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Date: Thu, 03 Feb 2022 17:31:07 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Florian Fainelli <f.fainelli@...il.com>
Cc: Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH RFC net-next 4/5] net: dsa: b53: switch to using
phylink_generic_validate()
Switch the Broadcom b53 driver to using the phylink_generic_validate()
implementation by removing its own .phylink_validate method and
associated code.
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
drivers/net/dsa/b53/b53_common.c | 57 ++++++++------------------------
drivers/net/dsa/b53/b53_priv.h | 6 ----
drivers/net/dsa/b53/b53_serdes.c | 22 ------------
drivers/net/dsa/b53/b53_serdes.h | 3 --
drivers/net/dsa/b53/b53_srab.c | 1 -
5 files changed, 13 insertions(+), 76 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index a637e44bce0b..50a372dc32ae 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1309,48 +1309,6 @@ void b53_port_event(struct dsa_switch *ds, int port)
}
EXPORT_SYMBOL(b53_port_event);
-void b53_phylink_validate(struct dsa_switch *ds, int port,
- unsigned long *supported,
- struct phylink_link_state *state)
-{
- struct b53_device *dev = ds->priv;
- __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
-
- if (dev->ops->serdes_phylink_validate)
- dev->ops->serdes_phylink_validate(dev, port, mask, state);
-
- /* Allow all the expected bits */
- phylink_set(mask, Autoneg);
- phylink_set_port_modes(mask);
- phylink_set(mask, Pause);
- phylink_set(mask, Asym_Pause);
-
- /* With the exclusion of 5325/5365, MII, Reverse MII and 802.3z, we
- * support Gigabit, including Half duplex.
- *
- * FIXME: this is weird - 802.3z is always Gigabit, but we exclude
- * it here. Why? This makes no sense.
- */
- if (!(state->interface == PHY_INTERFACE_MODE_MII ||
- state->interface == PHY_INTERFACE_MODE_REVMII ||
- phy_interface_mode_is_8023z(state->interface) ||
- is5325(dev) || is5365(dev))) {
- phylink_set(mask, 1000baseT_Full);
- phylink_set(mask, 1000baseT_Half);
- }
-
- if (!phy_interface_mode_is_8023z(state->interface)) {
- phylink_set(mask, 10baseT_Half);
- phylink_set(mask, 10baseT_Full);
- phylink_set(mask, 100baseT_Half);
- phylink_set(mask, 100baseT_Full);
- }
-
- linkmode_and(supported, supported, mask);
- linkmode_and(state->advertising, state->advertising, mask);
-}
-EXPORT_SYMBOL(b53_phylink_validate);
-
static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
struct phylink_config *config)
{
@@ -1362,6 +1320,13 @@ static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
/* These switches appear to support MII and RevMII too, but beyond
* this, the code gives very few clues. FIXME: We probably need more
* interface modes here.
+ *
+ * According to b53_srab_mux_init(), ports 3..5 can support:
+ * SGMII, MII, GMII, RGMII or INTERNAL depending on the MUX setting.
+ * However, the interface mode read from the MUX configuration is
+ * not passed back to DSA, so phylink uses NA.
+ * DT can specify RGMII for ports 0, 1.
+ * For MDIO, port 8 can be RGMII_TXID.
*/
__set_bit(PHY_INTERFACE_MODE_MII, config->supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_REVMII, config->supported_interfaces);
@@ -1369,7 +1334,12 @@ static void b53_phylink_get_caps(struct dsa_switch *ds, int port,
config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
MAC_10 | MAC_100;
- /* 5325/5365 are not capable of gigabit speeds, everything else is */
+ /* 5325/5365 are not capable of gigabit speeds, everything else is.
+ * Note: the original code also exclulded Gigagbit for MII, RevMII
+ * and 802.3z modes. MII and RevMII are not able to work above 100M,
+ * so will be excluded by the generic validator implementation.
+ * However, the exclusion of Gigabit for 802.3z just seems wrong.
