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Message-ID: <20240604031020.2313175-1-jackie.jone@alliedtelesis.co.nz>
Date: Tue, 4 Jun 2024 15:10:20 +1200
From: jackie.jone@...iedtelesis.co.nz
To: davem@...emloft.net
Cc: jesse.brandeburg@...el.com,
anthony.l.nguyen@...el.com,
kuba@...nel.org,
intel-wired-lan@...ts.osuosl.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
chris.packham@...iedtelesis.co.nz,
jackie.jone@...iedtelesis.co.nz
Subject: [PATCH] igb: Add MII write support
From: Jackie Jone <jackie.jone@...iedtelesis.co.nz>
To facilitate running PHY parametric tests, add support for the SIOCSMIIREG
ioctl. This allows a userspace application to write to the PHY registers
to enable the test modes.
Signed-off-by: Jackie Jone <jackie.jone@...iedtelesis.co.nz>
---
drivers/net/ethernet/intel/igb/igb_main.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 03a4da6a1447..7fbfcf01fbf9 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -8977,6 +8977,10 @@ static int igb_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
return -EIO;
break;
case SIOCSMIIREG:
+ if (igb_write_phy_reg(&adapter->hw, data->reg_num & 0x1F,
+ data->val_in))
+ return -EIO;
+ break;
default:
return -EOPNOTSUPP;
}
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