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generic: 6.12: backport accepted BCM5325 patches

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Backport accepted BCM5325 patches from net-next.
These patches will be merged in the v6.17 kernel window.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas
2025-06-11 09:46:44 +02:00
parent d015a39dd3
commit 0bd694ea22
19 changed files with 285 additions and 154 deletions
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99
target/linux/generic/backport-6.12/612-01-v6.17-net-dsa-tag_brcm-legacy-reorganize-functions.patch Normal file
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@@ -0,0 +1,99 @@
From a4daaf063f8269a5881154c5b77c5ef6639d65d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:47 +0200
Subject: [PATCH] net: dsa: tag_brcm: legacy: reorganize functions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Move brcm_leg_tag_rcv() definition to top.
This function is going to be shared between two different tags.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-2-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
net/dsa/tag_brcm.c | 64 +++++++++++++++++++++++-----------------------
1 file changed, 32 insertions(+), 32 deletions(-)
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -213,6 +213,38 @@ MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROT
#endif
#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY)
+static struct sk_buff *brcm_leg_tag_rcv(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ int len = BRCM_LEG_TAG_LEN;
+ int source_port;
+ u8 *brcm_tag;
+
+ if (unlikely(!pskb_may_pull(skb, BRCM_LEG_TAG_LEN + VLAN_HLEN)))
+ return NULL;
+
+ brcm_tag = dsa_etype_header_pos_rx(skb);
+
+ source_port = brcm_tag[5] & BRCM_LEG_PORT_ID;
+
+ skb->dev = dsa_conduit_find_user(dev, 0, source_port);
+ if (!skb->dev)
+ return NULL;
+
+ /* VLAN tag is added by BCM63xx internal switch */
+ if (netdev_uses_dsa(skb->dev))
+ len += VLAN_HLEN;
+
+ /* Remove Broadcom tag and update checksum */
+ skb_pull_rcsum(skb, len);
+
+ dsa_default_offload_fwd_mark(skb);
+
+ dsa_strip_etype_header(skb, len);
+
+ return skb;
+}
+
static struct sk_buff *brcm_leg_tag_xmit(struct sk_buff *skb,
struct net_device *dev)
{
@@ -249,38 +281,6 @@ static struct sk_buff *brcm_leg_tag_xmit
return skb;
}
-
-static struct sk_buff *brcm_leg_tag_rcv(struct sk_buff *skb,
- struct net_device *dev)
-{
- int len = BRCM_LEG_TAG_LEN;
- int source_port;
- u8 *brcm_tag;
-
- if (unlikely(!pskb_may_pull(skb, BRCM_LEG_TAG_LEN + VLAN_HLEN)))
- return NULL;
-
- brcm_tag = dsa_etype_header_pos_rx(skb);
-
- source_port = brcm_tag[5] & BRCM_LEG_PORT_ID;
-
- skb->dev = dsa_conduit_find_user(dev, 0, source_port);
- if (!skb->dev)
- return NULL;
-
- /* VLAN tag is added by BCM63xx internal switch */
- if (netdev_uses_dsa(skb->dev))
- len += VLAN_HLEN;
-
- /* Remove Broadcom tag and update checksum */
- skb_pull_rcsum(skb, len);
-
- dsa_default_offload_fwd_mark(skb);
-
- dsa_strip_etype_header(skb, len);
-
- return skb;
-}
static const struct dsa_device_ops brcm_legacy_netdev_ops = {
.name = BRCM_LEGACY_NAME,

188
target/linux/generic/backport-6.12/612-02-v6.17-net-dsa-tag_brcm-add-support-for-legacy-FCS-tags.patch Normal file
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@@ -0,0 +1,188 @@
From ef07df397a621707903ef0d294a7df11f80cf206 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:48 +0200
Subject: [PATCH] net: dsa: tag_brcm: add support for legacy FCS tags
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Add support for legacy Broadcom FCS tags, which are similar to
DSA_TAG_PROTO_BRCM_LEGACY.
BCM5325 and BCM5365 switches require including the original FCS value and
length, as opposed to BCM63xx switches.
Adding the original FCS value and length to DSA_TAG_PROTO_BRCM_LEGACY would
impact performance of BCM63xx switches, so it's better to create a new tag.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-3-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
include/net/dsa.h | 2 ++
net/dsa/Kconfig | 16 ++++++++--
net/dsa/tag_brcm.c | 73 +++++++++++++++++++++++++++++++++++++++++++++-
3 files changed, 88 insertions(+), 3 deletions(-)
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -54,11 +54,13 @@ struct tc_action;
#define DSA_TAG_PROTO_RZN1_A5PSW_VALUE 26
#define DSA_TAG_PROTO_LAN937X_VALUE 27
#define DSA_TAG_PROTO_VSC73XX_8021Q_VALUE 28
+#define DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE 29
enum dsa_tag_protocol {
DSA_TAG_PROTO_NONE = DSA_TAG_PROTO_NONE_VALUE,
DSA_TAG_PROTO_BRCM = DSA_TAG_PROTO_BRCM_VALUE,
DSA_TAG_PROTO_BRCM_LEGACY = DSA_TAG_PROTO_BRCM_LEGACY_VALUE,
+ DSA_TAG_PROTO_BRCM_LEGACY_FCS = DSA_TAG_PROTO_BRCM_LEGACY_FCS_VALUE,
DSA_TAG_PROTO_BRCM_PREPEND = DSA_TAG_PROTO_BRCM_PREPEND_VALUE,
DSA_TAG_PROTO_DSA = DSA_TAG_PROTO_DSA_VALUE,
DSA_TAG_PROTO_EDSA = DSA_TAG_PROTO_EDSA_VALUE,
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -42,12 +42,24 @@ config NET_DSA_TAG_BRCM
Broadcom switches which place the tag after the MAC source address.
config NET_DSA_TAG_BRCM_LEGACY
- tristate "Tag driver for Broadcom legacy switches using in-frame headers"
+ tristate "Tag driver for BCM63xx legacy switches using in-frame headers"
select NET_DSA_TAG_BRCM_COMMON
help
Say Y if you want to enable support for tagging frames for the
- Broadcom legacy switches which place the tag after the MAC source
+ BCM63xx legacy switches which place the tag after the MAC source
address.
+ This tag is used in BCM63xx legacy switches which work without the
+ original FCS and length before the tag insertion.
+
+config NET_DSA_TAG_BRCM_LEGACY_FCS
+ tristate "Tag driver for BCM53xx legacy switches using in-frame headers"
+ select NET_DSA_TAG_BRCM_COMMON
+ help
+ Say Y if you want to enable support for tagging frames for the
+ BCM53xx legacy switches which place the tag after the MAC source
+ address.
+ This tag is used in BCM53xx legacy switches which expect original
+ FCS and length before the tag insertion to be present.
config NET_DSA_TAG_BRCM_PREPEND
tristate "Tag driver for Broadcom switches using prepended headers"
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -15,6 +15,7 @@
#define BRCM_NAME "brcm"
#define BRCM_LEGACY_NAME "brcm-legacy"
+#define BRCM_LEGACY_FCS_NAME "brcm-legacy-fcs"
#define BRCM_PREPEND_NAME "brcm-prepend"
/* Legacy Broadcom tag (6 bytes) */
@@ -32,6 +33,10 @@
#define BRCM_LEG_MULTICAST (1 << 5)
#define BRCM_LEG_EGRESS (2 << 5)
#define BRCM_LEG_INGRESS (3 << 5)
+#define BRCM_LEG_LEN_HI(x) (((x) >> 8) & 0x7)
+
+/* 4th byte in the tag */
+#define BRCM_LEG_LEN_LO(x) ((x) & 0xff)
/* 6th byte in the tag */
#define BRCM_LEG_PORT_ID (0xf)
@@ -212,7 +217,8 @@ DSA_TAG_DRIVER(brcm_netdev_ops);
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_BRCM, BRCM_NAME);
#endif
-#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY)
+#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY) || \
+ IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS)
static struct sk_buff *brcm_leg_tag_rcv(struct sk_buff *skb,
struct net_device *dev)
{
@@ -244,7 +250,9 @@ static struct sk_buff *brcm_leg_tag_rcv(
return skb;
}
+#endif /* CONFIG_NET_DSA_TAG_BRCM_LEGACY || CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS */
+#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY)
static struct sk_buff *brcm_leg_tag_xmit(struct sk_buff *skb,
struct net_device *dev)
{
@@ -294,6 +302,66 @@ DSA_TAG_DRIVER(brcm_legacy_netdev_ops);
MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_BRCM_LEGACY, BRCM_LEGACY_NAME);
#endif /* CONFIG_NET_DSA_TAG_BRCM_LEGACY */
+#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS)
+static struct sk_buff *brcm_leg_fcs_tag_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct dsa_port *dp = dsa_user_to_port(dev);
+ unsigned int fcs_len;
+ __le32 fcs_val;
+ u8 *brcm_tag;
+
+ /* The Ethernet switch we are interfaced with needs packets to be at
+ * least 64 bytes (including FCS) otherwise they will be discarded when
+ * they enter the switch port logic. When Broadcom tags are enabled, we
+ * need to make sure that packets are at least 70 bytes (including FCS
+ * and tag) because the length verification is done after the Broadcom
+ * tag is stripped off the ingress packet.
+ *
+ * Let dsa_user_xmit() free the SKB.
+ */
+ if (__skb_put_padto(skb, ETH_ZLEN + BRCM_LEG_TAG_LEN, false))
+ return NULL;
+
+ fcs_len = skb->len;
+ fcs_val = cpu_to_le32(crc32_le(~0, skb->data, fcs_len) ^ ~0);
+
+ skb_push(skb, BRCM_LEG_TAG_LEN);
+
+ dsa_alloc_etype_header(skb, BRCM_LEG_TAG_LEN);
+
+ brcm_tag = skb->data + 2 * ETH_ALEN;
+
+ /* Broadcom tag type */
+ brcm_tag[0] = BRCM_LEG_TYPE_HI;
+ brcm_tag[1] = BRCM_LEG_TYPE_LO;
+
+ /* Broadcom tag value */
+ brcm_tag[2] = BRCM_LEG_EGRESS | BRCM_LEG_LEN_HI(fcs_len);
+ brcm_tag[3] = BRCM_LEG_LEN_LO(fcs_len);
+ brcm_tag[4] = 0;
+ brcm_tag[5] = dp->index & BRCM_LEG_PORT_ID;
+
+ /* Original FCS value */
+ if (__skb_pad(skb, ETH_FCS_LEN, false))
+ return NULL;
+ skb_put_data(skb, &fcs_val, ETH_FCS_LEN);
+
+ return skb;
+}
+
+static const struct dsa_device_ops brcm_legacy_fcs_netdev_ops = {
+ .name = BRCM_LEGACY_FCS_NAME,
+ .proto = DSA_TAG_PROTO_BRCM_LEGACY_FCS,
+ .xmit = brcm_leg_fcs_tag_xmit,
+ .rcv = brcm_leg_tag_rcv,
+ .needed_headroom = BRCM_LEG_TAG_LEN,
+};
+
+DSA_TAG_DRIVER(brcm_legacy_fcs_netdev_ops);
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_BRCM_LEGACY_FCS, BRCM_LEGACY_FCS_NAME);
+#endif /* CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS */
+
#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_PREPEND)
static struct sk_buff *brcm_tag_xmit_prepend(struct sk_buff *skb,
struct net_device *dev)
@@ -328,6 +396,9 @@ static struct dsa_tag_driver *dsa_tag_dr
#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY)
&DSA_TAG_DRIVER_NAME(brcm_legacy_netdev_ops),
#endif
+#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS)
+ &DSA_TAG_DRIVER_NAME(brcm_legacy_fcs_netdev_ops),
+#endif
#if IS_ENABLED(CONFIG_NET_DSA_TAG_BRCM_PREPEND)
&DSA_TAG_DRIVER_NAME(brcm_prepend_netdev_ops),
#endif

48
target/linux/generic/backport-6.12/612-03-v6.17-net-dsa-b53-support-legacy-FCS-tags.patch Normal file
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@@ -0,0 +1,48 @@
From c3cf059a4d419b9c888ce7e9952fa13ba7569b61 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:49 +0200
Subject: [PATCH] net: dsa: b53: support legacy FCS tags
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Commit 46c5176c586c ("net: dsa: b53: support legacy tags") introduced
support for legacy tags, but it turns out that BCM5325 and BCM5365
switches require the original FCS value and length, so they have to be
treated differently.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-4-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/Kconfig | 1 +
drivers/net/dsa/b53/b53_common.c | 7 +++++--
2 files changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/net/dsa/b53/Kconfig
+++ b/drivers/net/dsa/b53/Kconfig
@@ -5,6 +5,7 @@ menuconfig B53
select NET_DSA_TAG_NONE
select NET_DSA_TAG_BRCM
select NET_DSA_TAG_BRCM_LEGACY
+ select NET_DSA_TAG_BRCM_LEGACY_FCS
select NET_DSA_TAG_BRCM_PREPEND
help
This driver adds support for Broadcom managed switch chips. It supports
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -2245,8 +2245,11 @@ enum dsa_tag_protocol b53_get_tag_protoc
goto out;
}
- /* Older models require a different 6 byte tag */
- if (is5325(dev) || is5365(dev) || is63xx(dev)) {
+ /* Older models require different 6 byte tags */
+ if (is5325(dev) || is5365(dev)) {
+ dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY_FCS;
+ goto out;
+ } else if (is63xx(dev)) {
dev->tag_protocol = DSA_TAG_PROTO_BRCM_LEGACY;
goto out;
}

112
target/linux/generic/backport-6.12/612-04-v6.17-net-dsa-b53-detect-BCM5325-variants.patch Normal file
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@@ -0,0 +1,112 @@
From 0cbec9aef5a86194117a956546dc1aec95031f37 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:50 +0200
Subject: [PATCH] net: dsa: b53: detect BCM5325 variants
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
We need to be able to differentiate the BCM5325 variants because:
- BCM5325M switches lack the ARLIO_PAGE->VLAN_ID_IDX register.
- BCM5325E have less 512 ARL buckets instead of 1024.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-5-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 24 +++++++++++++++++++++---
drivers/net/dsa/b53/b53_priv.h | 19 +++++++++++++++++++
2 files changed, 40 insertions(+), 3 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1778,7 +1778,8 @@ static int b53_arl_op(struct b53_device
/* Perform a read for the given MAC and VID */
b53_write48(dev, B53_ARLIO_PAGE, B53_MAC_ADDR_IDX, mac);
- b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
+ if (!is5325m(dev))
+ b53_write16(dev, B53_ARLIO_PAGE, B53_VLAN_ID_IDX, vid);
/* Issue a read operation for this MAC */
ret = b53_arl_rw_op(dev, 1);
@@ -2844,6 +2845,9 @@ static int b53_switch_init(struct b53_de
}
}
+ if (is5325e(dev))
+ dev->num_arl_buckets = 512;
+
dev->num_ports = fls(dev->enabled_ports);
dev->ds->num_ports = min_t(unsigned int, dev->num_ports, DSA_MAX_PORTS);
@@ -2945,10 +2949,24 @@ int b53_switch_detect(struct b53_device
b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, 0xf);
b53_read16(dev, B53_VLAN_PAGE, B53_VLAN_TABLE_ACCESS_25, &tmp);
- if (tmp == 0xf)
+ if (tmp == 0xf) {
+ u32 phy_id;
+ int val;
+
dev->chip_id = BCM5325_DEVICE_ID;
- else
+
+ val = b53_phy_read16(dev->ds, 0, MII_PHYSID1);
+ phy_id = (val & 0xffff) << 16;
+ val = b53_phy_read16(dev->ds, 0, MII_PHYSID2);
+ phy_id |= (val & 0xfff0);
+
+ if (phy_id == 0x00406330)
+ dev->variant_id = B53_VARIANT_5325M;
+ else if (phy_id == 0x0143bc30)
+ dev->variant_id = B53_VARIANT_5325E;
+ } else {
dev->chip_id = BCM5365_DEVICE_ID;
+ }
break;
case BCM5389_DEVICE_ID:
case BCM5395_DEVICE_ID:
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -84,6 +84,12 @@ enum {
BCM53134_DEVICE_ID = 0x5075,
};
+enum b53_variant_id {
+ B53_VARIANT_NONE = 0,
+ B53_VARIANT_5325E,
+ B53_VARIANT_5325M,
+};
+
struct b53_pcs {
struct phylink_pcs pcs;
struct b53_device *dev;
@@ -118,6 +124,7 @@ struct b53_device {
/* chip specific data */
u32 chip_id;
+ enum b53_variant_id variant_id;
u8 core_rev;
u8 vta_regs[3];
u8 duplex_reg;
@@ -165,6 +172,18 @@ static inline int is5325(struct b53_devi
return dev->chip_id == BCM5325_DEVICE_ID;
}
+static inline int is5325e(struct b53_device *dev)
+{
+ return is5325(dev) &&
+ dev->variant_id == B53_VARIANT_5325E;
+}
+
+static inline int is5325m(struct b53_device *dev)
+{
+ return is5325(dev) &&
+ dev->variant_id == B53_VARIANT_5325M;
+}
+
static inline int is5365(struct b53_device *dev)
{
#ifdef CONFIG_BCM47XX

