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openwrt/target/linux/mediatek/patches-6.6/739-net-add-negotiation-of-in-band-capabilities.patch
Dim Fish 8290303ea4
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mediatek: add Airoha AN8855 gigabit switch driver 
New revisions of Xiaomi AX3000T with 1.0.84+ stock firmware contain new hardware.
This commit add support for Airoha AN8855 gigabit switch driver with 6.6 kernel patches

Based on https://patchwork.kernel.org/project/netdevbpf/cover/20241209134459.27110-1-ansuelsmth@gmail.com/

Signed-off-by: Dim Fish <dimfish@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/16709
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
(cherry picked from commit 0fd9d00cd6fc285b2a925eb03e6350a4b00fc279)
2025-01-23 15:28:08 +01:00

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41 KiB
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Raw Blame History

From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>, Heiner Kallweit <hkallweit1@gmail.com>
Cc: Alexander Couzens <lynxis@fe80.eu>,
Andrew Lunn <andrew+netdev@lunn.ch>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Daniel Golle <daniel@makrotopia.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Jakub Kicinski <kuba@kernel.org>,
Jose Abreu <Jose.Abreu@synopsys.com>,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org,
Marcin Wojtas <marcin.s.wojtas@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>
Subject: [PATCH RFC net-next 00/16] net: add negotiation of in-band capabilities
Date: Tue, 26 Nov 2024 09:23:48 +0000 [thread overview]
Message-ID: <Z0WTpE8wkpjMiv_J@shell.armlinux.org.uk> (raw)
Hi,
Yes, this is one patch over the limit of 15 for netdev - but I think it's
important to include the last patch to head off review comments like "why
don't you remove phylink_phy_no_inband() in this series?"
Phylink's handling of in-band has been deficient for a long time, and
people keep hitting problems with it. Notably, situations with the way-
to-late standardized 2500Base-X and whether that should or should not
have in-band enabled. We have also been carrying a hack in the form of
phylink_phy_no_inband() for a PHY that has been used on a SFP module,
but has no in-band capabilities, not even for SGMII.
When phylink is trying to operate in in-band mode, this series will look
at the capabilities of the MAC-side PCS and PHY, and work out whether
in-band can or should be used, programming the PHY as appropriate. This
includes in-band bypass mode at the PHY.
We don't... yet... support that on the MAC side PCS, because that
requires yet more complexity.
Patch 1 passes struct phylink and struct phylink_pcs into
phylink_pcs_neg_mode() so we can look at more state in this function in
a future patch.
Patch 2 splits "cur_link_an_mode" (the MLO_AN_* mode) into two separate
purposes - a requested and an active mode. The active mode is the one
we will be using for the MAC, which becomes dependent on the result of
in-band negotiation.
Patch 3 adds debug to phylink_major_config() so we can see what is going
on with the requested and active AN modes.
Patch 4 adds to phylib a method to get the in-band capabilities of the
PHY from phylib. Patches 5 and 6 add implementations for BCM84881 and
some Marvell PHYs found on SFPs.
Patch 7 adds to phylib a method to configure the PHY in-band signalling,
and patch 8 implements it for those Marvell PHYs that support the method
in patch 4.
Patch 9 does the same as patch 4 but for the MAC-side PCS, with patches
10 through 14 adding support to several PCS.
Patch 15 adds the code to phylink_pcs_neg_mode() which looks at the
capabilities, and works out whether to use in-band or out-band mode for
driving the link between the MAC PCS and PHY.
Patch 16 removes the phylink_phy_no_inband() hack now that we are
publishing the in-band capabilities from the BCM84881 PHY driver.
drivers/net/ethernet/marvell/mvneta.c | 27 +-
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 25 +-
drivers/net/pcs/pcs-lynx.c | 22 ++
drivers/net/pcs/pcs-mtk-lynxi.c | 16 ++
drivers/net/pcs/pcs-xpcs.c | 28 ++
drivers/net/phy/bcm84881.c | 10 +
drivers/net/phy/marvell.c | 48 ++++
drivers/net/phy/phy.c | 52 ++++
drivers/net/phy/phylink.c | 352 +++++++++++++++++++-----
include/linux/phy.h | 34 +++
include/linux/phylink.h | 17 ++
11 files changed, 539 insertions(+), 92 deletions(-)
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -56,7 +56,8 @@ struct phylink {
struct phy_device *phydev;
phy_interface_t link_interface; /* PHY_INTERFACE_xxx */
u8 cfg_link_an_mode; /* MLO_AN_xxx */
- u8 cur_link_an_mode;
+ u8 req_link_an_mode; /* Requested MLO_AN_xxx mode */
+ u8 act_link_an_mode; /* Active MLO_AN_xxx mode */
u8 link_port; /* The current non-phy ethtool port */
__ETHTOOL_DECLARE_LINK_MODE_MASK(supported);
@@ -74,6 +75,7 @@ struct phylink {
struct mutex state_mutex;
struct phylink_link_state phy_state;
+ unsigned int phy_ib_mode;
struct work_struct resolve;
unsigned int pcs_neg_mode;
unsigned int pcs_state;
@@ -175,6 +177,24 @@ static const char *phylink_an_mode_str(u
return mode < ARRAY_SIZE(modestr) ? modestr[mode] : "unknown";
}
+static const char *phylink_pcs_mode_str(unsigned int mode)
+{
+ if (!mode)
+ return "none";
+
+ if (mode & PHYLINK_PCS_NEG_OUTBAND)
+ return "outband";
+
+ if (mode & PHYLINK_PCS_NEG_INBAND) {
+ if (mode & PHYLINK_PCS_NEG_ENABLED)
+ return "inband,an-enabled";
+ else
+ return "inband,an-disabled";
+ }
+
+ return "unknown";
+}
+
static unsigned int phylink_interface_signal_rate(phy_interface_t interface)
{
switch (interface) {
@@ -1053,6 +1073,15 @@ static void phylink_resolve_an_pause(str
}
}
+static unsigned int phylink_pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
+{
+ if (pcs && pcs->ops->pcs_inband_caps)
+ return pcs->ops->pcs_inband_caps(pcs, interface);
+
+ return 0;
+}
+
static void phylink_pcs_pre_config(struct phylink_pcs *pcs,
phy_interface_t interface)
{
@@ -1106,6 +1135,24 @@ static void phylink_pcs_link_up(struct p
pcs->ops->pcs_link_up(pcs, neg_mode, interface, speed, duplex);
}
+/* Query inband for a specific interface mode, asking the MAC for the
+ * PCS which will be used to handle the interface mode.
