Commit 306b78f5 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Paolo Abeni
Browse files

net: airoha: ppe: Configure SRAM PPE entries via the cpu 



Introduce airoha_ppe_foe_commit_sram_entry routine in order to configure
the SRAM PPE entries directly via the CPU instead of using the NPU APIs.
This is a preliminary patch to enable netfilter flowtable hw offload for
AN7583 SoC.

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-v3-8-f28319666667@kernel.org


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 41139125

drivers/net/ethernet/airoha/airoha_ppe.c

+23 −7
Original line number Diff line number Diff line
@@ -656,6 +656,27 @@ static bool airoha_ppe_foe_compare_entry(struct airoha_flow_table_entry *e, 
	return !memcmp(&e->data.d, &hwe->d, len - sizeof(hwe->ib1));

}



static int airoha_ppe_foe_commit_sram_entry(struct airoha_ppe *ppe, u32 hash)

{

	struct airoha_foe_entry *hwe = ppe->foe + hash * sizeof(*hwe);

	bool ppe2 = hash >= PPE_SRAM_NUM_ENTRIES;

	u32 *ptr = (u32 *)hwe, val;

	int i;



	for (i = 0; i < sizeof(*hwe) / sizeof(*ptr); i++)

		airoha_fe_wr(ppe->eth, REG_PPE_RAM_ENTRY(ppe2, i), ptr[i]);



	wmb();

	airoha_fe_wr(ppe->eth, REG_PPE_RAM_CTRL(ppe2),

		     FIELD_PREP(PPE_SRAM_CTRL_ENTRY_MASK, hash) |

		     PPE_SRAM_CTRL_WR_MASK | PPE_SRAM_CTRL_REQ_MASK);



	return read_poll_timeout_atomic(airoha_fe_rr, val,

					val & PPE_SRAM_CTRL_ACK_MASK,

					10, 100, false, ppe->eth,

					REG_PPE_RAM_CTRL(ppe2));

}



static int airoha_ppe_foe_commit_entry(struct airoha_ppe *ppe,

				       struct airoha_foe_entry *e,

				       u32 hash, bool rx_wlan)
@@ -685,13 +706,8 @@ static int airoha_ppe_foe_commit_entry(struct airoha_ppe *ppe, 
	if (!rx_wlan)

		airoha_ppe_foe_flow_stats_update(ppe, npu, hwe, hash);



	if (hash < sram_num_entries) {

		dma_addr_t addr = ppe->foe_dma + hash * sizeof(*hwe);

		bool ppe2 = hash >= PPE_SRAM_NUM_ENTRIES;



		err = npu->ops.ppe_foe_commit_entry(npu, addr, sizeof(*hwe),

						    hash, ppe2);

	}

	if (hash < sram_num_entries)

		err = airoha_ppe_foe_commit_sram_entry(ppe, hash);

unlock:

	rcu_read_unlock();