[PATCH net-next 0/8] net: dsa: b53: add support for BCM5389/97/98 and BCM63XX ARL formats

[PATCH net-next 0/8] net: dsa: b53: add support for BCM5389/97/98 and BCM63XX ARL formats

[Jonas Gorski]

Currently b53 assumes that all switches apart from BCM5325/5365 use the
same ARL formats, but there are actually multiple formats in use.

Older switches use a format apparently introduced with BCM5387/BCM5389,
while newer chips use a format apparently introduced with BCM5395.

Note that these numbers are not linear, BCM5397/BCM5398 use the older
format.

In addition to that the switches integrated into BCM63XX SoCs use their
own format. While accessing these normal read/write ARL entries are the
same format as BCM5389 one, the search format is different.

So in order to support all these different format, split all code
accessing these entries into chip-family specific functions, and collect
them in appropriate arl ops structs to keep the code cleaner.

Sent as net-next since the ARL accesses have never worked before, and
the extensive refactoring might be too much to warrant a fix.

Jonas Gorski (8):
  net: dsa: b53: b53_arl_read{,25}(): use the entry for comparision
  net: dsa: b53: move reading ARL entries into their own function
  net: dsa: b53: move writing ARL entries into their own functions
  net: dsa: b53: provide accessors for accessing ARL_SRCH_CTL
  net: dsa: b53: split reading search entry into their own functions
  net: dsa: b53: move ARL entry functions into ops struct
  net: dsa: b53: add support for 5389/5397/5398 ARL entry format
  net: dsa: b53: add support for bcm63xx ARL entry format

 drivers/net/dsa/b53/b53_common.c | 316 +++++++++++++++++++++----------
 drivers/net/dsa/b53/b53_priv.h   |  71 +++++++
 drivers/net/dsa/b53/b53_regs.h   |  22 +++
 3 files changed, 312 insertions(+), 97 deletions(-)


base-commit: 6fc33710cd6c55397e606eeb544bdf56ee87aae5
-- 
2.43.0

[PATCH net-next 1/8] net: dsa: b53: b53_arl_read{,25}(): use the entry for comparision

[Jonas Gorski]

Align the b53_arl_read{,25}() functions by consistently using the
parsed arl entry instead of parsing the raw registers again.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 22 ++++++++++------------
 1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index c911d7ea601f..1b94cf7b06e8 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1850,7 +1850,7 @@ static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
 	return b53_arl_op_wait(dev);
 }
 
-static int b53_arl_read(struct b53_device *dev, u64 mac,
+static int b53_arl_read(struct b53_device *dev, const u8 *mac,
 			u16 vid, struct b53_arl_entry *ent, u8 *idx)
 {
 	DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
@@ -1874,14 +1874,13 @@ static int b53_arl_read(struct b53_device *dev, u64 mac,
 			   B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
 		b53_arl_to_entry(ent, mac_vid, fwd_entry);
 
-		if (!(fwd_entry & ARLTBL_VALID)) {
+		if (!ent->is_valid) {
 			set_bit(i, free_bins);
 			continue;
 		}
-		if ((mac_vid & ARLTBL_MAC_MASK) != mac)
+		if (!ether_addr_equal(ent->mac, mac))
 			continue;
-		if (dev->vlan_enabled &&
-		    ((mac_vid >> ARLTBL_VID_S) & ARLTBL_VID_MASK) != vid)
+		if (dev->vlan_enabled && ent->vid != vid)
 			continue;
 		*idx = i;
 		return 0;
@@ -1891,7 +1890,7 @@ static int b53_arl_read(struct b53_device *dev, u64 mac,
 	return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
 }
 
-static int b53_arl_read_25(struct b53_device *dev, u64 mac,
+static int b53_arl_read_25(struct b53_device *dev, const u8 *mac,
 			   u16 vid, struct b53_arl_entry *ent, u8 *idx)
 {
 	DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
@@ -1913,14 +1912,13 @@ static int b53_arl_read_25(struct b53_device *dev, u64 mac,
 
 		b53_arl_to_entry_25(ent, mac_vid);
 
-		if (!(mac_vid & ARLTBL_VALID_25)) {
+		if (!ent->is_valid) {
 			set_bit(i, free_bins);
 			continue;
 		}
-		if ((mac_vid & ARLTBL_MAC_MASK) != mac)
+		if (!ether_addr_equal(ent->mac, mac))
 			continue;
-		if (dev->vlan_enabled &&
-		    ((mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25) != vid)
+		if (dev->vlan_enabled && ent->vid != vid)
 			continue;
 		*idx = i;
 		return 0;
@@ -1953,9 +1951,9 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		return ret;
 
 	if (is5325(dev) || is5365(dev))
-		ret = b53_arl_read_25(dev, mac, vid, &ent, &idx);
+		ret = b53_arl_read_25(dev, addr, vid, &ent, &idx);
 	else
-		ret = b53_arl_read(dev, mac, vid, &ent, &idx);
+		ret = b53_arl_read(dev, addr, vid, &ent, &idx);
 
 	/* If this is a read, just finish now */
 	if (op)
-- 
2.43.0

Re: [PATCH net-next 1/8] net: dsa: b53: b53_arl_read{,25}(): use the entry for comparision

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Align the b53_arl_read{,25}() functions by consistently using the
> parsed arl entry instead of parsing the raw registers again.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 2/8] net: dsa: b53: move reading ARL entries into their own function

[Jonas Gorski]

Instead of duplicating the whole code iterating over all bins for
BCM5325, factor out reading and parsing the entry into its own
functions, and name it the modern one after the first chip with that ARL
format, (BCM53)95.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 69 +++++++++++---------------------
 1 file changed, 23 insertions(+), 46 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 1b94cf7b06e8..d99e15a7a6bb 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1850,48 +1850,30 @@ static int b53_arl_rw_op(struct b53_device *dev, unsigned int op)
 	return b53_arl_op_wait(dev);
 }
 
-static int b53_arl_read(struct b53_device *dev, const u8 *mac,
-			u16 vid, struct b53_arl_entry *ent, u8 *idx)
+static void b53_arl_read_entry_25(struct b53_device *dev,
+				  struct b53_arl_entry *ent, u8 idx)
 {
-	DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
-	unsigned int i;
-	int ret;
-
-	ret = b53_arl_op_wait(dev);
-	if (ret)
-		return ret;
-
-	bitmap_zero(free_bins, dev->num_arl_bins);
-
-	/* Read the bins */
-	for (i = 0; i < dev->num_arl_bins; i++) {
-		u64 mac_vid;
-		u32 fwd_entry;
+	u64 mac_vid;
 
-		b53_read64(dev, B53_ARLIO_PAGE,
-			   B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
-		b53_read32(dev, B53_ARLIO_PAGE,
-			   B53_ARLTBL_DATA_ENTRY(i), &fwd_entry);
-		b53_arl_to_entry(ent, mac_vid, fwd_entry);
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		   &mac_vid);
+	b53_arl_to_entry_25(ent, mac_vid);
+}
 
-		if (!ent->is_valid) {
-			set_bit(i, free_bins);
-			continue;
-		}
-		if (!ether_addr_equal(ent->mac, mac))
-			continue;
-		if (dev->vlan_enabled && ent->vid != vid)
-			continue;
-		*idx = i;
-		return 0;
-	}
+static void b53_arl_read_entry_95(struct b53_device *dev,
+				  struct b53_arl_entry *ent, u8 idx)
+{
+	u32 fwd_entry;
+	u64 mac_vid;
 
-	*idx = find_first_bit(free_bins, dev->num_arl_bins);
-	return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		   &mac_vid);
+	b53_read32(dev, B53_ARLIO_PAGE, B53_ARLTBL_DATA_ENTRY(idx), &fwd_entry);
+	b53_arl_to_entry(ent, mac_vid, fwd_entry);
 }
 
-static int b53_arl_read_25(struct b53_device *dev, const u8 *mac,
-			   u16 vid, struct b53_arl_entry *ent, u8 *idx)
+static int b53_arl_read(struct b53_device *dev, const u8 *mac,
+			u16 vid, struct b53_arl_entry *ent, u8 *idx)
 {
 	DECLARE_BITMAP(free_bins, B53_ARLTBL_MAX_BIN_ENTRIES);
 	unsigned int i;
@@ -1905,12 +1887,10 @@ static int b53_arl_read_25(struct b53_device *dev, const u8 *mac,
 
 	/* Read the bins */
 	for (i = 0; i < dev->num_arl_bins; i++) {
-		u64 mac_vid;
-
-		b53_read64(dev, B53_ARLIO_PAGE,
-			   B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
-
-		b53_arl_to_entry_25(ent, mac_vid);
+		if (is5325(dev) || is5365(dev))
+			b53_arl_read_entry_25(dev, ent, i);
+		else
+			b53_arl_read_entry_95(dev, ent, i);
 
 		if (!ent->is_valid) {
 			set_bit(i, free_bins);
@@ -1950,10 +1930,7 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 	if (ret)
 		return ret;
 
-	if (is5325(dev) || is5365(dev))
-		ret = b53_arl_read_25(dev, addr, vid, &ent, &idx);
-	else
-		ret = b53_arl_read(dev, addr, vid, &ent, &idx);
+	ret = b53_arl_read(dev, addr, vid, &ent, &idx);
 
 	/* If this is a read, just finish now */
 	if (op)
-- 
2.43.0

Re: [PATCH net-next 2/8] net: dsa: b53: move reading ARL entries into their own function

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Instead of duplicating the whole code iterating over all bins for
> BCM5325, factor out reading and parsing the entry into its own
> functions, and name it the modern one after the first chip with that ARL
> format, (BCM53)95.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 3/8] net: dsa: b53: move writing ARL entries into their own functions

[Jonas Gorski]

Move writing ARL entries into individual functions for each format.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 38 ++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index d99e15a7a6bb..9eb7ca878e30 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1860,6 +1860,16 @@ static void b53_arl_read_entry_25(struct b53_device *dev,
 	b53_arl_to_entry_25(ent, mac_vid);
 }
 
+static void b53_arl_write_entry_25(struct b53_device *dev,
+				   const struct b53_arl_entry *ent, u8 idx)
+{
+	u64 mac_vid;
+
+	b53_arl_from_entry_25(&mac_vid, ent);
+	b53_write64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		    mac_vid);
+}
+
 static void b53_arl_read_entry_95(struct b53_device *dev,
 				  struct b53_arl_entry *ent, u8 idx)
 {
@@ -1872,6 +1882,19 @@ static void b53_arl_read_entry_95(struct b53_device *dev,
 	b53_arl_to_entry(ent, mac_vid, fwd_entry);
 }
 
+static void b53_arl_write_entry_95(struct b53_device *dev,
+				   const struct b53_arl_entry *ent, u8 idx)
+{
+	u32 fwd_entry;
+	u64 mac_vid;
+
+	b53_arl_from_entry(&mac_vid, &fwd_entry, ent);
+	b53_write64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		    mac_vid);
+	b53_write32(dev, B53_ARLIO_PAGE, B53_ARLTBL_DATA_ENTRY(idx),
+		    fwd_entry);
+}
+
 static int b53_arl_read(struct b53_device *dev, const u8 *mac,
 			u16 vid, struct b53_arl_entry *ent, u8 *idx)
 {
@@ -1912,9 +1935,8 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		      const unsigned char *addr, u16 vid, bool is_valid)
 {
 	struct b53_arl_entry ent;
-	u32 fwd_entry;
-	u64 mac, mac_vid = 0;
 	u8 idx = 0;
+	u64 mac;
 	int ret;
 
 	/* Convert the array into a 64-bit MAC */
@@ -1947,7 +1969,6 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		/* We could not find a matching MAC, so reset to a new entry */
 		dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
 			addr, vid, idx);
-		fwd_entry = 0;
 		break;
 	default:
 		dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
@@ -1975,16 +1996,9 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 	ent.is_age = false;
 	memcpy(ent.mac, addr, ETH_ALEN);
 	if (is5325(dev) || is5365(dev))
-		b53_arl_from_entry_25(&mac_vid, &ent);
+		b53_arl_write_entry_25(dev, &ent, idx);
 	else
-		b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
-
-	b53_write64(dev, B53_ARLIO_PAGE,
-		    B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
-
-	if (!is5325(dev) && !is5365(dev))
-		b53_write32(dev, B53_ARLIO_PAGE,
-			    B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
+		b53_arl_write_entry_95(dev, &ent, idx);
 
 	return b53_arl_rw_op(dev, 0);
 }
-- 
2.43.0

Re: [PATCH net-next 3/8] net: dsa: b53: move writing ARL entries into their own functions

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Move writing ARL entries into individual functions for each format.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 4/8] net: dsa: b53: provide accessors for accessing ARL_SRCH_CTL

[Jonas Gorski]

In order to more easily support more formats, move accessing
ARL_SRCH_CTL into helper functions to contain the differences.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 37 +++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 9eb7ca878e30..b13437ea21a0 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2033,18 +2033,37 @@ int b53_fdb_del(struct dsa_switch *ds, int port,
 }
 EXPORT_SYMBOL(b53_fdb_del);
 
-static int b53_arl_search_wait(struct b53_device *dev)
+static void b53_read_arl_srch_ctl(struct b53_device *dev, u8 *val)
 {
-	unsigned int timeout = 1000;
-	u8 reg, offset;
+	u8 offset;
+
+	if (is5325(dev) || is5365(dev))
+		offset = B53_ARL_SRCH_CTL_25;
+	else
+		offset = B53_ARL_SRCH_CTL;
+
+	b53_read8(dev, B53_ARLIO_PAGE, offset, val);
+}
+
+static void b53_write_arl_srch_ctl(struct b53_device *dev, u8 val)
+{
+	u8 offset;
 
 	if (is5325(dev) || is5365(dev))
 		offset = B53_ARL_SRCH_CTL_25;
 	else
 		offset = B53_ARL_SRCH_CTL;
 
+	b53_write8(dev, B53_ARLIO_PAGE, offset, val);
+}
+
+static int b53_arl_search_wait(struct b53_device *dev)
+{
+	unsigned int timeout = 1000;
+	u8 reg;
+
 	do {
-		b53_read8(dev, B53_ARLIO_PAGE, offset, &reg);
+		b53_read_arl_srch_ctl(dev, &reg);
 		if (!(reg & ARL_SRCH_STDN))
 			return -ENOENT;
 
@@ -2099,23 +2118,15 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 	unsigned int count = 0, results_per_hit = 1;
 	struct b53_device *priv = ds->priv;
 	struct b53_arl_entry results[2];
-	u8 offset;
 	int ret;
-	u8 reg;
 
 	if (priv->num_arl_bins > 2)
 		results_per_hit = 2;
 
 	mutex_lock(&priv->arl_mutex);
 
-	if (is5325(priv) || is5365(priv))
-		offset = B53_ARL_SRCH_CTL_25;
-	else
-		offset = B53_ARL_SRCH_CTL;
-
 	/* Start search operation */
-	reg = ARL_SRCH_STDN;
-	b53_write8(priv, B53_ARLIO_PAGE, offset, reg);
+	b53_write_arl_srch_ctl(priv, ARL_SRCH_STDN);
 
 	do {
 		ret = b53_arl_search_wait(priv);
-- 
2.43.0

Re: [PATCH net-next 4/8] net: dsa: b53: provide accessors for accessing ARL_SRCH_CTL

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> In order to more easily support more formats, move accessing
> ARL_SRCH_CTL into helper functions to contain the differences.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 5/8] net: dsa: b53: split reading search entry into their own functions

[Jonas Gorski]

Split reading search entries into a function for each format.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 56 ++++++++++++++++++++++----------
 1 file changed, 38 insertions(+), 18 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index b13437ea21a0..fa4cf6ceddb8 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2076,28 +2076,48 @@ static int b53_arl_search_wait(struct b53_device *dev)
 	return -ETIMEDOUT;
 }
 
-static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
-			      struct b53_arl_entry *ent)
+static void b53_arl_search_read_25(struct b53_device *dev, u8 idx,
+				   struct b53_arl_entry *ent)
 {
 	u64 mac_vid;
 
-	if (is5325(dev)) {
-		b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_25,
-			   &mac_vid);
-		b53_arl_to_entry_25(ent, mac_vid);
-	} else if (is5365(dev)) {
-		b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_65,
-			   &mac_vid);
-		b53_arl_to_entry_25(ent, mac_vid);
-	} else {
-		u32 fwd_entry;
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_25,
+		   &mac_vid);
+	b53_arl_to_entry_25(ent, mac_vid);
+}
 
-		b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_MACVID(idx),
-			   &mac_vid);
-		b53_read32(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL(idx),
-			   &fwd_entry);
-		b53_arl_to_entry(ent, mac_vid, fwd_entry);
-	}
+static void b53_arl_search_read_65(struct b53_device *dev, u8 idx,
+				   struct b53_arl_entry *ent)
+{
+	u64 mac_vid;
+
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_0_MACVID_65,
+		   &mac_vid);
+	b53_arl_to_entry_25(ent, mac_vid);
+}
+
+static void b53_arl_search_read_95(struct b53_device *dev, u8 idx,
+				   struct b53_arl_entry *ent)
+{
+	u32 fwd_entry;
+	u64 mac_vid;
+
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL_MACVID(idx),
+		   &mac_vid);
+	b53_read32(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSTL(idx),
+		   &fwd_entry);
+	b53_arl_to_entry(ent, mac_vid, fwd_entry);
+}
+
+static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
+			      struct b53_arl_entry *ent)
+{
+	if (is5325(dev))
+		b53_arl_search_read_25(dev, idx, ent);
+	else if (is5365(dev))
+		b53_arl_search_read_65(dev, idx, ent);
+	else
+		b53_arl_search_read_95(dev, idx, ent);
 }
 
 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
-- 
2.43.0

Re: [PATCH net-next 5/8] net: dsa: b53: split reading search entry into their own functions

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Split reading search entries into a function for each format.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 6/8] net: dsa: b53: move ARL entry functions into ops struct

[Jonas Gorski]

Now that the differences in ARL entry formats are neatly contained into
functions per chip family, wrap them into an ops struct and add wrapper
functions to access them.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 67 ++++++++++++++++++++++----------
 drivers/net/dsa/b53/b53_priv.h   | 30 ++++++++++++++
 2 files changed, 76 insertions(+), 21 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index fa4cf6ceddb8..c69022cc85bf 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1910,10 +1910,7 @@ static int b53_arl_read(struct b53_device *dev, const u8 *mac,
 
 	/* Read the bins */
 	for (i = 0; i < dev->num_arl_bins; i++) {
-		if (is5325(dev) || is5365(dev))
-			b53_arl_read_entry_25(dev, ent, i);
-		else
-			b53_arl_read_entry_95(dev, ent, i);
+		b53_arl_read_entry(dev, ent, i);
 
 		if (!ent->is_valid) {
 			set_bit(i, free_bins);
@@ -1995,10 +1992,7 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 	ent.is_static = true;
 	ent.is_age = false;
 	memcpy(ent.mac, addr, ETH_ALEN);
-	if (is5325(dev) || is5365(dev))
-		b53_arl_write_entry_25(dev, &ent, idx);
-	else
-		b53_arl_write_entry_95(dev, &ent, idx);
+	b53_arl_write_entry(dev, &ent, idx);
 
 	return b53_arl_rw_op(dev, 0);
 }
@@ -2109,17 +2103,6 @@ static void b53_arl_search_read_95(struct b53_device *dev, u8 idx,
 	b53_arl_to_entry(ent, mac_vid, fwd_entry);
 }
 
-static void b53_arl_search_rd(struct b53_device *dev, u8 idx,
-			      struct b53_arl_entry *ent)
-{
-	if (is5325(dev))
-		b53_arl_search_read_25(dev, idx, ent);
-	else if (is5365(dev))
-		b53_arl_search_read_65(dev, idx, ent);
-	else
-		b53_arl_search_read_95(dev, idx, ent);
-}
-
 static int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
 			dsa_fdb_dump_cb_t *cb, void *data)
 {
@@ -2153,13 +2136,13 @@ int b53_fdb_dump(struct dsa_switch *ds, int port,
 		if (ret)
 			break;
 
-		b53_arl_search_rd(priv, 0, &results[0]);
+		b53_arl_search_read(priv, 0, &results[0]);
 		ret = b53_fdb_copy(port, &results[0], cb, data);
 		if (ret)
 			break;
 
 		if (results_per_hit == 2) {
-			b53_arl_search_rd(priv, 1, &results[1]);
+			b53_arl_search_read(priv, 1, &results[1]);
 			ret = b53_fdb_copy(port, &results[1], cb, data);
 			if (ret)
 				break;
@@ -2688,6 +2671,24 @@ static const struct dsa_switch_ops b53_switch_ops = {
 	.port_change_mtu	= b53_change_mtu,
 };
 
+static const struct b53_arl_ops b53_arl_ops_25 = {
+	.arl_read_entry = b53_arl_read_entry_25,
+	.arl_write_entry = b53_arl_write_entry_25,
+	.arl_search_read = b53_arl_search_read_25,
+};
+
+static const struct b53_arl_ops b53_arl_ops_65 = {
+	.arl_read_entry = b53_arl_read_entry_25,
+	.arl_write_entry = b53_arl_write_entry_25,
+	.arl_search_read = b53_arl_search_read_65,
+};
+
+static const struct b53_arl_ops b53_arl_ops_95 = {
+	.arl_read_entry = b53_arl_read_entry_95,
+	.arl_write_entry = b53_arl_write_entry_95,
+	.arl_search_read = b53_arl_search_read_95,
+};
+
 struct b53_chip_data {
 	u32 chip_id;
 	const char *dev_name;
@@ -2701,6 +2702,7 @@ struct b53_chip_data {
 	u8 duplex_reg;
 	u8 jumbo_pm_reg;
 	u8 jumbo_size_reg;
+	const struct b53_arl_ops *arl_ops;
 };
 
 #define B53_VTA_REGS	\
@@ -2720,6 +2722,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_buckets = 1024,
 		.imp_port = 5,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
+		.arl_ops = &b53_arl_ops_25,
 	},
 	{
 		.chip_id = BCM5365_DEVICE_ID,
@@ -2730,6 +2733,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.arl_buckets = 1024,
 		.imp_port = 5,
 		.duplex_reg = B53_DUPLEX_STAT_FE,
+		.arl_ops = &b53_arl_ops_65,
 	},
 	{
 		.chip_id = BCM5389_DEVICE_ID,
@@ -2743,6 +2747,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM5395_DEVICE_ID,
@@ -2756,6 +2761,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM5397_DEVICE_ID,
@@ -2769,6 +2775,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM5398_DEVICE_ID,
@@ -2782,6 +2789,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53101_DEVICE_ID,
@@ -2795,6 +2803,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53115_DEVICE_ID,
@@ -2808,6 +2817,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53125_DEVICE_ID,
@@ -2821,6 +2831,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53128_DEVICE_ID,
@@ -2834,6 +2845,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM63XX_DEVICE_ID,
@@ -2847,6 +2859,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_63XX,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53010_DEVICE_ID,
@@ -2860,6 +2873,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53011_DEVICE_ID,
@@ -2873,6 +2887,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53012_DEVICE_ID,
@@ -2886,6 +2901,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53018_DEVICE_ID,
@@ -2899,6 +2915,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53019_DEVICE_ID,
@@ -2912,6 +2929,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM58XX_DEVICE_ID,
@@ -2925,6 +2943,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM583XX_DEVICE_ID,
@@ -2938,6 +2957,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	/* Starfighter 2 */
 	{
@@ -2952,6 +2972,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM7445_DEVICE_ID,
@@ -2965,6 +2986,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM7278_DEVICE_ID,
@@ -2978,6 +3000,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 	{
 		.chip_id = BCM53134_DEVICE_ID,
@@ -2992,6 +3015,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+		.arl_ops = &b53_arl_ops_95,
 	},
 };
 
