Merge branch 'aquantia-various-ethtool-ops-implementation'

Igor Russkikh says:

====================
net: aquantia: various ethtool ops implementation

In this patchset Anton Mikaev and I added some useful ethtool operations:
- ring size changes
- link renegotioation
- flow control management

The patch also improves init/deinit sequence.

V3 changes:
- After review and analysis it is clear that rtnl lock (which is
  captured by default on ethtool ops) is enough to secure possible
  overlapping of dev open/close. Thus, just dropping internal mutex.

V2 changes:
- using mutex to secure simultaneous dev close/open
- using state var to store/restore dev state
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c

@@ -11,6 +11,7 @@
 
 #include "aq_ethtool.h"
 #include "aq_nic.h"
+#include "aq_vec.h"
 
 static void aq_ethtool_get_regs(struct net_device *ndev,
 				struct ethtool_regs *regs, void *p)
@@ -284,6 +285,117 @@ static int aq_ethtool_set_coalesce(struct net_device *ndev,
 	return aq_nic_update_interrupt_moderation_settings(aq_nic);
 }
 
+static int aq_ethtool_nway_reset(struct net_device *ndev)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+	if (unlikely(!aq_nic->aq_fw_ops->renegotiate))
+		return -EOPNOTSUPP;
+
+	if (netif_running(ndev))
+		return aq_nic->aq_fw_ops->renegotiate(aq_nic->aq_hw);
+
+	return 0;
+}
+
+static void aq_ethtool_get_pauseparam(struct net_device *ndev,
+				      struct ethtool_pauseparam *pause)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+
+	pause->autoneg = 0;
+
+	if (aq_nic->aq_hw->aq_nic_cfg->flow_control & AQ_NIC_FC_RX)
+		pause->rx_pause = 1;
+	if (aq_nic->aq_hw->aq_nic_cfg->flow_control & AQ_NIC_FC_TX)
+		pause->tx_pause = 1;
+}
+
+static int aq_ethtool_set_pauseparam(struct net_device *ndev,
+				     struct ethtool_pauseparam *pause)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	int err = 0;
+
+	if (!aq_nic->aq_fw_ops->set_flow_control)
+		return -EOPNOTSUPP;
+
+	if (pause->autoneg == AUTONEG_ENABLE)
+		return -EOPNOTSUPP;
+
+	if (pause->rx_pause)
+		aq_nic->aq_hw->aq_nic_cfg->flow_control |= AQ_NIC_FC_RX;
+	else
+		aq_nic->aq_hw->aq_nic_cfg->flow_control &= ~AQ_NIC_FC_RX;
+
+	if (pause->tx_pause)
+		aq_nic->aq_hw->aq_nic_cfg->flow_control |= AQ_NIC_FC_TX;
+	else
+		aq_nic->aq_hw->aq_nic_cfg->flow_control &= ~AQ_NIC_FC_TX;
+
+	err = aq_nic->aq_fw_ops->set_flow_control(aq_nic->aq_hw);
+
+	return err;
+}
+
