Hi Xin,
Xin Xie wrote:
I am new to the Coldfire uClinux platform. Currently I have a m5329evb
board, and using the 2.6.23-uc0 kernel and 4.1.1 m68-elf-gcc.
I did some stress test on the board. One interesting finding is under
the ping flood (ping –f board), the kernel went to crash. I also tested
Can you send the crash console dump?
the 2.6.17-uc1 kernel, the kernel did not crash but become very slow,
and I measured a 24ms worst case to wake up a user process from a char
driver.
I am suspecting if the Ethernet driver has DMA support on m5329 uClinux.
I checked both kernel, and could not find any DMA options available. Can
anyone provide any insights?
The FEC ethernet driver is DMA driven. That is the only way it
can work with that ethernet device. It doesn't use the generic
ColdFire DMA engine though. See the code for it in drivers/net/fec.c
Regards
Greg
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: [EMAIL PROTECTED]
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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