20 Mar
2008
20 Mar
'08
2:44 p.m.
Antonello Lombardinilo wrote:
I just now:
- switched to Intel IXDPG425 board (to have a "standard" board reference);
- downloaded and compiled u-Boot 1.3.2 with NetConsole support;
Even in this scenario the communication is slow !
Take a look at your ethernet driver (I think cpu/ixp/npe.c). The eth_halt and eth_init functions are called before each transfer, even for single character.
In npe_halt:
debug("%s\n", __FUNCTION__);
/* Delay to give time for recovery of mbufs */ for (i = 0; i < 100; i++) { npe_poll(p_npe->eth_id); udelay(100); }
The delay seems strictly correlated to the slowness you report. Check the npe_init function, too. If the ethernet is reinitialized after each transfer, the result is a very slow connection.
Best regards, Stefano Babic
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