linux-toradex.git/include/linux/stmmac.h, branch v6.3-rc3

net: stmmac: do not stop RX_CLK in Rx LPI state for qcs404 SoC

2023-01-30T07:21:25+00:00

Currently in phy_init_eee() the driver unconditionally configures the PHY
to stop RX_CLK after entering Rx LPI state. This causes an LPI interrupt
storm on my qcs404-base board.

Change the PHY initialization so that for "qcom,qcs404-ethqos" compatible
device RX_CLK continues to run even in Rx LPI state.

Signed-off-by: Andrey Konovalov 
Signed-off-by: David S. Miller

net: stmmac: Power up SERDES after the PHY link

2022-12-05T09:44:42+00:00

The Tegra MGBE ethernet controller requires that the SERDES link is
powered-up after the PHY link is up, otherwise the link fails to
become ready following a resume from suspend. Add a variable to indicate
that the SERDES link must be powered-up after the PHY link.

Signed-off-by: Revanth Kumar Uppala 
Signed-off-by: Jon Hunter 
Signed-off-by: David S. Miller

stmmac: intel: remove unused 'has_crossts' flag

2022-08-18T03:40:52+00:00

The 'has_crossts' flag was not used anywhere in the stmmac driver,
removing it from both header file and dwmac-intel driver.

Signed-off-by: Wong Vee Khee 
Reviewed-by: Kurt Kanzenbach 
Link: https://lore.kernel.org/r/20220817064324.10025-1-veekhee@gmail.com
Signed-off-by: Jakub Kicinski

net: stmmac: switch to use interrupt for hw crosstimestamping

2022-07-18T10:14:35+00:00

Using current implementation of polling mode, there is high chances we
will hit into timeout error when running phc2sys. Hence, update the
implementation of hardware crosstimestamping to use the MAC interrupt
service routine instead of polling for TSIS bit in the MAC Timestamp
Interrupt Status register to be set.

Cc: Richard Cochran 
Signed-off-by: Wong Vee Khee 
Signed-off-by: David S. Miller

net: stmmac: disable Split Header (SPH) for Intel platforms

2022-05-01T12:20:03+00:00

Based on DesignWare Ethernet QoS datasheet, we are seeing the limitation
of Split Header (SPH) feature is not supported for Ipv4 fragmented packet.
This SPH limitation will cause ping failure when the packets size exceed
the MTU size. For example, the issue happens once the basic ping packet
size is larger than the configured MTU size and the data is lost inside
the fragmented packet, replaced by zeros/corrupted values, and leads to
ping fail.

So, disable the Split Header for Intel platforms.

v2: Add fixes tag in commit message.

Fixes: 67afd6d1cfdf("net: stmmac: Add Split Header support and enable it in XGMAC cores")
Cc:  # 5.10.x
Suggested-by: Ong, Boon Leong 
Signed-off-by: Mohammad Athari Bin Ismail 
Signed-off-by: Wong Vee Khee 
Signed-off-by: Tan Tee Min 
Signed-off-by: David S. Miller

net: stmmac: Add platform level debug register dump feature

2021-11-30T11:57:58+00:00

dwmac-qcom-ethqos currently exposes a mechanism to dump rgmii registers
after the 'stmmac_dvr_probe()' returns. However with commit
5ec55823438e ("net: stmmac: add clocks management for gmac driver"),
we now let 'pm_runtime_put()' disable the clocks before returning from
'stmmac_dvr_probe()'.

This causes a crash when 'rgmii_dump()' register dumps are enabled,
as the clocks are already off.

Since other dwmac drivers (possible future users as well) might
require a similar register dump feature, introduce a platform level
callback to allow the same.

This fixes the crash noticed while enabling rgmii_dump() dumps in
dwmac-qcom-ethqos driver as well. It also allows future changes
to keep a invoking the register dump callback from the correct
place inside 'stmmac_dvr_probe()'.

Fixes: 5ec55823438e ("net: stmmac: add clocks management for gmac driver")
Cc: Joakim Zhang 
Cc: David S. Miller 
Signed-off-by: Bhupesh Sharma 
Signed-off-by: David S. Miller

net: stmmac: Calculate CDC error only once

2021-11-24T04:11:05+00:00

The clock domain crossing error (CDC) is calculated at every fetch of Tx or Rx
timestamps. It includes a division. Especially on arm32 based systems it is
expensive. It also requires two conditionals in the hotpath.

Add a compensation value cache to struct plat_stmmacenet_data and subtract it
unconditionally in the RX/TX functions which spares the conditionals.

The value is initialized to 0 and if supported calculated in the PTP
initialization code.

Suggested-by: Thomas Gleixner 
Signed-off-by: Kurt Kanzenbach 
Link: https://lore.kernel.org/r/20211122111931.135135-1-kurt@linutronix.de
Signed-off-by: Jakub Kicinski

net: stmmac: ptp: update tas basetime after ptp adjust

2021-07-05T17:16:17+00:00

After adjusting the ptp time, the Qbv base time may be the past time
of the new current time. dwmac5 hardware limited the base time cannot
be set as past time. This patch add a btr_reserve to store the base
time get from qopt, then calculate the base time and reset the Qbv
configuration after ptp time adjust.

Signed-off-by: Xiaoliang Yang 
Signed-off-by: David S. Miller

net: stmmac: add mutex lock to protect est parameters

2021-07-05T17:16:17+00:00

Add a mutex lock to protect est structure parameters so that the
EST parameters can be updated by other threads.

Signed-off-by: Xiaoliang Yang 
Signed-off-by: David S. Miller

net: stmmac: option to enable PHY WOL with PMT enabled

2021-06-29T18:34:48+00:00

The current stmmac driver WOL implementation will enable MAC WOL
if MAC HW PMT feature is on. Else, the driver will check for
PHY WOL support. There is another case where MAC HW PMT is
enabled but the platform still goes for the PHY WOL option.
E.g, Intel platform are designed for PHY WOL but not MAC WOL
although HW MAC PMT features are enabled.

Introduce use_phy_wol platform data to select PHY WOL
instead of depending on HW PMT features. Set use_phy_wol
will disable the plat->pmt which currently used to
determine the system to wake up by MAC WOL or PHY WOL.

Signed-off-by: Ling Pei Lee 
Signed-off-by: David S. Miller