net/qede/base: add API to configure coalescing for VF queues

Add API for PF to configure coalescing for VF queues.

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>

diff --git a/drivers/net/qede/base/ecore_iov_api.h b/drivers/net/qede/base/ecore_iov_api.h
index 50cb3f2..4fce6b6 100644 (file)
--- a/drivers/net/qede/base/ecore_iov_api.h
+++ b/drivers/net/qede/base/ecore_iov_api.h
@@ -693,8 +693,29 @@ bool ecore_iov_is_vf_started(struct ecore_hwfn *p_hwfn,
  * @return - rate in Mbps
  */
 int ecore_iov_get_vf_min_rate(struct ecore_hwfn *p_hwfn, int vfid);
+
 #endif
 
+/**
+ * @brief ecore_pf_configure_vf_queue_coalesce - PF configure coalesce
+ *    parameters of VFs for Rx and Tx queue.
+ *    While the API allows setting coalescing per-qid, all queues sharing a SB
+ *    should be in same range [i.e., either 0-0x7f, 0x80-0xff or 0x100-0x1ff]
+ *    otherwise configuration would break.
+ *
+ * @param p_hwfn
+ * @param rx_coal - Rx Coalesce value in micro seconds.
+ * @param tx_coal - TX Coalesce value in micro seconds.
+ * @param vf_id
+ * @param qid
+ *
+ * @return int
+ **/
+enum _ecore_status_t
+ecore_iov_pf_configure_vf_queue_coalesce(struct ecore_hwfn *p_hwfn,
+                                        u16 rx_coal, u16 tx_coal,
+                                        u16 vf_id, u16 qid);
+
 /**
  * @brief - Given a VF index, return index of next [including that] active VF.
  *

diff --git a/drivers/net/qede/base/ecore_sriov.c b/drivers/net/qede/base/ecore_sriov.c
index 1ec6451..3f500d3 100644 (file)
--- a/drivers/net/qede/base/ecore_sriov.c
+++ b/drivers/net/qede/base/ecore_sriov.c
@@ -3475,6 +3475,7 @@ static void ecore_iov_vf_pf_set_coalesce(struct ecore_hwfn *p_hwfn,
                                   vf->abs_vf_id, vf->vf_queues[qid].fw_rx_qid);
                        goto out;
                }
+               vf->rx_coal = rx_coal;
        }
 
        /* TODO - in future, it might be possible to pass this in a per-cid
@@ -3499,6 +3500,7 @@ static void ecore_iov_vf_pf_set_coalesce(struct ecore_hwfn *p_hwfn,
                                goto out;
                        }
                }
+               vf->tx_coal = tx_coal;
        }
 
        status = PFVF_STATUS_SUCCESS;
@@ -3507,6 +3509,93 @@ out:
                               sizeof(struct pfvf_def_resp_tlv), status);
 }
 
+enum _ecore_status_t
+ecore_iov_pf_configure_vf_queue_coalesce(struct ecore_hwfn *p_hwfn,
+                                        u16 rx_coal, u16 tx_coal,
+                                        u16 vf_id, u16 qid)
+{
+       struct ecore_queue_cid *p_cid;
+       struct ecore_vf_info *vf;
+       struct ecore_ptt *p_ptt;
+       int i, rc = 0;
+
+       if (!ecore_iov_is_valid_vfid(p_hwfn, vf_id, true, true)) {
+               DP_NOTICE(p_hwfn, true,
+                         "VF[%d] - Can not set coalescing: VF is not active\n",
+                         vf_id);
+               return ECORE_INVAL;
+       }
+
+       vf = &p_hwfn->pf_iov_info->vfs_array[vf_id];
+       p_ptt = ecore_ptt_acquire(p_hwfn);
+       if (!p_ptt)
+               return ECORE_AGAIN;
+
+       if (!ecore_iov_validate_rxq(p_hwfn, vf, qid,
+                                   ECORE_IOV_VALIDATE_Q_ENABLE) &&
+           rx_coal) {
+               DP_ERR(p_hwfn, "VF[%d]: Invalid Rx queue_id = %d\n",
+                      vf->abs_vf_id, qid);
+               goto out;
+       }
+
+       if (!ecore_iov_validate_txq(p_hwfn, vf, qid,
+                                   ECORE_IOV_VALIDATE_Q_ENABLE) &&
+           tx_coal) {
+               DP_ERR(p_hwfn, "VF[%d]: Invalid Tx queue_id = %d\n",
+                      vf->abs_vf_id, qid);
+               goto out;
+       }
+
+       DP_VERBOSE(p_hwfn, ECORE_MSG_IOV,
+                  "VF[%d]: Setting coalesce for VF rx_coal = %d, tx_coal = %d at queue = %d\n",
+                  vf->abs_vf_id, rx_coal, tx_coal, qid);
+
+       if (rx_coal) {
+               p_cid = ecore_iov_get_vf_rx_queue_cid(p_hwfn, vf,
+                                                     &vf->vf_queues[qid]);
+
+               rc = ecore_set_rxq_coalesce(p_hwfn, p_ptt, rx_coal, p_cid);
+               if (rc != ECORE_SUCCESS) {
+                       DP_VERBOSE(p_hwfn, ECORE_MSG_IOV,
+                                  "VF[%d]: Unable to set rx queue = %d coalesce\n",
+                                  vf->abs_vf_id, vf->vf_queues[qid].fw_rx_qid);
+                       goto out;
+               }
+               vf->rx_coal = rx_coal;
+       }
+
+       /* TODO - in future, it might be possible to pass this in a per-cid
+        * granularity. For now, do this for all Tx queues.
+        */
+       if (tx_coal) {
+               struct ecore_vf_queue *p_queue = &vf->vf_queues[qid];
+
+               for (i = 0; i < MAX_QUEUES_PER_QZONE; i++) {
+                       if (p_queue->cids[i].p_cid == OSAL_NULL)
+                               continue;
+
+                       if (!p_queue->cids[i].b_is_tx)
+                               continue;
+
+                       rc = ecore_set_txq_coalesce(p_hwfn, p_ptt, tx_coal,
+                                                   p_queue->cids[i].p_cid);
+                       if (rc != ECORE_SUCCESS) {
+                               DP_VERBOSE(p_hwfn, ECORE_MSG_IOV,
+                                          "VF[%d]: Unable to set tx queue coalesce\n",
+                                          vf->abs_vf_id);
+                               goto out;
+                       }
+               }
+               vf->tx_coal = tx_coal;
+       }
+
+out:
+       ecore_ptt_release(p_hwfn, p_ptt);
+
+       return rc;
+}
+
 static enum _ecore_status_t
 ecore_iov_vf_flr_poll_dorq(struct ecore_hwfn *p_hwfn,
                           struct ecore_vf_info *p_vf, struct ecore_ptt *p_ptt)

diff --git a/drivers/net/qede/base/ecore_sriov.h b/drivers/net/qede/base/ecore_sriov.h
index 1750f0d..ade74c9 100644 (file)
--- a/drivers/net/qede/base/ecore_sriov.h
+++ b/drivers/net/qede/base/ecore_sriov.h
@@ -133,6 +133,9 @@ struct ecore_vf_info {
        u8                      num_rxqs;
        u8                      num_txqs;
 
+       u16                     rx_coal;
+       u16                     tx_coal;
+
        u8                      num_sbs;
 
        u8                      num_mac_filters;