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net: pcs: xpcs: add specific vendor supoprt for Wangxun 10Gb NICs

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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>
This commit is contained in:
Jiawen Wu
2023-08-23 14:19:28 +08:00
committed by David S. Miller
parent 1355fe134a
commit d55595f04d
2 changed files with 39 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/pcs/pcs-xpcs.c
View File

@@ -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;
if (xpcs->dev_flag != DW_DEV_TXGBE) {
ret = xpcs_soft_reset(xpcs, compat);
if (ret)
goto out;
}
return xpcs;
}

7
include/linux/pcs/pcs-xpcs.h
View File

@@ -20,12 +20,19 @@
#define DW_AN_C37_1000BASEX 4
#define DW_10GBASER 5
/* device vendor OUI */
#define DW_OUI_WX 0x0018fc80
/* dev_flag */
#define DW_DEV_TXGBE BIT(0)
struct xpcs_id;
struct dw_xpcs {
struct mdio_device *mdiodev;
const struct xpcs_id *id;
struct phylink_pcs pcs;
int dev_flag;
};
int xpcs_get_an_mode(struct dw_xpcs *xpcs, phy_interface_t interface);