+static void aq_get_ringparam(struct net_device *ndev,
+			     struct ethtool_ringparam *ring)
+{
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *aq_nic_cfg = aq_nic_get_cfg(aq_nic);
+
+	ring->rx_pending = aq_nic_cfg->rxds;
+	ring->tx_pending = aq_nic_cfg->txds;
+
+	ring->rx_max_pending = aq_nic_cfg->aq_hw_caps->rxds_max;
+	ring->tx_max_pending = aq_nic_cfg->aq_hw_caps->txds_max;
+}
+
+static int aq_set_ringparam(struct net_device *ndev,
+			    struct ethtool_ringparam *ring)
+{
+	int err = 0;
+	bool ndev_running = false;
+	struct aq_nic_s *aq_nic = netdev_priv(ndev);
+	struct aq_nic_cfg_s *aq_nic_cfg = aq_nic_get_cfg(aq_nic);
+	const struct aq_hw_caps_s *hw_caps = aq_nic_cfg->aq_hw_caps;
+
+	if (ring->rx_mini_pending || ring->rx_jumbo_pending) {
+		err = -EOPNOTSUPP;
+		goto err_exit;
+	}
+
+	if (netif_running(ndev)) {
+		ndev_running = true;
+		dev_close(ndev);
+	}
+
+	aq_nic_free_vectors(aq_nic);
+
+	aq_nic_cfg->rxds = max(ring->rx_pending, hw_caps->rxds_min);
+	aq_nic_cfg->rxds = min(aq_nic_cfg->rxds, hw_caps->rxds_max);
+	aq_nic_cfg->rxds = ALIGN(aq_nic_cfg->rxds, AQ_HW_RXD_MULTIPLE);
+
+	aq_nic_cfg->txds = max(ring->tx_pending, hw_caps->txds_min);
+	aq_nic_cfg->txds = min(aq_nic_cfg->txds, hw_caps->txds_max);
+	aq_nic_cfg->txds = ALIGN(aq_nic_cfg->txds, AQ_HW_TXD_MULTIPLE);
+
+	for (aq_nic->aq_vecs = 0; aq_nic->aq_vecs < aq_nic_cfg->vecs;
+	     aq_nic->aq_vecs++) {
+		aq_nic->aq_vec[aq_nic->aq_vecs] =
+		    aq_vec_alloc(aq_nic, aq_nic->aq_vecs, aq_nic_cfg);
+		if (unlikely(!aq_nic->aq_vec[aq_nic->aq_vecs])) {
+			err = -ENOMEM;
+			goto err_exit;
+		}
+	}
+	if (ndev_running)
+		err = dev_open(ndev);
+
+err_exit:
+	return err;
+}
+
 const struct ethtool_ops aq_ethtool_ops = {
 	.get_link            = aq_ethtool_get_link,
 	.get_regs_len        = aq_ethtool_get_regs_len,
@@ -291,6 +403,11 @@ const struct ethtool_ops aq_ethtool_ops = {
 	.get_drvinfo         = aq_ethtool_get_drvinfo,
 	.get_strings         = aq_ethtool_get_strings,
 	.get_rxfh_indir_size = aq_ethtool_get_rss_indir_size,
+	.nway_reset          = aq_ethtool_nway_reset,
+	.get_ringparam       = aq_get_ringparam,
+	.set_ringparam       = aq_set_ringparam,
+	.get_pauseparam      = aq_ethtool_get_pauseparam,
+	.set_pauseparam      = aq_ethtool_set_pauseparam,
 	.get_rxfh_key_size   = aq_ethtool_get_rss_key_size,
 	.get_rxfh            = aq_ethtool_get_rss,
 	.get_rxnfc           = aq_ethtool_get_rxnfc,

