[geeks] IPCop and pfSense...

[Shannon Hendrix]

On Apr 18, 2008, at 14:33 , Joshua D. Boyd wrote:

> On Fri, 2008-04-18 at 12:58 -0400, nate at portents.com wrote:
>>> There are units that stick right in the IDC scoket on the MB,  
>>> which means
>>> *no* cabling.
>>
>> Tempting, but it's really hard to determine which cheap adapters  
>> truly
>> support DMA and aren't really just PIO.  The Addonics CF - SATA HDD
>> Adapter is only $32 and is the same form factor as a 2.5" notebook  
>> hard
>> drive, seems like a good way to go:
>>
>> http://www.addonics.com/products/flash_memory_reader/adsahdcf.asp
>
> How do you determine which CF cards properly support DMA?  Booting  
> from
> CF has been very annoying for me.

My company is in the same boat.

The guys I'm working with need to boot from CF cards on little  
adapters, and FreeBSD keeps kernel panicking because the "drive" says  
it can do DMA, but it can't and the kernel goes nuts.

We could force them to use PIO, but not all BIOS let's you do that at  
boot, and it seems silly that you can't easily determine what to buy  
for full DMA support.

I wonder too, do all CF cards support DMA and it is just the adapter  
that is the issue, or does it require a certain revision of the CF  
standard too?

-- 
"Where some they sell their dreams for small desires."