[PATCH 2/2] net: thunderx: Fix TL4 configuration for secondary Qsets

[sunil . kovvuri]

From: Sunil Goutham <sgout...@cavium.com>

TL4 calculation for a given SQ of secondary Qsets is incorrect
and goes out of bounds and also for some SQ's TL4 chosen will
transmit data via a different BGX interface and not same as
primary Qset's interface.

This patch fixes this issue.

Signed-off-by: Sunil Goutham <sgout...@cavium.com>
---
 drivers/net/ethernet/cavium/thunder/nic_main.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c 
b/drivers/net/ethernet/cavium/thunder/nic_main.c
index 95f17f8..16ed203 100644
--- a/drivers/net/ethernet/cavium/thunder/nic_main.c
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c
@@ -499,6 +499,7 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic,
        u32 rr_quantum;
        u8 sq_idx = sq->sq_num;
        u8 pqs_vnic;
+       int svf;
 
        if (sq->sqs_mode)
                pqs_vnic = nic->pqs_vf[vnic];
@@ -511,10 +512,19 @@ static void nic_tx_channel_cfg(struct nicpf *nic, u8 vnic,
        /* 24 bytes for FCS, IPG and preamble */
        rr_quantum = ((NIC_HW_MAX_FRS + 24) / 4);
 
-       tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX);
+       if (!sq->sqs_mode) {
+               tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX);
+       } else {
+               for (svf = 0; svf < MAX_SQS_PER_VF; svf++) {
+                       if (nic->vf_sqs[pqs_vnic][svf] == vnic)
+                               break;
+               }
+               tl4 = (MAX_LMAC_PER_BGX * NIC_TL4_PER_LMAC);
+               tl4 += (lmac * NIC_TL4_PER_LMAC * MAX_SQS_PER_VF);
+               tl4 += (svf * NIC_TL4_PER_LMAC);
+               tl4 += (bgx * NIC_TL4_PER_BGX);
+       }
        tl4 += sq_idx;
-       if (sq->sqs_mode)
-               tl4 += vnic * 8;
 
        tl3 = tl4 / (NIC_MAX_TL4 / NIC_MAX_TL3);
        nic_reg_write(nic, NIC_PF_QSET_0_127_SQ_0_7_CFG2 |
-- 
2.7.4