linux-toradex.git/drivers/net/phy, branch v4.1.26

net: dp83640: Fix tx timestamp overflow handling.

2016-03-04T15:25:46+00:00

[ Upstream commit 81e8f2e930fe76b9814c71b9d87c30760b5eb705 ]

PHY status frames are not reliable, the PHY may not be able to send them
during heavy receive traffic. This overflow condition is signaled by the
PHY in the next status frame, but the driver did not make use of it.
Instead it always reported wrong tx timestamps to user space after an
overflow happened because it assigned newly received tx timestamps to old
packets in the queue.

This commit fixes this issue by clearing the tx timestamp queue every time
an overflow happens, so that no timestamps are delivered for overflow
packets. This way time stamping will continue correctly after an overflow.

Signed-off-by: Manfred Rudigier 
Acked-by: Richard Cochran 
Signed-off-by: David S. Miller 
Signed-off-by: Sasha Levin

broadcom: fix PHY_ID_BCM5481 entry in the id table

2015-12-15T05:24:31+00:00

[ Upstream commit 3c25a860d17b7378822f35d8c9141db9507e3beb ]

Commit fcb26ec5b18d ("broadcom: move all PHY_ID's to header")
updated broadcom_tbl to use PHY_IDs, but incorrectly replaced 0x0143bca0
with PHY_ID_BCM5482 (making a duplicate entry, and completely omitting
the original). Fix that.

Fixes: fcb26ec5b18d ("broadcom: move all PHY_ID's to header")
Signed-off-by: Aaro Koskinen 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: phy: fixed_phy: handle link-down case

2015-10-03T11:49:17+00:00

[ Upstream 868a4215be9a6d80548ccb74763b883dc99d32a2 in net-next tree,
  will be pushed to Linus very soon. ]

fixed_phy_register() currently hardcodes the fixed PHY link to 1, and
expects to find a "speed" parameter to provide correct information
towards the fixed PHY consumer.

In a subsequent change, where we allow "managed" (e.g: (RS)GMII in-band
status auto-negotiation) fixed PHYs, none of these parameters can be
provided since they will be auto-negotiated, hence, we just provide a
zero-initialized fixed_phy_status to fixed_phy_register() which makes it
fail when we call fixed_phy_update_regs() since status.speed = 0 which
makes us hit the "default" label and error out.

Without this change, we would also see potentially inconsistent
speed/duplex parameters for fixed PHYs when the link is DOWN.

CC: netdev@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Stas Sergeev 
[florian: add more background to why this is correct and desirable]
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

net: phy: fix phy link up when limiting speed via device tree

2015-07-10T16:49:31+00:00

[ Upstream commit eb686231fce3770299760f24fdcf5ad041f44153 ]

When limiting phy link speed using "max-speed" to 100mbps or less on a
giga bit phy, phy never completes auto negotiation and phy state
machine is held in PHY_AN. Fixing this issue by comparing the giga
bit advertise though phydev->supported doesn't have it but phy has
BMSR_ESTATEN set. So that auto negotiation is restarted as old and
new advertise are different and link comes up fine.

Signed-off-by: Mugunthan V N 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

amd-xgbe-phy: Fix initial mode when autoneg is disabled

2015-05-26T23:47:30+00:00

When the ethtool command is used to set the speed of the device while
the device is down, the check to set the initial mode may fail when
the device is brought up, causing failure to bring the device up.

Update the code to set the initial mode based on the desired speed if
auto-negotiation is disabled.

This patch fixes a bug introduced by:
d9663c8c2149 ("amd-xgbe-phy: Use phydev advertising field vs supported")

Signed-off-by: Tom Lendacky 
Signed-off-by: David S. Miller

net: dp83640: fix improper double spin locking.

2015-05-25T22:21:59+00:00

A pair of nested spin locks was introduced in commit 63502b8d0
"dp83640: Fix receive timestamp race condition".

Unfortunately the 'flags' parameter was reused for the inner lock,
clobbering the originally saved IRQ state.  This patch fixes the issue
by changing the inner lock to plain spin_lock without irqsave.

Signed-off-by: Richard Cochran 
Signed-off-by: David S. Miller

net: dp83640: reinforce locking rules.

2015-05-25T22:21:59+00:00

Callers of the ext_write function are supposed to hold a mutex that
protects the state of the dialed page, but one caller was missing the
lock from the very start, and over time the code has been changed
without following the rule.  This patch cleans up the call sites in
violation of the rule.

Signed-off-by: Richard Cochran 
Signed-off-by: David S. Miller

net: dp83640: fix broken calibration routine.

2015-05-25T22:21:59+00:00

Currently, the calibration function that corrects the initial offsets
among multiple devices only works the first time.  If the function is
called more than once, the calibration fails and bogus offsets will be
programmed into the devices.

In a well hidden spot, the device documentation tells that trigger indexes
0 and 1 are special in allowing the TRIG_IF_LATE flag to actually work.

This patch fixes the issue by using one of the special triggers during the
recalibration method.

Signed-off-by: Richard Cochran 
Signed-off-by: David S. Miller

net: phy: bcm7xxx: Fix 7425 PHY ID and flags

2015-05-25T04:16:07+00:00

While adding support for 7425 PHY in the 7xxx PHY driver, the ID that
was used was actually coming from an external PHY: a BCM5461x. Fix this
by using the proper ID for the internal 7425 PHY and set the
PHY_IS_INTERNAL flag, otherwise consumers of this PHY driver would not
be able to properly identify it as such.

Fixes: d068b02cfdfc2 ("net: phy: add BCM7425 and BCM7429 PHYs")
Signed-off-by: Florian Fainelli 
Reviewed-by: Petri Gynther 
Signed-off-by: David S. Miller

net: phy: Make sure phy_start() always re-enables the phy interrupts

2015-05-20T16:22:08+00:00

This is an alternative way of fixing:
 commit db9683fb412d ("net: phy: Make sure PHY_RESUMING state change
                      is always processed")

When the PHY state transitions from PHY_HALTED to PHY_RESUMING, there are
two things we need to do:
1). Re-enable interrupts (and power up the physical link, if powered down)
2). Update the PHY state and net-device based on the link status.

There's no strict reason why #1 has to be done from within the main
phy_state_machine() function. There is a risk that other changes to the
PHY (e.g. setting speed/duplex, which calls phy_start_aneg()) could cause
a subsequent state transition before phy_state_machine() has processed
the PHY_RESUMING state change. This would leave the PHY with interrupts
disabled and/or still in the BMCR_PDOWN/low-power mode.

Moving enabling the interrupts and phy_resume() into phy_start() will
guarantee this work always gets done. As the PHY is already in the HALTED
state and interrupts are disabled, it shouldn't conflict with any work
being done in phy_state_machine(). The downside of this change is that if
the PHY_RESUMING state is ever entered from anywhere else, it'll also have
to repeat this work.

Signed-off-by: Tim Beale 
Signed-off-by: David S. Miller