@@ -3020,6 +3044,7 @@ static int b53_switch_init(struct b53_device *dev)
 			dev->num_vlans = chip->vlans;
 			dev->num_arl_bins = chip->arl_bins;
 			dev->num_arl_buckets = chip->arl_buckets;
+			dev->arl_ops = chip->arl_ops;
 			break;
 		}
 	}
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 458775f95164..ef2413509b5d 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -58,6 +58,17 @@ struct b53_io_ops {
 				bool link_up);
 };
 
+struct b53_arl_entry;
+
+struct b53_arl_ops {
+	void (*arl_read_entry)(struct b53_device *dev,
+			       struct b53_arl_entry *ent, u8 idx);
+	void (*arl_write_entry)(struct b53_device *dev,
+				const struct b53_arl_entry *ent, u8 idx);
+	void (*arl_search_read)(struct b53_device *dev, u8 idx,
+				struct b53_arl_entry *ent);
+};
+
 #define B53_INVALID_LANE	0xff
 
 enum {
@@ -127,6 +138,7 @@ struct b53_device {
 	struct mutex stats_mutex;
 	struct mutex arl_mutex;
 	const struct b53_io_ops *ops;
+	const struct b53_arl_ops *arl_ops;
 
 	/* chip specific data */
 	u32 chip_id;
@@ -371,6 +383,24 @@ static inline void b53_arl_from_entry_25(u64 *mac_vid,
 		*mac_vid |= ARLTBL_AGE_25;
 }
 
+static inline void b53_arl_read_entry(struct b53_device *dev,
+				      struct b53_arl_entry *ent, u8 idx)
+{
+	dev->arl_ops->arl_read_entry(dev, ent, idx);
+}
+
+static inline void b53_arl_write_entry(struct b53_device *dev,
+				       const struct b53_arl_entry *ent, u8 idx)
+{
+	dev->arl_ops->arl_write_entry(dev, ent, idx);
+}
+
+static inline void b53_arl_search_read(struct b53_device *dev, u8 idx,
+				       struct b53_arl_entry *ent)
+{
+	dev->arl_ops->arl_search_read(dev, idx, ent);
+}
+
 #ifdef CONFIG_BCM47XX
 
 #include <linux/bcm47xx_nvram.h>
-- 
2.43.0

Re: [PATCH net-next 6/8] net: dsa: b53: move ARL entry functions into ops struct

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Now that the differences in ARL entry formats are neatly contained into
> functions per chip family, wrap them into an ops struct and add wrapper
> functions to access them.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 7/8] net: dsa: b53: add support for 5389/5397/5398 ARL entry format

[Jonas Gorski]

BCM5389, BCM5397 and BCM5398 use a different ARL entry format with just
a 16 bit fwdentry register, as well as different search control and data
offsets.

So add appropriate ops for them and switch those chips to use them.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 53 ++++++++++++++++++++++++++++++--
 drivers/net/dsa/b53/b53_priv.h   | 26 ++++++++++++++++
 drivers/net/dsa/b53/b53_regs.h   | 13 ++++++++
 3 files changed, 89 insertions(+), 3 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index c69022cc85bf..73ea9adb95b7 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1870,6 +1870,31 @@ static void b53_arl_write_entry_25(struct b53_device *dev,
 		    mac_vid);
 }
 
+static void b53_arl_read_entry_89(struct b53_device *dev,
+				  struct b53_arl_entry *ent, u8 idx)
+{
+	u64 mac_vid;
+	u16 fwd_entry;
+
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		   &mac_vid);
+	b53_read16(dev, B53_ARLIO_PAGE, B53_ARLTBL_DATA_ENTRY(idx), &fwd_entry);
+	b53_arl_to_entry_89(ent, mac_vid, fwd_entry);
+}
+
+static void b53_arl_write_entry_89(struct b53_device *dev,
+				   const struct b53_arl_entry *ent, u8 idx)
+{
+	u32 fwd_entry;
+	u64 mac_vid;
+
+	b53_arl_from_entry_89(&mac_vid, &fwd_entry, ent);
+	b53_write64(dev, B53_ARLIO_PAGE,
+		    B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
+	b53_write16(dev, B53_ARLIO_PAGE,
+		    B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
+}
+
 static void b53_arl_read_entry_95(struct b53_device *dev,
 				  struct b53_arl_entry *ent, u8 idx)
 {
@@ -2033,6 +2058,8 @@ static void b53_read_arl_srch_ctl(struct b53_device *dev, u8 *val)
 
 	if (is5325(dev) || is5365(dev))
 		offset = B53_ARL_SRCH_CTL_25;
+	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev))
+		offset = B53_ARL_SRCH_CTL_89;
 	else
 		offset = B53_ARL_SRCH_CTL;
 
@@ -2045,6 +2072,8 @@ static void b53_write_arl_srch_ctl(struct b53_device *dev, u8 val)
 
 	if (is5325(dev) || is5365(dev))
 		offset = B53_ARL_SRCH_CTL_25;
+	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev))
+		offset = B53_ARL_SRCH_CTL_89;
 	else
 		offset = B53_ARL_SRCH_CTL;
 
@@ -2090,6 +2119,18 @@ static void b53_arl_search_read_65(struct b53_device *dev, u8 idx,
 	b53_arl_to_entry_25(ent, mac_vid);
 }
 
+static void b53_arl_search_read_89(struct b53_device *dev, u8 idx,
+				   struct b53_arl_entry *ent)
+{
+	u16 fwd_entry;
+	u64 mac_vid;
+
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSLT_MACVID_89,
+		   &mac_vid);
+	b53_read16(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSLT_89, &fwd_entry);
+	b53_arl_to_entry_89(ent, mac_vid, fwd_entry);
+}
+
 static void b53_arl_search_read_95(struct b53_device *dev, u8 idx,
 				   struct b53_arl_entry *ent)
 {
@@ -2683,6 +2724,12 @@ static const struct b53_arl_ops b53_arl_ops_65 = {
 	.arl_search_read = b53_arl_search_read_65,
 };
 