drivers/net/ethernet/aquantia/atlantic/aq_hw.h

@@ -24,8 +24,10 @@ struct aq_hw_caps_s {
 	u64 link_speed_msk;
 	unsigned int hw_priv_flags;
 	u32 media_type;
-	u32 rxds;
-	u32 txds;
+	u32 rxds_max;
+	u32 txds_max;
+	u32 rxds_min;
+	u32 txds_min;
 	u32 txhwb_alignment;
 	u32 irq_mask;
 	u32 vecs;
@@ -98,6 +100,9 @@ struct aq_stats_s {
 #define AQ_HW_MEDIA_TYPE_TP    1U
 #define AQ_HW_MEDIA_TYPE_FIBRE 2U
 
+#define AQ_HW_TXD_MULTIPLE 8U
+#define AQ_HW_RXD_MULTIPLE 8U
+
 struct aq_hw_s {
 	atomic_t flags;
 	u8 rbl_enabled:1;
@@ -197,25 +202,30 @@ struct aq_hw_ops {
 
 	int (*hw_get_fw_version)(struct aq_hw_s *self, u32 *fw_version);
 
-	int (*hw_deinit)(struct aq_hw_s *self);
-
 	int (*hw_set_power)(struct aq_hw_s *self, unsigned int power_state);
 };
 
 struct aq_fw_ops {
 	int (*init)(struct aq_hw_s *self);
 
+	int (*deinit)(struct aq_hw_s *self);
+
 	int (*reset)(struct aq_hw_s *self);
 
+	int (*renegotiate)(struct aq_hw_s *self);
+
 	int (*get_mac_permanent)(struct aq_hw_s *self, u8 *mac);
 
 	int (*set_link_speed)(struct aq_hw_s *self, u32 speed);
 
-	int (*set_state)(struct aq_hw_s *self, enum hal_atl_utils_fw_state_e state);
+	int (*set_state)(struct aq_hw_s *self,
+			 enum hal_atl_utils_fw_state_e state);
 
 	int (*update_link_status)(struct aq_hw_s *self);
 
 	int (*update_stats)(struct aq_hw_s *self);
+
+	int (*set_flow_control)(struct aq_hw_s *self);
 };
 
 #endif /* AQ_HW_H */

drivers/net/ethernet/aquantia/atlantic/aq_nic.c

@@ -89,8 +89,8 @@ void aq_nic_cfg_start(struct aq_nic_s *self)
 	aq_nic_rss_init(self, cfg->num_rss_queues);
 
 	/*descriptors */
-	cfg->rxds = min(cfg->aq_hw_caps->rxds, AQ_CFG_RXDS_DEF);
-	cfg->txds = min(cfg->aq_hw_caps->txds, AQ_CFG_TXDS_DEF);
+	cfg->rxds = min(cfg->aq_hw_caps->rxds_max, AQ_CFG_RXDS_DEF);
+	cfg->txds = min(cfg->aq_hw_caps->txds_max, AQ_CFG_TXDS_DEF);
 
 	/*rss rings */
 	cfg->vecs = min(cfg->aq_hw_caps->vecs, AQ_CFG_VECS_DEF);
@@ -761,10 +761,14 @@ void aq_nic_get_link_ksettings(struct aq_nic_s *self,
 		ethtool_link_ksettings_add_link_mode(cmd, advertising,
 						     100baseT_Full);
 
-	if (self->aq_nic_cfg.flow_control)
+	if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_RX)
 		ethtool_link_ksettings_add_link_mode(cmd, advertising,
 						     Pause);
 
+	if (self->aq_nic_cfg.flow_control & AQ_NIC_FC_TX)
+		ethtool_link_ksettings_add_link_mode(cmd, advertising,
+						     Asym_Pause);
+
 	if (self->aq_nic_cfg.aq_hw_caps->media_type == AQ_HW_MEDIA_TYPE_FIBRE)
 		ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
 	else
@@ -879,7 +883,7 @@ void aq_nic_deinit(struct aq_nic_s *self)
 		aq_vec_deinit(aq_vec);
 
 	if (self->power_state == AQ_HW_POWER_STATE_D0) {
-		(void)self->aq_hw_ops->hw_deinit(self->aq_hw);
+		(void)self->aq_fw_ops->deinit(self->aq_hw);
 	} else {
 		(void)self->aq_hw_ops->hw_set_power(self->aq_hw,
 						   self->power_state);

