Re: [ECOS] DP83816

["Giri" <giri at jntu dot net>]

Hi Nick,
   Thank you very much for your valueble inputs.

    in the same file(moab_eth_dp83816.inl) i am finding some functions
which are lookiing like Power PC specific. can u clarify me whether
those are Power PC specific or can be used for i386-PC also.

// Map a 32 bit host quantity to little endian
unsigned long
_h2le(unsigned long val)
{

    unsigned long res;
#ifdef GGB
    unsigned long *addr = &val;
    __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (res) : "r" (addr), "m"
(*addr));
#endif
    return res;

}

// Map a 32 bit little endian quantity to host representation
unsigned long
_le2h(unsigned long val)
{

    unsigned long res;
#ifdef GGB
    unsigned long *addr = &val;
    __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (res) : "r" (addr), "m"
(*addr));
#endif
    return res;

}


if above functions are Power PC specific can you please suggest me similar
functions for i386-PC

Thanks Regards
Giri
> "Giri" <giri@jntu.net> writes:
>
>> Hai Nick,
>>     as you suggested for the Kevin i tried creating the new package for
>> DP83816. and one .cdl and one .inl for making it support for the
>> i386-PC target.
>>     Still i am not able to initialize the network properly. i am facing
>> the following problem
>> 1. after starting the redboot it will go and initialize all the NIC's
>> 2. while initializing our NIC it is not finding the base address of the
>> NIC so it is returning with no device found.
>>        in the code i found the place where it is failing.
>>         that is in if_dp83816.c
>>             dp83816_init()
>>             {
>>                     .....
>>                     ........
>>                     if (!base) return false;  // No device found
>>
>>             }
>> 4. for other microcontrollers like i82559 this base address is assigned
>> as
>> follows
>>             cyg_pci_configure_device(&dev_info);
>>             p_i82559->io_address = dev_info.base_map[1];
>>
>>
>>         here io_address is the base adderss.
>> 3. my doubght is how we are managing this problem in the PPC version
>
> The full version of the code in dp83816_init() is:
>
>     CYGHWR_NS_DP83816_PLF_INIT(dp);
>     base = dp->base;
>     if (!base) return false;  // No device found
>
> That macro CYGHWR_NS_DP83816_PLF_INIT() does all the hard work. It is
> in the MOAB board ethernet package and is just a call to a function
> defined there. There is nothing PowerPC specific about it, so you
> can probably just copy it over.
>
>
>
> --
> Nick Garnett                    eCos Kernel Architect
> http://www.ecoscentric.com      The eCos and RedBoot experts
>


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