+ */
+static unsigned int phylink_inband_caps(struct phylink *pl,
+ phy_interface_t interface)
+{
+ struct phylink_pcs *pcs;
+
+ if (!pl->mac_ops->mac_select_pcs)
+ return 0;
+
+ pcs = pl->mac_ops->mac_select_pcs(pl->config, interface);
+ if (!pcs)
+ return 0;
+
+ return phylink_pcs_inband_caps(pcs, interface);
+}
+
static void phylink_pcs_poll_stop(struct phylink *pl)
{
if (pl->cfg_link_an_mode == MLO_AN_INBAND)
@@ -1132,13 +1179,13 @@ static void phylink_mac_config(struct ph
phylink_dbg(pl,
"%s: mode=%s/%s/%s adv=%*pb pause=%02x\n",
- __func__, phylink_an_mode_str(pl->cur_link_an_mode),
+ __func__, phylink_an_mode_str(pl->act_link_an_mode),
phy_modes(st.interface),
phy_rate_matching_to_str(st.rate_matching),
__ETHTOOL_LINK_MODE_MASK_NBITS, st.advertising,
st.pause);
- pl->mac_ops->mac_config(pl->config, pl->cur_link_an_mode, &st);
+ pl->mac_ops->mac_config(pl->config, pl->act_link_an_mode, &st);
}
static void phylink_pcs_an_restart(struct phylink *pl)
@@ -1146,13 +1193,14 @@ static void phylink_pcs_an_restart(struc
if (pl->pcs && linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
pl->link_config.advertising) &&
phy_interface_mode_is_8023z(pl->link_config.interface) &&
- phylink_autoneg_inband(pl->cur_link_an_mode))
+ phylink_autoneg_inband(pl->act_link_an_mode))
pl->pcs->ops->pcs_an_restart(pl->pcs);
}
/**
* phylink_pcs_neg_mode() - helper to determine PCS inband mode
- * @mode: one of %MLO_AN_FIXED, %MLO_AN_PHY, %MLO_AN_INBAND.
+ * @pl: a pointer to a &struct phylink returned from phylink_create()
+ * @pcs: a pointer to &struct phylink_pcs
* @interface: interface mode to be used
* @advertising: adertisement ethtool link mode mask
*
@@ -1169,11 +1217,21 @@ static void phylink_pcs_an_restart(struc
* Note: this is for cases where the PCS itself is involved in negotiation
* (e.g. Clause 37, SGMII and similar) not Clause 73.
*/
-static unsigned int phylink_pcs_neg_mode(unsigned int mode,
- phy_interface_t interface,
- const unsigned long *advertising)
+static void phylink_pcs_neg_mode(struct phylink *pl, struct phylink_pcs *pcs,
+ phy_interface_t interface,
+ const unsigned long *advertising)
{
- unsigned int neg_mode;
+ unsigned int pcs_ib_caps = 0;
+ unsigned int phy_ib_caps = 0;
+ unsigned int neg_mode, mode;
+ enum {
+ INBAND_CISCO_SGMII,
+ INBAND_BASEX,
+ } type;
+
+ mode = pl->req_link_an_mode;
+
+ pl->phy_ib_mode = 0;
switch (interface) {
case PHY_INTERFACE_MODE_SGMII:
@@ -1185,10 +1243,7 @@ static unsigned int phylink_pcs_neg_mode
* inband communication. Note: there exist PHYs that run
* with SGMII but do not send the inband data.
*/
- if (!phylink_autoneg_inband(mode))
- neg_mode = PHYLINK_PCS_NEG_OUTBAND;
- else
- neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED;
+ type = INBAND_CISCO_SGMII;
break;
case PHY_INTERFACE_MODE_1000BASEX:
@@ -1199,21 +1254,143 @@ static unsigned int phylink_pcs_neg_mode
* as well, but drivers may not support this, so may
* need to override this.
*/
- if (!phylink_autoneg_inband(mode))
+ type = INBAND_BASEX;
+ break;
+
+ default:
+ pl->pcs_neg_mode = PHYLINK_PCS_NEG_NONE;
+ pl->act_link_an_mode = mode;
+ return;
+ }
+
+ if (pcs)
+ pcs_ib_caps = phylink_pcs_inband_caps(pcs, interface);
+
+ if (pl->phydev)
+ phy_ib_caps = phy_inband_caps(pl->phydev, interface);
+
+ phylink_dbg(pl, "interface %s inband modes: pcs=%02x phy=%02x\n",
+ phy_modes(interface), pcs_ib_caps, phy_ib_caps);
+
+ if (!phylink_autoneg_inband(mode)) {
+ bool pcs_ib_only = false;
+ bool phy_ib_only = false;
+
+ if (pcs_ib_caps && pcs_ib_caps != LINK_INBAND_DISABLE) {
+ /* PCS supports reporting in-band capabilities, and
+ * supports more than disable mode.
+ */
+ if (pcs_ib_caps & LINK_INBAND_DISABLE)
+ neg_mode = PHYLINK_PCS_NEG_OUTBAND;
+ else if (pcs_ib_caps & LINK_INBAND_ENABLE)
+ pcs_ib_only = true;
+ }
+
+ if (phy_ib_caps && phy_ib_caps != LINK_INBAND_DISABLE) {
+ /* PHY supports in-band capabilities, and supports
+ * more than disable mode.
+ */
+ if (phy_ib_caps & LINK_INBAND_DISABLE)
+ pl->phy_ib_mode = LINK_INBAND_DISABLE;
+ else if (phy_ib_caps & LINK_INBAND_BYPASS)
+ pl->phy_ib_mode = LINK_INBAND_BYPASS;
+ else if (phy_ib_caps & LINK_INBAND_ENABLE)
+ phy_ib_only = true;
+ }
+
+ /* If either the PCS or PHY requires inband to be enabled,
+ * this is an invalid configuration. Provide a diagnostic
+ * message for this case, but don't try to force the issue.
