kernel/linux.git/drivers/net/phy/phy-core.c, branch v5.6.17

net: phy: don't crash in phy_read/_write_mmd without a PHY driver

2020-01-20T09:08:20+00:00

The APIs can be used by Ethernet drivers without actually loading a PHY driver. This may become more widespread in the future with 802.3z compatible MAC PCS devices being locally driven by the MAC driver when configuring for a PHY mode with in-band negotiation. Check that drv is not NULL before reading from it. Signed-off-by: Alex Marginean Signed-off-by: Vladimir Oltean Signed-off-by: David S. Miller

net: phy: add helpers phy_(un)lock_mdio_bus

2019-11-25T18:47:00+00:00

Add helpers to make locking/unlocking the MDIO bus easier. Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller

net: phy: avoid NPE if read_page/write_page callbacks are not available

2019-10-18T16:57:55+00:00

Currently there's a bug in the module subsystem [0] preventing load of the PHY driver module on certain systems (as one symptom). This results in a NPE on such systems for the following reason: Instead of the correct PHY driver the genphy driver is loaded that doesn't implement the read_page/write_page callbacks. Every call to phy_read_paged() et al will result in a NPE therefore. In parallel to fixing the root cause we should make sure that this one and maybe similar issues in other subsystems don't result in a NPE in phylib. So let's check for the callbacks before using them and warn once if they are not available. [0] https://marc.info/?t=157072642100001&r=1&w=2 Signed-off-by: Heiner Kallweit Signed-off-by: David S. Miller

ethtool: Add support for 400Gbps (50Gbps per lane) link modes

2019-10-15T22:02:30+00:00

Add support for 400Gbps speed, link modes of 50Gbps per lane Signed-off-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller

net: phy: extract pause mode

2019-10-05T01:11:08+00:00

Extract the update of phylib's software pause mode state from genphy_read_status(), so that we can re-use this functionality with PHYs that have alternative ways to read the negotiation results. Tested-by: tinywrkb Reviewed-by: Andrew Lunn Signed-off-by: Russell King Signed-off-by: David S. Miller

net: phy: add phy_speed_down_core and phy_resolve_min_speed

2019-08-14T00:14:06+00:00

phy_speed_down_core provides most of the functionality for phy_speed_down. It makes use of new helper phy_resolve_min_speed that is based on the sorting of the settings[] array. In certain cases it may be helpful to be able to exclude legacy half duplex modes, therefore prepare phy_resolve_min_speed() for it. v2: - rename __phy_speed_down to phy_speed_down_core Signed-off-by: Heiner Kallweit Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski

net: phy: add __set_linkmode_max_speed

2019-08-14T00:14:06+00:00

We will need the functionality of __set_linkmode_max_speed also for linkmode bitmaps other than phydev->supported. Therefore split it. v2: - remove unused parameter from __set_linkmode_max_speed Signed-off-by: Heiner Kallweit Reviewed-by: Andrew Lunn Signed-off-by: Jakub Kicinski

net: phy: add phy_modify_paged_changed

2019-08-12T04:24:32+00:00

Add helper function phy_modify_paged_changed, behavios is the same as for phy_modify_changed. Signed-off-by: Heiner Kallweit Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: phy: Add support for 100BaseT1 and 1000BaseT1

2019-05-23T00:46:28+00:00

Add link modes for 100Mbps and 1Gbps over a single pair. Signed-off-by: Andrew Lunn Signed-off-by: David S. Miller

net: phy: improve pause handling

2019-05-04T04:47:55+00:00

When probing the phy device we set sym and asym pause in the "supported" bitmap (unless the PHY tells us otherwise). However we don't know yet whether the MAC supports pause. Simply copying phy->supported to phy->advertising will trigger advertising pause, and that's not what we want. Therefore add phy_advertise_supported() that copies all modes but doesn't touch the pause bits. In phy_support_(a)sym_pause we shouldn't set any bits in the supported bitmap because we may set a bit the PHY intentionally disabled. Effective pause support should be the AND-combined PHY and MAC pause capabilities. If the MAC supports everything, then it's only relevant what the PHY supports. If MAC supports sym pause only, then we have to clear the asym bit in phydev->supported. Copy the pause flags only and don't touch the modes, because a driver may have intentionally removed a mode from phydev->advertising. Signed-off-by: Heiner Kallweit Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller