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Message-ID: <20251125075150.13879-7-jonas.gorski@gmail.com>
Date: Tue, 25 Nov 2025 08:51:49 +0100
From: Jonas Gorski <jonas.gorski@...il.com>
To: Florian Fainelli <florian.fainelli@...adcom.com>,
Andrew Lunn <andrew@...n.ch>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Álvaro Fernández Rojas <noltari@...il.com>
Cc: Florian Fainelli <f.fainelli@...il.com>,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH net-next 6/7] net: dsa: b53: fix BCM5325/65 ARL entry VIDs
BCM5325/65's ARL entry registers do not contain the VID, only the search
result register does. ARL entries have a separate VID entry register for
the index into the VLAN table.
So make ARL entry accessors use the VID entry registers instead, and
move the VLAN ID field definition to the search register definition.
Fixes: c45655386e53 ("net: dsa: b53: add support for FDB operations on 5325/5365")
Signed-off-by: Jonas Gorski <jonas.gorski@...il.com>
---
drivers/net/dsa/b53/b53_common.c | 9 +++++++--
drivers/net/dsa/b53/b53_priv.h | 12 ++++++------
drivers/net/dsa/b53/b53_regs.h | 7 +++++--
3 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 09a64812cd84..ac995f36ed95 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1853,19 +1853,24 @@ static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
static void b53_arl_read_entry_25(struct b53_device *dev,
struct b53_arl_entry *ent, u8 idx)
{
+ u8 vid_entry;
u64 mac_vid;
+ b53_read8(dev, B53_ARLIO_PAGE, B53_ARLTBL_VID_ENTRY_25(idx),
+ &vid_entry);
b53_read64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
&mac_vid);
- b53_arl_to_entry_25(ent, mac_vid);
+ b53_arl_to_entry_25(ent, mac_vid, vid_entry);
}
static void b53_arl_write_entry_25(struct b53_device *dev,
const struct b53_arl_entry *ent, u8 idx)
{
+ u8 vid_entry;
u64 mac_vid;
- b53_arl_from_entry_25(&mac_vid, ent);
+ b53_arl_from_entry_25(&mac_vid, &vid_entry, ent);
+ b53_write8(dev, B53_ARLIO_PAGE, B53_ARLTBL_VID_ENTRY_25(idx), vid_entry);
b53_write64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
mac_vid);
}
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 24df3ab64395..ea99e4d322bd 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -341,7 +341,7 @@ static inline void b53_arl_to_entry(struct b53_arl_entry *ent,
}
static inline void b53_arl_to_entry_25(struct b53_arl_entry *ent,
- u64 mac_vid)
+ u64 mac_vid, u8 vid_entry)
{
memset(ent, 0, sizeof(*ent));
ent->is_valid = !!(mac_vid & ARLTBL_VALID_25);
@@ -352,7 +352,7 @@ static inline void b53_arl_to_entry_25(struct b53_arl_entry *ent,
ARLTBL_DATA_PORT_ID_S_25;
if (!is_multicast_ether_addr(ent->mac) && ent->port == B53_CPU_PORT)
ent->port = B53_CPU_PORT_25;
- ent->vid = (mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25;
+ ent->vid = vid_entry;
}
static inline void b53_arl_to_entry_89(struct b53_arl_entry *ent,
@@ -381,7 +381,7 @@ static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
*fwd_entry |= ARLTBL_AGE;
}
-static inline void b53_arl_from_entry_25(u64 *mac_vid,
+static inline void b53_arl_from_entry_25(u64 *mac_vid, u8 *vid_entry,
const struct b53_arl_entry *ent)
{
*mac_vid = ether_addr_to_u64(ent->mac);
@@ -390,14 +390,13 @@ static inline void b53_arl_from_entry_25(u64 *mac_vid,
else
*mac_vid |= ((u64)ent->port << ARLTBL_DATA_PORT_ID_S_25) &
ARLTBL_DATA_PORT_ID_MASK_25;
- *mac_vid |= (u64)(ent->vid & ARLTBL_VID_MASK_25) <<
- ARLTBL_VID_S_65;
if (ent->is_valid)
*mac_vid |= ARLTBL_VALID_25;
if (ent->is_static)
*mac_vid |= ARLTBL_STATIC_25;
if (ent->is_age)
*mac_vid |= ARLTBL_AGE_25;
+ *vid_entry = ent->vid;
}
static inline void b53_arl_from_entry_89(u64 *mac_vid, u32 *fwd_entry,
@@ -422,7 +421,8 @@ static inline void b53_arl_search_to_entry_25(struct b53_arl_entry *ent,
ent->is_age = !!(mac_vid & ARLTBL_AGE_25);
ent->is_static = !!(mac_vid & ARLTBL_STATIC_25);
u64_to_ether_addr(mac_vid, ent->mac);
- ent->vid = (mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25;
+ ent->vid = (mac_vid & ARL_SRCH_RSLT_VID_MASK_25) >>
+ ARL_SRCH_RSLT_VID_S_25;
ent->port = (mac_vid & ARL_SRCH_RSLT_PORT_ID_MASK_25) >>
ARL_SRCH_RSLT_PORT_ID_S_25;
if (is_multicast_ether_addr(ent->mac) && (ext & ARL_SRCH_RSLT_EXT_MC_MII))
diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index 54b1016eb7eb..54a278db67c9 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -329,11 +329,9 @@
#define B53_ARLTBL_MAC_VID_ENTRY(n) ((0x10 * (n)) + 0x10)
#define ARLTBL_MAC_MASK 0xffffffffffffULL
#define ARLTBL_VID_S 48
-#define ARLTBL_VID_MASK_25 0xff
#define ARLTBL_VID_MASK 0xfff
#define ARLTBL_DATA_PORT_ID_S_25 48
#define ARLTBL_DATA_PORT_ID_MASK_25 GENMASK_ULL(53, 48)
-#define ARLTBL_VID_S_65 53
#define ARLTBL_AGE_25 BIT_ULL(61)
#define ARLTBL_STATIC_25 BIT_ULL(62)
#define ARLTBL_VALID_25 BIT_ULL(63)
@@ -353,6 +351,9 @@
#define ARLTBL_STATIC_89 BIT(14)
#define ARLTBL_VALID_89 BIT(15)
+/* BCM5325/BCM565 ARL Table VID Entry N Registers (8 bit) */
+#define B53_ARLTBL_VID_ENTRY_25(n) ((0x2 * (n)) + 0x30)
+
/* Maximum number of bin entries in the ARL for all switches */
#define B53_ARLTBL_MAX_BIN_ENTRIES 4
@@ -380,6 +381,8 @@
#define B53_ARL_SRCH_RSTL_0_MACVID_25 0x24
#define ARL_SRCH_RSLT_PORT_ID_S_25 48
#define ARL_SRCH_RSLT_PORT_ID_MASK_25 GENMASK_ULL(52, 48)
+#define ARL_SRCH_RSLT_VID_S_25 53
+#define ARL_SRCH_RSLT_VID_MASK_25 GENMASK_ULL(60, 53)
/* BCM5325/5365 Search result extend register (8 bit) */
#define B53_ARL_SRCH_RSLT_EXT_25 0x2c
--
2.43.0
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