+ */
+ if (pcs_ib_only || phy_ib_only)
+ phylink_warn(pl,
+ "firmware wants %s mode, but %s%s%s requires inband\n",
+ phylink_an_mode_str(mode),
+ pcs_ib_only ? "PCS" : "",
+ pcs_ib_only && phy_ib_only ? " and " : "",
+ phy_ib_only ? "PHY" : "");
+
+ neg_mode = PHYLINK_PCS_NEG_OUTBAND;
+ } else if (type == INBAND_CISCO_SGMII || pl->phydev) {
+ /* For SGMII modes which are designed to be used with PHYs, or
+ * Base-X with a PHY, we try to use in-band mode where-ever
+ * possible. However, there are some PHYs e.g. BCM84881 which
+ * do not support in-band.
+ */
+ const unsigned int inband_ok = LINK_INBAND_ENABLE |
+ LINK_INBAND_BYPASS;
+ const unsigned int outband_ok = LINK_INBAND_DISABLE |
+ LINK_INBAND_BYPASS;
+ /* PCS PHY
+ * D E D E
+ * 0 0 0 0 no information inband enabled
+ * 1 0 0 0 pcs doesn't support outband
+ * 0 1 0 0 pcs required inband enabled
+ * 1 1 0 0 pcs optional inband enabled
+ * 0 0 1 0 phy doesn't support outband
+ * 1 0 1 0 pcs+phy doesn't support outband
+ * 0 1 1 0 pcs required, phy doesn't support, invalid
+ * 1 1 1 0 pcs optional, phy doesn't support, outband
+ * 0 0 0 1 phy required inband enabled
+ * 1 0 0 1 pcs doesn't support, phy required, invalid
+ * 0 1 0 1 pcs+phy required inband enabled
+ * 1 1 0 1 pcs optional, phy required inband enabled
+ * 0 0 1 1 phy optional inband enabled
+ * 1 0 1 1 pcs doesn't support, phy optional, outband
+ * 0 1 1 1 pcs required, phy optional inband enabled
+ * 1 1 1 1 pcs+phy optional inband enabled
+ */
+ if ((!pcs_ib_caps || pcs_ib_caps & inband_ok) &&
+ (!phy_ib_caps || phy_ib_caps & inband_ok)) {
+ /* In-band supported or unknown at both ends. Enable
+ * in-band mode with or without bypass at the PHY.
+ */
+ if (phy_ib_caps & LINK_INBAND_ENABLE)
+ pl->phy_ib_mode = LINK_INBAND_ENABLE;
+ else if (phy_ib_caps & LINK_INBAND_BYPASS)
+ pl->phy_ib_mode = LINK_INBAND_BYPASS;
+
+ neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED;
+ } else if ((!pcs_ib_caps || pcs_ib_caps & outband_ok) &&
+ (!phy_ib_caps || phy_ib_caps & outband_ok)) {
+ /* Either in-band not supported at at least one end.
+ * In-band bypass at the other end is possible.
+ */
+ if (phy_ib_caps & LINK_INBAND_DISABLE)
+ pl->phy_ib_mode = LINK_INBAND_DISABLE;
+ else if (phy_ib_caps & LINK_INBAND_BYPASS)
+ pl->phy_ib_mode = LINK_INBAND_BYPASS;
+
neg_mode = PHYLINK_PCS_NEG_OUTBAND;
+ if (pl->phydev)
+ mode = MLO_AN_PHY;
+ } else {
+ /* invalid */
+ phylink_warn(pl, "%s: incompatible in-band capabilities, trying in-band",
+ phy_modes(interface));
+ neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED;
+ }
+ } else {
+ /* For Base-X without a PHY */
+ if (pcs_ib_caps == LINK_INBAND_DISABLE)
+ /* If the PCS doesn't support inband, then inband must
+ * be disabled.
+ */
+ neg_mode = PHYLINK_PCS_NEG_INBAND_DISABLED;
+ else if (pcs_ib_caps == LINK_INBAND_ENABLE)
+ /* If the PCS requires inband, then inband must always
+ * be enabled.
+ */
+ neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED;
else if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
advertising))
neg_mode = PHYLINK_PCS_NEG_INBAND_ENABLED;
else
neg_mode = PHYLINK_PCS_NEG_INBAND_DISABLED;
- break;
-
- default:
- neg_mode = PHYLINK_PCS_NEG_NONE;
- break;
}
- return neg_mode;
+ pl->pcs_neg_mode = neg_mode;
+ pl->act_link_an_mode = mode;
}
static void phylink_major_config(struct phylink *pl, bool restart,
@@ -1225,11 +1402,9 @@ static void phylink_major_config(struct
unsigned int neg_mode;
int err;
- phylink_dbg(pl, "major config %s\n", phy_modes(state->interface));
-
- pl->pcs_neg_mode = phylink_pcs_neg_mode(pl->cur_link_an_mode,
- state->interface,
- state->advertising);
+ phylink_dbg(pl, "major config, requested %s/%s\n",
+ phylink_an_mode_str(pl->req_link_an_mode),
+ phy_modes(state->interface));
if (pl->using_mac_select_pcs) {
pcs = pl->mac_ops->mac_select_pcs(pl->config, state->interface);
@@ -1243,10 +1418,17 @@ static void phylink_major_config(struct
pcs_changed = pcs && pl->pcs != pcs;
}
+ phylink_pcs_neg_mode(pl, pcs, state->interface, state->advertising);
+
+ phylink_dbg(pl, "major config, active %s/%s/%s\n",
+ phylink_an_mode_str(pl->act_link_an_mode),
+ phylink_pcs_mode_str(pl->pcs_neg_mode),
+ phy_modes(state->interface));
+
phylink_pcs_poll_stop(pl);
if (pl->mac_ops->mac_prepare) {
- err = pl->mac_ops->mac_prepare(pl->config, pl->cur_link_an_mode,
+ err = pl->mac_ops->mac_prepare(pl->config, pl->act_link_an_mode,
state->interface);
if (err < 0) {
phylink_err(pl, "mac_prepare failed: %pe\n",
@@ -1280,7 +1462,7 @@ static void phylink_major_config(struct
if (pl->pcs_state == PCS_STATE_STARTING || pcs_changed)
phylink_pcs_enable(pl->pcs);
