net/dpaa2: add support for congestion notification
[dpdk.git] / drivers / net / dpaa2 / dpaa2_rxtx.c
index c1ea33a..81c0c28 100644 (file)
@@ -136,7 +136,7 @@ static inline struct rte_mbuf *__attribute__((hot))
 eth_fd_to_mbuf(const struct qbman_fd *fd)
 {
        struct rte_mbuf *mbuf = DPAA2_INLINE_MBUF_FROM_BUF(
-                       DPAA2_GET_FD_ADDR(fd),
+               DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd)),
                     rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size);
 
        /* need to repopulated some of the fields,
@@ -151,10 +151,11 @@ eth_fd_to_mbuf(const struct qbman_fd *fd)
        /* Parse the packet */
        /* parse results are after the private - sw annotation area */
        mbuf->packet_type = dpaa2_dev_rx_parse(
-                       (uint64_t)(DPAA2_GET_FD_ADDR(fd))
+                       (uint64_t)DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd))
                         + DPAA2_FD_PTA_SIZE);
 
-       dpaa2_dev_rx_offload((uint64_t)(DPAA2_GET_FD_ADDR(fd)) +
+       dpaa2_dev_rx_offload((uint64_t)DPAA2_IOVA_TO_VADDR(
+                            DPAA2_GET_FD_ADDR(fd)) +
                             DPAA2_FD_PTA_SIZE, mbuf);
 
        mbuf->next = NULL;
@@ -170,14 +171,14 @@ eth_fd_to_mbuf(const struct qbman_fd *fd)
        return mbuf;
 }
 
-static void __attribute__ ((noinline)) __attribute__((hot))
+static void __rte_noinline __attribute__((hot))
 eth_mbuf_to_fd(struct rte_mbuf *mbuf,
               struct qbman_fd *fd, uint16_t bpid)
 {
        /*Resetting the buffer pool id and offset field*/
        fd->simple.bpid_offset = 0;
 
-       DPAA2_SET_FD_ADDR(fd, (mbuf->buf_addr));
+       DPAA2_SET_FD_ADDR(fd, DPAA2_MBUF_VADDR_TO_IOVA(mbuf));
        DPAA2_SET_FD_LEN(fd, mbuf->data_len);
        DPAA2_SET_FD_BPID(fd, bpid);
        DPAA2_SET_FD_OFFSET(fd, mbuf->data_off);
@@ -191,18 +192,68 @@ eth_mbuf_to_fd(struct rte_mbuf *mbuf,
                DPAA2_GET_FD_BPID(fd), DPAA2_GET_FD_LEN(fd));
 }
 
+
+static inline int __attribute__((hot))
+eth_copy_mbuf_to_fd(struct rte_mbuf *mbuf,
+                   struct qbman_fd *fd, uint16_t bpid)
+{
+       struct rte_mbuf *m;
+       void *mb = NULL;
+
+       if (rte_dpaa2_mbuf_alloc_bulk(
+               rte_dpaa2_bpid_info[bpid].bp_list->mp, &mb, 1)) {
+               PMD_TX_LOG(WARNING, "Unable to allocated DPAA2 buffer");
+               rte_pktmbuf_free(mbuf);
+               return -1;
+       }
+       m = (struct rte_mbuf *)mb;
+       memcpy((char *)m->buf_addr + mbuf->data_off,
+              (void *)((char *)mbuf->buf_addr + mbuf->data_off),
+               mbuf->pkt_len);
+
+       /* Copy required fields */
+       m->data_off = mbuf->data_off;
+       m->ol_flags = mbuf->ol_flags;
+       m->packet_type = mbuf->packet_type;
+       m->tx_offload = mbuf->tx_offload;
+
+       /*Resetting the buffer pool id and offset field*/
+       fd->simple.bpid_offset = 0;
+
+       DPAA2_SET_FD_ADDR(fd, DPAA2_MBUF_VADDR_TO_IOVA(m));
+       DPAA2_SET_FD_LEN(fd, mbuf->data_len);
+       DPAA2_SET_FD_BPID(fd, bpid);
+       DPAA2_SET_FD_OFFSET(fd, mbuf->data_off);
+       DPAA2_SET_FD_ASAL(fd, DPAA2_ASAL_VAL);
+
+       PMD_TX_LOG(DEBUG, " mbuf %p BMAN buf addr %p",
+                  (void *)mbuf, mbuf->buf_addr);
+
+       PMD_TX_LOG(DEBUG, " fdaddr =%lx bpid =%d meta =%d off =%d, len =%d",
+                  DPAA2_GET_FD_ADDR(fd),
+               DPAA2_GET_FD_BPID(fd),
+               rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size,
+               DPAA2_GET_FD_OFFSET(fd),
+               DPAA2_GET_FD_LEN(fd));
+       /*free the original packet */
+       rte_pktmbuf_free(mbuf);
+
+       return 0;
+}
+
 uint16_t
-dpaa2_dev_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+dpaa2_dev_prefetch_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 {
-       /* Function is responsible to receive frames for a given device and VQ*/
+       /* Function receive frames for a given device and VQ*/
        struct dpaa2_queue *dpaa2_q = (struct dpaa2_queue *)queue;
        struct qbman_result *dq_storage;
        uint32_t fqid = dpaa2_q->fqid;
        int ret, num_rx = 0;
        uint8_t is_last = 0, status;
        struct qbman_swp *swp;
-       const struct qbman_fd *fd;
+       const struct qbman_fd *fd[DPAA2_DQRR_RING_SIZE];
        struct qbman_pull_desc pulldesc;
+       struct queue_storage_info_t *q_storage = dpaa2_q->q_storage;
        struct rte_eth_dev *dev = dpaa2_q->dev;
 