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c

@@ -26,10 +26,12 @@
 	.tcs = HW_ATL_A0_TC_MAX,	  \
 	.rxd_alignment = 1U,		  \
 	.rxd_size = HW_ATL_A0_RXD_SIZE,   \
-	.rxds = 248U, \
+	.rxds_max = HW_ATL_A0_MAX_RXD,    \
+	.rxds_min = HW_ATL_A0_MIN_RXD,    \
 	.txd_alignment = 1U,		  \
 	.txd_size = HW_ATL_A0_TXD_SIZE,   \
-	.txds = 8U * 1024U, \
+	.txds_max = HW_ATL_A0_MAX_TXD,    \
+	.txds_min = HW_ATL_A0_MIN_RXD,    \
 	.txhwb_alignment = 4096U,	  \
 	.tx_rings = HW_ATL_A0_TX_RINGS,   \
 	.rx_rings = HW_ATL_A0_RX_RINGS,   \
@@ -875,7 +877,6 @@ static int hw_atl_a0_hw_ring_rx_stop(struct aq_hw_s *self,
 const struct aq_hw_ops hw_atl_ops_a0 = {
 	.hw_set_mac_address   = hw_atl_a0_hw_mac_addr_set,
 	.hw_init              = hw_atl_a0_hw_init,
-	.hw_deinit            = hw_atl_utils_hw_deinit,
 	.hw_set_power         = hw_atl_utils_hw_set_power,
 	.hw_reset             = hw_atl_a0_hw_reset,
 	.hw_start             = hw_atl_a0_hw_start,

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0_internal.h

@@ -88,4 +88,12 @@
 
 #define HW_ATL_A0_FW_VER_EXPECTED 0x01050006U
 
+#define HW_ATL_A0_MIN_RXD \
+	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_RXD_MULTIPLE))
+#define HW_ATL_A0_MIN_TXD \
+	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_TXD_MULTIPLE))
+
+#define HW_ATL_A0_MAX_RXD 8184U
+#define HW_ATL_A0_MAX_TXD 8184U
+
 #endif /* HW_ATL_A0_INTERNAL_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c

@@ -27,10 +27,12 @@
 	.tcs = HW_ATL_B0_TC_MAX,	  \
 	.rxd_alignment = 1U,		  \
 	.rxd_size = HW_ATL_B0_RXD_SIZE,   \
-	.rxds = 4U * 1024U,		\
+	.rxds_max = HW_ATL_B0_MAX_RXD,    \
+	.rxds_min = HW_ATL_B0_MIN_RXD,    \
 	.txd_alignment = 1U,		  \
 	.txd_size = HW_ATL_B0_TXD_SIZE,   \
-	.txds = 8U * 1024U,		\
+	.txds_max = HW_ATL_B0_MAX_TXD,    \
+	.txds_min = HW_ATL_B0_MIN_TXD,    \
 	.txhwb_alignment = 4096U,	  \
 	.tx_rings = HW_ATL_B0_TX_RINGS,   \
 	.rx_rings = HW_ATL_B0_RX_RINGS,   \
@@ -933,7 +935,6 @@ static int hw_atl_b0_hw_ring_rx_stop(struct aq_hw_s *self,
 const struct aq_hw_ops hw_atl_ops_b0 = {
 	.hw_set_mac_address   = hw_atl_b0_hw_mac_addr_set,
 	.hw_init              = hw_atl_b0_hw_init,
-	.hw_deinit            = hw_atl_utils_hw_deinit,
 	.hw_set_power         = hw_atl_utils_hw_set_power,
 	.hw_reset             = hw_atl_b0_hw_reset,
 	.hw_start             = hw_atl_b0_hw_start,

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0_internal.h

@@ -142,6 +142,14 @@
 #define HW_ATL_INTR_MODER_MAX  0x1FF
 #define HW_ATL_INTR_MODER_MIN  0xFF
 
+#define HW_ATL_B0_MIN_RXD \
+	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_RXD_MULTIPLE))
+#define HW_ATL_B0_MIN_TXD \
+	(ALIGN(AQ_CFG_SKB_FRAGS_MAX + 1U, AQ_HW_TXD_MULTIPLE))
+
+#define HW_ATL_B0_MAX_RXD 8184U
+#define HW_ATL_B0_MAX_TXD 8184U
+
 /* HW layer capabilities */
 
