOL_INFO(bpid);
 486         struct rte_mbuf *temp, *mi;
 487         struct qm_sg_entry *sg_temp, *sgt;
 488         int i = 0;
 489
 490         DPAA_DP_LOG(DEBUG, "Creating SG FD to transmit");
 491
 492         temp = rte_pktmbuf_alloc(bp_info->mp);
 493         if (!temp) {
 494                 DPAA_PMD_ERR("Failure in allocation of mbuf");
 495                 return -1;
 496         }
 497         if (temp->buf_len < ((mbuf->nb_segs * sizeof(struct qm_sg_entry))
 498                                 + temp->data_off)) {
 499                 DPAA_PMD_ERR("Insufficient space in mbuf for SG entries");
 500                 return -1;
 501         }
 502
 503         fd->cmd = 0;
 504         fd->opaque_addr = 0;
 505
 506         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 507                 if (temp->data_off < DEFAULT_TX_ICEOF
 508                         + sizeof(struct dpaa_eth_parse_results_t))
 509                         temp->data_off = DEFAULT_TX_ICEOF
 510                                 + sizeof(struct dpaa_eth_parse_results_t);
 511                 dcbz_64(temp->buf_addr);
 512                 dpaa_checksum_offload(mbuf, fd, temp->buf_addr);
 513         }
 514
 515         sgt = temp->buf_addr + temp->data_off;
 516         fd->format = QM_FD_SG;
 517         fd->addr = temp->buf_iova;
 518         fd->offset = temp->data_off;
 519         fd->bpid = bpid;
 520         fd->length20 = mbuf->pkt_len;
 521
 522         while (i < DPAA_SGT_MAX_ENTRIES) {
 523                 sg_temp = &sgt[i++];
 524                 sg_temp->opaque = 0;
 525                 sg_temp->val = 0;
 526                 sg_temp->addr = cur_seg->buf_iova;
 527                 sg_temp->offset = cur_seg->data_off;
 528                 sg_temp->length = cur_seg->data_len;
 529                 if (RTE_MBUF_DIRECT(cur_seg)) {
 530                         if (rte_mbuf_refcnt_read(cur_seg) > 1) {
 531                                 /*If refcnt > 1, invalid bpid is set to ensure
 532                                  * buffer is not freed by HW.
 533                                  */
 534                                 sg_temp->bpid = 0xff;
 535                                 rte_mbuf_refcnt_update(cur_seg, -1);
 536                         } else {
 537                                 sg_temp->bpid =
 538                                         DPAA_MEMPOOL_TO_BPID(cur_seg->pool);
 539                         }
 540                         cur_seg = cur_seg->next;
 541                 } else {
 542                         /* Get owner MBUF from indirect buffer */
 543                         mi = rte_mbuf_from_indirect(cur_seg);
 544                         if (rte_mbuf_refcnt_read(mi) > 1) {
 545                                 /*If refcnt > 1, invalid bpid is set to ensure
 546                                  * owner buffer is not freed by HW.
 547                                  */
 548                                 sg_temp->bpid = 0xff;
 549                         } else {
 550                                 sg_temp->bpid = DPAA_MEMPOOL_TO_BPID(mi->pool);
 551                                 rte_mbuf_refcnt_update(mi, 1);
 552                         }
 553                         prev_seg = cur_seg;
 554                         cur_seg = cur_seg->next;
 555                         prev_seg->next = NULL;
 556                         rte_pktmbuf_free(prev_seg);
 557                 }
 558                 if (cur_seg == NULL) {
 559                         sg_temp->final = 1;
 560                         cpu_to_hw_sg(sg_temp);
 561                         break;
 562                 }
 563                 cpu_to_hw_sg(sg_temp);
 564         }
 565         return 0;
 566 }
 567
 568 /* Handle mbufs which are not segmented (non SG) */
 569 static inline void
 570 tx_on_dpaa_pool_unsegmented(struct rte_mbuf *mbuf,
 571                             struct dpaa_bp_info *bp_info,
 572                             struct qm_fd *fd_arr)
 573 {
 574         struct rte_mbuf *mi = NULL;
 575
 576         if (RTE_MBUF_DIRECT(mbuf)) {
 577                 if (rte_mbuf_refcnt_read(mbuf) > 1) {
 578                         /* In case of direct mbuf and mbuf being cloned,
 579                          * BMAN should _not_ release buffer.
