[ECOS] Leon3 compatible with LAN91C111?

[Tapio Koskinen]

Hi all,

I am using a Leon3 processor on Altera's Nios II Development Kit, 
Stratix Edition. The board has a LAN91C111 Ethernet controller and I am 
trying to get server_test.c working. There was no target for such a 
configuration, so I made a new target to ecos.db and added the following 
packages to it:
	CYGPKG_HAL_SPARC
	CYGPKG_HAL_SPARC_LEON3
	CYGPKG_DEVS_ETH_SMSC_LAN91CXX
	CYGPKG_DEVS_ETH_SPARC_LEON3

When trying to run the program it said "No 91Cxx signature found". It 
seems there was an endianess problem, and after removing all calls to 
CYG_CPU_TO_LE16 and CYG_LE16_TO_CPU in 
devs/eth/smsc/lan91cxx/current/src/if_lan91cxx.c and smsc_lan91cxx.h it 
found the signature.

However it prints "auto-negotiation failed" even though "link ok" led is 
lit in the controller after aneg-bit is written to RPCR-register. Also 
there is a yellow balloon tip in Windows saying 10Mbps link established.

After lan91cxx_start completes these lines are printed:
lan91cxx_can_send
lan91cxx_can_send: ENGINE RESTART: tcr 0x0000
lan91cxx_poll
lan91cxx_TxEvent
lan91cxx_TxEvent:START: fifo 0000 ints 3100
lan91cxx_TxEvent: ENGINE RESTART: tcr 0x0000 eph 0x0000 ints 0x3100
lan91cxx_TxEvent:END: fifo 0000 ints 3302
lan91cxx_isr
lan91cxx_TxEvent
lan91cxx_TxEvent:START: fifo 0000 ints 3100
lan91cxx_TxEvent: ENGINE RESTART: tcr 0x0000 eph 0x0000 ints 0x3100
lan91cxx_TxEvent:END: fifo 0000 ints 3302
lan91cxx_TxEvent

So it keeps executing lan91cxx_TxEvent over and over. TXENA-bit can't 
stay up but there is no error in EPH_STATUS-register. And what is the 
server_test/eCos trying to send anyways? Server_test should just wait 
for a connection. I have set a static IP address so DHCP shouldn't be in 
use. I also tried unloading DNS-package but it didn't help. What should 
I try to do next?

I have tried using versions 1.19 and 1.20 of 91C111's drivers, although 
in 1.20 calls to CYGACC_CALL_IF_DELAY_US(x) couldn't be linked even if I 
added "#include <cyg/hal/hal_if.h>" to if_lan91cxx.c. So I had to change 
those calls back to HAL_DELAY_US(x).

Thanks in advance

Tapio

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