250
target/linux/generic/backport-6.12/612-05-v6.17-net-dsa-b53-add-support-for-FDB-operations-on-5325-5365.patch Normal file
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@@ -0,0 +1,250 @@
From c45655386e532c85ff1d679fc2aa40b3aaff9916 Mon Sep 17 00:00:00 2001
From: Florian Fainelli <f.fainelli@gmail.com>
Date: Sat, 14 Jun 2025 09:59:51 +0200
Subject: [PATCH] net: dsa: b53: add support for FDB operations on 5325/5365
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 and BCM5365 are part of a much older generation of switches which,
due to their limited number of ports and VLAN entries (up to 256) allowed
a single 64-bit register to hold a full ARL entry.
This requires a little bit of massaging when reading, writing and
converting ARL entries in both directions.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-6-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 101 +++++++++++++++++++++++++------
drivers/net/dsa/b53/b53_priv.h | 29 +++++++++
drivers/net/dsa/b53/b53_regs.h | 7 ++-
3 files changed, 115 insertions(+), 22 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1764,6 +1764,45 @@ static int b53_arl_read(struct b53_devic
return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
}
+static int b53_arl_read_25(struct b53_device *dev, u64 mac,
+ u16 vid, 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;
+
+ b53_read64(dev, B53_ARLIO_PAGE,
+ B53_ARLTBL_MAC_VID_ENTRY(i), &mac_vid);
+
+ b53_arl_to_entry_25(ent, mac_vid);
+
+ if (!(mac_vid & ARLTBL_VALID_25)) {
+ set_bit(i, free_bins);
+ continue;
+ }
+ if ((mac_vid & ARLTBL_MAC_MASK) != mac)
+ continue;
+ if (dev->vlan_enabled &&
+ ((mac_vid >> ARLTBL_VID_S_65) & ARLTBL_VID_MASK_25) != vid)
+ continue;
+ *idx = i;
+ return 0;
+ }
+
+ *idx = find_first_bit(free_bins, dev->num_arl_bins);
+ return *idx >= dev->num_arl_bins ? -ENOSPC : -ENOENT;
+}
+
static int b53_arl_op(struct b53_device *dev, int op, int port,
const unsigned char *addr, u16 vid, bool is_valid)
{
@@ -1786,7 +1825,10 @@ static int b53_arl_op(struct b53_device
if (ret)
return ret;
- ret = b53_arl_read(dev, mac, vid, &ent, &idx);
+ if (is5325(dev) || is5365(dev))
+ ret = b53_arl_read_25(dev, mac, vid, &ent, &idx);
+ else
+ ret = b53_arl_read(dev, mac, vid, &ent, &idx);
/* If this is a read, just finish now */
if (op)
@@ -1830,12 +1872,17 @@ static int b53_arl_op(struct b53_device
ent.is_static = true;
ent.is_age = false;
memcpy(ent.mac, addr, ETH_ALEN);
- b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
+ if (is5325(dev) || is5365(dev))
+ b53_arl_from_entry_25(&mac_vid, &ent);
+ else
+ 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);
+
+ if (!is5325(dev) && !is5365(dev))
+ b53_write32(dev, B53_ARLIO_PAGE,
+ B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
return b53_arl_rw_op(dev, 0);
}
@@ -1847,12 +1894,6 @@ int b53_fdb_add(struct dsa_switch *ds, i
struct b53_device *priv = ds->priv;
int ret;
- /* 5325 and 5365 require some more massaging, but could
- * be supported eventually
- */
- if (is5325(priv) || is5365(priv))
- return -EOPNOTSUPP;
-
mutex_lock(&priv->arl_mutex);
ret = b53_arl_op(priv, 0, port, addr, vid, true);
mutex_unlock(&priv->arl_mutex);
@@ -1879,10 +1920,15 @@ EXPORT_SYMBOL(b53_fdb_del);
static int b53_arl_search_wait(struct b53_device *dev)
{
unsigned int timeout = 1000;
- u8 reg;
+ u8 reg, offset;
+
+ if (is5325(dev) || is5365(dev))
+ offset = B53_ARL_SRCH_CTL_25;
+ else
+ offset = B53_ARL_SRCH_CTL;
do {
- b53_read8(dev, B53_ARLIO_PAGE, B53_ARL_SRCH_CTL, &reg);
+ b53_read8(dev, B53_ARLIO_PAGE, offset, &reg);
if (!(reg & ARL_SRCH_STDN))
return 0;
@@ -1899,13 +1945,24 @@ static void b53_arl_search_rd(struct b53
struct b53_arl_entry *ent)
{
u64 mac_vid;
- u32 fwd_entry;
- 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);
+ 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_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 int b53_fdb_copy(int port, const struct b53_arl_entry *ent,
@@ -1926,14 +1983,20 @@ int b53_fdb_dump(struct dsa_switch *ds,
struct b53_device *priv = ds->priv;
struct b53_arl_entry results[2];
unsigned int count = 0;
+ u8 offset;
int ret;
u8 reg;
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, B53_ARL_SRCH_CTL, reg);
+ b53_write8(priv, offset, B53_ARL_SRCH_CTL, reg);
do {
ret = b53_arl_search_wait(priv);
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -317,6 +317,19 @@ static inline void b53_arl_to_entry(stru
ent->vid = mac_vid >> ARLTBL_VID_S;
}
+static inline void b53_arl_to_entry_25(struct b53_arl_entry *ent,
+ u64 mac_vid)
+{
+ memset(ent, 0, sizeof(*ent));
+ ent->port = (mac_vid >> ARLTBL_DATA_PORT_ID_S_25) &
+ ARLTBL_DATA_PORT_ID_MASK_25;
+ ent->is_valid = !!(mac_vid & ARLTBL_VALID_25);
+ 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;
+}
+
static inline void b53_arl_from_entry(u64 *mac_vid, u32 *fwd_entry,
const struct b53_arl_entry *ent)
{
@@ -331,6 +344,22 @@ static inline void b53_arl_from_entry(u6
*fwd_entry |= ARLTBL_AGE;
}
+static inline void b53_arl_from_entry_25(u64 *mac_vid,
+ const struct b53_arl_entry *ent)
+{
+ *mac_vid = ether_addr_to_u64(ent->mac);
+ *mac_vid |= (u64)(ent->port & ARLTBL_DATA_PORT_ID_MASK_25) <<
+ ARLTBL_DATA_PORT_ID_S_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;
+}
+
#ifdef CONFIG_BCM47XX
#include <linux/bcm47xx_nvram.h>
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -324,9 +324,10 @@
#define ARLTBL_VID_MASK 0xfff
#define ARLTBL_DATA_PORT_ID_S_25 48
#define ARLTBL_DATA_PORT_ID_MASK_25 0xf
-#define ARLTBL_AGE_25 BIT(61)
-#define ARLTBL_STATIC_25 BIT(62)
-#define ARLTBL_VALID_25 BIT(63)
+#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)
/* ARL Table Data Entry N Registers (32 bit) */
#define B53_ARLTBL_DATA_ENTRY(n) ((0x10 * (n)) + 0x18)