 580                          */
 581                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 582                         /* Buffer should be releasd by EAL */
 583                         rte_mbuf_refcnt_update(mbuf, -1);
 584                 } else {
 585                         /* In case of direct mbuf and no cloning, mbuf can be
 586                          * released by BMAN.
 587                          */
 588                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 589                 }
 590         } else {
 591                 /* This is data-containing core mbuf: 'mi' */
 592                 mi = rte_mbuf_from_indirect(mbuf);
 593                 if (rte_mbuf_refcnt_read(mi) > 1) {
 594                         /* In case of indirect mbuf, and mbuf being cloned,
 595                          * BMAN should _not_ release it and let EAL release
 596                          * it through pktmbuf_free below.
 597                          */
 598                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, 0xff);
 599                 } else {
 600                         /* In case of indirect mbuf, and no cloning, core mbuf
 601                          * should be released by BMAN.
 602                          * Increate refcnt of core mbuf so that when
 603                          * pktmbuf_free is called and mbuf is released, EAL
 604                          * doesn't try to release core mbuf which would have
 605                          * been released by BMAN.
 606                          */
 607                         rte_mbuf_refcnt_update(mi, 1);
 608                         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, bp_info->bpid);
 609                 }
 610                 rte_pktmbuf_free(mbuf);
 611         }
 612
 613         if (mbuf->ol_flags & DPAA_TX_CKSUM_OFFLOAD_MASK) {
 614                 if (mbuf->data_off < (DEFAULT_TX_ICEOF +
 615                     sizeof(struct dpaa_eth_parse_results_t))) {
 616                         DPAA_DP_LOG(DEBUG, "Checksum offload Err: "
 617                                 "Not enough Headroom "
 618                                 "space for correct Checksum offload."
 619                                 "So Calculating checksum in Software.");
 620                         dpaa_checksum(mbuf);
 621                 } else {
 622                         dpaa_checksum_offload(mbuf, fd_arr, mbuf->buf_addr);
 623                 }
 624         }
 625 }
 626
 627 /* Handle all mbufs on dpaa BMAN managed pool */
 628 static inline uint16_t
 629 tx_on_dpaa_pool(struct rte_mbuf *mbuf,
 630                 struct dpaa_bp_info *bp_info,
 631                 struct qm_fd *fd_arr)
 632 {
 633         DPAA_DP_LOG(DEBUG, "BMAN offloaded buffer, mbuf: %p", mbuf);
 634
 635         if (mbuf->nb_segs == 1) {
 636                 /* Case for non-segmented buffers */
 637                 tx_on_dpaa_pool_unsegmented(mbuf, bp_info, fd_arr);
 638         } else if (mbuf->nb_segs > 1 &&
 639                    mbuf->nb_segs <= DPAA_SGT_MAX_ENTRIES) {
 640                 if (dpaa_eth_mbuf_to_sg_fd(mbuf, fd_arr, bp_info->bpid)) {
 641                         DPAA_PMD_DEBUG("Unable to create Scatter Gather FD");
 642                         return 1;
 643                 }
 644         } else {
 645                 DPAA_PMD_DEBUG("Number of Segments not supported");
 646                 return 1;
 647         }
 648
 649         return 0;
 650 }
 651
 652 /* Handle all mbufs on an external pool (non-dpaa) */
 653 static inline uint16_t
 654 tx_on_external_pool(struct qman_fq *txq, struct rte_mbuf *mbuf,
 655                     struct qm_fd *fd_arr)
 656 {
 657         struct dpaa_if *dpaa_intf = txq->dpaa_intf;
 658         struct rte_mbuf *dmable_mbuf;
