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The limition of imx6 internal bus cause fec can't achieve 1G perfomance.
There will be many packages lost because FIFO over run.
This patch enable pause frame flow control.
Before this patch
iperf -s -i 1
TCP window size: 85.3 KByte (default)
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[ 4] local 10.192.242.153 port 5001 connected with 10.192.242.94 port 49773
[ ID] Interval Transfer Bandwidth
[ 4] 0.0- 1.0 sec 6.35 MBytes 53.3 Mbits/sec
[ 4] 1.0- 2.0 sec 3.39 MBytes 28.5 Mbits/sec
[ 4] 2.0- 3.0 sec 2.63 MBytes 22.1 Mbits/sec
[ 4] 3.0- 4.0 sec 1.10 MBytes 9.23 Mbits/sec
ifconfig
RX packets:46195 errors:1859 dropped:1 overruns:1859 frame:1859
After this patch
iperf -s -i 1
[ 4] local 10.192.242.153 port 5001 connected with 10.192.242.94 port 49757
[ ID] Interval Transfer Bandwidth
[ 4] 0.0- 1.0 sec 49.8 MBytes 418 Mbits/sec
[ 4] 1.0- 2.0 sec 50.1 MBytes 420 Mbits/sec
[ 4] 2.0- 3.0 sec 47.5 MBytes 399 Mbits/sec
[ 4] 3.0- 4.0 sec 45.9 MBytes 385 Mbits/sec
[ 4] 4.0- 5.0 sec 44.8 MBytes 376 Mbits/sec
ifconfig
RX packets:2348454 errors:0 dropped:16 overruns:0 frame:0
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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MX6 and mx28 support enhanced DMA descriptor buff to support 1588
ptp. But MX25, MX3x, MX5x can't support enhanced DMA descriptor buff.
Check fec type and choose correct DMA descriptor buff type.
Remove static config CONFIG_FEC_PTP.
ptp function will be auto detected.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds a driver for the FEC(MX6) that offers time
stamping and a PTP haderware clock. Because FEC\ENET(MX6)
hardware frequency adjustment is complex, we have implemented
this in software by changing the multiplication factor of the
timecounter.
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A new file fec_ptp.c will use fec_enet_private to support 1588 PTP
move such structure to common header file fec.h
Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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when the link is 10 Mbps and the mode is RMII, it's necessary
to set FRCONT to 1 in MIIGSK_CFGR to divide the RMII source
clock by 10 in order to support 10 Mbps operations.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move the Freescale drivers into drivers/net/ethernet/freescale/ and
make the necessary Kconfig and Makefile changes.
CC: Sandeep Gopalpet <sandeep.kumar@freescale.com>
CC: Andy Fleming <afleming@freescale.com>
CC: Shlomi Gridish <gridish@freescale.com>
CC: Li Yang <leoli@freescale.com>
CC: Pantelis Antoniou <pantelis.antoniou@gmail.com>
CC: Vitaly Bordug <vbordug@ru.mvista.com>
CC: Dan Malek <dmalek@jlc.net>
CC: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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