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Re: bug about MPC8260 FEC driver?
- From: "Gary D. Thomas" <gary dot thomas at mind dot be>
- To: he_hai_yang <he_hai_yang at 163 dot com>
- Cc: eCos Discussion <ecos-discuss at sources dot redhat dot com>
- Date: 02 Mar 2003 05:22:00 -0700
- Subject: Re: [ECOS] bug about MPC8260 FEC driver?
- References: <3E619C82.000045.08869@bj244.163.com>
On Sat, 2003-03-01 at 22:54, he_hai_yang wrote:
> in file ...\ecos\packages\devs\eth\powerpc\quicc2\current\src\if_fec.c
> founction fec_eth_init():
>
> there are code :
> if (cache_state) {
> HAL_DCACHE_DISABLE();
> HAL_DCACHE_INVALIDATE_ALL();
> }
>
> i think it should be:
> if (cache_state) {
> HAL_DCACHE_SYNC();
> HAL_DCACHE_DISABLE();
> }
>
> If we call HAL_DCACHE_DISABLE() here, some modified in the ram will lose. In our test, once system goes here, the value of net_mem (in support.c) will change to 0.
>
What version of the code are you referring to? I made major
changes in how the data cache is handled in this driver a
long time ago (back in October, 2002).
Try updating to the latest CVS and see if you still have problems.
--
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| Mind: Embedded Linux and eCos Development |
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| Gary Thomas email: gary dot thomas at mind dot be |
| Mind ( http://mind.be ) tel: +1 (970) 229-1963 |
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