[PATCH net-next v2 5/9] net: atlantic: add AQC113 filter data structures and firmware query and firmware query firmware query
From: sukhdeeps
Date: Fri May 08 2026 - 08:08:05 EST
From: Sukhdeep Singh <sukhdeeps@xxxxxxxxxxx>
Add filter infrastructure for AQC113 hardware:
- Define L3 (IPv4/IPv6), L4 (TCP/UDP/SCTP), and combined L3L4 filter
structures with reference-counted sharing support.
- Define tag policy structure for ethertype filter management.
- Add RPF L3/L4 command bit definitions for filter programming.
- Add filter count constants for L3L4, L3V4, L4, VLAN, and ethertype.
- Extend hw_atl2_priv with filter arrays, base indices, and counts
discovered from firmware.
Query filter capabilities from firmware shared memory at init time
to discover available L2/L3/L4/VLAN/ethertype filter resources and
ART (Action Resolver Table) configuration.
Add hardware register dump utility for AQC113 debug support.
Signed-off-by: Sukhdeep Singh <sukhdeeps@xxxxxxxxxxx>
---
.../atlantic/hw_atl2/hw_atl2_internal.h | 63 +++++++++++++++++++
.../aquantia/atlantic/hw_atl2/hw_atl2_utils.c | 33 ++++++++++
.../aquantia/atlantic/hw_atl2/hw_atl2_utils.h | 5 ++
.../atlantic/hw_atl2/hw_atl2_utils_fw.c | 52 +++++++++++++++
4 files changed, 153 insertions(+)
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_internal.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_internal.h
index 5a89bb8722f9..fc086d84fb91 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_internal.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_internal.h
@@ -84,6 +84,18 @@ enum HW_ATL2_RPF_ART_INDEX {
HW_ATL_VLAN_MAX_FILTERS,
};
+#define HW_ATL2_RPF_L3_CMD_EN BIT(0)
+#define HW_ATL2_RPF_L3_CMD_SA_EN BIT(1)
+#define HW_ATL2_RPF_L3_CMD_DA_EN BIT(2)
+#define HW_ATL2_RPF_L3_CMD_PROTO_EN BIT(3)
+#define HW_ATL2_RPF_L3_V6_CMD_EN BIT(0x10)
+#define HW_ATL2_RPF_L3_V6_CMD_SA_EN BIT(0x11)
+#define HW_ATL2_RPF_L3_V6_CMD_DA_EN BIT(0x12)
+#define HW_ATL2_RPF_L3_V6_CMD_PROTO_EN BIT(0x13)
+#define HW_ATL2_RPF_L4_CMD_EN BIT(0)
+#define HW_ATL2_RPF_L4_CMD_DP_EN BIT(1)
+#define HW_ATL2_RPF_L4_CMD_SP_EN BIT(2)
+
#define HW_ATL2_ACTION(ACTION, RSS, INDEX, VALID) \
((((ACTION) & 0x3U) << 8) | \
(((RSS) & 0x1U) << 7) | \
@@ -94,6 +106,12 @@ enum HW_ATL2_RPF_ART_INDEX {
#define HW_ATL2_ACTION_DISABLE HW_ATL2_ACTION(0, 0, 0, 0)
#define HW_ATL2_ACTION_ASSIGN_QUEUE(QUEUE) HW_ATL2_ACTION(1, 0, (QUEUE), 1)
#define HW_ATL2_ACTION_ASSIGN_TC(TC) HW_ATL2_ACTION(1, 1, (TC), 1)
+#define HW_ATL2_RPF_L3L4_FILTERS 8
+#define HW_ATL2_RPF_L3V4_FILTERS 8
+#define HW_ATL2_RPF_L4_FILTERS 8
+#define HW_ATL2_RPF_VLAN_FILTERS 16
+#define HW_ATL2_RPF_ETYPE_FILTERS 16
+#define HW_ATL2_RPF_ETYPE_TAGS 7
enum HW_ATL2_RPF_RSS_HASH_TYPE {
HW_ATL2_RPF_RSS_HASH_TYPE_NONE = 0,
@@ -119,9 +137,54 @@ enum HW_ATL2_RPF_RSS_HASH_TYPE {
#define HW_ATL_MCAST_FLT_ANY_TO_HOST 0x00010FFFU
+struct hw_atl2_l3_filter {
+ u8 proto;
+ u8 usage;
+ u32 cmd;
+ u32 srcip[4];
+ u32 dstip[4];
+};
+
+struct hw_atl2_l4_filter {
+ u8 usage;
+ u32 cmd;
+ u16 sport;
+ u16 dport;
+};
+
+struct hw_atl2_l3l4_filter {
+ s8 l3_index;
+ s8 l4_index;
+ u8 ipv6;
+};
+
+struct hw_atl2_tag_policy {
+ u16 action;
+ u16 usage;
+};
+
struct hw_atl2_priv {
+ struct hw_atl2_l3_filter l3_v4_filters[HW_ATL2_RPF_L3L4_FILTERS];
+ struct hw_atl2_l3_filter l3_v6_filters[HW_ATL2_RPF_L3L4_FILTERS];
+ struct hw_atl2_l4_filter l4_filters[HW_ATL2_RPF_L3L4_FILTERS];
+ struct hw_atl2_l3l4_filter l3l4_filters[HW_ATL2_RPF_L3L4_FILTERS];
+ struct hw_atl2_tag_policy etype_policy[HW_ATL2_RPF_ETYPE_FILTERS];
struct statistics_s last_stats;
unsigned int art_base_index;
+ unsigned int art_count;
+ unsigned int l2_filters_base_index;
+ unsigned int l2_filter_count;
+ unsigned int etype_filter_base_index;
+ unsigned int etype_filter_count;
+ unsigned int etype_filter_tag_top;
+ unsigned int vlan_filter_base_index;
+ unsigned int vlan_filter_count;
+ unsigned int l3_v4_filter_base_index;
+ unsigned int l3_v4_filter_count;
+ unsigned int l3_v6_filter_base_index;
+ unsigned int l3_v6_filter_count;
+ unsigned int l4_filter_base_index;
+ unsigned int l4_filter_count;
};
#endif /* HW_ATL2_INTERNAL_H */
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.c
index 0fe6257d9c08..ffd723dcfb63 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.c
@@ -128,3 +128,36 @@ int hw_atl2_utils_soft_reset(struct aq_hw_s *self)
err_exit:
return err;
}
+
+static const u32 hw_atl2_utils_hw_mac_regs[] = {
+ 0x00005580U, 0x00005590U, 0x000055B0U, 0x000055B4U,
+ 0x000055C0U, 0x00005B00U, 0x00005B04U, 0x00005B08U,
+ 0x00005B0CU, 0x00005B10U, 0x00005B14U, 0x00005B18U,
+ 0x00005B1CU, 0x00005B20U, 0x00005B24U, 0x00005B28U,
+ 0x00005B2CU, 0x00005B30U, 0x00005B34U, 0x00005B38U,
+ 0x00005B3CU, 0x00005B40U, 0x00005B44U, 0x00005B48U,
+ 0x00005B4CU, 0x00005B50U, 0x00005B54U, 0x00005B58U,
+ 0x00005B5CU, 0x00005B60U, 0x00005B64U, 0x00005B68U,
+ 0x00005B6CU, 0x00005B70U, 0x00005B74U, 0x00005B78U,
+ 0x00005B7CU, 0x00007C00U, 0x00007C04U, 0x00007C08U,
+ 0x00007C0CU, 0x00007C10U, 0x00007C14U, 0x00007C18U,
+ 0x00007C1CU, 0x00007C20U, 0x00007C40U, 0x00007C44U,
+ 0x00007C48U, 0x00007C4CU, 0x00007C50U, 0x00007C54U,
+ 0x00007C58U, 0x00007C5CU, 0x00007C60U, 0x00007C80U,
+ 0x00007C84U, 0x00007C88U, 0x00007C8CU, 0x00007C90U,
+ 0x00007C94U, 0x00007C98U, 0x00007C9CU, 0x00007CA0U,
+ 0x00007CC0U, 0x00007CC4U, 0x00007CC8U, 0x00007CCCU,
+ 0x00007CD0U, 0x00007CD4U, 0x00007CD8U, 0x00007CDCU,
+};
+
+int hw_atl2_utils_hw_get_regs(struct aq_hw_s *self,
+ const struct aq_hw_caps_s *aq_hw_caps,
+ u32 *regs_buff)
+{
+ unsigned int i;
+
+ for (i = 0; i < aq_hw_caps->mac_regs_count; i++)
+ regs_buff[i] = aq_hw_read_reg(self,
+ hw_atl2_utils_hw_mac_regs[i]);
+ return 0;
+}
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h
index 6bad64c77b87..c84955bc14ae 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils.h
@@ -626,10 +626,15 @@ int hw_atl2_utils_initfw(struct aq_hw_s *self, const struct aq_fw_ops **fw_ops);
