sfc: Add support for Solarflare SFC9100 family

This adds support for the EF10 network controller architecture and the
SFC9100 family, starting with SFC9120 'Farmingdale', and bumps the
driver version to 4.0.

New features in the SFC9100 family include:

- Flexible allocation of internal resources to PCIe physical and virtual
  functions under firmware control
- RX event merging to reduce DMA writes at high packet rates
- Integrated RX timestamping
- PIO buffers for lower TX latency
- Firmware-driven data path that supports additional offload features
  and filter types
- Delivery of packets between functions and to multiple recipients,
  allowing firmware to implement a vswitch
- Multiple RX flow hash (RSS) contexts with their own hash keys and
  indirection tables
- 40G MAC (single port only)

...not all of which are enabled in this initial driver or the initial
firmware release.

Much of the new code is by Jon Cooper.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 31 insertions, 3 deletions

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 34788fbb4c66..5b66c5ecf6a1 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -2075,7 +2075,7 @@ static int efx_set_features(struct net_device *net_dev, netdev_features_t data)
         return 0;
 }
 
-static const struct net_device_ops efx_netdev_ops = {
+static const struct net_device_ops efx_farch_netdev_ops = {
         .ndo_open               = efx_net_open,
         .ndo_stop               = efx_net_stop,
         .ndo_get_stats64        = efx_net_stats,
@@ -2102,6 +2102,26 @@ static const struct net_device_ops efx_netdev_ops = {
 #endif
 };
 
+static const struct net_device_ops efx_ef10_netdev_ops = {
+        .ndo_open               = efx_net_open,
+        .ndo_stop               = efx_net_stop,
+        .ndo_get_stats64        = efx_net_stats,
+        .ndo_tx_timeout         = efx_watchdog,
+        .ndo_start_xmit         = efx_hard_start_xmit,
+        .ndo_validate_addr      = eth_validate_addr,
+        .ndo_do_ioctl           = efx_ioctl,
+        .ndo_change_mtu         = efx_change_mtu,
+        .ndo_set_mac_address    = efx_set_mac_address,
+        .ndo_set_rx_mode        = efx_set_rx_mode,
+        .ndo_set_features       = efx_set_features,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+        .ndo_poll_controller    = efx_netpoll,
+#endif
+#ifdef CONFIG_RFS_ACCEL
+        .ndo_rx_flow_steer      = efx_filter_rfs,
+#endif
+};
+
 static void efx_update_name(struct efx_nic *efx)
 {
         strcpy(efx->name, efx->net_dev->name);
@@ -2114,7 +2134,8 @@ static int efx_netdev_event(struct notifier_block *this,
 {
         struct net_device *net_dev = netdev_notifier_info_to_dev(ptr);
 
-        if (net_dev->netdev_ops == &efx_netdev_ops &&
+        if ((net_dev->netdev_ops == &efx_farch_netdev_ops ||
+             net_dev->netdev_ops == &efx_ef10_netdev_ops) &&
             event == NETDEV_CHANGENAME)
                 efx_update_name(netdev_priv(net_dev));
 
@@ -2141,7 +2162,12 @@ static int efx_register_netdev(struct efx_nic *efx)
 
         net_dev->watchdog_timeo = 5 * HZ;
         net_dev->irq = efx->pci_dev->irq;
-        net_dev->netdev_ops = &efx_netdev_ops;
+        if (efx_nic_rev(efx) >= EFX_REV_HUNT_A0) {
+                net_dev->netdev_ops = &efx_ef10_netdev_ops;
+                net_dev->priv_flags |= IFF_UNICAST_FLT;
+        } else {
+                net_dev->netdev_ops = &efx_farch_netdev_ops;
+        }
         SET_ETHTOOL_OPS(net_dev, &efx_ethtool_ops);
         net_dev->gso_max_segs = EFX_TSO_MAX_SEGS;
 
@@ -2463,6 +2489,8 @@ static DEFINE_PCI_DEVICE_TABLE(efx_pci_table) = {
          .driver_data = (unsigned long) &siena_a0_nic_type},
         {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0813),  /* SFL9021 */
          .driver_data = (unsigned long) &siena_a0_nic_type},
+        {PCI_DEVICE(PCI_VENDOR_ID_SOLARFLARE, 0x0903),  /* SFC9120 PF */
+         .driver_data = (unsigned long) &efx_hunt_a0_nic_type},
         {0}                     /* end of list */
 };