51
target/linux/generic/backport-6.12/612-06-v6.17-net-dsa-b53-prevent-FAST_AGE-access-on-BCM5325.patch Normal file
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@@ -0,0 +1,51 @@
From 9b6c767c312b4709e9aeb2314a6b47863e7fb72d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:52 +0200
Subject: [PATCH] net: dsa: b53: prevent FAST_AGE access on BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement FAST_AGE registers so we should avoid reading or
writing them.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-7-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -487,6 +487,9 @@ static int b53_flush_arl(struct b53_devi
{
unsigned int i;
+ if (is5325(dev))
+ return 0;
+
b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_CTRL,
FAST_AGE_DONE | FAST_AGE_DYNAMIC | mask);
@@ -511,6 +514,9 @@ out:
static int b53_fast_age_port(struct b53_device *dev, int port)
{
+ if (is5325(dev))
+ return 0;
+
b53_write8(dev, B53_CTRL_PAGE, B53_FAST_AGE_PORT_CTRL, port);
return b53_flush_arl(dev, FAST_AGE_PORT);
@@ -518,6 +524,9 @@ static int b53_fast_age_port(struct b53_
static int b53_fast_age_vlan(struct b53_device *dev, u16 vid)
{
+ if (is5325(dev))
+ return 0;
+
b53_write16(dev, B53_CTRL_PAGE, B53_FAST_AGE_VID_CTRL, vid);
return b53_flush_arl(dev, FAST_AGE_VLAN);

39
target/linux/generic/backport-6.12/612-07-v6.17-net-dsa-b53-prevent-SWITCH_CTRL-access-on-BCM5325.patch Normal file
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@@ -0,0 +1,39 @@
From 22ccaaca43440e90a3b68d2183045b42247dc4be Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:53 +0200
Subject: [PATCH] net: dsa: b53: prevent SWITCH_CTRL access on BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement SWITCH_CTRL register so we should avoid reading
or writing it.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-8-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -361,11 +361,12 @@ static void b53_set_forwarding(struct b5
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_MODE, mgmt);
- /* Include IMP port in dumb forwarding mode
- */
- b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
- mgmt |= B53_MII_DUMB_FWDG_EN;
- b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
+ if (!is5325(dev)) {
+ /* Include IMP port in dumb forwarding mode */
+ b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
+ mgmt |= B53_MII_DUMB_FWDG_EN;
+ b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
+ }
/* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
* frames should be flooded or not.

57
target/linux/generic/backport-6.12/612-08-v6.17-net-dsa-b53-fix-IP_MULTICAST_CTRL-on-BCM5325.patch Normal file
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@@ -0,0 +1,57 @@
From 044d5ce2788b165798bfd173548e61bf7b6baf4d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:54 +0200
Subject: [PATCH] net: dsa: b53: fix IP_MULTICAST_CTRL on BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement B53_UC_FWD_EN, B53_MC_FWD_EN or B53_IPMC_FWD_EN.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-9-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 18 +++++++++++-------
drivers/net/dsa/b53/b53_regs.h | 1 +
2 files changed, 12 insertions(+), 7 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -366,14 +366,18 @@ static void b53_set_forwarding(struct b5
b53_read8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, &mgmt);
mgmt |= B53_MII_DUMB_FWDG_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_SWITCH_CTRL, mgmt);
- }
- /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
- * frames should be flooded or not.
- */
- b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
- mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
- b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
+ /* Look at B53_UC_FWD_EN and B53_MC_FWD_EN to decide whether
+ * frames should be flooded or not.
+ */
+ b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
+ mgmt |= B53_UC_FWD_EN | B53_MC_FWD_EN | B53_IPMC_FWD_EN;
+ b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
+ } else {
+ b53_read8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, &mgmt);
+ mgmt |= B53_IP_MCAST_25;
+ b53_write8(dev, B53_CTRL_PAGE, B53_IP_MULTICAST_CTRL, mgmt);
+ }
}
static void b53_enable_vlan(struct b53_device *dev, int port, bool enable,
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -106,6 +106,7 @@
/* IP Multicast control (8 bit) */
#define B53_IP_MULTICAST_CTRL 0x21
+#define B53_IP_MCAST_25 BIT(0)
#define B53_IPMC_FWD_EN BIT(1)
#define B53_UC_FWD_EN BIT(6)
#define B53_MC_FWD_EN BIT(7)

46
target/linux/generic/backport-6.12/612-09-v6.17-net-dsa-b53-prevent-DIS_LEARNING-access-on-BCM5325.patch Normal file
View File

@@ -0,0 +1,46 @@
From 800728abd9f83bda4de62a30ce62a8b41c242020 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:55 +0200
Subject: [PATCH] net: dsa: b53: prevent DIS_LEARNING access on BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement DIS_LEARNING register so we should avoid reading
or writing it.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-10-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -593,6 +593,9 @@ static void b53_port_set_learning(struct
{
u16 reg;
+ if (is5325(dev))
+ return;
+
b53_read16(dev, B53_CTRL_PAGE, B53_DIS_LEARNING, &reg);
if (learning)
reg &= ~BIT(port);
@@ -2247,7 +2250,13 @@ int b53_br_flags_pre(struct dsa_switch *
struct switchdev_brport_flags flags,
struct netlink_ext_ack *extack)
{
- if (flags.mask & ~(BR_FLOOD | BR_MCAST_FLOOD | BR_LEARNING))
+ struct b53_device *dev = ds->priv;
+ unsigned long mask = (BR_FLOOD | BR_MCAST_FLOOD);
+
+ if (!is5325(dev))
+ mask |= BR_LEARNING;
+
+ if (flags.mask & ~mask)
return -EINVAL;
return 0;

33
target/linux/generic/backport-6.12/612-10-v6.17-net-dsa-b53-prevent-BRCM_HDR-access-on-older-devices.patch Normal file
View File

@@ -0,0 +1,33 @@
From e17813968b08b1b09bf80699223dea48851cbd07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:56 +0200
Subject: [PATCH] net: dsa: b53: prevent BRCM_HDR access on older devices
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Older switches don't implement BRCM_HDR register so we should avoid
reading or writing it.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-11-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -730,6 +730,11 @@ void b53_brcm_hdr_setup(struct dsa_switc
hdr_ctl |= GC_FRM_MGMT_PORT_M;
b53_write8(dev, B53_MGMT_PAGE, B53_GLOBAL_CONFIG, hdr_ctl);
+ /* B53_BRCM_HDR not present on devices with legacy tags */
+ if (dev->tag_protocol == DSA_TAG_PROTO_BRCM_LEGACY ||
+ dev->tag_protocol == DSA_TAG_PROTO_BRCM_LEGACY_FCS)
+ return;
+
/* Enable Broadcom tags for IMP port */
b53_read8(dev, B53_MGMT_PAGE, B53_BRCM_HDR, &hdr_ctl);
if (tag_en)