int hw_atl2_utils_soft_reset(struct aq_hw_s *self);
+int hw_atl2_utils_hw_get_regs(struct aq_hw_s *self,
+ const struct aq_hw_caps_s *aq_hw_caps,
+ u32 *regs_buff);
+
u32 hw_atl2_utils_get_fw_version(struct aq_hw_s *self);
int hw_atl2_utils_get_action_resolve_table_caps(struct aq_hw_s *self,
u8 *base_index, u8 *count);
+int hw_atl2_utils_get_filter_caps(struct aq_hw_s *self);
extern const struct aq_fw_ops aq_a2_fw_ops;
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c
index 7370e3f76b62..546b48f897d3 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl2/hw_atl2_utils_fw.c
@@ -121,6 +121,10 @@ static int aq_a2_fw_init(struct aq_hw_s *self)
u32 val;
int err;
+ err = hw_atl2_utils_get_filter_caps(self);
+ if (err)
+ return err;
+
hw_atl2_shared_buffer_get(self, link_control, link_control);
link_control.mode = AQ_HOST_MODE_ACTIVE;
hw_atl2_shared_buffer_write(self, link_control, link_control);
@@ -606,6 +610,54 @@ u32 hw_atl2_utils_get_fw_version(struct aq_hw_s *self)
version.bundle.build;
}
+int hw_atl2_utils_get_filter_caps(struct aq_hw_s *self)
+{
+ struct hw_atl2_priv *priv = self->priv;
+ struct filter_caps_s filter_caps;
+ u32 tag_top;
+ int err;
+
+ err = hw_atl2_shared_buffer_read_safe(self, filter_caps, &filter_caps);
+ if (err)
+ return err;
+
+ priv->art_base_index = filter_caps.rslv_tbl_base_index * 8;
+ priv->art_count = filter_caps.rslv_tbl_count * 8;
+ if (priv->art_count == 0)
+ priv->art_count = 128;
+ priv->l2_filters_base_index = filter_caps.l2_filters_base_index;
+ priv->l2_filter_count = filter_caps.l2_filter_count;
+ priv->etype_filter_base_index = filter_caps.ethertype_filter_base_index;
+ priv->etype_filter_count = filter_caps.ethertype_filter_count;
+ priv->etype_filter_tag_top =
+ (priv->etype_filter_count >= HW_ATL2_RPF_ETYPE_TAGS) ?
+ (HW_ATL2_RPF_ETYPE_TAGS) : (HW_ATL2_RPF_ETYPE_TAGS >> 1);
+ priv->vlan_filter_base_index = filter_caps.vlan_filter_base_index;
+ /* 0 - no tag, 1 - reserved for vlan-filter-offload filters */
+ tag_top =
+ (filter_caps.vlan_filter_count == HW_ATL2_RPF_VLAN_FILTERS) ?
+ (HW_ATL2_RPF_VLAN_FILTERS - 2) :
+ (HW_ATL2_RPF_VLAN_FILTERS / 2 - 2);
+
+ if (filter_caps.vlan_filter_count > 2)
+ priv->vlan_filter_count = min_t(u32,
+ filter_caps.vlan_filter_count - 2,
+ tag_top);
+ else
+ priv->vlan_filter_count = 0;
+
+ priv->l3_v4_filter_base_index = filter_caps.l3_ip4_filter_base_index;
+ priv->l3_v4_filter_count = min_t(u32, filter_caps.l3_ip4_filter_count,
+ HW_ATL2_RPF_L3V4_FILTERS - 1);
+ priv->l3_v6_filter_base_index = filter_caps.l3_ip6_filter_base_index;
+ priv->l3_v6_filter_count = filter_caps.l3_ip6_filter_count;
+ priv->l4_filter_base_index = filter_caps.l4_filter_base_index;
+ priv->l4_filter_count = min_t(u32, filter_caps.l4_filter_count,
+ HW_ATL2_RPF_L4_FILTERS - 1);
+
+ return 0;
+}
+
int hw_atl2_utils_get_action_resolve_table_caps(struct aq_hw_s *self,
u8 *base_index, u8 *count)
{
--
2.43.0