netdev - [PATCH net-next v2 1/7] net: pcs: xpcs: add specific vendor supoprt for Wangxun 10Gb NICs

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Date: Tue,  8 Aug 2023 10:17:02 +0800
From: Jiawen Wu <jiawenwu@...stnetic.com>
To: netdev@...r.kernel.org,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk,
	Jose.Abreu@...opsys.com,
	rmk+kernel@...linux.org.uk
Cc: mengyuanlou@...-swift.com,
	Jiawen Wu <jiawenwu@...stnetic.com>
Subject: [PATCH net-next v2 1/7] 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. The
vendor identification of wangxun devices is added by comparing the name
of mii bus.

And interrupt mode is used in Wangxun devices, so make it to be the first
specific configuration.

Signed-off-by: Jiawen Wu <jiawenwu@...stnetic.com>
---
 drivers/net/pcs/pcs-xpcs.c   | 10 +++++++++-
 include/linux/pcs/pcs-xpcs.h |  4 ++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 44b037646865..88c5e36735b6 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -238,6 +238,12 @@ static int xpcs_write_vpcs(struct dw_xpcs *xpcs, int reg, u16 val)
 	return xpcs_write_vendor(xpcs, MDIO_MMD_PCS, reg, val);
 }
 
+static void xpcs_dev_flag(struct dw_xpcs *xpcs)
+{
+	if (!strcmp(xpcs->mdiodev->bus->name, "txgbe_pcs_mdio_bus"))
+		xpcs->dev_flag = DW_DEV_TXGBE;
+}
+
 static int xpcs_poll_reset(struct dw_xpcs *xpcs, int dev)
 {
 	/* Poll until the reset bit clears (50ms per retry == 0.6 sec) */
@@ -1284,12 +1290,14 @@ static struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev,
 			goto out;
 		}
 
+		xpcs_dev_flag(xpcs);
 		xpcs->pcs.ops = &xpcs_phylink_ops;
 		xpcs->pcs.neg_mode = true;
 		if (compat->an_mode == DW_10GBASER)
 			return xpcs;
 
-		xpcs->pcs.poll = true;
+		if (xpcs->dev_flag != DW_DEV_TXGBE)
+			xpcs->pcs.poll = true;
 
 		ret = xpcs_soft_reset(xpcs, compat);
 		if (ret)
diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h
index ff99cf7a5d0d..29ca4c12d044 100644
--- a/include/linux/pcs/pcs-xpcs.h
+++ b/include/linux/pcs/pcs-xpcs.h
@@ -20,12 +20,16 @@
 #define DW_AN_C37_1000BASEX		4
 #define DW_10GBASER			5
 
+/* 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);
-- 
2.27.0