+ */
if (!(is5325(dev) || is5365(dev)))
config->mac_capabilities |= MAC_1000;
@@ -2288,7 +2258,6 @@ static const struct dsa_switch_ops b53_switch_ops = {
.phy_write = b53_phy_write16,
.adjust_link = b53_adjust_link,
.phylink_get_caps = b53_phylink_get_caps,
- .phylink_validate = b53_phylink_validate,
.phylink_mac_link_state = b53_phylink_mac_link_state,
.phylink_mac_config = b53_phylink_mac_config,
.phylink_mac_an_restart = b53_phylink_mac_an_restart,
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index b9d1b4819c5f..a6b339fcb17e 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -58,9 +58,6 @@ struct b53_io_ops {
void (*serdes_link_set)(struct b53_device *dev, int port,
unsigned int mode, phy_interface_t interface,
bool link_up);
- void (*serdes_phylink_validate)(struct b53_device *dev, int port,
- unsigned long *supported,
- struct phylink_link_state *state);
};
#define B53_INVALID_LANE 0xff
@@ -339,9 +336,6 @@ int b53_br_flags(struct dsa_switch *ds, int port,
struct netlink_ext_ack *extack);
int b53_setup_devlink_resources(struct dsa_switch *ds);
void b53_port_event(struct dsa_switch *ds, int port);
-void b53_phylink_validate(struct dsa_switch *ds, int port,
- unsigned long *supported,
- struct phylink_link_state *state);
int b53_phylink_mac_link_state(struct dsa_switch *ds, int port,
struct phylink_link_state *state);
void b53_phylink_mac_config(struct dsa_switch *ds, int port,
diff --git a/drivers/net/dsa/b53/b53_serdes.c b/drivers/net/dsa/b53/b53_serdes.c
index 7e1ec51ab4c9..c39c315afa8e 100644
--- a/drivers/net/dsa/b53/b53_serdes.c
+++ b/drivers/net/dsa/b53/b53_serdes.c
@@ -158,28 +158,6 @@ void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
}
EXPORT_SYMBOL(b53_serdes_link_set);
-void b53_serdes_phylink_validate(struct b53_device *dev, int port,
- unsigned long *supported,
- struct phylink_link_state *state)
-{
- u8 lane = b53_serdes_map_lane(dev, port);
-
- if (lane == B53_INVALID_LANE)
- return;
-
- switch (lane) {
- case 0:
- phylink_set(supported, 2500baseX_Full);
- fallthrough;
- case 1:
- phylink_set(supported, 1000baseX_Full);
- break;
- default:
- break;
- }
-}
-EXPORT_SYMBOL(b53_serdes_phylink_validate);
-
void b53_serdes_phylink_get_caps(struct b53_device *dev, int port,
struct phylink_config *config)
{
diff --git a/drivers/net/dsa/b53/b53_serdes.h b/drivers/net/dsa/b53/b53_serdes.h
index 8fa24f7001aa..f47d5caa7557 100644
--- a/drivers/net/dsa/b53/b53_serdes.h
+++ b/drivers/net/dsa/b53/b53_serdes.h
@@ -117,9 +117,6 @@ void b53_serdes_link_set(struct b53_device *dev, int port, unsigned int mode,
phy_interface_t interface, bool link_up);
void b53_serdes_phylink_get_caps(struct b53_device *dev, int port,
struct phylink_config *config);
-void b53_serdes_phylink_validate(struct b53_device *dev, int port,
- unsigned long *supported,
- struct phylink_link_state *state);
#if IS_ENABLED(CONFIG_B53_SERDES)
int b53_serdes_init(struct b53_device *dev, int port);
#else
diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c
index 7d72f3b293d3..c51b716657db 100644
--- a/drivers/net/dsa/b53/b53_srab.c
+++ b/drivers/net/dsa/b53/b53_srab.c
@@ -496,7 +496,6 @@ static const struct b53_io_ops b53_srab_ops = {
.serdes_config = b53_serdes_config,
.serdes_an_restart = b53_serdes_an_restart,
.serdes_link_set = b53_serdes_link_set,
- .serdes_phylink_validate = b53_serdes_phylink_validate,
#endif
};
--
2.30.2
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