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Re: dp83816 ethernet: support reading MAC address from EEPROM
- From: Gary Thomas <gary at mlbassoc dot com>
- To: Andrew Lunn <andrew at lunn dot ch>
- Cc: David Vrabel <dvrabel at arcom dot com>,eCos patches <ecos-patches at ecos dot sourceware dot org>
- Date: Mon, 18 Jul 2005 14:10:39 -0600
- Subject: Re: dp83816 ethernet: support reading MAC address from EEPROM
- Organization: MLB Associates
- References: <42DBC0C5.10600@arcom.com> <20050718200526.GA29741@lunn.ch>
On Mon, 2005-07-18 at 22:05 +0200, Andrew Lunn wrote:
> > -// Map a 32 bit host quantity to little endian
> > -unsigned long
> > -_h2le(unsigned long val)
> > -{
> > - unsigned long res;
> > - unsigned long *addr = &val;
> > - __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (res) : "r" (addr), "m" (*addr));
> > - return res;
> > -}
> > -
> > -// Map a 32 bit little endian quantity to host representation
> > -unsigned long
> > -_le2h(unsigned long val)
> > -{
> > - unsigned long res;
> > - unsigned long *addr = &val;
> > - __asm__ __volatile__ ("lwbrx %0,0,%1" : "=r" (res) : "r" (addr), "m" (*addr));
> > - return res;
> > -}
> > -
> > // Align buffers on a cache boundary
> > #define RxBUFSIZE CYGNUM_DEVS_ETH_MOAB_DP83816_RxNUM*_DP83816_BUFSIZE
> > #define TxBUFSIZE CYGNUM_DEVS_ETH_MOAB_DP83816_TxNUM*_DP83816_BUFSIZE
>
> How about moving this into the PPC arch HAL. It can define a
> CYG_SWAP32 macro.
That's effectively what his patches have done (use the HAL support)
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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