- neg_mode = pl->cur_link_an_mode;
+ neg_mode = pl->act_link_an_mode;
if (pl->pcs && pl->pcs->neg_mode)
neg_mode = pl->pcs_neg_mode;
@@ -1296,13 +1478,20 @@ static void phylink_major_config(struct
phylink_pcs_an_restart(pl);
if (pl->mac_ops->mac_finish) {
- err = pl->mac_ops->mac_finish(pl->config, pl->cur_link_an_mode,
+ err = pl->mac_ops->mac_finish(pl->config, pl->act_link_an_mode,
state->interface);
if (err < 0)
phylink_err(pl, "mac_finish failed: %pe\n",
ERR_PTR(err));
}
+ if (pl->phydev && pl->phy_ib_mode) {
+ err = phy_config_inband(pl->phydev, pl->phy_ib_mode);
+ if (err < 0)
+ phylink_err(pl, "phy_config_inband: %pe\n",
+ ERR_PTR(err));
+ }
+
if (pl->sfp_bus) {
rate_kbd = phylink_interface_signal_rate(state->interface);
if (rate_kbd)
@@ -1327,17 +1516,16 @@ static int phylink_change_inband_advert(
return 0;
phylink_dbg(pl, "%s: mode=%s/%s adv=%*pb pause=%02x\n", __func__,
- phylink_an_mode_str(pl->cur_link_an_mode),
+ phylink_an_mode_str(pl->req_link_an_mode),
phy_modes(pl->link_config.interface),
__ETHTOOL_LINK_MODE_MASK_NBITS, pl->link_config.advertising,
pl->link_config.pause);
/* Recompute the PCS neg mode */
- pl->pcs_neg_mode = phylink_pcs_neg_mode(pl->cur_link_an_mode,
- pl->link_config.interface,
- pl->link_config.advertising);
+ phylink_pcs_neg_mode(pl, pl->pcs, pl->link_config.interface,
+ pl->link_config.advertising);
- neg_mode = pl->cur_link_an_mode;
+ neg_mode = pl->act_link_an_mode;
if (pl->pcs->neg_mode)
neg_mode = pl->pcs_neg_mode;
@@ -1402,7 +1590,7 @@ static void phylink_mac_initial_config(s
{
struct phylink_link_state link_state;
- switch (pl->cur_link_an_mode) {
+ switch (pl->req_link_an_mode) {
case MLO_AN_PHY:
link_state = pl->phy_state;
break;
@@ -1476,14 +1664,14 @@ static void phylink_link_up(struct phyli
pl->cur_interface = link_state.interface;
- neg_mode = pl->cur_link_an_mode;
+ neg_mode = pl->act_link_an_mode;
if (pl->pcs && pl->pcs->neg_mode)
neg_mode = pl->pcs_neg_mode;
phylink_pcs_link_up(pl->pcs, neg_mode, pl->cur_interface, speed,
duplex);
- pl->mac_ops->mac_link_up(pl->config, pl->phydev, pl->cur_link_an_mode,
+ pl->mac_ops->mac_link_up(pl->config, pl->phydev, pl->act_link_an_mode,
pl->cur_interface, speed, duplex,
!!(link_state.pause & MLO_PAUSE_TX), rx_pause);
@@ -1503,7 +1691,7 @@ static void phylink_link_down(struct phy
if (ndev)
netif_carrier_off(ndev);
- pl->mac_ops->mac_link_down(pl->config, pl->cur_link_an_mode,
+ pl->mac_ops->mac_link_down(pl->config, pl->act_link_an_mode,
pl->cur_interface);
phylink_info(pl, "Link is Down\n");
}
@@ -1530,7 +1718,7 @@ static void phylink_resolve(struct work_
link_state.link = false;
retrigger = true;
} else {
- switch (pl->cur_link_an_mode) {
+ switch (pl->act_link_an_mode) {
case MLO_AN_PHY:
link_state = pl->phy_state;
phylink_apply_manual_flow(pl, &link_state);
@@ -1773,7 +1961,7 @@ struct phylink *phylink_create(struct ph
}
}
- pl->cur_link_an_mode = pl->cfg_link_an_mode;
+ pl->req_link_an_mode = pl->cfg_link_an_mode;
ret = phylink_register_sfp(pl, fwnode);
if (ret < 0) {
@@ -2236,7 +2424,7 @@ void phylink_start(struct phylink *pl)
ASSERT_RTNL();
phylink_info(pl, "configuring for %s/%s link mode\n",
- phylink_an_mode_str(pl->cur_link_an_mode),
+ phylink_an_mode_str(pl->req_link_an_mode),
phy_modes(pl->link_config.interface));
/* Always set the carrier off */
@@ -2495,7 +2683,7 @@ int phylink_ethtool_ksettings_get(struct
linkmode_copy(kset->link_modes.supported, pl->supported);
- switch (pl->cur_link_an_mode) {
+ switch (pl->act_link_an_mode) {
case MLO_AN_FIXED:
/* We are using fixed settings. Report these as the
* current link settings - and note that these also
@@ -2526,6 +2714,26 @@ int phylink_ethtool_ksettings_get(struct
}
EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_get);
+static bool phylink_validate_pcs_inband_autoneg(struct phylink *pl,
+ phy_interface_t interface,
+ unsigned long *adv)
+{
+ unsigned int inband = phylink_inband_caps(pl, interface);
+ unsigned int mask;
+
+ /* If the PCS doesn't implement inband support, be permissive. */
+ if (!inband)
+ return true;
+
+ if (linkmode_test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, adv))
+ mask = LINK_INBAND_ENABLE;
+ else
+ mask = LINK_INBAND_DISABLE;
+
+ /* Check whether the PCS implements the required mode */
+ return !!(inband & mask);
+}
+
/**
* phylink_ethtool_ksettings_set() - set the link settings
* @pl: a pointer to a &struct phylink returned from phylink_create()
@@ -2587,7 +2795,7 @@ int phylink_ethtool_ksettings_set(struct
/* If we have a fixed link, refuse to change link parameters.
* If the link parameters match, accept them but do nothing.
