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// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#include <linux/phy.h>
#include <linux/phylink.h>
#include "fbnic.h"
#include "fbnic_mac.h"
#include "fbnic_netdev.h"
static struct fbnic_net *
fbnic_pcs_to_net(struct phylink_pcs *pcs)
{
return container_of(pcs, struct fbnic_net, phylink_pcs);
}
static void
fbnic_phylink_pcs_get_state(struct phylink_pcs *pcs,
struct phylink_link_state *state)
{
struct fbnic_net *fbn = fbnic_pcs_to_net(pcs);
struct fbnic_dev *fbd = fbn->fbd;
/* For now we use hard-coded defaults and FW config to determine
* the current values. In future patches we will add support for
* reconfiguring these values and changing link settings.
*/
switch (fbd->fw_cap.link_speed) {
case FBNIC_FW_LINK_SPEED_25R1:
state->speed = SPEED_25000;
break;
case FBNIC_FW_LINK_SPEED_50R2:
state->speed = SPEED_50000;
break;
case FBNIC_FW_LINK_SPEED_100R2:
state->speed = SPEED_100000;
break;
default:
state->speed = SPEED_UNKNOWN;
break;
}
state->duplex = DUPLEX_FULL;
state->link = fbd->mac->pcs_get_link(fbd);
}
static int
fbnic_phylink_pcs_enable(struct phylink_pcs *pcs)
{
struct fbnic_net *fbn = fbnic_pcs_to_net(pcs);
struct fbnic_dev *fbd = fbn->fbd;
return fbd->mac->pcs_enable(fbd);
}
static void
fbnic_phylink_pcs_disable(struct phylink_pcs *pcs)
{
struct fbnic_net *fbn = fbnic_pcs_to_net(pcs);
struct fbnic_dev *fbd = fbn->fbd;
return fbd->mac->pcs_disable(fbd);
}
static int
fbnic_phylink_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
phy_interface_t interface,
const unsigned long *advertising,
bool permit_pause_to_mac)
{
return 0;
}
static const struct phylink_pcs_ops fbnic_phylink_pcs_ops = {
.pcs_config = fbnic_phylink_pcs_config,
.pcs_enable = fbnic_phylink_pcs_enable,
.pcs_disable = fbnic_phylink_pcs_disable,
.pcs_get_state = fbnic_phylink_pcs_get_state,
};
static struct phylink_pcs *
fbnic_phylink_mac_select_pcs(struct phylink_config *config,
phy_interface_t interface)
{
struct net_device *netdev = to_net_dev(config->dev);
struct fbnic_net *fbn = netdev_priv(netdev);
return &fbn->phylink_pcs;
}
static void
fbnic_phylink_mac_config(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state)
{
}
static void
fbnic_phylink_mac_link_down(struct phylink_config *config, unsigned int mode,
phy_interface_t interface)
{
struct net_device *netdev = to_net_dev(config->dev);
struct fbnic_net *fbn = netdev_priv(netdev);
struct fbnic_dev *fbd = fbn->fbd;
fbd->mac->link_down(fbd);
fbn->link_down_events++;
}
static void
fbnic_phylink_mac_link_up(struct phylink_config *config,
struct phy_device *phy, unsigned int mode,
phy_interface_t interface, int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct net_device *netdev = to_net_dev(config->dev);
struct fbnic_net *fbn = netdev_priv(netdev);
struct fbnic_dev *fbd = fbn->fbd;
fbd->mac->link_up(fbd, tx_pause, rx_pause);
}
static const struct phylink_mac_ops fbnic_phylink_mac_ops = {
.mac_select_pcs = fbnic_phylink_mac_select_pcs,
.mac_config = fbnic_phylink_mac_config,
.mac_link_down = fbnic_phylink_mac_link_down,
.mac_link_up = fbnic_phylink_mac_link_up,
};
int fbnic_phylink_init(struct net_device *netdev)
{
struct fbnic_net *fbn = netdev_priv(netdev);
struct phylink *phylink;
fbn->phylink_pcs.neg_mode = true;
fbn->phylink_pcs.ops = &fbnic_phylink_pcs_ops;
fbn->phylink_config.dev = &netdev->dev;
fbn->phylink_config.type = PHYLINK_NETDEV;
fbn->phylink_config.mac_capabilities = MAC_SYM_PAUSE | MAC_ASYM_PAUSE |
MAC_10000FD | MAC_25000FD |
MAC_40000FD | MAC_50000FD |
MAC_100000FD;
fbn->phylink_config.default_an_inband = true;
__set_bit(PHY_INTERFACE_MODE_XGMII,
fbn->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_XLGMII,
fbn->phylink_config.supported_interfaces);
phylink = phylink_create(&fbn->phylink_config, NULL,
PHY_INTERFACE_MODE_XLGMII,
&fbnic_phylink_mac_ops);
if (IS_ERR(phylink))
return PTR_ERR(phylink);
fbn->phylink = phylink;
return 0;
}
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