+static const struct b53_arl_ops b53_arl_ops_89 = {
+	.arl_read_entry = b53_arl_read_entry_89,
+	.arl_write_entry = b53_arl_write_entry_89,
+	.arl_search_read = b53_arl_search_read_89,
+};
+
 static const struct b53_arl_ops b53_arl_ops_95 = {
 	.arl_read_entry = b53_arl_read_entry_95,
 	.arl_write_entry = b53_arl_write_entry_95,
@@ -2747,7 +2794,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
-		.arl_ops = &b53_arl_ops_95,
+		.arl_ops = &b53_arl_ops_89,
 	},
 	{
 		.chip_id = BCM5395_DEVICE_ID,
@@ -2775,7 +2822,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
-		.arl_ops = &b53_arl_ops_95,
+		.arl_ops = &b53_arl_ops_89,
 	},
 	{
 		.chip_id = BCM5398_DEVICE_ID,
@@ -2789,7 +2836,7 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.duplex_reg = B53_DUPLEX_STAT_GE,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
-		.arl_ops = &b53_arl_ops_95,
+		.arl_ops = &b53_arl_ops_89,
 	},
 	{
 		.chip_id = BCM53101_DEVICE_ID,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index ef2413509b5d..d6d25bb3945b 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -353,6 +353,18 @@ static inline void b53_arl_to_entry_25(struct b53_arl_entry *ent,
 	ent->vid = mac_vid >> ARLTBL_VID_S_65;
 }
 
+static inline void b53_arl_to_entry_89(struct b53_arl_entry *ent,
+				       u64 mac_vid, u16 fwd_entry)
+{
+	memset(ent, 0, sizeof(*ent));
+	ent->port = fwd_entry & ARLTBL_DATA_PORT_ID_MASK_89;
+	ent->is_valid = !!(fwd_entry & ARLTBL_VALID_89);
+	ent->is_age = !!(fwd_entry & ARLTBL_AGE_89);
+	ent->is_static = !!(fwd_entry & ARLTBL_STATIC_89);
+	u64_to_ether_addr(mac_vid, ent->mac);
+	ent->vid = mac_vid >> ARLTBL_VID_S;
+}
+
 static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
 				      const struct b53_arl_entry *ent)
 {
@@ -383,6 +395,20 @@ static inline void b53_arl_from_entry_25(u64 *mac_vid,
 		*mac_vid |= ARLTBL_AGE_25;
 }
 
+static inline void b53_arl_from_entry_89(u64 *mac_vid, u32 *fwd_entry,
+					 const struct b53_arl_entry *ent)
+{
+	*mac_vid = ether_addr_to_u64(ent->mac);
+	*mac_vid |= (u64)(ent->vid & ARLTBL_VID_MASK) << ARLTBL_VID_S;
+	*fwd_entry = ent->port & ARLTBL_DATA_PORT_ID_MASK_89;
+	if (ent->is_valid)
+		*fwd_entry |= ARLTBL_VALID_89;
+	if (ent->is_static)
+		*fwd_entry |= ARLTBL_STATIC_89;
+	if (ent->is_age)
+		*fwd_entry |= ARLTBL_AGE_89;
+}
+
 static inline void b53_arl_read_entry(struct b53_device *dev,
 				      struct b53_arl_entry *ent, u8 idx)
 {
diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index c36a3dfb2ee8..c303507d3034 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -346,12 +346,20 @@
 #define   ARLTBL_STATIC			BIT(15)
 #define   ARLTBL_VALID			BIT(16)
 
+/* BCM5389 ARL Table Data Entry N Register format (16 bit) */
+#define   ARLTBL_DATA_PORT_ID_MASK_89	GENMASK(8, 0)
+#define   ARLTBL_TC_MASK_89		GENMASK(12, 10)
+#define   ARLTBL_AGE_89			BIT(13)
+#define   ARLTBL_STATIC_89		BIT(14)
+#define   ARLTBL_VALID_89		BIT(15)
+
 /* Maximum number of bin entries in the ARL for all switches */
 #define B53_ARLTBL_MAX_BIN_ENTRIES	4
 
 /* ARL Search Control Register (8 bit) */
 #define B53_ARL_SRCH_CTL		0x50
 #define B53_ARL_SRCH_CTL_25		0x20
+#define B53_ARL_SRCH_CTL_89		0x30
 #define   ARL_SRCH_VLID			BIT(0)
 #define   ARL_SRCH_STDN			BIT(7)
 
@@ -359,10 +367,12 @@
 #define B53_ARL_SRCH_ADDR		0x51
 #define B53_ARL_SRCH_ADDR_25		0x22
 #define B53_ARL_SRCH_ADDR_65		0x24
+#define B53_ARL_SRCH_ADDR_89		0x31
 #define  ARL_ADDR_MASK			GENMASK(14, 0)
 
 /* ARL Search MAC/VID Result (64 bit) */
 #define B53_ARL_SRCH_RSTL_0_MACVID	0x60
+#define B53_ARL_SRCH_RSLT_MACVID_89	0x33
 
 /* Single register search result on 5325 */
 #define B53_ARL_SRCH_RSTL_0_MACVID_25	0x24
@@ -372,6 +382,9 @@
 /* ARL Search Data Result (32 bit) */
 #define B53_ARL_SRCH_RSTL_0		0x68
 
+/* BCM5389 ARL Search Data Result (16 bit) */
+#define B53_ARL_SRCH_RSLT_89		0x3b
+
 #define B53_ARL_SRCH_RSTL_MACVID(x)	(B53_ARL_SRCH_RSTL_0_MACVID + ((x) * 0x10))
 #define B53_ARL_SRCH_RSTL(x)		(B53_ARL_SRCH_RSTL_0 + ((x) * 0x10))
 
-- 
2.43.0

Re: [PATCH net-next 7/8] net: dsa: b53: add support for 5389/5397/5398 ARL entry format

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> BCM5389, BCM5397 and BCM5398 use a different ARL entry format with just
> a 16 bit fwdentry register, as well as different search control and data
> offsets.
> 
> So add appropriate ops for them and switch those chips to use them.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

[PATCH net-next 8/8] net: dsa: b53: add support for bcm63xx ARL entry format

[Jonas Gorski]

The ARL registers of BCM63XX embedded switches are somewhat unique. The
normal ARL table access registers have the same format as BCM5389, but
the ARL search registers differ:

* SRCH_CTL is at the same offset of BCM5389, but 16 bits wide. It does
  not have more fields, just needs to be accessed by a 16 bit read.
* SRCH_RSLT_MACVID and SRCH_RSLT are aligned to 32 bit, and have shifted
  offsets.
* SRCH_RSLT has a different format than the normal ARL data entry
  register.
* There is only one set of ENTRY_N registers, implying a 1 bin layout.

So add appropriate ops for bcm63xx and let it use it.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 44 +++++++++++++++++++++++++++-----
 drivers/net/dsa/b53/b53_priv.h   | 15 +++++++++++
 drivers/net/dsa/b53/b53_regs.h   |  9 +++++++
 3 files changed, 61 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 73ea9adb95b7..72c85cd34a4e 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2058,12 +2058,20 @@ static void b53_read_arl_srch_ctl(struct b53_device *dev, u8 *val)
 
 	if (is5325(dev) || is5365(dev))
 		offset = B53_ARL_SRCH_CTL_25;
-	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev))
+	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev) ||
+		 is63xx(dev))
 		offset = B53_ARL_SRCH_CTL_89;
 	else
 		offset = B53_ARL_SRCH_CTL;
 
-	b53_read8(dev, B53_ARLIO_PAGE, offset, val);
+	if (is63xx(dev)) {
+		u16 val16;
+
+		b53_read16(dev, B53_ARLIO_PAGE, offset, &val16);
+		*val = val16 & 0xff;
+	} else {
+		b53_read8(dev, B53_ARLIO_PAGE, offset, val);
+	}
 }
 
 static void b53_write_arl_srch_ctl(struct b53_device *dev, u8 val)
@@ -2072,12 +2080,16 @@ static void b53_write_arl_srch_ctl(struct b53_device *dev, u8 val)
 
 	if (is5325(dev) || is5365(dev))
 		offset = B53_ARL_SRCH_CTL_25;
-	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev))
+	else if (dev->chip_id == BCM5389_DEVICE_ID || is5397_98(dev) ||
+		 is63xx(dev))
 		offset = B53_ARL_SRCH_CTL_89;
 	else
 		offset = B53_ARL_SRCH_CTL;
 
-	b53_write8(dev, B53_ARLIO_PAGE, offset, val);
+	if (is63xx(dev))
+		b53_write16(dev, B53_ARLIO_PAGE, offset, val);
+	else
+		b53_write8(dev, B53_ARLIO_PAGE, offset, val);
 }
 
 static int b53_arl_search_wait(struct b53_device *dev)
@@ -2131,6 +2143,18 @@ static void b53_arl_search_read_89(struct b53_device *dev, u8 idx,
 	b53_arl_to_entry_89(ent, mac_vid, fwd_entry);
 }
 
+static void b53_arl_search_read_63xx(struct b53_device *dev, u8 idx,
+				     struct b53_arl_entry *ent)
+{
+	u16 fwd_entry;
+	u64 mac_vid;
+
+	b53_read64(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSLT_MACVID_63XX,
+		   &mac_vid);
+	b53_read16(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_RSLT_63XX, &fwd_entry);
+	b53_arl_search_to_entry_63xx(ent, mac_vid, fwd_entry);
+}
+
 static void b53_arl_search_read_95(struct b53_device *dev, u8 idx,
 				   struct b53_arl_entry *ent)
 {
@@ -2730,6 +2754,12 @@ static const struct b53_arl_ops b53_arl_ops_89 = {
 	.arl_search_read = b53_arl_search_read_89,
 };
 
+static const struct b53_arl_ops b53_arl_ops_63xx = {
+	.arl_read_entry = b53_arl_read_entry_89,
+	.arl_write_entry = b53_arl_write_entry_89,
+	.arl_search_read = b53_arl_search_read_63xx,
+};
+
 static const struct b53_arl_ops b53_arl_ops_95 = {
 	.arl_read_entry = b53_arl_read_entry_95,
 	.arl_write_entry = b53_arl_write_entry_95,
@@ -2899,14 +2929,14 @@ static const struct b53_chip_data b53_switch_chips[] = {
 		.dev_name = "BCM63xx",
 		.vlans = 4096,
 		.enabled_ports = 0, /* pdata must provide them */
-		.arl_bins = 4,
-		.arl_buckets = 1024,
+		.arl_bins = 1,
+		.arl_buckets = 4096,
 		.imp_port = 8,
 		.vta_regs = B53_VTA_REGS_63XX,
 		.duplex_reg = B53_DUPLEX_STAT_63XX,
 		.jumbo_pm_reg = B53_JUMBO_PORT_MASK_63XX,
 		.jumbo_size_reg = B53_JUMBO_MAX_SIZE_63XX,
-		.arl_ops = &b53_arl_ops_95,
+		.arl_ops = &b53_arl_ops_63xx,
 	},
 	{
 		.chip_id = BCM53010_DEVICE_ID,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index d6d25bb3945b..2bfd0e7c95c9 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -409,6 +409,21 @@ static inline void b53_arl_from_entry_89(u64 *mac_vid, u32 *fwd_entry,
 		*fwd_entry |= ARLTBL_AGE_89;
 }
 
+static inline void b53_arl_search_to_entry_63xx(struct b53_arl_entry *ent,
+						u64 mac_vid, u16 fwd_entry)
+{
+	memset(ent, 0, sizeof(*ent));
+	u64_to_ether_addr(mac_vid, ent->mac);
+	ent->vid = mac_vid >> ARLTBL_VID_S;
+
+	ent->port = fwd_entry & ARL_SRST_PORT_ID_MASK_63XX;
+	ent->port >>= 1;
+
+	ent->is_age = !!(fwd_entry & ARL_SRST_AGE_63XX);
+	ent->is_static = !!(fwd_entry & ARL_SRST_STATIC_63XX);
+	ent->is_valid = 1;
+}
+
 static inline void b53_arl_read_entry(struct b53_device *dev,
 				      struct b53_arl_entry *ent, u8 idx)
 {
diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index c303507d3034..69ebbec932f6 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -368,11 +368,13 @@
 #define B53_ARL_SRCH_ADDR_25		0x22
 #define B53_ARL_SRCH_ADDR_65		0x24
 #define B53_ARL_SRCH_ADDR_89		0x31
+#define B53_ARL_SRCH_ADDR_63XX		0x32
 #define  ARL_ADDR_MASK			GENMASK(14, 0)
 
 /* ARL Search MAC/VID Result (64 bit) */
 #define B53_ARL_SRCH_RSTL_0_MACVID	0x60
 #define B53_ARL_SRCH_RSLT_MACVID_89	0x33
+#define B53_ARL_SRCH_RSLT_MACVID_63XX	0x34
 
 /* Single register search result on 5325 */
 #define B53_ARL_SRCH_RSTL_0_MACVID_25	0x24
@@ -388,6 +390,13 @@
 #define B53_ARL_SRCH_RSTL_MACVID(x)	(B53_ARL_SRCH_RSTL_0_MACVID + ((x) * 0x10))
 #define B53_ARL_SRCH_RSTL(x)		(B53_ARL_SRCH_RSTL_0 + ((x) * 0x10))
 
+/* 63XX ARL Search Data Result (16 bit) */
+#define B53_ARL_SRCH_RSLT_63XX		0x3c
+#define   ARL_SRST_PORT_ID_MASK_63XX	GENMASK(9, 1)
+#define   ARL_SRST_TC_MASK_63XX		GENMASK(13, 11)
+#define   ARL_SRST_AGE_63XX		BIT(14)
+#define   ARL_SRST_STATIC_63XX		BIT(15)
+
 /*************************************************************************
  * IEEE 802.1X Registers
  *************************************************************************/
-- 
2.43.0

Re: [PATCH net-next 8/8] net: dsa: b53: add support for bcm63xx ARL entry format

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> The ARL registers of BCM63XX embedded switches are somewhat unique. The
> normal ARL table access registers have the same format as BCM5389, but
> the ARL search registers differ:
> 
> * SRCH_CTL is at the same offset of BCM5389, but 16 bits wide. It does
>    not have more fields, just needs to be accessed by a 16 bit read.
> * SRCH_RSLT_MACVID and SRCH_RSLT are aligned to 32 bit, and have shifted
>    offsets.
> * SRCH_RSLT has a different format than the normal ARL data entry
>    register.
> * There is only one set of ENTRY_N registers, implying a 1 bin layout.
> 
> So add appropriate ops for bcm63xx and let it use it.
> 
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

Re: [PATCH net-next 0/8] net: dsa: b53: add support for BCM5389/97/98 and BCM63XX ARL formats

[Florian Fainelli]

On 11/7/2025 12:07 AM, Jonas Gorski wrote:
> Currently b53 assumes that all switches apart from BCM5325/5365 use the
> same ARL formats, but there are actually multiple formats in use.
> 
> Older switches use a format apparently introduced with BCM5387/BCM5389,
> while newer chips use a format apparently introduced with BCM5395.
> 
> Note that these numbers are not linear, BCM5397/BCM5398 use the older
> format.
> 
> In addition to that the switches integrated into BCM63XX SoCs use their
> own format. While accessing these normal read/write ARL entries are the
> same format as BCM5389 one, the search format is different.
> 
> So in order to support all these different format, split all code
> accessing these entries into chip-family specific functions, and collect
> them in appropriate arl ops structs to keep the code cleaner.
> 
> Sent as net-next since the ARL accesses have never worked before, and
> the extensive refactoring might be too much to warrant a fix.

That seems entirely appropriate, thanks, I checked the 54389 and 63XX 
datasheets and your patches match, thank you!
-- 
Florian

Re: [PATCH net-next 0/8] net: dsa: b53: add support for BCM5389/97/98 and BCM63XX ARL formats

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Fri,  7 Nov 2025 09:07:41 +0100 you wrote:
> Currently b53 assumes that all switches apart from BCM5325/5365 use the
> same ARL formats, but there are actually multiple formats in use.
> 
> Older switches use a format apparently introduced with BCM5387/BCM5389,
> while newer chips use a format apparently introduced with BCM5395.
> 
> Note that these numbers are not linear, BCM5397/BCM5398 use the older
> format.
> 
> [...]

Here is the summary with links:
  - [net-next,1/8] net: dsa: b53: b53_arl_read{,25}(): use the entry for comparision
    https://git.kernel.org/netdev/net-next/c/a6e4fd38bf2f
  - [net-next,2/8] net: dsa: b53: move reading ARL entries into their own function
    https://git.kernel.org/netdev/net-next/c/4a291fe72267
  - [net-next,3/8] net: dsa: b53: move writing ARL entries into their own functions
    https://git.kernel.org/netdev/net-next/c/bf6e9d2ae1db
  - [net-next,4/8] net: dsa: b53: provide accessors for accessing ARL_SRCH_CTL
    https://git.kernel.org/netdev/net-next/c/1716be6db04a
  - [net-next,5/8] net: dsa: b53: split reading search entry into their own functions
    https://git.kernel.org/netdev/net-next/c/e0c476f325a8
  - [net-next,6/8] net: dsa: b53: move ARL entry functions into ops struct
    https://git.kernel.org/netdev/net-next/c/a7e73339ad46
  - [net-next,7/8] net: dsa: b53: add support for 5389/5397/5398 ARL entry format
    https://git.kernel.org/netdev/net-next/c/300f78e8b6b7
  - [net-next,8/8] net: dsa: b53: add support for bcm63xx ARL entry format
    https://git.kernel.org/netdev/net-next/c/2b3013ac0302

You are awesome, thank you!
-- 
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