net: marvell: prestera: Add ethtool interface support

The ethtool API provides support for the configuration of the following
features: speed and duplex, auto-negotiation, MDI-x, forward error
correction, port media type. The API also provides information about the
port status, hardware and software statistic. The following limitation
exists:

    - port media type should be configured before speed setting
    - ethtool -m option is not supported
    - ethtool -p option is not supported
    - ethtool -r option is supported for RJ45 port only
    - the following combination of parameters is not supported:

          ethtool -s sw1pX port XX autoneg on

    - forward error correction feature is supported only on SFP ports, 10G
      speed

    - auto-negotiation and MDI-x features are not supported on
      Copper-to-Fiber SFP module

Co-developed-by: Andrii Savka <andrii.savka@plvision.eu>
Signed-off-by: Andrii Savka <andrii.savka@plvision.eu>
Co-developed-by: Serhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu>
Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 299 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 9f1e222024ef..e501f8c7dc50 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
@@ -31,9 +31,18 @@ enum {
 	PRESTERA_CMD_PORT_ATTR_ADMIN_STATE = 1,
 	PRESTERA_CMD_PORT_ATTR_MTU = 3,
 	PRESTERA_CMD_PORT_ATTR_MAC = 4,
+	PRESTERA_CMD_PORT_ATTR_SPEED = 5,
 	PRESTERA_CMD_PORT_ATTR_CAPABILITY = 9,
+	PRESTERA_CMD_PORT_ATTR_REMOTE_CAPABILITY = 10,
+	PRESTERA_CMD_PORT_ATTR_REMOTE_FC = 11,
+	PRESTERA_CMD_PORT_ATTR_LINK_MODE = 12,
+	PRESTERA_CMD_PORT_ATTR_TYPE = 13,
+	PRESTERA_CMD_PORT_ATTR_FEC = 14,
 	PRESTERA_CMD_PORT_ATTR_AUTONEG = 15,
+	PRESTERA_CMD_PORT_ATTR_DUPLEX = 16,
 	PRESTERA_CMD_PORT_ATTR_STATS = 17,
+	PRESTERA_CMD_PORT_ATTR_MDIX = 18,
+	PRESTERA_CMD_PORT_ATTR_AUTONEG_RESTART = 19,
 };
 
 enum {
@@ -48,6 +57,13 @@ enum {
 };
 
 enum {
+	PRESTERA_PORT_TP_NA,
+	PRESTERA_PORT_TP_MDI,
+	PRESTERA_PORT_TP_MDIX,
+	PRESTERA_PORT_TP_AUTO,
+};
+
+enum {
 	PRESTERA_PORT_GOOD_OCTETS_RCV_CNT,
 	PRESTERA_PORT_BAD_OCTETS_RCV_CNT,
 	PRESTERA_PORT_MAC_TRANSMIT_ERR_CNT,
@@ -82,6 +98,13 @@ enum {
 	PRESTERA_PORT_CNT_MAX
 };
 
+enum {
+	PRESTERA_FC_NONE,
+	PRESTERA_FC_SYMMETRIC,
+	PRESTERA_FC_ASYMMETRIC,
+	PRESTERA_FC_SYMM_ASYMM,
+};
+
 struct prestera_fw_event_handler {
 	struct list_head list;
 	struct rcu_head rcu;
@@ -137,11 +160,23 @@ struct prestera_msg_port_cap_param {
 	u8  transceiver;
 };
 
+struct prestera_msg_port_mdix_param {
+	u8 status;
+	u8 admin_mode;
+};
+
 union prestera_msg_port_param {
 	u8  admin_state;
 	u8  oper_state;
 	u32 mtu;
 	u8  mac[ETH_ALEN];
+	u32 speed;
+	u32 link_mode;
+	u8  type;
+	u8  duplex;
+	u8  fec;
+	u8  fc;
+	struct prestera_msg_port_mdix_param mdix;
 	struct prestera_msg_port_autoneg_param autoneg;
 	struct prestera_msg_port_cap_param cap;
 };
@@ -483,6 +518,238 @@ int prestera_hw_port_cap_get(const struct prestera_port *port,
 	return err;
 }
 
