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net: airoha: ppe: Flush PPE SRAM table during PPE setup

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Rely on airoha_ppe_foe_commit_sram_entry routine to flush SRAM PPE table
entries. This patch allow moving PPE SRAM flush during PPE setup and
avoid dumping uninitialized values via the debugfs if no entries are
offloaded yet.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251017-an7583-eth-support-v3-9-f28319666667@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Lorenzo Bianconi
2025-10-17 11:06:18 +02:00
committed by Paolo Abeni
parent 306b78f503
commit 620d7b91aa
1 changed files with 14 additions and 10 deletions
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24
drivers/net/ethernet/airoha/airoha_ppe.c
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@@ -1291,18 +1291,22 @@ static int airoha_ppe_flow_offload_cmd(struct airoha_eth *eth,
return -EOPNOTSUPP;
}
static int airoha_ppe_flush_sram_entries(struct airoha_ppe *ppe,
struct airoha_npu *npu)
static int airoha_ppe_flush_sram_entries(struct airoha_ppe *ppe)
{
u32 sram_num_entries = airoha_ppe_get_total_sram_num_entries(ppe);
struct airoha_foe_entry *hwe = ppe->foe;
int i;
int i, err = 0;
for (i = 0; i < sram_num_entries; i++) {
int err;
for (i = 0; i < PPE_SRAM_NUM_ENTRIES; i++)
memset(&hwe[i], 0, sizeof(*hwe));
err = airoha_ppe_foe_commit_sram_entry(ppe, i);
if (err)
break;
}
return npu->ops.ppe_flush_sram_entries(npu, ppe->foe_dma,
sram_num_entries);
return err;
}
static struct airoha_npu *airoha_ppe_npu_get(struct airoha_eth *eth)
@@ -1339,10 +1343,6 @@ static int airoha_ppe_offload_setup(struct airoha_eth *eth)
}
airoha_ppe_hw_init(ppe);
err = airoha_ppe_flush_sram_entries(ppe, npu);
if (err)
goto error_npu_put;
airoha_ppe_foe_flow_stats_reset(ppe, npu);
rcu_assign_pointer(eth->npu, npu);
@@ -1513,6 +1513,10 @@ int airoha_ppe_init(struct airoha_eth *eth)
if (!ppe->foe_check_time)
return -ENOMEM;
err = airoha_ppe_flush_sram_entries(ppe);
if (err)
return err;
err = rhashtable_init(&eth->flow_table, &airoha_flow_table_params);
if (err)
return err;