*/
- if (pl->cur_link_an_mode == MLO_AN_FIXED) {
+ if (pl->req_link_an_mode == MLO_AN_FIXED) {
if (s->speed != pl->link_config.speed ||
s->duplex != pl->link_config.duplex)
return -EINVAL;
@@ -2603,7 +2811,7 @@ int phylink_ethtool_ksettings_set(struct
* is our default case) but do not allow the advertisement to
* be changed. If the advertisement matches, simply return.
*/
- if (pl->cur_link_an_mode == MLO_AN_FIXED) {
+ if (pl->req_link_an_mode == MLO_AN_FIXED) {
if (!linkmode_equal(config.advertising,
pl->link_config.advertising))
return -EINVAL;
@@ -2643,7 +2851,7 @@ int phylink_ethtool_ksettings_set(struct
linkmode_copy(support, pl->supported);
if (phylink_validate(pl, support, &config)) {
phylink_err(pl, "validation of %s/%s with support %*pb failed\n",
- phylink_an_mode_str(pl->cur_link_an_mode),
+ phylink_an_mode_str(pl->req_link_an_mode),
phy_modes(config.interface),
__ETHTOOL_LINK_MODE_MASK_NBITS, support);
return -EINVAL;
@@ -2661,6 +2869,13 @@ int phylink_ethtool_ksettings_set(struct
phylink_is_empty_linkmode(config.advertising))
return -EINVAL;
+ /* Validate the autonegotiation state. We don't have a PHY in this
+ * situation, so the PCS is the media-facing entity.
+ */
+ if (!phylink_validate_pcs_inband_autoneg(pl, config.interface,
+ config.advertising))
+ return -EINVAL;
+
mutex_lock(&pl->state_mutex);
pl->link_config.speed = config.speed;
pl->link_config.duplex = config.duplex;
@@ -2743,7 +2958,7 @@ int phylink_ethtool_set_pauseparam(struc
ASSERT_RTNL();
- if (pl->cur_link_an_mode == MLO_AN_FIXED)
+ if (pl->req_link_an_mode == MLO_AN_FIXED)
return -EOPNOTSUPP;
if (!phylink_test(pl->supported, Pause) &&
@@ -3007,7 +3222,7 @@ static int phylink_mii_read(struct phyli
struct phylink_link_state state;
int val = 0xffff;
- switch (pl->cur_link_an_mode) {
+ switch (pl->act_link_an_mode) {
case MLO_AN_FIXED:
if (phy_id == 0) {
phylink_get_fixed_state(pl, &state);
@@ -3032,7 +3247,7 @@ static int phylink_mii_read(struct phyli
static int phylink_mii_write(struct phylink *pl, unsigned int phy_id,
unsigned int reg, unsigned int val)
{
- switch (pl->cur_link_an_mode) {
+ switch (pl->act_link_an_mode) {
case MLO_AN_FIXED:
break;
@@ -3202,10 +3417,11 @@ static phy_interface_t phylink_choose_sf
return interface;
}
-static void phylink_sfp_set_config(struct phylink *pl, u8 mode,
+static void phylink_sfp_set_config(struct phylink *pl,
unsigned long *supported,
struct phylink_link_state *state)
{
+ u8 mode = MLO_AN_INBAND;
bool changed = false;
phylink_dbg(pl, "requesting link mode %s/%s with support %*pb\n",
@@ -3222,9 +3438,9 @@ static void phylink_sfp_set_config(struc
changed = true;
}
- if (pl->cur_link_an_mode != mode ||
+ if (pl->req_link_an_mode != mode ||
pl->link_config.interface != state->interface) {
- pl->cur_link_an_mode = mode;
+ pl->req_link_an_mode = mode;
pl->link_config.interface = state->interface;
changed = true;
@@ -3239,8 +3455,7 @@ static void phylink_sfp_set_config(struc
phylink_mac_initial_config(pl, false);
}
-static int phylink_sfp_config_phy(struct phylink *pl, u8 mode,
- struct phy_device *phy)
+static int phylink_sfp_config_phy(struct phylink *pl, struct phy_device *phy)
{
__ETHTOOL_DECLARE_LINK_MODE_MASK(support1);
__ETHTOOL_DECLARE_LINK_MODE_MASK(support);
@@ -3279,8 +3494,7 @@ static int phylink_sfp_config_phy(struct
ret = phylink_validate(pl, support1, &config);
if (ret) {
phylink_err(pl,
- "validation of %s/%s with support %*pb failed: %pe\n",
- phylink_an_mode_str(mode),
+ "validation of %s with support %*pb failed: %pe\n",
phy_modes(config.interface),
__ETHTOOL_LINK_MODE_MASK_NBITS, support,
ERR_PTR(ret));
@@ -3289,7 +3503,7 @@ static int phylink_sfp_config_phy(struct
pl->link_port = pl->sfp_port;
- phylink_sfp_set_config(pl, mode, support, &config);
+ phylink_sfp_set_config(pl, support, &config);
return 0;
}
@@ -3345,6 +3559,12 @@ static int phylink_sfp_config_optical(st
phylink_dbg(pl, "optical SFP: chosen %s interface\n",
phy_modes(interface));
+ if (!phylink_validate_pcs_inband_autoneg(pl, interface,
+ config.advertising)) {
+ phylink_err(pl, "autoneg setting not compatible with PCS");
+ return -EINVAL;
+ }
+
config.interface = interface;
/* Ignore errors if we're expecting a PHY to attach later */
@@ -3358,7 +3578,7 @@ static int phylink_sfp_config_optical(st
pl->link_port = pl->sfp_port;
- phylink_sfp_set_config(pl, MLO_AN_INBAND, pl->sfp_support, &config);
+ phylink_sfp_set_config(pl, pl->sfp_support, &config);
return 0;
}
@@ -3429,20 +3649,10 @@ static void phylink_sfp_link_up(void *up
phylink_enable_and_run_resolve(pl, PHYLINK_DISABLE_LINK);
}
-/* The Broadcom BCM84881 in the Methode DM7052 is unable to provide a SGMII
- * or 802.3z control word, so inband will not work.
