Commit c84ddc11 authored by Alex Elder's avatar Alex Elder Committed by Jakub Kicinski
Browse files

net: ipa: extend endpoints in packet init command 



The IP_PACKET_INIT immediate command defines the destination
endpoint to which a packet should be sent.  Prior to IPA v5.0, a
5 bit field in that command represents the endpoint, but starting
with IPA v5.0, the field is extended to 8 bits to support more than
32 endpoints.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Reviewed-by: default avatarLeon Romanovsky <leonro@nvidia.com>
Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 07abde54

drivers/net/ipa/ipa_cmd.c

+9 −4
Original line number Diff line number Diff line
@@ -94,11 +94,11 @@ struct ipa_cmd_register_write { 
/* IPA_CMD_IP_PACKET_INIT */



struct ipa_cmd_ip_packet_init {

	u8 dest_endpoint;

	u8 dest_endpoint;	/* Full 8 bits used for IPA v5.0+ */

	u8 reserved[7];

};



/* Field masks for ipa_cmd_ip_packet_init dest_endpoint field */

/* Field mask for ipa_cmd_ip_packet_init dest_endpoint field (unused v5.0+) */

#define IPA_PACKET_INIT_DEST_ENDPOINT_FMASK		GENMASK(4, 0)



/* IPA_CMD_DMA_SHARED_MEM */
@@ -491,8 +491,13 @@ static void ipa_cmd_ip_packet_init_add(struct gsi_trans *trans, u8 endpoint_id) 
	cmd_payload = ipa_cmd_payload_alloc(ipa, &payload_addr);

	payload = &cmd_payload->ip_packet_init;



	payload->dest_endpoint = u8_encode_bits(endpoint_id,

	if (ipa->version < IPA_VERSION_5_0) {

		payload->dest_endpoint =

			u8_encode_bits(endpoint_id,

				       IPA_PACKET_INIT_DEST_ENDPOINT_FMASK);

	} else {

		payload->dest_endpoint = endpoint_id;

	}



	gsi_trans_cmd_add(trans, payload, sizeof(*payload), payload_addr,

			  opcode);