+int prestera_hw_port_remote_cap_get(const struct prestera_port *port,
+				    u64 *link_mode_bitmap)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_REMOTE_CAPABILITY,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*link_mode_bitmap = resp.param.cap.link_mode;
+
+	return 0;
+}
+
+int prestera_hw_port_remote_fc_get(const struct prestera_port *port,
+				   bool *pause, bool *asym_pause)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_REMOTE_FC,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	switch (resp.param.fc) {
+	case PRESTERA_FC_SYMMETRIC:
+		*pause = true;
+		*asym_pause = false;
+		break;
+	case PRESTERA_FC_ASYMMETRIC:
+		*pause = false;
+		*asym_pause = true;
+		break;
+	case PRESTERA_FC_SYMM_ASYMM:
+		*pause = true;
+		*asym_pause = true;
+		break;
+	default:
+		*pause = false;
+		*asym_pause = false;
+	}
+
+	return 0;
+}
+
+int prestera_hw_port_type_get(const struct prestera_port *port, u8 *type)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_TYPE,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*type = resp.param.type;
+
+	return 0;
+}
+
+int prestera_hw_port_fec_get(const struct prestera_port *port, u8 *fec)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_FEC,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*fec = resp.param.fec;
+
+	return 0;
+}
+
+int prestera_hw_port_fec_set(const struct prestera_port *port, u8 fec)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_FEC,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+		.param = {
+			.fec = fec,
+		}
+	};
+
+	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
+			    &req.cmd, sizeof(req));
+}
+
+static u8 prestera_hw_mdix_to_eth(u8 mode)
+{
+	switch (mode) {
+	case PRESTERA_PORT_TP_MDI:
+		return ETH_TP_MDI;
+	case PRESTERA_PORT_TP_MDIX:
+		return ETH_TP_MDI_X;
+	case PRESTERA_PORT_TP_AUTO:
+		return ETH_TP_MDI_AUTO;
+	default:
+		return ETH_TP_MDI_INVALID;
+	}
+}
+
+static u8 prestera_hw_mdix_from_eth(u8 mode)
+{
+	switch (mode) {
+	case ETH_TP_MDI:
+		return PRESTERA_PORT_TP_MDI;
+	case ETH_TP_MDI_X:
+		return PRESTERA_PORT_TP_MDIX;
+	case ETH_TP_MDI_AUTO:
+		return PRESTERA_PORT_TP_AUTO;
+	default:
+		return PRESTERA_PORT_TP_NA;
+	}
+}
+
+int prestera_hw_port_mdix_get(const struct prestera_port *port, u8 *status,
+			      u8 *admin_mode)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_MDIX,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*status = prestera_hw_mdix_to_eth(resp.param.mdix.status);
+	*admin_mode = prestera_hw_mdix_to_eth(resp.param.mdix.admin_mode);
+
+	return 0;
+}
+
+int prestera_hw_port_mdix_set(const struct prestera_port *port, u8 mode)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_MDIX,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+
+	req.param.mdix.admin_mode = prestera_hw_mdix_from_eth(mode);
+
+	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
+			    &req.cmd, sizeof(req));
+}
+
+int prestera_hw_port_link_mode_set(const struct prestera_port *port, u32 mode)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_LINK_MODE,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+		.param = {
+			.link_mode = mode,
+		}
+	};
+
+	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
+			    &req.cmd, sizeof(req));
+}
+
+int prestera_hw_port_link_mode_get(const struct prestera_port *port, u32 *mode)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_LINK_MODE,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*mode = resp.param.link_mode;
+
+	return 0;
+}
+
+int prestera_hw_port_speed_get(const struct prestera_port *port, u32 *speed)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_SPEED,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*speed = resp.param.speed;
+
+	return 0;
+}
+
 int prestera_hw_port_autoneg_set(const struct prestera_port *port,
 				 bool autoneg, u64 link_modes, u8 fec)
 {
@@ -503,6 +770,38 @@ int prestera_hw_port_autoneg_set(const struct prestera_port *port,
 			    &req.cmd, sizeof(req));
 }
 
+int prestera_hw_port_autoneg_restart(struct prestera_port *port)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_AUTONEG_RESTART,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+
+	return prestera_cmd(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_SET,
+			    &req.cmd, sizeof(req));
+}
+
+int prestera_hw_port_duplex_get(const struct prestera_port *port, u8 *duplex)
+{
+	struct prestera_msg_port_attr_req req = {
+		.attr = PRESTERA_CMD_PORT_ATTR_DUPLEX,
+		.port = port->hw_id,
+		.dev = port->dev_id,
+	};
+	struct prestera_msg_port_attr_resp resp;
+	int err;
+
+	err = prestera_cmd_ret(port->sw, PRESTERA_CMD_TYPE_PORT_ATTR_GET,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*duplex = resp.param.duplex;
+
+	return 0;
+}
+
 int prestera_hw_port_stats_get(const struct prestera_port *port,
 			       struct prestera_port_stats *st)
 {