sfc: separate out SFC4000 ("Falcon") support into new sfc-falcon driver

Rationale: The differences between Falcon and Siena are in many ways larger
 than those between Siena and EF10 (despite Siena being nominally "Falcon-
 architecture"); for instance, Falcon has no MCPU, so there is no MCDI.
 Removing Falcon support from the sfc driver should simplify the latter,
 and avoid the possibility of Falcon support being broken by changes to sfc
 (which are rarely if ever tested on Falcon, it being end-of-lifed hardware).

The sfc-falcon driver created in this changeset is essentially a copy of the
 sfc driver, but with Siena- and EF10-specific code, including MCDI, removed
 and with the "efx_" identifier prefix changed to "ef4_" (for "EFX 4000-
 series") to avoid collisions when both drivers are built-in.

This changeset removes Falcon from the sfc driver's PCI ID table; then in
 sfc I've removed obvious Falcon-related code: I removed the Falcon NIC
 functions, Falcon PHY code, and EFX_REV_FALCON_*, then fixed up everything
 that referenced them.

Also, increment minor version of both drivers (to 4.1).

For now, CONFIG_SFC selects CONFIG_SFC_FALCON, so that updating old configs
 doesn't cause Falcon support to disappear; but that should be undone at
 some point in the future.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 12 deletions

diff --git a/drivers/net/ethernet/sfc/ethtool.c b/drivers/net/ethernet/sfc/ethtool.c
index 740cdf08fa19..ca29d3d255a8 100644
--- a/drivers/net/ethernet/sfc/ethtool.c
+++ b/drivers/net/ethernet/sfc/ethtool.c
@@ -169,9 +169,8 @@ static void efx_ethtool_get_drvinfo(struct net_device *net_dev,
 
 	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
 	strlcpy(info->version, EFX_DRIVER_VERSION, sizeof(info->version));
-	if (efx_nic_rev(efx) >= EFX_REV_SIENA_A0)
-		efx_mcdi_print_fwver(efx, info->fw_version,
-				     sizeof(info->fw_version));
+	efx_mcdi_print_fwver(efx, info->fw_version,
+			     sizeof(info->fw_version));
 	strlcpy(info->bus_info, pci_name(efx->pci_dev), sizeof(info->bus_info));
 }
 
@@ -966,8 +965,6 @@ efx_ethtool_get_rxnfc(struct net_device *net_dev,
 		return 0;
 
 	case ETHTOOL_GRXFH: {
-		unsigned min_revision = 0;
-
 		info->data = 0;
 		switch (info->flow_type) {
 		case UDP_V4_FLOW:
@@ -980,7 +977,6 @@ efx_ethtool_get_rxnfc(struct net_device *net_dev,
 		case AH_ESP_V4_FLOW:
 		case IPV4_FLOW:
 			info->data |= RXH_IP_SRC | RXH_IP_DST;
-			min_revision = EFX_REV_FALCON_B0;
 			break;
 		case UDP_V6_FLOW:
 			if (efx->rx_hash_udp_4tuple)
@@ -992,13 +988,10 @@ efx_ethtool_get_rxnfc(struct net_device *net_dev,
 		case AH_ESP_V6_FLOW:
 		case IPV6_FLOW:
 			info->data |= RXH_IP_SRC | RXH_IP_DST;
-			min_revision = EFX_REV_SIENA_A0;
 			break;
 		default:
 			break;
 		}
-		if (efx_nic_rev(efx) < min_revision)
-			info->data = 0;
 		return 0;
 	}
 
@@ -1271,9 +1264,7 @@ static u32 efx_ethtool_get_rxfh_indir_size(struct net_device *net_dev)
 {
 	struct efx_nic *efx = netdev_priv(net_dev);
 
-	return ((efx_nic_rev(efx) < EFX_REV_FALCON_B0 ||
-		 efx->n_rx_channels == 1) ?
-		0 : ARRAY_SIZE(efx->rx_indir_table));
+	return (efx->n_rx_channels == 1) ? 0 : ARRAY_SIZE(efx->rx_indir_table);
 }
 
 static int efx_ethtool_get_rxfh(struct net_device *net_dev, u32 *indir, u8 *key,