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| author | Jiawen Wu <jiawenwu@trustnetic.com> | 2023-08-23 08:19:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-25 08:42:58 +0200 |
| commit | d55595f04dcc8bd6f6ff33f451dda8de3f1232da (patch) | |
| tree | 32509f212fcacc45da21a5675f7dc7deb74e39a2 /drivers/net/pcs | |
| parent | Merge branch 'tools-ynl-handful-of-forward-looking-updates' (diff) | |
| download | linux-d55595f04dcc8bd6f6ff33f451dda8de3f1232da.tar.xz linux-d55595f04dcc8bd6f6ff33f451dda8de3f1232da.zip | |
net: pcs: xpcs: add specific vendor supoprt for Wangxun 10Gb NICs
Since Wangxun 10Gb NICs require some special configuration on the IP of
Synopsys Designware XPCS, introduce dev_flag for different vendors. Read
OUI from device identifier registers, to detect Wangxun devices.
And xpcs_soft_reset() is skipped to avoid the reset of device identifier
registers.
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/pcs')
| -rw-r--r-- | drivers/net/pcs/pcs-xpcs.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c index 44b037646865..8b56b2f9f24d 100644 --- a/drivers/net/pcs/pcs-xpcs.c +++ b/drivers/net/pcs/pcs-xpcs.c @@ -238,6 +238,29 @@ static int xpcs_write_vpcs(struct dw_xpcs *xpcs, int reg, u16 val) return xpcs_write_vendor(xpcs, MDIO_MMD_PCS, reg, val); } +static int xpcs_dev_flag(struct dw_xpcs *xpcs) +{ + int ret, oui; + + ret = xpcs_read(xpcs, MDIO_MMD_PMAPMD, MDIO_DEVID1); + if (ret < 0) + return ret; + + oui = ret; + + ret = xpcs_read(xpcs, MDIO_MMD_PMAPMD, MDIO_DEVID2); + if (ret < 0) + return ret; + + ret = (ret >> 10) & 0x3F; + oui |= ret << 16; + + if (oui == DW_OUI_WX) + xpcs->dev_flag = DW_DEV_TXGBE; + + return 0; +} + static int xpcs_poll_reset(struct dw_xpcs *xpcs, int dev) { /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */ @@ -1284,6 +1307,10 @@ static struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev, goto out; } + ret = xpcs_dev_flag(xpcs); + if (ret) + goto out; + xpcs->pcs.ops = &xpcs_phylink_ops; xpcs->pcs.neg_mode = true; if (compat->an_mode == DW_10GBASER) @@ -1291,9 +1318,11 @@ static struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev, xpcs->pcs.poll = true; - ret = xpcs_soft_reset(xpcs, compat); - if (ret) - goto out; + if (xpcs->dev_flag != DW_DEV_TXGBE) { + ret = xpcs_soft_reset(xpcs, compat); + if (ret) + goto out; + } return xpcs; } |