- */
-static bool phylink_phy_no_inband(struct phy_device *phy)
-{
- return phy->is_c45 && phy_id_compare(phy->c45_ids.device_ids[1],
- 0xae025150, 0xfffffff0);
-}
-
static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
{
struct phylink *pl = upstream;
phy_interface_t interface;
- u8 mode;
int ret;
/*
@@ -3454,17 +3664,12 @@ static int phylink_sfp_connect_phy(void
*/
phy_support_asym_pause(phy);
- if (phylink_phy_no_inband(phy))
- mode = MLO_AN_PHY;
- else
- mode = MLO_AN_INBAND;
-
/* Set the PHY's host supported interfaces */
phy_interface_and(phy->host_interfaces, phylink_sfp_interfaces,
pl->config->supported_interfaces);
/* Do the initial configuration */
- ret = phylink_sfp_config_phy(pl, mode, phy);
+ ret = phylink_sfp_config_phy(pl, phy);
if (ret < 0)
return ret;
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -973,6 +973,58 @@ static int phy_check_link_status(struct
}
/**
+ * phy_inband_caps - query which in-band signalling modes are supported
+ * @phydev: a pointer to a &struct phy_device
+ * @interface: the interface mode for the PHY
+ *
+ * Returns zero if it is unknown what in-band signalling is supported by the
+ * PHY (e.g. because the PHY driver doesn't implement the method.) Otherwise,
+ * returns a bit mask of the LINK_INBAND_* values from
+ * &enum link_inband_signalling to describe which inband modes are supported
+ * by the PHY for this interface mode.
+ */
+unsigned int phy_inband_caps(struct phy_device *phydev,
+ phy_interface_t interface)
+{
+ if (phydev->drv && phydev->drv->inband_caps)
+ return phydev->drv->inband_caps(phydev, interface);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(phy_inband_caps);
+
+/**
+ * phy_config_inband - configure the desired PHY in-band mode
+ * @phydev: the phy_device struct
+ * @modes: in-band modes to configure
+ *
+ * Description: disables, enables or enables-with-bypass in-band signalling
+ * between the PHY and host system.
+ *
+ * Returns: zero on success, or negative errno value.
+ */
+int phy_config_inband(struct phy_device *phydev, unsigned int modes)
+{
+ int err;
+
+ if (!!(modes & LINK_INBAND_DISABLE) +
+ !!(modes & LINK_INBAND_ENABLE) +
+ !!(modes & LINK_INBAND_BYPASS) != 1)
+ return -EINVAL;
+
+ mutex_lock(&phydev->lock);
+ if (!phydev->drv)
+ err = -EIO;
+ else if (!phydev->drv->config_inband)
+ err = -EOPNOTSUPP;
+ else
+ err = phydev->drv->config_inband(phydev, modes);
+ mutex_unlock(&phydev->lock);
+
+ return err;
+}
+
+/**
* _phy_start_aneg - start auto-negotiation for this PHY device
* @phydev: the phy_device struct
*
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -800,6 +800,24 @@ struct phy_tdr_config {
#define PHY_PAIR_ALL -1
/**
+ * enum link_inband_signalling - in-band signalling modes that are supported
+ *
+ * @LINK_INBAND_DISABLE: in-band signalling can be disabled
+ * @LINK_INBAND_ENABLE: in-band signalling can be enabled without bypass
+ * @LINK_INBAND_BYPASS: in-band signalling can be enabled with bypass
+ *
+ * The possible and required bits can only be used if the valid bit is set.
+ * If possible is clear, that means inband signalling can not be used.
+ * Required is only valid when possible is set, and means that inband
+ * signalling must be used.
+ */
+enum link_inband_signalling {
+ LINK_INBAND_DISABLE = BIT(0),
+ LINK_INBAND_ENABLE = BIT(1),
+ LINK_INBAND_BYPASS = BIT(2),
+};
+
+/**
* struct phy_plca_cfg - Configuration of the PLCA (Physical Layer Collision
* Avoidance) Reconciliation Sublayer.
*
@@ -939,6 +957,19 @@ struct phy_driver {
int (*get_features)(struct phy_device *phydev);
/**
+ * @inband_caps: query whether in-band is supported for the given PHY
+ * interface mode. Returns a bitmask of bits defined by enum
+ * link_inband_signalling.
+ */
+ unsigned int (*inband_caps)(struct phy_device *phydev,
+ phy_interface_t interface);
+
+ /**
+ * @config_inband: configure in-band mode for the PHY
+ */
+ int (*config_inband)(struct phy_device *phydev, unsigned int modes);
+
+ /**
* @get_rate_matching: Get the supported type of rate matching for a
* particular phy interface. This is used by phy consumers to determine
* whether to advertise lower-speed modes for that interface. It is
@@ -1774,6 +1805,9 @@ void phy_stop(struct phy_device *phydev)
int phy_config_aneg(struct phy_device *phydev);
int phy_start_aneg(struct phy_device *phydev);
int phy_aneg_done(struct phy_device *phydev);
+unsigned int phy_inband_caps(struct phy_device *phydev,
+ phy_interface_t interface);
+int phy_config_inband(struct phy_device *phydev, unsigned int modes);
int phy_speed_down(struct phy_device *phydev, bool sync);
int phy_speed_up(struct phy_device *phydev);
bool phy_check_valid(int speed, int duplex, unsigned long *features);
--- a/drivers/net/phy/bcm84881.c
+++ b/drivers/net/phy/bcm84881.c
@@ -223,11 +223,21 @@ static int bcm84881_read_status(struct p
return genphy_c45_read_mdix(phydev);
}
+/* The Broadcom BCM84881 in the Methode DM7052 is unable to provide a SGMII
+ * or 802.3z control word, so inband will not work.
+ */
+static unsigned int bcm84881_inband_caps(struct phy_device *phydev,
+ phy_interface_t interface)
+{
+ return LINK_INBAND_DISABLE;
+}
+
static struct phy_driver bcm84881_drivers[] = {
{
.phy_id = 0xae025150,
.phy_id_mask = 0xfffffff0,
.name = "Broadcom BCM84881",
+ .inband_caps = bcm84881_inband_caps,
.config_init = bcm84881_config_init,
.probe = bcm84881_probe,
.get_features = bcm84881_get_features,
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -673,6 +673,48 @@ static int marvell_config_aneg_fiber(str
return genphy_check_and_restart_aneg(phydev, changed);
}
+static unsigned int m88e1111_inband_caps(struct phy_device *phydev,
+ phy_interface_t interface)
+{
+ /* In 1000base-X and SGMII modes, the inband mode can be changed
+ * through the Fibre page BMCR ANENABLE bit.
