sfc: make firmware-variant printing a nic_type function

Instead of having efx_mcdi_print_fwver() look at efx_nic_rev and
 conditionally poke around inside ef10-specific nic_data, add a new
 efx->type->print_additional_fwver() method to do this work.
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/sfc/ef10.c

@@ -3978,6 +3978,19 @@ static int efx_ef10_udp_tnl_del_port(struct efx_nic *efx,
 	return rc;
 }
 
+/* EF10 may have multiple datapath firmware variants within a
+ * single version.  Report which variants are running.
+ */
+static size_t efx_ef10_print_additional_fwver(struct efx_nic *efx, char *buf,
+					      size_t len)
+{
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+	return scnprintf(buf, len, " rx%x tx%x",
+			 nic_data->rx_dpcpu_fw_id,
+			 nic_data->tx_dpcpu_fw_id);
+}
+
 static unsigned int ef10_check_caps(const struct efx_nic *efx,
 				    u8 flag,
 				    u32 offset)
@@ -4107,6 +4120,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
 	.check_caps = ef10_check_caps,
+	.print_additional_fwver = efx_ef10_print_additional_fwver,
 };
 
 const struct efx_nic_type efx_hunt_a0_nic_type = {
@@ -4243,4 +4257,5 @@ const struct efx_nic_type efx_hunt_a0_nic_type = {
 			    1 << HWTSTAMP_FILTER_ALL,
 	.rx_hash_key_size = 40,
 	.check_caps = ef10_check_caps,
+	.print_additional_fwver = efx_ef10_print_additional_fwver,
 };

drivers/net/ethernet/sfc/mcdi.c

@@ -1425,15 +1425,9 @@ void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
 			   le16_to_cpu(ver_words[2]),
 			   le16_to_cpu(ver_words[3]));
 
-	/* EF10 may have multiple datapath firmware variants within a
-	 * single version.  Report which variants are running.
-	 */
-	if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
-		struct efx_ef10_nic_data *nic_data = efx->nic_data;
-
-		offset += scnprintf(buf + offset, len - offset, " rx%x tx%x",
-				    nic_data->rx_dpcpu_fw_id,
-				    nic_data->tx_dpcpu_fw_id);
+	if (efx->type->print_additional_fwver)
+		offset += efx->type->print_additional_fwver(efx, buf + offset,
+							    len - offset);
 
 	/* It's theoretically possible for the string to exceed 31
 	 * characters, though in practice the first three version
@@ -1441,7 +1435,6 @@ void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
 	 */
 	if (WARN_ON(offset >= len))
 		buf[0] = 0;
-	}
 
 	return;
 

drivers/net/ethernet/sfc/net_driver.h

@@ -1296,6 +1296,7 @@ struct efx_udp_tunnel {
  * @udp_tnl_add_port: Add a UDP tunnel port
  * @udp_tnl_has_port: Check if a port has been added as UDP tunnel
  * @udp_tnl_del_port: Remove a UDP tunnel port
+ * @print_additional_fwver: Dump NIC-specific additional FW version info
  * @revision: Hardware architecture revision
  * @txd_ptr_tbl_base: TX descriptor ring base address
  * @rxd_ptr_tbl_base: RX descriptor ring base address
@@ -1469,6 +1470,8 @@ struct efx_nic_type {
 	int (*udp_tnl_add_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl);
 	bool (*udp_tnl_has_port)(struct efx_nic *efx, __be16 port);
 	int (*udp_tnl_del_port)(struct efx_nic *efx, struct efx_udp_tunnel tnl);
+	size_t (*print_additional_fwver)(struct efx_nic *efx, char *buf,
+					 size_t len);
 
 	int revision;
 	unsigned int txd_ptr_tbl_base;