77
target/linux/generic/backport-6.12/612-11-v6.17-net-dsa-b53-prevent-GMII_PORT_OVERRIDE_CTRL-access-on-BCM5325.patch Normal file
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@@ -0,0 +1,77 @@
From 37883bbc45a8555d6eca88d3a9730504d2dac86c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:57 +0200
Subject: [PATCH] net: dsa: b53: prevent GMII_PORT_OVERRIDE_CTRL access on
BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement GMII_PORT_OVERRIDE_CTRL register so we should
avoid reading or writing it.
PORT_OVERRIDE_RX_FLOW and PORT_OVERRIDE_TX_FLOW aren't defined on BCM5325
and we should use PORT_OVERRIDE_LP_FLOW_25 instead.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-12-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 21 +++++++++++++++++----
drivers/net/dsa/b53/b53_regs.h | 1 +
2 files changed, 18 insertions(+), 4 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1279,6 +1279,8 @@ static void b53_force_link(struct b53_de
if (port == dev->imp_port) {
off = B53_PORT_OVERRIDE_CTRL;
val = PORT_OVERRIDE_EN;
+ } else if (is5325(dev)) {
+ return;
} else {
off = B53_GMII_PORT_OVERRIDE_CTRL(port);
val = GMII_PO_EN;
@@ -1303,6 +1305,8 @@ static void b53_force_port_config(struct
if (port == dev->imp_port) {
off = B53_PORT_OVERRIDE_CTRL;
val = PORT_OVERRIDE_EN;
+ } else if (is5325(dev)) {
+ return;
} else {
off = B53_GMII_PORT_OVERRIDE_CTRL(port);
val = GMII_PO_EN;
@@ -1333,10 +1337,19 @@ static void b53_force_port_config(struct
return;
}
- if (rx_pause)
- reg |= PORT_OVERRIDE_RX_FLOW;
- if (tx_pause)
- reg |= PORT_OVERRIDE_TX_FLOW;
+ if (rx_pause) {
+ if (is5325(dev))
+ reg |= PORT_OVERRIDE_LP_FLOW_25;
+ else
+ reg |= PORT_OVERRIDE_RX_FLOW;
+ }
+
+ if (tx_pause) {
+ if (is5325(dev))
+ reg |= PORT_OVERRIDE_LP_FLOW_25;
+ else
+ reg |= PORT_OVERRIDE_TX_FLOW;
+ }
b53_write8(dev, B53_CTRL_PAGE, off, reg);
}
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -95,6 +95,7 @@
#define PORT_OVERRIDE_SPEED_10M (0 << PORT_OVERRIDE_SPEED_S)
#define PORT_OVERRIDE_SPEED_100M (1 << PORT_OVERRIDE_SPEED_S)
#define PORT_OVERRIDE_SPEED_1000M (2 << PORT_OVERRIDE_SPEED_S)
+#define PORT_OVERRIDE_LP_FLOW_25 BIT(3) /* BCM5325 only */
#define PORT_OVERRIDE_RV_MII_25 BIT(4) /* BCM5325 only */
#define PORT_OVERRIDE_RX_FLOW BIT(4)
#define PORT_OVERRIDE_TX_FLOW BIT(5)

128
target/linux/generic/backport-6.12/612-12-v6.17-net-dsa-b53-fix-unicast-multicast-flooding-on-BCM5325.patch Normal file
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@@ -0,0 +1,128 @@
From 651c9e71ffe44e99b5a9b011271c2117f0353b32 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:58 +0200
Subject: [PATCH] net: dsa: b53: fix unicast/multicast flooding on BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5325 doesn't implement UC_FLOOD_MASK, MC_FLOOD_MASK and IPMC_FLOOD_MASK
registers.
This has to be handled differently with other pages and registers.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-13-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 60 ++++++++++++++++++++++----------
drivers/net/dsa/b53/b53_regs.h | 13 +++++++
2 files changed, 55 insertions(+), 18 deletions(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -560,12 +560,24 @@ static void b53_port_set_ucast_flood(str
{
u16 uc;
- b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc);
- if (unicast)
- uc |= BIT(port);
- else
- uc &= ~BIT(port);
- b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc);
+ if (is5325(dev)) {
+ if (port == B53_CPU_PORT_25)
+ port = B53_CPU_PORT;
+
+ b53_read16(dev, B53_IEEE_PAGE, B53_IEEE_UCAST_DLF, &uc);
+ if (unicast)
+ uc |= BIT(port) | B53_IEEE_UCAST_DROP_EN;
+ else
+ uc &= ~BIT(port);
+ b53_write16(dev, B53_IEEE_PAGE, B53_IEEE_UCAST_DLF, uc);
+ } else {
+ b53_read16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, &uc);
+ if (unicast)
+ uc |= BIT(port);
+ else
+ uc &= ~BIT(port);
+ b53_write16(dev, B53_CTRL_PAGE, B53_UC_FLOOD_MASK, uc);
+ }
}
static void b53_port_set_mcast_flood(struct b53_device *dev, int port,
@@ -573,19 +585,31 @@ static void b53_port_set_mcast_flood(str
{
u16 mc;
- b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc);
- if (multicast)
- mc |= BIT(port);
- else
- mc &= ~BIT(port);
- b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc);
-
- b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc);
- if (multicast)
- mc |= BIT(port);
- else
- mc &= ~BIT(port);
- b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc);
+ if (is5325(dev)) {
+ if (port == B53_CPU_PORT_25)
+ port = B53_CPU_PORT;
+
+ b53_read16(dev, B53_IEEE_PAGE, B53_IEEE_MCAST_DLF, &mc);
+ if (multicast)
+ mc |= BIT(port) | B53_IEEE_MCAST_DROP_EN;
+ else
+ mc &= ~BIT(port);
+ b53_write16(dev, B53_IEEE_PAGE, B53_IEEE_MCAST_DLF, mc);
+ } else {
+ b53_read16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, &mc);
+ if (multicast)
+ mc |= BIT(port);
+ else
+ mc &= ~BIT(port);
+ b53_write16(dev, B53_CTRL_PAGE, B53_MC_FLOOD_MASK, mc);
+
+ b53_read16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, &mc);
+ if (multicast)
+ mc |= BIT(port);
+ else
+ mc &= ~BIT(port);
+ b53_write16(dev, B53_CTRL_PAGE, B53_IPMC_FLOOD_MASK, mc);
+ }
}
static void b53_port_set_learning(struct b53_device *dev, int port,
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -29,6 +29,7 @@
#define B53_ARLIO_PAGE 0x05 /* ARL Access */
#define B53_FRAMEBUF_PAGE 0x06 /* Management frame access */
#define B53_MEM_ACCESS_PAGE 0x08 /* Memory access */
+#define B53_IEEE_PAGE 0x0a /* IEEE 802.1X */
/* PHY Registers */
#define B53_PORT_MII_PAGE(i) (0x10 + (i)) /* Port i MII Registers */
@@ -369,6 +370,18 @@
#define B53_ARL_SRCH_RSTL(x) (B53_ARL_SRCH_RSTL_0 + ((x) * 0x10))
/*************************************************************************
+ * IEEE 802.1X Registers
+ *************************************************************************/
+
+/* Multicast DLF Drop Control register (16 bit) */
+#define B53_IEEE_MCAST_DLF 0x94
+#define B53_IEEE_MCAST_DROP_EN BIT(11)
+
+/* Unicast DLF Drop Control register (16 bit) */
+#define B53_IEEE_UCAST_DLF 0x96
+#define B53_IEEE_UCAST_DROP_EN BIT(11)
+
+/*************************************************************************
* Port VLAN Registers
*************************************************************************/

