netdev - [net-next,v2 4/6] ravb: Use the max frame size from hardware info for RZ/G2L

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Date: Tue, 27 Feb 2024 23:33:03 +0100
From: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
To: Sergey Shtylyov <s.shtylyov@....ru>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	netdev@...r.kernel.org
Cc: linux-renesas-soc@...r.kernel.org,
	Niklas Söderlund <niklas.soderlund+renesas@...natech.se>,
	Paul Barker <paul.barker.ct@...renesas.com>
Subject: [net-next,v2 4/6] ravb: Use the max frame size from hardware info for RZ/G2L

Remove the define describing the RZ/G2L maximum frame size and only use
the information in the hardware information struct. This will make it
easier to merge the R-Car and RZ/G2L code paths.

There is no functional change as both the define and the maximum frame
length in the hardware information is set to 8K.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>
Reviewed-by: Paul Barker <paul.barker.ct@...renesas.com>
---
 drivers/net/ethernet/renesas/ravb.h      | 1 -
 drivers/net/ethernet/renesas/ravb_main.c | 5 +++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 751bb29cd488..7fa60fccb6ea 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -1017,7 +1017,6 @@ enum CSR2_BIT {
 
 #define RX_BUF_SZ	(2048 - ETH_FCS_LEN + sizeof(__sum16))
 
-#define GBETH_RX_BUFF_MAX 8192
 #define GBETH_RX_DESC_DATA_SIZE 4080
 
 struct ravb_tstamp_skb {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index e6b025058847..45383635e8e2 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -568,7 +568,7 @@ static void ravb_emac_init_gbeth(struct net_device *ndev)
 	}
 
 	/* Receive frame limit set register */
-	ravb_write(ndev, GBETH_RX_BUFF_MAX + ETH_FCS_LEN, RFLR);
+	ravb_write(ndev, priv->info->rx_max_frame_size + ETH_FCS_LEN, RFLR);
 
 	/* EMAC Mode: PAUSE prohibition; Duplex; TX; RX; CRC Pass Through */
 	ravb_write(ndev, ECMR_ZPF | ((priv->duplex > 0) ? ECMR_DM : 0) |
@@ -629,6 +629,7 @@ static void ravb_emac_init(struct net_device *ndev)
 
 static int ravb_dmac_init_gbeth(struct net_device *ndev)
 {
+	struct ravb_private *priv = netdev_priv(ndev);
 	int error;
 
 	error = ravb_ring_init(ndev, RAVB_BE);
@@ -642,7 +643,7 @@ static int ravb_dmac_init_gbeth(struct net_device *ndev)
 	ravb_write(ndev, 0x60000000, RCR);
 
 	/* Set Max Frame Length (RTC) */
-	ravb_write(ndev, 0x7ffc0000 | GBETH_RX_BUFF_MAX, RTC);
+	ravb_write(ndev, 0x7ffc0000 | priv->info->rx_max_frame_size, RTC);
 
 	/* Set FIFO size */
 	ravb_write(ndev, 0x00222200, TGC);
-- 
2.43.2