linux-kernel - [PATCH net-next 06/10] net: renesas: rswitch: add MAC address filtering

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Message-Id: <20251106-add_l3_routing-v1-6-dcbb8368ca54@renesas.com>
Date: Thu, 06 Nov 2025 13:55:30 +0100
From: Michael Dege <michael.dege@...esas.com>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Richard Cochran <richardcochran@...il.com>, 
 Niklas Söderlund <niklas.soderlund@...natech.se>, 
 Paul Barker <paul@...rker.dev>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Geert Uytterhoeven <geert+renesas@...der.be>, 
 Magnus Damm <magnus.damm@...il.com>
Cc: netdev@...r.kernel.org, linux-renesas-soc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 Nikita Yushchenko <nikita.yoush@...entembedded.com>, 
 Christophe JAILLET <christophe.jaillet@...adoo.fr>, 
 Michael Dege <michael.dege@...esas.com>
Subject: [PATCH net-next 06/10] net: renesas: rswitch: add MAC address
 filtering

Enable MAC address filtering in Rswitch HW.

Signed-off-by: Nikita Yushchenko <nikita.yoush@...entembedded.com>
Signed-off-by: Michael Dege <michael.dege@...esas.com>
---
 drivers/net/ethernet/renesas/rswitch.h      | 23 +++++++++++++++++++++++
 drivers/net/ethernet/renesas/rswitch_main.c |  8 ++++++++
 2 files changed, 31 insertions(+)

diff --git a/drivers/net/ethernet/renesas/rswitch.h b/drivers/net/ethernet/renesas/rswitch.h
index a65ba10ae435..ac32091b7991 100644
--- a/drivers/net/ethernet/renesas/rswitch.h
+++ b/drivers/net/ethernet/renesas/rswitch.h
@@ -767,6 +767,29 @@ enum link_speed_conf {

 #define MLVC_PLV		BIT(16)

+#define	MRAFC_MSRAREP		BIT(26)
+#define	MRAFC_NSAREP		BIT(25)
+#define	MRAFC_SDSFREP		BIT(24)
+#define	MRAFC_NDAREP		BIT(23)
+#define	MRAFC_BCACP		BIT(22)
+#define	MRAFC_MCACP		BIT(21)
+#define	MRAFC_BSTENP		BIT(20)
+#define	MRAFC_MSTENP		BIT(19)
+#define	MRAFC_BCENP		BIT(18)
+#define	MRAFC_MCENP		BIT(17)
+#define	MRAFC_UCENP		BIT(16)
+#define	MRAFC_MSAREE		BIT(10)
+#define	MRAFC_NSAREE		BIT(9)
+#define	MRAFC_SDSFREE		BIT(8)
+#define	MRAFC_NDAREE		BIT(7)
+#define	MRAFC_BCADE		BIT(6)
+#define	MRAFC_MCADE		BIT(5)
+#define	MRAFC_BSTENE		BIT(4)
+#define	MRAFC_MSTENE		BIT(3)
+#define	MRAFC_BCENE		BIT(2)
+#define	MRAFC_MCENE		BIT(1)
+#define	MRAFC_UCENE		BIT(0)
+
 /* GWCA */
 enum rswitch_gwca_mode {
 	GWMC_OPC_RESET,
diff --git a/drivers/net/ethernet/renesas/rswitch_main.c b/drivers/net/ethernet/renesas/rswitch_main.c
index dd9a0e7a9d74..d32d4d18606d 100644
--- a/drivers/net/ethernet/renesas/rswitch_main.c
+++ b/drivers/net/ethernet/renesas/rswitch_main.c
@@ -1203,6 +1203,13 @@ static void rswitch_etha_enable_mii(struct rswitch_etha *etha)
 		       FIELD_PREP(MPIC_PLSPP, etha->link_pin));
 }

+static void rswitch_etha_set_MAC_addr_filter(struct rswitch_etha *etha)
+{
+	/* Enable broad-/multi-/uni-cast reception of eMAC and pMAC frames */
+	iowrite32(MRAFC_BCENE | MRAFC_MCENE | MRAFC_UCENE | MRAFC_BCENP |
+		  MRAFC_MCENP | MRAFC_UCENP, etha->addr + MRAFC);
+}
+
 static int rswitch_etha_hw_init(struct rswitch_etha *etha, const u8 *mac)
 {
 	int err;
@@ -1217,6 +1224,7 @@ static int rswitch_etha_hw_init(struct rswitch_etha *etha, const u8 *mac)
 	iowrite32(EAVCC_VEM_SC_TAG, etha->addr + EAVCC);
 	rswitch_rmac_setting(etha, mac);
 	rswitch_etha_enable_mii(etha);
+	rswitch_etha_set_MAC_addr_filter(etha);

 	err = rswitch_etha_wait_link_verification(etha);
 	if (err < 0)

-- 
2.43.0