Re: [PATCH-RFC] Promise TX4 implement hw-bug workaround

[Jeff Garzik <jeff@garzik.org>]

Alexander Sabourenkov wrote:
> Jeff Garzik wrote:
>> BTW, looking at the Promise code I see
>>
>>> cam_con.h:
>>> /* for ASIC bug, limit the last element of SG byteCount must < 32
>>> Dword */
>>> #define SG_COUNT_ASIC_BUG       32
>>> //#define SG_COUNT_ASIC_BUG     128
>>     and in the code itself
>>
>>> /* check PRD table, last element <= (32 Dword), fix ASIC bug */
>> (though the code obviously uses SG_COUNT_ASIC_BUG==32, as the first
>> paste indicates)
>>
>> so it seems like Promise first used 128 (32 dwords), but then backed
>> down to 32 (8 dwords).
>>
> 
> Which version is this define from?
> 
> Both versions that are available now from their website define it at 41*4:

Mikael Pettersson wrote:
> You're looking at the old pdc-ultra2 driver. The newer unified
> sataii150-300 driver (v1.01.0.23) upped the value to 41*4.


I was looking at pdc-ulsata2_1.00.0.15.tgz, which was the latest driver 
that Promise's website gave me to when I listed "SATA300 TX4" as my product.

Sounds like that is outdated information, thanks for the correction!

	Jeff