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authorRussell King <rmk+kernel@armlinux.org.uk>2020-01-31 18:17:58 +0000
committerRussell King <rmk+kernel@armlinux.org.uk>2020-02-28 12:36:52 +0000
commita8892b3234b7e78da7ab39ceff7dcf77c865b0c5 (patch)
tree956cdf7bb767aa8fb5b33340c37d5416c8d943fc
parent01bdf229398abbff42f4791e91b0157885c7ee74 (diff)
net: phylink: pcs: add 802.3 clause 45 helpers
Implement helpers for PCS accessed via the MII bus using 802.3 clause 45 cycles for 10GBASE-R. Only link up/down is supported, 10G full duplex is assumed. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--drivers/net/phy/phylink.c30
-rw-r--r--include/linux/phylink.h2
2 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index ef6ebbf4a462..32ce907408ef 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -2267,4 +2267,34 @@ void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs)
}
EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_an_restart);
+#define C45_ADDR(d,a) (MII_ADDR_C45 | (d) << 16 | (a))
+void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
+ struct phylink_link_state *state)
+{
+ struct mii_bus *bus = pcs->bus;
+ int addr = pcs->addr;
+ int stat;
+
+ stat = mdiobus_read(bus, addr, C45_ADDR(MDIO_MMD_PCS, MDIO_STAT1));
+ if (stat < 0) {
+ state->link = false;
+ return;
+ }
+
+ state->link = !!(stat & MDIO_STAT1_LSTATUS);
+ if (!state->link)
+ return;
+
+ switch (state->interface) {
+ case PHY_INTERFACE_MODE_10GBASER:
+ state->speed = SPEED_10000;
+ state->duplex = DUPLEX_FULL;
+ break;
+
+ default:
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(phylink_mii_c45_pcs_get_state);
+
MODULE_LICENSE("GPL v2");
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index c7d7e3d37876..dc27dd341ebd 100644
--- a/include/linux/phylink.h
+++ b/include/linux/phylink.h
@@ -334,4 +334,6 @@ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs,
const struct phylink_link_state *state);
void phylink_mii_c22_pcs_an_restart(struct mdio_device *pcs);
+void phylink_mii_c45_pcs_get_state(struct mdio_device *pcs,
+ struct phylink_link_state *state);
#endif