32
target/linux/generic/backport-6.12/612-13-v6.17-net-dsa-b53-fix-b53_imp_vlan_setup-for-BCM5325.patch Normal file
View File

@@ -0,0 +1,32 @@
From c00df1018791185ea398f78af415a2a0aaa0c79c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 09:59:59 +0200
Subject: [PATCH] net: dsa: b53: fix b53_imp_vlan_setup for BCM5325
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
CPU port should be B53_CPU_PORT instead of B53_CPU_PORT_25 for
B53_PVLAN_PORT_MASK register.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Link: https://patch.msgid.link/20250614080000.1884236-14-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -543,6 +543,10 @@ void b53_imp_vlan_setup(struct dsa_switc
unsigned int i;
u16 pvlan;
+ /* BCM5325 CPU port is at 8 */
+ if ((is5325(dev) || is5365(dev)) && cpu_port == B53_CPU_PORT_25)
+ cpu_port = B53_CPU_PORT;
+
/* Enable the IMP port to be in the same VLAN as the other ports
* on a per-port basis such that we only have Port i and IMP in
* the same VLAN.

59
target/linux/generic/backport-6.12/612-14-v6.17-net-dsa-b53-ensure-BCM5325-PHYs-are-enabled.patch Normal file
View File

@@ -0,0 +1,59 @@
From 966a83df36c6f27476ac3501771422e7852098bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Sat, 14 Jun 2025 10:00:00 +0200
Subject: [PATCH] net: dsa: b53: ensure BCM5325 PHYs are enabled
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
According to the datasheet, BCM5325 uses B53_PD_MODE_CTRL_25 register to
disable clocking to individual PHYs.
Only ports 1-4 can be enabled or disabled and the datasheet is explicit
about not toggling BIT(0) since it disables the PLL power and the switch.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250614080000.1884236-15-noltari@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/dsa/b53/b53_common.c | 13 +++++++++++++
drivers/net/dsa/b53/b53_regs.h | 5 ++++-
2 files changed, 17 insertions(+), 1 deletion(-)
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -660,6 +660,19 @@ int b53_setup_port(struct dsa_switch *ds
if (dsa_is_user_port(ds, port))
b53_set_eap_mode(dev, port, EAP_MODE_SIMPLIFIED);
+ if (is5325(dev) &&
+ in_range(port, 1, 4)) {
+ u8 reg;
+
+ b53_read8(dev, B53_CTRL_PAGE, B53_PD_MODE_CTRL_25, &reg);
+ reg &= ~PD_MODE_POWER_DOWN_PORT(0);
+ if (dsa_is_unused_port(ds, port))
+ reg |= PD_MODE_POWER_DOWN_PORT(port);
+ else
+ reg &= ~PD_MODE_POWER_DOWN_PORT(port);
+ b53_write8(dev, B53_CTRL_PAGE, B53_PD_MODE_CTRL_25, reg);
+ }
+
return 0;
}
EXPORT_SYMBOL(b53_setup_port);
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -103,8 +103,11 @@
#define PORT_OVERRIDE_SPEED_2000M BIT(6) /* BCM5301X only, requires setting 1000M */
#define PORT_OVERRIDE_EN BIT(7) /* Use the register contents */
-/* Power-down mode control */
+/* Power-down mode control (8 bit) */
#define B53_PD_MODE_CTRL_25 0x0f
+#define PD_MODE_PORT_MASK 0x1f
+/* Bit 0 also powers down the switch. */
+#define PD_MODE_POWER_DOWN_PORT(i) BIT(i)
/* IP Multicast control (8 bit) */
#define B53_IP_MULTICAST_CTRL 0x21

1
target/linux/generic/config-6.12
View File

@@ -4071,6 +4071,7 @@ CONFIG_NET_CORE=y
# CONFIG_NET_DSA_TAG_AR9331 is not set
# CONFIG_NET_DSA_TAG_BRCM is not set
# CONFIG_NET_DSA_TAG_BRCM_LEGACY is not set
# CONFIG_NET_DSA_TAG_BRCM_LEGACY_FCS is not set
# CONFIG_NET_DSA_TAG_BRCM_PREPEND is not set
# CONFIG_NET_DSA_TAG_DSA is not set
# CONFIG_NET_DSA_TAG_EDSA is not set