The QCA955X is affected by a hardware bug which causes link-loss of the
SGMII link between SoC and PHY. This happens on change of link-state or
speed.
It is not really known what causes this bug. It definitely occurs when
using a AR8033 Gigabit Ethernet PHY.
Qualcomm solves this Bug in a similar fashion. We need to apply the fix
on a per-device base via platform-data as performing the fixup work will
break connectivity in case the SGMII interface is connected to a Switch.
This bug was first proposed to be fixed by Sven Eckelmann in 2016.
https://patchwork.ozlabs.org/patch/604782/
Based-on-patch-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
Signed-off-by: David Bauer <mail@david-bauer.net>
The driver is written in such a way that with a board defintion that
connects a fixed phy, mdio, and switch in a certain way, a kernel oops could
result because of lack of previously probed mdio bus.
This commit allows for easier debugging in this case by casting the
correct blame with serial console messages.
Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
It's a little noisier but makes it obvious when the ar7240 switch was
connected to the MDIO bus, and to which phy device (or the failure
to do so).
Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
NB: Error only appears with ag71xx debug messages and dynamic printk
enabled. This is probably why no one has caught it before.
Previously phy probe debug messages used old (now wrong) functions
to get the phy name for printing. There was also the chance of
a NULL pointer in the event no phy_device was found.
Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>
With this change, the timestamp variable is only used in ag71xx_check_dma_stuck. Small tx speedup.
Based on a Qualcomm commit. ag->timestamp = jiffies was not replaced with netif_trans_update(dev) because of this quote:
It should be noted that after this series several instances
of netif_trans_update() are useless (if they occur in
.ndo_start_xmit and driver doesn't set LLTX flag -- stack already
did an update).
From: http://lists.openwall.net/netdev/2016/05/03/87
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Qualcomm claims this improves the D-cache footprint. Origina commit message below:
From: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Date: Fri, 7 Jun 2013 10:57:28 -0500
Subject: [ag71xx] cluster/align structs for cache perf
Cluster the frequently used, per-packet structures in ag71xx near
to each other, and cacheline-align them. Some other re-ordering
occurred to move "warmer" structures near the per-packet structures.
Signed-off-by: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Because the oldest supported kernel version on the ar71xx target is 4.4,
the condition that the kernel version is smaller than 4.2.0 is always
false. Remove the obsolete check from ag71xx_main.c to clean up the code
a bit.
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
Because the oldest supported kernel version on the ar71xx target is 4.4,
the condition that the kernel version is smaller than 3.15.0 is always
false. Remove the obsolete checks from the target specific source files
to clean up the code a bit.
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
Commit c312cef223 ("ar71xx: spi-rb4xx fix.") replaced the clk_enable() call
with clk_prepare_enable() to meet the common clock framework requirements.
However it did not change the clk_disable() call in the error patch which
thus leads to imbalance.
Fix the code by using the correct counterpart of clk_prepare_enable() in both
places.
Fixes: c312cef223 ("ar71xx: spi-rb4xx fix.")
Signed-off-by: Gabor Juhos <juhosg@freemail.hu>
Qualcomm claims this reduces cache misses. Original commit message below:
From: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Date: Tue, 11 Jun 2013 12:18:46 -0500
Subject: [ag71xx] reduce NAPI weight
In an attempt to increase our cache warmth, we are decreasing NAPI.
This increases the warmth of the reused SKBs.
Signed-off-by: Ben Menchaca <ben.menchaca@qca.qualcomm.com>
Signed-off-by: Rosen Penev <rosenp@gmail.com>
The motivation for this was misguided. It turns out tuning the NAPI weight could be useful for testing purposes. Therefore reverting.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
This reverts commit 13e5e47369.
This commit causes a severe regression in LAN->WAN routing performance
for several devices. This appears to be caused by the extra requirement
to validate the SKB checksum early in the rx path, which the ethernet
hardware does not do
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This add support for kernel 4.9 to the ar71xx target.
It was compile tested with the generic, NAND and mikrotik subtarget.
Multiple members of the community tested it on their boards and did not
report any major problem so far.
Especially the NAND part received some changes to adapt to the new
kernel APIs. The serial driver hack used for the Arduino Yun was not
ported because the kernel changed there a lot.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
On a TL-WN710N, this patch increases iperf performance from ~92.5 to ~93.5 mbps. Keep in mind the WN710N is a 100mbps device. I expect greater numbers from gigabit devices.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
ag71xx_ethtool_set_ringparam() will return an uninitialized value on
success.
Found-by: Coverity Scan #1330877
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Teltonika RUT900 is a Router with LTE dual SIM, WiFi, 4x Ethernet
ports, I/O, RS232, RS485, GPS.
The device ist based on a Atheros AR9344 rev 3,
Specifications:
- 560/450/225 MHz (CPU/DDR/AHB)
- 128 MB of RAM
- 16 MB of FLASH
- Serial Console header on a Card Board edge connector
- 4x 10/100 Mbps Ethernet (3x LAN, 1x WAN)
- 2.4 GHz Wifi
- 2x external, detachable Wifi antennas
- LTE Modem Huawei ME909u-521 (Also other Modem seen)
- 2x LTE antennas
- 1x GPS antenna
- 7x LED, 1x button
- 1x USB Connector
- 1x Serial RS232
- 1x Serial RS485
- 1x MicroSD Card
The GPL sources of the device are available at www.teltonika.lt/gpl/
and are based on OpenWRT Barrier Breaker (14.07)
Running from tftp:
The Router starts into the uboot Webupdater if the Button ist pressed
more than 3 seconds, if no Network cable is attached it starts the
uboot serial console, from there the router loads the firmware image
via tftpboot from 192.168.1.2:firmware.bin (the router has the
192.168.1.1). With bootm the loaded image will be booted.
Signed-off-by: Steffen Weinreich <steve@weinreich.org>
Remove the wget2nand script, drop the need for manual installation,
use sysupgrade instead.
There are now two different NAND images, one for 64 MiB flashes, the
other for >= 128 MiB
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Commit af79fdbe4a changed the code to use tx_nbits for dual SPI tx
transfers, however the SPI stack only allows this when the device mode
includes the relevant bit as well
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This board is very old and unlikely to still be relevant today. Support
for it contains a significant amount of device specific baggage which is
worth getting rid of.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Fix the incorrect usage of ar934x_nfc_write_page and ar934x_nfc_write_page_raw.
Add *page* in the argument list and remove the local variable.
Signed-off-by: Paul Wassi <p.wassi@gmx.at>
In new kernels we should use clk_prepare_enable instead of clk_enable
since clk_enable does not make proper initialization that leads
to rise WARN_ON messages and not working spi bus on the device.
Signed-off-by: Sergey Sergeev <adron@yapic.net>
Should fix LAN speed issues on some devices. This is an updated version
of the previously reverted commit with the same name.
It improves the check for MACs connected to a built-in switch
Signed-off-by: Felix Fietkau <nbd@nbd.name>
