linux-stable.git/include/linux/mdio.h, branch v4.9.321

net: mdio: introduce a shutdown method to mdio device drivers

2021-10-09T11:25:58+00:00

[ Upstream commit cf9579976f724ad517cc15b7caadea728c7e245c ]

MDIO-attached devices might have interrupts and other things that might
need quiesced when we kexec into a new kernel. Things are even more
creepy when those interrupt lines are shared, and in that case it is
absolutely mandatory to disable all interrupt sources.

Moreover, MDIO devices might be DSA switches, and DSA needs its own
shutdown method to unlink from the DSA master, which is a new
requirement that appeared after commit 2f1e8ea726e9 ("net: dsa: link
interfaces with the DSA master to get rid of lockdep warnings").

So introduce a ->shutdown method in the MDIO device driver structure.

Signed-off-by: Vladimir Oltean 
Reviewed-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

net: mdio: Fix lockdep falls positive splat

2016-04-12T01:15:48+00:00

MDIO devices can be stacked upon each other. The current code supports
two levels, which until recently has been enough for a DSA mdio bus on
top of another bus. Now we have hardware which has an MDIO mux in the
middle.

Define an MDIO MUTEX class with three levels.

Signed-off-by: Andrew Lunn 
Signed-off-by: David S. Miller

mdio: Abstract device_remove() and device_free()

2016-01-07T19:31:27+00:00

Make device_free and device_remove operations in the mdio device
structure, so the core code does not need to differentiate between
phy devices and generic mdio devices.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

mdio: Add support for mdio drivers.

2016-01-07T19:31:27+00:00

Not all devices on an MDIO bus are PHYs. Meaning not all MDIO drivers
are PHY drivers. Add support for generic MDIO drivers.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

phy: Move phy specific bus match into phy_device

2016-01-07T19:31:27+00:00

Matching a driver to a device has both generic parts, and parts which
are specific to PHY devices. Move the PHY specific parts into
phy_device.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

phy: Move PHY PM operations into phy_device

2016-01-07T19:31:27+00:00

The MDIO PM operations are really PHY device PM operations. So move
them into phy_device. This will be needed when we support devices on
the mdio bus which are not PHYs.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

phy: Add API for {un}registering an mdio device to a bus.

2016-01-07T19:31:26+00:00

Rather than have drivers directly manipulate the mii_bus structure,
provide and API for registering and unregistering devices on an MDIO
bus, and performing lookups.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

phy: Add an mdio_device structure

2016-01-07T19:31:26+00:00

Not all devices attached to an MDIO bus are phys. So add an
mdio_device structure to represent the generic parts of an mdio
device, and place this structure into the phy_device.

Signed-off-by: Andrew Lunn 
Signed-off-by: David S. Miller

mdio: Move mdiobus_read/write operatings into mdio.h

2016-01-07T19:31:24+00:00

These are logically MDIO operations, not phy operations, so move them
into the mdio header.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

mdio: unused ethtool functions

2013-12-26T18:29:35+00:00

Use it or lose it.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller