diff options
| author |   Sunil Goutham <sgoutham@marvell.com> | 2021-07-30 17:19:14 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-08-02 10:47:12 +0100 |
| commit | c39830a4ce4df09ddef29ac388b062537c559228 (patch) | |
| tree | 3f3b397fadd51f98f12b7d4afbc06027fcbec95d /drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | |
| parent | octeontx2-af: cn10k: DWRR MTU configuration (diff) | |
| download | linux-dev-c39830a4ce4df09ddef29ac388b062537c559228.tar.xz linux-dev-c39830a4ce4df09ddef29ac388b062537c559228.zip | |
octeontx2-pf: cn10k: Config DWRR weight based on MTU
Program SQ, MDQ, TL4 to TL2 transmit scheduler queues' DWRR
weight based on DWRR MTU programmed at NIX_AF_DWRR_RPM_MTU.
The DWRR MTU from admin function is retrieved via mbox.
On OcteaonTx2 silicon, admin function driver responds with DWRR
MTU as '1'. This helps to avoid silicon specific transmit
scheduler DWRR quantum/weight configuration logic.
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c index bb2cfdabf1cd..53db8ebddb5e 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c @@ -2802,6 +2802,7 @@ int rvu_mbox_handler_nix_get_hw_info(struct rvu *rvu, struct msg_req *req, struct nix_hw_info *rsp) { u16 pcifunc = req->hdr.pcifunc; + u64 dwrr_mtu; int blkaddr; blkaddr = rvu_get_blkaddr(rvu, BLKTYPE_NIX, pcifunc); @@ -2814,6 +2815,20 @@ int rvu_mbox_handler_nix_get_hw_info(struct rvu *rvu, struct msg_req *req, rvu_get_lmac_link_max_frs(rvu, &rsp->max_mtu); rsp->min_mtu = NIC_HW_MIN_FRS; + + if (!rvu->hw->cap.nix_common_dwrr_mtu) { + /* Return '1' on OTx2 */ + rsp->rpm_dwrr_mtu = 1; + rsp->sdp_dwrr_mtu = 1; + return 0; + } + + dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_RPM_MTU); + rsp->rpm_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu); + + dwrr_mtu = rvu_read64(rvu, BLKADDR_NIX0, NIX_AF_DWRR_SDP_MTU); + rsp->sdp_dwrr_mtu = convert_dwrr_mtu_to_bytes(dwrr_mtu); + return 0; } |