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

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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.

>
> Reported-by: Rene De Jong <rene.dejong@xxxxxxx>
> Signed-off-by: Santosh Yaraganavi <santoshsy@xxxxxxxxx>
> Reviewed-by: Vinayak Holikatti <vinholikatti@xxxxxxxxx>
> ---
>  drivers/scsi/ufs/ufshcd.c |    6 +++---
>  1 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 52b96e8..ea32ade 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -1032,11 +1032,11 @@ static int ufshcd_initialize_hba(struct ufs_hba *hba)
>                return -EIO;
>
>        /* Configure UTRL and UTMRL base address registers */
> -       writel(hba->utrdl_dma_addr,
> -              (hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_BASE_L));
>        writel(lower_32_bits(hba->utrdl_dma_addr),
> +              (hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_BASE_L));
> +       writel(upper_32_bits(hba->utrdl_dma_addr),
>               (hba->mmio_base + REG_UTP_TRANSFER_REQ_LIST_BASE_H));
> -       writel(hba->utmrdl_dma_addr,
> +       writel(lower_32_bits(hba->utmrdl_dma_addr),
>               (hba->mmio_base + REG_UTP_TASK_REQ_LIST_BASE_L));
>        writel(upper_32_bits(hba->utmrdl_dma_addr),
>               (hba->mmio_base + REG_UTP_TASK_REQ_LIST_BASE_H));
> --
> 1.7.5.4
>
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