 #endif /* HW_ATL_B0_INTERNAL_H */

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c

@@ -32,8 +32,9 @@
 
 #define HW_ATL_MPI_STATE_MSK      0x00FFU
 #define HW_ATL_MPI_STATE_SHIFT    0U
-#define HW_ATL_MPI_SPEED_MSK    0xFFFF0000U
+#define HW_ATL_MPI_SPEED_MSK      0x00FF0000U
 #define HW_ATL_MPI_SPEED_SHIFT    16U
+#define HW_ATL_MPI_DIRTY_WAKE_MSK 0x02000000U
 
 #define HW_ATL_MPI_DAISY_CHAIN_STATUS	0x704
 #define HW_ATL_MPI_BOOT_EXIT_CODE	0x388
@@ -521,23 +522,24 @@ void hw_atl_utils_mpi_read_stats(struct aq_hw_s *self,
 err_exit:;
 }
 
-static int hw_atl_utils_mpi_set_speed(struct aq_hw_s *self, u32 speed)
+int hw_atl_utils_mpi_set_speed(struct aq_hw_s *self, u32 speed)
 {
 	u32 val = aq_hw_read_reg(self, HW_ATL_MPI_CONTROL_ADR);
 
-	val = (val & HW_ATL_MPI_STATE_MSK) | (speed << HW_ATL_MPI_SPEED_SHIFT);
+	val = val & ~HW_ATL_MPI_SPEED_MSK;
+	val |= speed << HW_ATL_MPI_SPEED_SHIFT;
 	aq_hw_write_reg(self, HW_ATL_MPI_CONTROL_ADR, val);
 
 	return 0;
 }
 
-void hw_atl_utils_mpi_set(struct aq_hw_s *self,
-			  enum hal_atl_utils_fw_state_e state,
-			  u32 speed)
+int hw_atl_utils_mpi_set_state(struct aq_hw_s *self,
+			       enum hal_atl_utils_fw_state_e state)
 {
 	int err = 0;
 	u32 transaction_id = 0;
 	struct hw_aq_atl_utils_mbox_header mbox;
+	u32 val = aq_hw_read_reg(self, HW_ATL_MPI_CONTROL_ADR);
 
 	if (state == MPI_RESET) {
 		hw_atl_utils_mpi_read_mbox(self, &mbox);
@@ -551,21 +553,21 @@ void hw_atl_utils_mpi_set(struct aq_hw_s *self,
 		if (err < 0)
 			goto err_exit;
 	}
+	/* On interface DEINIT we disable DW (raise bit)
+	 * Otherwise enable DW (clear bit)
+	 */
+	if (state == MPI_DEINIT || state == MPI_POWER)
+		val |= HW_ATL_MPI_DIRTY_WAKE_MSK;
+	else
+		val &= ~HW_ATL_MPI_DIRTY_WAKE_MSK;
 
-	aq_hw_write_reg(self, HW_ATL_MPI_CONTROL_ADR,
-			(speed << HW_ATL_MPI_SPEED_SHIFT) | state);
-
-err_exit:;
-}
-
-static int hw_atl_utils_mpi_set_state(struct aq_hw_s *self,
-				      enum hal_atl_utils_fw_state_e state)
-{
-	u32 val = aq_hw_read_reg(self, HW_ATL_MPI_CONTROL_ADR);
+	/* Set new state bits */
+	val = val & ~HW_ATL_MPI_STATE_MSK;
+	val |= state & HW_ATL_MPI_STATE_MSK;
 
-	val = state | (val & HW_ATL_MPI_SPEED_MSK);
 	aq_hw_write_reg(self, HW_ATL_MPI_CONTROL_ADR, val);
-	return 0;
+err_exit:
+	return err;
 }
 
 int hw_atl_utils_mpi_get_link_status(struct aq_hw_s *self)
@@ -721,16 +723,18 @@ void hw_atl_utils_hw_chip_features_init(struct aq_hw_s *self, u32 *p)
 	*p = chip_features;
 }
 
