linux-stable.git/drivers/net/pcs, branch linux-5.10.y

net: pcs-xpcs: depend on MDIO_BUS instead of selecting it

2020-10-16T23:54:11+00:00

The below compile time error can be seen when PHYLIB is configured as a
module.

 ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_read':
 pcs-xpcs.c:(.text+0x29): undefined reference to `mdiobus_read'
 ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_soft_reset.constprop.7':
 pcs-xpcs.c:(.text+0x80): undefined reference to `mdiobus_write'
 ld: drivers/net/pcs/pcs-xpcs.o: in function `xpcs_config_aneg':
 pcs-xpcs.c:(.text+0x318): undefined reference to `mdiobus_write'
 ld: pcs-xpcs.c:(.text+0x38e): undefined reference to `mdiobus_write'
 ld: pcs-xpcs.c:(.text+0x3eb): undefined reference to `mdiobus_write'
 ld: pcs-xpcs.c:(.text+0x437): undefined reference to `mdiobus_write'
 ld: drivers/net/pcs/pcs-xpcs.o:pcs-xpcs.c:(.text+0xb1e): more undefined references to `mdiobus_write' follow

PHYLIB being a module leads to MDIO_BUS being a module as well while the
XPCS is still built-in. What should happen in this configuration is that
PCS_XPCS should be forced to build as module. However, that select only
acts in the opposite way so we should turn it into a depends.

Fix this up by explicitly depending on MDIO_BUS.

Reported-by: Randy Dunlap 
Acked-by: Randy Dunlap  # build-tested
Fixes: 2fa4e4b799e1 ("net: pcs: Move XPCS into new PCS subdirectory")
Signed-off-by: Ioana Ciornei 
Signed-off-by: Jakub Kicinski

net: pcs-lynx: add support for 10GBASER

2020-09-25T02:49:36+00:00

Add support in the Lynx PCS module for the 10GBASE-R mode which is only
used to get the link state, since it offers a single fixed speed.

Signed-off-by: Ioana Ciornei 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: add Lynx PCS module

2020-08-31T19:52:33+00:00

Add a Lynx PCS module which exposes the necessary operations to drive
the PCS using phylink.

The majority of the code is extracted from the Felix DSA driver, which
will be also modified in a later patch, and exposed as a separate module
for code reusability purposes.
As such, this aims at feature and bug parity with the existing Felix DSA
driver, and thus USXGMII, SGMII, QSGMII and 2500Base-X (only w/o in-band
AN) are supported by the Lynx PCS module since these were also supported
by Felix.

The module can only be enabled by the drivers in need and not user
selectable.

Signed-off-by: Ioana Ciornei 
Signed-off-by: David S. Miller

net: pcs: Move XPCS into new PCS subdirectory

2020-08-27T13:55:50+00:00

Create drivers/net/pcs and move the Synopsys DesignWare XPCS into the
new directory. Move the header file into a subdirectory
include/linux/pcs

Start a naming convention of all PCS files use the prefix pcs-, and
rename the XPCS files to fit.

v2:
Add include/linux/pcs

v4:
Fix include path in stmmac.
Remove PCS_DEVICES to avoid new prompts

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