+ */
+ if (interface == PHY_INTERFACE_MODE_1000BASEX ||
+ interface == PHY_INTERFACE_MODE_SGMII)
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE |
+ LINK_INBAND_BYPASS;
+
+ return 0;
+}
+
+static int m88e1111_config_inband(struct phy_device *phydev, unsigned int modes)
+{
+ u16 extsr, bmcr;
+ int err;
+
+ if (phydev->interface != PHY_INTERFACE_MODE_1000BASEX &&
+ phydev->interface != PHY_INTERFACE_MODE_SGMII)
+ return -EINVAL;
+
+ if (modes == LINK_INBAND_BYPASS)
+ extsr = MII_M1111_HWCFG_SERIAL_AN_BYPASS;
+ else
+ extsr = 0;
+
+ if (modes == LINK_INBAND_DISABLE)
+ bmcr = 0;
+ else
+ bmcr = BMCR_ANENABLE;
+
+ err = phy_modify(phydev, MII_M1111_PHY_EXT_SR,
+ MII_M1111_HWCFG_SERIAL_AN_BYPASS, extsr);
+ if (err < 0)
+ return extsr;
+
+ return phy_modify_paged(phydev, MII_MARVELL_FIBER_PAGE, MII_BMCR,
+ BMCR_ANENABLE, bmcr);
+}
+
static int m88e1111_config_aneg(struct phy_device *phydev)
{
int extsr = phy_read(phydev, MII_M1111_PHY_EXT_SR);
@@ -3292,6 +3334,8 @@ static struct phy_driver marvell_drivers
.name = "Marvell 88E1112",
/* PHY_GBIT_FEATURES */
.probe = marvell_probe,
+ .inband_caps = m88e1111_inband_caps,
+ .config_inband = m88e1111_config_inband,
.config_init = m88e1112_config_init,
.config_aneg = marvell_config_aneg,
.config_intr = marvell_config_intr,
@@ -3312,6 +3356,8 @@ static struct phy_driver marvell_drivers
.name = "Marvell 88E1111",
/* PHY_GBIT_FEATURES */
.probe = marvell_probe,
+ .inband_caps = m88e1111_inband_caps,
+ .config_inband = m88e1111_config_inband,
.config_init = m88e1111gbe_config_init,
.config_aneg = m88e1111_config_aneg,
.read_status = marvell_read_status,
@@ -3333,6 +3379,8 @@ static struct phy_driver marvell_drivers
.name = "Marvell 88E1111 (Finisar)",
/* PHY_GBIT_FEATURES */
.probe = marvell_probe,
+ .inband_caps = m88e1111_inband_caps,
+ .config_inband = m88e1111_config_inband,
.config_init = m88e1111gbe_config_init,
.config_aneg = m88e1111_config_aneg,
.read_status = marvell_read_status,
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -432,6 +432,7 @@ struct phylink_pcs {
/**
* struct phylink_pcs_ops - MAC PCS operations structure.
* @pcs_validate: validate the link configuration.
+ * @pcs_inband_caps: query inband support for interface mode.
* @pcs_enable: enable the PCS.
* @pcs_disable: disable the PCS.
* @pcs_pre_config: pre-mac_config method (for errata)
@@ -445,6 +446,8 @@ struct phylink_pcs {
struct phylink_pcs_ops {
int (*pcs_validate)(struct phylink_pcs *pcs, unsigned long *supported,
const struct phylink_link_state *state);
+ unsigned int (*pcs_inband_caps)(struct phylink_pcs *pcs,
+ phy_interface_t interface);
int (*pcs_enable)(struct phylink_pcs *pcs);
void (*pcs_disable)(struct phylink_pcs *pcs);
void (*pcs_pre_config)(struct phylink_pcs *pcs,
@@ -481,6 +484,20 @@ int pcs_validate(struct phylink_pcs *pcs
const struct phylink_link_state *state);
/**
+ * pcs_inband_caps - query PCS in-band capabilities for interface mode.
+ * @pcs: a pointer to a &struct phylink_pcs.
+ * @interface: interface mode to be queried
+ *
+ * Returns zero if it is unknown what in-band signalling is supported by the
+ * PHY (e.g. because the PHY driver doesn't implement the method.) Otherwise,
+ * returns a bit mask of the LINK_INBAND_* values from
+ * &enum link_inband_signalling to describe which inband modes are supported
+ * for this interface mode.
+ */
+unsigned int pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface);
+
+/**
* pcs_enable() - enable the PCS.
* @pcs: a pointer to a &struct phylink_pcs.
*/
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -3959,20 +3959,27 @@ static struct mvneta_port *mvneta_pcs_to
return container_of(pcs, struct mvneta_port, phylink_pcs);
}
-static int mvneta_pcs_validate(struct phylink_pcs *pcs,
- unsigned long *supported,
- const struct phylink_link_state *state)
+static unsigned int mvneta_pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
{
- /* We only support QSGMII, SGMII, 802.3z and RGMII modes.
- * When in 802.3z mode, we must have AN enabled:
+ /* When operating in an 802.3z mode, we must have AN enabled:
* "Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ...
* When <PortType> = 1 (1000BASE-X) this field must be set to 1."
+ * Therefore, inband is "required".
*/
- if (phy_interface_mode_is_8023z(state->interface) &&
- !phylink_test(state->advertising, Autoneg))
- return -EINVAL;
+ if (phy_interface_mode_is_8023z(interface))
+ return LINK_INBAND_ENABLE;
- return 0;
+ /* QSGMII, SGMII and RGMII can be configured to use inband
+ * signalling of the AN result. Indicate these as "possible".