-int hw_atl_utils_hw_deinit(struct aq_hw_s *self)
+static int hw_atl_fw1x_deinit(struct aq_hw_s *self)
 {
-	hw_atl_utils_mpi_set(self, MPI_DEINIT, 0x0U);
+	hw_atl_utils_mpi_set_speed(self, 0);
+	hw_atl_utils_mpi_set_state(self, MPI_DEINIT);
 	return 0;
 }
 
 int hw_atl_utils_hw_set_power(struct aq_hw_s *self,
 			      unsigned int power_state)
 {
-	hw_atl_utils_mpi_set(self, MPI_POWER, 0x0U);
+	hw_atl_utils_mpi_set_speed(self, 0);
+	hw_atl_utils_mpi_set_state(self, MPI_POWER);
 	return 0;
 }
 
@@ -823,10 +827,12 @@ int hw_atl_utils_get_fw_version(struct aq_hw_s *self, u32 *fw_version)
 
 const struct aq_fw_ops aq_fw_1x_ops = {
 	.init = hw_atl_utils_mpi_create,
+	.deinit = hw_atl_fw1x_deinit,
 	.reset = NULL,
 	.get_mac_permanent = hw_atl_utils_get_mac_permanent,
 	.set_link_speed = hw_atl_utils_mpi_set_speed,
 	.set_state = hw_atl_utils_mpi_set_state,
 	.update_link_status = hw_atl_utils_mpi_get_link_status,
 	.update_stats = hw_atl_utils_update_stats,
+	.set_flow_control = NULL,
 };

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h

@@ -239,6 +239,41 @@ enum hw_atl_fw2x_caps_hi {
 	CAPS_HI_TRANSACTION_ID,
 };
 
+enum hw_atl_fw2x_ctrl {
+	CTRL_RESERVED1 = 0x00,
+	CTRL_RESERVED2,
+	CTRL_RESERVED3,
+	CTRL_PAUSE,
+	CTRL_ASYMMETRIC_PAUSE,
+	CTRL_RESERVED4,
+	CTRL_RESERVED5,
+	CTRL_RESERVED6,
+	CTRL_1GBASET_FD_EEE,
+	CTRL_2P5GBASET_FD_EEE,
+	CTRL_5GBASET_FD_EEE,
+	CTRL_10GBASET_FD_EEE,
+	CTRL_THERMAL_SHUTDOWN,
+	CTRL_PHY_LOGS,
+	CTRL_EEE_AUTO_DISABLE,
+	CTRL_PFC,
+	CTRL_WAKE_ON_LINK,
+	CTRL_CABLE_DIAG,
+	CTRL_TEMPERATURE,
+	CTRL_DOWNSHIFT,
+	CTRL_PTP_AVB,
+	CTRL_RESERVED7,
+	CTRL_LINK_DROP,
+	CTRL_SLEEP_PROXY,
+	CTRL_WOL,
+	CTRL_MAC_STOP,
+	CTRL_EXT_LOOPBACK,
+	CTRL_INT_LOOPBACK,
+	CTRL_RESERVED8,
+	CTRL_WOL_TIMER,
+	CTRL_STATISTICS,
+	CTRL_FORCE_RECONNECT,
+};
+
 struct aq_hw_s;
 struct aq_fw_ops;
 struct aq_hw_caps_s;

drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils_fw2x.c

@@ -28,6 +28,10 @@
 #define HW_ATL_FW2X_MPI_STATE_ADDR	0x370
 #define HW_ATL_FW2X_MPI_STATE2_ADDR	0x374
 
+static int aq_fw2x_set_link_speed(struct aq_hw_s *self, u32 speed);
+static int aq_fw2x_set_state(struct aq_hw_s *self,
+			     enum hal_atl_utils_fw_state_e state);
+
 static int aq_fw2x_init(struct aq_hw_s *self)
 {
 	int err = 0;
@@ -39,6 +43,16 @@ static int aq_fw2x_init(struct aq_hw_s *self)
 	return err;
 }
 