        if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
@@ -213,44 +264,51 @@ dpaa2_dev_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
                }
        }
        swp = DPAA2_PER_LCORE_PORTAL;
-       dq_storage = dpaa2_q->q_storage->dq_storage[0];
-
-       qbman_pull_desc_clear(&pulldesc);
-       qbman_pull_desc_set_numframes(&pulldesc,
-                                     (nb_pkts > DPAA2_DQRR_RING_SIZE) ?
-                                      DPAA2_DQRR_RING_SIZE : nb_pkts);
-       qbman_pull_desc_set_fq(&pulldesc, fqid);
-       /* todo optimization - we can have dq_storage_phys available*/
-       qbman_pull_desc_set_storage(&pulldesc, dq_storage,
-                       (dma_addr_t)(dq_storage), 1);
-
-       /*Issue a volatile dequeue command. */
-       while (1) {
-               if (qbman_swp_pull(swp, &pulldesc)) {
-                       PMD_RX_LOG(ERR, "VDQ command is not issued."
-                                  "QBMAN is busy\n");
-                       /* Portal was busy, try again */
-                       continue;
+       if (!q_storage->active_dqs) {
+               q_storage->toggle = 0;
+               dq_storage = q_storage->dq_storage[q_storage->toggle];
+               qbman_pull_desc_clear(&pulldesc);
+               qbman_pull_desc_set_numframes(&pulldesc,
+                                             (nb_pkts > DPAA2_DQRR_RING_SIZE) ?
+                                              DPAA2_DQRR_RING_SIZE : nb_pkts);
+               qbman_pull_desc_set_fq(&pulldesc, fqid);
+               qbman_pull_desc_set_storage(&pulldesc, dq_storage,
+                       (dma_addr_t)(DPAA2_VADDR_TO_IOVA(dq_storage)), 1);
+               if (check_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index)) {
+                       while (!qbman_check_command_complete(swp,
+                              get_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index)))
+                               ;
+                       clear_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index);
                }
-               break;
-       };
-
-       /* Receive the packets till Last Dequeue entry is found with
-        * respect to the above issues PULL command.
+               while (1) {
+                       if (qbman_swp_pull(swp, &pulldesc)) {
+                               PMD_RX_LOG(WARNING, "VDQ command is not issued."
+                                          "QBMAN is busy\n");
+                               /* Portal was busy, try again */
+                               continue;
+                       }
+                       break;
+               }
+               q_storage->active_dqs = dq_storage;
+               q_storage->active_dpio_id = DPAA2_PER_LCORE_DPIO->index;
+               set_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index, dq_storage);
+       }
+       dq_storage = q_storage->active_dqs;
+       /* Check if the previous issued command is completed.
+        * Also seems like the SWP is shared between the Ethernet Driver
+        * and the SEC driver.
         */
+       while (!qbman_check_command_complete(swp, dq_storage))
+               ;
+       if (dq_storage == get_swp_active_dqs(q_storage->active_dpio_id))
+               clear_swp_active_dqs(q_storage->active_dpio_id);
        while (!is_last) {
-               struct rte_mbuf *mbuf;
-               /*Check if the previous issued command is completed.
-                * Also seems like the SWP is shared between the
-                * Ethernet Driver and the SEC driver.
-                */
-               while (!qbman_check_command_complete(swp, dq_storage))
-                       ;
                /* Loop until the dq_storage is updated with
                 * new token by QBMAN
                 */
                while (!qbman_result_has_new_result(swp, dq_storage))
                        ;
+               rte_prefetch0((void *)((uint64_t)(dq_storage + 1)));
                /* Check whether Last Pull command is Expired and
                 * setting Condition for Loop termination
                 */
@@ -261,26 +319,50 @@ dpaa2_dev_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
                        if (unlikely((status & QBMAN_DQ_STAT_VALIDFRAME) == 0))
                                continue;
                }
+               fd[num_rx] = qbman_result_DQ_fd(dq_storage);
 
