Re: [PATCH] [SCSI] ufs: Assign UTRLBAU = upper_32_ bits(UTRLD base address)

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2012/4/24 Santosh Y <santoshsy@xxxxxxxxx>:
> On Tue, Apr 24, 2012 at 10:26 AM, Namjae Jeon <linkinjeon@xxxxxxxxx> wrote:
>> 2012/4/23 Santosh Y <santoshsy@xxxxxxxxx>:
>>> From: Santosh Yaraganavi <santoshsy@xxxxxxxxx>
>>>
>>> UTP Transfer request list base registers UTRLBA and UTRLBAU
>>> must be assigned, lower-32 and upper-32 bits of UTRLD list
>>> physical base addresses respectively.
>>>
>>> Currently UTRLBAU is being assigned lower-32 bits of UTRLD
>>> physical base address. This will cause an issue with
>>> controllers that can support 64-bit addressing.
>>>
>>> This patch correctly assigns upper-32 bits of UTRLD physical
>>> base address to UTRLBAU.
>> Hi. Santosh.
>> 0 : 9 bits are reserved in UTRLBA of specification. is it considered also ?
>> Thanks.
>>
>
> Hi Namjae,
>
> During memory allocation for UTRDL, it is made sure that the UTRDL
> physical base address is aligned to 1K by checking if the address is
> aligned to PAGE_SIZE. If the address is PAGE_SIZE aligned, then it is
> aligned to 1K. So we don't have to worry about the first 10 bits while
> assigning the base address to UTRLBA.
>
> --
> ~Santosh
Hi. Santosh.
Okay, I understand. Thanks for your reply.

Reviewed-by: Namjae Jeon <linkinjeon@xxxxxxxxx>
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