Commit 620d7b91 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Paolo Abeni
Browse files

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



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: default avatarSimon Horman <horms@kernel.org>
Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251017-an7583-eth-support-v3-9-f28319666667@kernel.org


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 306b78f5

drivers/net/ethernet/airoha/airoha_ppe.c

+14 −10
Original line number Diff line number Diff line
@@ -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;