-               fd = qbman_result_DQ_fd(dq_storage);
-               mbuf = (struct rte_mbuf *)(DPAA2_GET_FD_ADDR(fd)
-                  - rte_dpaa2_bpid_info[DPAA2_GET_FD_BPID(fd)].meta_data_size);
-               /* Prefeth mbuf */
-               rte_prefetch0(mbuf);
                /* Prefetch Annotation address for the parse results */
-               rte_prefetch0((void *)((uint64_t)DPAA2_GET_FD_ADDR(fd)
-                                               + DPAA2_FD_PTA_SIZE + 16));
+               rte_prefetch0((void *)((uint64_t)DPAA2_GET_FD_ADDR(fd[num_rx])
+                               + DPAA2_FD_PTA_SIZE + 16));
 
-               bufs[num_rx] = eth_fd_to_mbuf(fd);
+               bufs[num_rx] = eth_fd_to_mbuf(fd[num_rx]);
                bufs[num_rx]->port = dev->data->port_id;
+               if (dev->data->dev_conf.rxmode.hw_vlan_strip)
+                       rte_vlan_strip(bufs[num_rx]);
 
-               num_rx++;
                dq_storage++;
-       } /* End of Packet Rx loop */
+               num_rx++;
+       }
+
+       if (check_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index)) {
+               while (!qbman_check_command_complete(swp,
+                      get_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index)))
+                       ;
+               clear_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index);
+       }
+       q_storage->toggle ^= 1;
+       dq_storage = q_storage->dq_storage[q_storage->toggle];
+       qbman_pull_desc_clear(&pulldesc);
+       qbman_pull_desc_set_numframes(&pulldesc, DPAA2_DQRR_RING_SIZE);
+       qbman_pull_desc_set_fq(&pulldesc, fqid);
+       qbman_pull_desc_set_storage(&pulldesc, dq_storage,
+                       (dma_addr_t)(DPAA2_VADDR_TO_IOVA(dq_storage)), 1);
+       /* Issue a volatile dequeue command. */
+       while (1) {
+               if (qbman_swp_pull(swp, &pulldesc)) {
+                       PMD_RX_LOG(WARNING, "VDQ command is not issued."
+                                  "QBMAN is busy\n");
+                       continue;
+               }
+               break;
+       }
+       q_storage->active_dqs = dq_storage;
+       q_storage->active_dpio_id = DPAA2_PER_LCORE_DPIO->index;
+       set_swp_active_dqs(DPAA2_PER_LCORE_DPIO->index, dq_storage);
 
        dpaa2_q->rx_pkts += num_rx;
 
-       /*Return the total number of packets received to DPAA2 app*/
+       /* Return the total number of packets received to DPAA2 app */
        return num_rx;
 }
 
@@ -324,6 +406,10 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
 
        /*Clear the unused FD fields before sending*/
        while (nb_pkts) {
+               /*Check if the queue is congested*/
+               if (qbman_result_SCN_state_in_mem(dpaa2_q->cscn))
+                       goto skip_tx;
+
                frames_to_send = (nb_pkts >> 3) ? MAX_TX_RING_SLOTS : nb_pkts;
 
                for (loop = 0; loop < frames_to_send; loop++) {
@@ -331,8 +417,29 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
                        DPAA2_RESET_FD_CTRL((&fd_arr[loop]));
                        DPAA2_SET_FD_FLC((&fd_arr[loop]), NULL);
                        mp = (*bufs)->pool;
-                       bpid = mempool_to_bpid(mp);
-                       eth_mbuf_to_fd(*bufs, &fd_arr[loop], bpid);
+                       /* Not a hw_pkt pool allocated frame */
+                       if (mp->ops_index != priv->bp_list->dpaa2_ops_index) {
+                               PMD_TX_LOG(ERR, "non hw offload bufffer ");
+                               /* alloc should be from the default buffer pool
+                                * attached to this interface
+                                */
+                               if (priv->bp_list) {
+                                       bpid = priv->bp_list->buf_pool.bpid;
+                               } else {
+                                       PMD_TX_LOG(ERR, "errr: why no bpool"
+                                                  " attached");
+                                       num_tx = 0;
+                                       goto skip_tx;
+                               }
+                               if (eth_copy_mbuf_to_fd(*bufs,
+                                                       &fd_arr[loop], bpid)) {
+                                       bufs++;
+                                       continue;
+                               }
+                       } else {
+                               bpid = mempool_to_bpid(mp);
+                               eth_mbuf_to_fd(*bufs, &fd_arr[loop], bpid);
+                       }
                        bufs++;
                }
                loop = 0;
@@ -345,5 +452,6 @@ dpaa2_dev_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
                dpaa2_q->tx_pkts += frames_to_send;
                nb_pkts -= frames_to_send;
        }
+skip_tx:
        return num_tx;
 }