+static int aq_fw2x_deinit(struct aq_hw_s *self)
+{
+	int err = aq_fw2x_set_link_speed(self, 0);
+
+	if (!err)
+		err = aq_fw2x_set_state(self, MPI_DEINIT);
+
+	return err;
+}
+
 static enum hw_atl_fw2x_rate link_speed_mask_2fw2x_ratemask(u32 speed)
 {
 	enum hw_atl_fw2x_rate rate = 0;
@@ -73,10 +87,38 @@ static int aq_fw2x_set_link_speed(struct aq_hw_s *self, u32 speed)
 	return 0;
 }
 
+static void aq_fw2x_set_mpi_flow_control(struct aq_hw_s *self, u32 *mpi_state)
+{
+	if (self->aq_nic_cfg->flow_control & AQ_NIC_FC_RX)
+		*mpi_state |= BIT(CAPS_HI_PAUSE);
+	else
+		*mpi_state &= ~BIT(CAPS_HI_PAUSE);
+
+	if (self->aq_nic_cfg->flow_control & AQ_NIC_FC_TX)
+		*mpi_state |= BIT(CAPS_HI_ASYMMETRIC_PAUSE);
+	else
+		*mpi_state &= ~BIT(CAPS_HI_ASYMMETRIC_PAUSE);
+}
+
 static int aq_fw2x_set_state(struct aq_hw_s *self,
 			     enum hal_atl_utils_fw_state_e state)
 {
-	/* No explicit state in 2x fw */
+	u32 mpi_state = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+
+	switch (state) {
+	case MPI_INIT:
+		mpi_state &= ~BIT(CAPS_HI_LINK_DROP);
+		aq_fw2x_set_mpi_flow_control(self, &mpi_state);
+		break;
+	case MPI_DEINIT:
+		mpi_state |= BIT(CAPS_HI_LINK_DROP);
+		break;
+	case MPI_RESET:
+	case MPI_POWER:
+		/* No actions */
+		break;
+	}
+	aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_state);
 	return 0;
 }
 
@@ -173,12 +215,37 @@ static int aq_fw2x_update_stats(struct aq_hw_s *self)
 	return hw_atl_utils_update_stats(self);
 }
 
+static int aq_fw2x_renegotiate(struct aq_hw_s *self)
+{
+	u32 mpi_opts = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+
+	mpi_opts |= BIT(CTRL_FORCE_RECONNECT);
+
+	aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_opts);
+
+	return 0;
+}
+
+static int aq_fw2x_set_flow_control(struct aq_hw_s *self)
+{
+	u32 mpi_state = aq_hw_read_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR);
+
+	aq_fw2x_set_mpi_flow_control(self, &mpi_state);
+
+	aq_hw_write_reg(self, HW_ATL_FW2X_MPI_CONTROL2_ADDR, mpi_state);
+
+	return 0;
+}
+
 const struct aq_fw_ops aq_fw_2x_ops = {
 	.init = aq_fw2x_init,
+	.deinit = aq_fw2x_deinit,
 	.reset = NULL,
+	.renegotiate = aq_fw2x_renegotiate,
 	.get_mac_permanent = aq_fw2x_get_mac_permanent,
 	.set_link_speed = aq_fw2x_set_link_speed,
 	.set_state = aq_fw2x_set_state,
 	.update_link_status = aq_fw2x_update_link_status,
 	.update_stats = aq_fw2x_update_stats,
+	.set_flow_control   = aq_fw2x_set_flow_control,
 };

drivers/net/ethernet/aquantia/atlantic/ver.h

@@ -12,8 +12,8 @@
 
 #define NIC_MAJOR_DRIVER_VERSION           2
 #define NIC_MINOR_DRIVER_VERSION           0
-#define NIC_BUILD_DRIVER_VERSION           2
-#define NIC_REVISION_DRIVER_VERSION        1
+#define NIC_BUILD_DRIVER_VERSION           3
+#define NIC_REVISION_DRIVER_VERSION        0
 
 #define AQ_CFG_DRV_VERSION_SUFFIX "-kern"