 659
 660         DPAA_DP_LOG(DEBUG, "Non-BMAN offloaded buffer."
 661                     "Allocating an offloaded buffer");
 662         dmable_mbuf = dpaa_get_dmable_mbuf(mbuf, dpaa_intf);
 663         if (!dmable_mbuf) {
 664                 DPAA_DP_LOG(DEBUG, "no dpaa buffers.");
 665                 return 1;
 666         }
 667
 668         DPAA_MBUF_TO_CONTIG_FD(mbuf, fd_arr, dpaa_intf->bp_info->bpid);
 669
 670         return 0;
 671 }
 672
 673 uint16_t
 674 dpaa_eth_queue_tx(void *q, struct rte_mbuf **bufs, uint16_t nb_bufs)
 675 {
 676         struct rte_mbuf *mbuf, *mi = NULL;
 677         struct rte_mempool *mp;
 678         struct dpaa_bp_info *bp_info;
 679         struct qm_fd fd_arr[MAX_TX_RING_SLOTS];
 680         uint32_t frames_to_send, loop, i = 0;
 681         uint16_t state;
 682         int ret;
 683
 684         ret = rte_dpaa_portal_init((void *)0);
 685         if (ret) {
 686                 DPAA_PMD_ERR("Failure in affining portal");
 687                 return 0;
 688         }
 689
 690         DPAA_DP_LOG(DEBUG, "Transmitting %d buffers on queue: %p", nb_bufs, q);
 691
 692         while (nb_bufs) {
 693                 frames_to_send = (nb_bufs >> 3) ? MAX_TX_RING_SLOTS : nb_bufs;
 694                 for (loop = 0; loop < frames_to_send; loop++, i++) {
 695                         mbuf = bufs[i];
 696                         if (RTE_MBUF_DIRECT(mbuf)) {
 697                                 mp = mbuf->pool;
 698                         } else {
 699                                 mi = rte_mbuf_from_indirect(mbuf);
 700                                 mp = mi->pool;
 701                         }
 702
 703                         bp_info = DPAA_MEMPOOL_TO_POOL_INFO(mp);
 704                         if (likely(mp->ops_index == bp_info->dpaa_ops_index)) {
 705                                 state = tx_on_dpaa_pool(mbuf, bp_info,
 706                                                         &fd_arr[loop]);
 707                                 if (unlikely(state)) {
 708                                         /* Set frames_to_send & nb_bufs so
 709                                          * that packets are transmitted till
 710                                          * previous frame.
 711                                          */
 712                                         frames_to_send = loop;
 713                                         nb_bufs = loop;
 714                                         goto send_pkts;
 715                                 }
 716                         } else {
 717                                 state = tx_on_external_pool(q, mbuf,
 718                                                             &fd_arr[loop]);
 719                                 if (unlikely(state)) {
 720                                         /* Set frames_to_send & nb_bufs so
 721                                          * that packets are transmitted till
 722                                          * previous frame.
 723                                          */
 724                                         frames_to_send = loop;
 725                                         nb_bufs = loop;
 726                                         goto send_pkts;
 727                                 }
 728                         }
 729                 }
 730
 731 send_pkts:
 732                 loop = 0;
 733                 while (loop < frames_to_send) {
 734                         loop += qman_enqueue_multi(q, &fd_arr[loop],
 735                                         frames_to_send - loop);
 736                 }
 737                 nb_bufs -= frames_to_send;
 738         }
 739
 740         DPAA_DP_LOG(DEBUG, "Transmitted %d buffers on queue: %p", i, q);
 741
 742         return i;
 743 }
 744
 745 uint16_t dpaa_eth_tx_drop_all(void *q  __rte_unused,
 746                               struct rte_mbuf **bufs __rte_unused,
 747                 uint16_t nb_bufs __rte_unused)
 748 {
 749         DPAA_DP_LOG(DEBUG, "Drop all packets");
 750
 751         /* Drop all incoming packets. No need to free packets here
 752          * because the rte_eth f/w frees up the packets through tx_buffer
 753          * callback in case this functions returns count less than nb_bufs
 754          */
 755         return 0;
 756 }