+ */
+ if (interface == PHY_INTERFACE_MODE_SGMII ||
+ interface == PHY_INTERFACE_MODE_QSGMII ||
+ phy_interface_mode_is_rgmii(interface))
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ /* For any other modes, indicate that inband is not supported. */
+ return LINK_INBAND_DISABLE;
}
static void mvneta_pcs_get_state(struct phylink_pcs *pcs,
@@ -4070,7 +4077,7 @@ static void mvneta_pcs_an_restart(struct
}
static const struct phylink_pcs_ops mvneta_phylink_pcs_ops = {
- .pcs_validate = mvneta_pcs_validate,
+ .pcs_inband_caps = mvneta_pcs_inband_caps,
.pcs_get_state = mvneta_pcs_get_state,
.pcs_config = mvneta_pcs_config,
.pcs_an_restart = mvneta_pcs_an_restart,
--- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
+++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
@@ -6214,19 +6214,26 @@ static const struct phylink_pcs_ops mvpp
.pcs_config = mvpp2_xlg_pcs_config,
};
-static int mvpp2_gmac_pcs_validate(struct phylink_pcs *pcs,
- unsigned long *supported,
- const struct phylink_link_state *state)
+static unsigned int mvpp2_gmac_pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
{
- /* When in 802.3z mode, we must have AN enabled:
+ /* When operating in an 802.3z mode, we must have AN enabled:
* Bit 2 Field InBandAnEn In-band Auto-Negotiation enable. ...
* When <PortType> = 1 (1000BASE-X) this field must be set to 1.
+ * Therefore, inband is "required".
*/
- if (phy_interface_mode_is_8023z(state->interface) &&
- !phylink_test(state->advertising, Autoneg))
- return -EINVAL;
+ if (phy_interface_mode_is_8023z(interface))
+ return LINK_INBAND_ENABLE;
- return 0;
+ /* SGMII and RGMII can be configured to use inband signalling of the
+ * AN result. Indicate these as "possible".
+ */
+ if (interface == PHY_INTERFACE_MODE_SGMII ||
+ phy_interface_mode_is_rgmii(interface))
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ /* For any other modes, indicate that inband is not supported. */
+ return LINK_INBAND_DISABLE;
}
static void mvpp2_gmac_pcs_get_state(struct phylink_pcs *pcs,
@@ -6333,7 +6340,7 @@ static void mvpp2_gmac_pcs_an_restart(st
}
static const struct phylink_pcs_ops mvpp2_phylink_gmac_pcs_ops = {
- .pcs_validate = mvpp2_gmac_pcs_validate,
+ .pcs_inband_caps = mvpp2_gmac_pcs_inband_caps,
.pcs_get_state = mvpp2_gmac_pcs_get_state,
.pcs_config = mvpp2_gmac_pcs_config,
.pcs_an_restart = mvpp2_gmac_pcs_an_restart,
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -35,6 +35,27 @@ enum sgmii_speed {
#define phylink_pcs_to_lynx(pl_pcs) container_of((pl_pcs), struct lynx_pcs, pcs)
#define lynx_to_phylink_pcs(lynx) (&(lynx)->pcs)
+static unsigned int lynx_pcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
+{
+ switch (interface) {
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_QSGMII:
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ case PHY_INTERFACE_MODE_10GBASER:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ return LINK_INBAND_DISABLE;
+
+ case PHY_INTERFACE_MODE_USXGMII:
+ return LINK_INBAND_ENABLE;
+
+ default:
+ return 0;
+ }
+}
+
static void lynx_pcs_get_state_usxgmii(struct mdio_device *pcs,
struct phylink_link_state *state)
{
@@ -307,6 +328,7 @@ static void lynx_pcs_link_up(struct phyl
}
static const struct phylink_pcs_ops lynx_pcs_phylink_ops = {
+ .pcs_inband_caps = lynx_pcs_inband_caps,
.pcs_get_state = lynx_pcs_get_state,
.pcs_config = lynx_pcs_config,
.pcs_an_restart = lynx_pcs_an_restart,
--- a/drivers/net/pcs/pcs-mtk-lynxi.c
+++ b/drivers/net/pcs/pcs-mtk-lynxi.c
@@ -110,6 +110,21 @@ static struct mtk_pcs_lynxi *pcs_to_mtk_
return container_of(pcs, struct mtk_pcs_lynxi, pcs);
}
+static unsigned int mtk_pcs_lynxi_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
+{
+ switch (interface) {
+ case PHY_INTERFACE_MODE_1000BASEX:
+ case PHY_INTERFACE_MODE_2500BASEX:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_QSGMII:
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ default:
+ return 0;
+ }
+}
+
static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs,
struct phylink_link_state *state)
{
@@ -302,6 +317,7 @@ static void mtk_pcs_lynxi_disable(struct
}
static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = {
+ .pcs_inband_caps = mtk_pcs_lynxi_inband_caps,
.pcs_get_state = mtk_pcs_lynxi_get_state,
.pcs_config = mtk_pcs_lynxi_config,
.pcs_an_restart = mtk_pcs_lynxi_restart_an,
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -628,6 +628,33 @@ static int xpcs_validate(struct phylink_
return 0;
}
+static unsigned int xpcs_inband_caps(struct phylink_pcs *pcs,
+ phy_interface_t interface)
+{
+ struct dw_xpcs *xpcs = phylink_pcs_to_xpcs(pcs);
+ const struct dw_xpcs_compat *compat;
+
+ compat = xpcs_find_compat(xpcs, interface);
+ if (!compat)
+ return 0;
+
+ switch (compat->an_mode) {
+ case DW_AN_C73:
+ return LINK_INBAND_ENABLE;
+
+ case DW_AN_C37_SGMII:
+ case DW_AN_C37_1000BASEX:
+ return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
+
+ case DW_10GBASER:
+ case DW_2500BASEX:
+ return LINK_INBAND_DISABLE;
+
+ default:
+ return 0;
+ }
+}
+
void xpcs_get_interfaces(struct dw_xpcs *xpcs, unsigned long *interfaces)
{
int i, j;
@@ -1331,6 +1358,7 @@ static const struct xpcs_id xpcs_id_list
static const struct phylink_pcs_ops xpcs_phylink_ops = {
.pcs_validate = xpcs_validate,
+ .pcs_inband_caps = xpcs_inband_caps,
.pcs_config = xpcs_config,
.pcs_get_state = xpcs_get_state,
.pcs_an_restart = xpcs_an_restart,
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