From: Hariprasad Kelam <hkelam@marvell.com>
To: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <kuba@kernel.org>, <davem@davemloft.net>, <sgoutham@marvell.com>,
<gakula@marvell.com>, <jerinj@marvell.com>,
<lcherian@marvell.com>, <sbhatta@marvell.com>,
<hkelam@marvell.com>, <naveenm@marvell.com>,
<edumazet@google.com>, <pabeni@redhat.com>
Subject: [net PATCH] Octeontx2-af: fix pause frame configuration in GMP mode
Date: Tue, 26 Mar 2024 10:57:20 +0530 [thread overview]
Message-ID: <20240326052720.4441-1-hkelam@marvell.com> (raw)
The Octeontx2 MAC block (CGX) has separate data paths (SMU and GMP) for
different speeds, allowing for efficient data transfer.
The previous patch which added pause frame configuration has a bug due
to which pause frame feature is not working in GMP mode.
This patch fixes the issue by configurating appropriate registers.
Fixes: f7e086e754fe ("octeontx2-af: Pause frame configuration at cgx")
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
---
drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
index 3c0f55b3e48e..b86f3224f0b7 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c
@@ -808,6 +808,11 @@ static int cgx_lmac_enadis_pause_frm(void *cgxd, int lmac_id,
if (!is_lmac_valid(cgx, lmac_id))
return -ENODEV;
+ cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
+ cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
+ cfg |= rx_pause ? CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK : 0x0;
+ cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
+
cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
cfg |= rx_pause ? CGX_SMUX_RX_FRM_CTL_CTL_BCK : 0x0;
--
2.17.1
next reply other threads:[~2024-03-26 5:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-26 5:27 Hariprasad Kelam [this message]
2024-03-27 14:26 ` [net PATCH] Octeontx2-af: fix pause frame configuration in GMP mode Simon Horman
2024-03-28 11:00 ` patchwork-bot+netdevbpf
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