On Sat, Aug 2, 2008 at 10:53 AM, KueiHuan Chen <kueihuan.chen@xxxxxxxxx> wrote:
> 2008/8/2 Tejun Heo <tj@xxxxxxxxxx>:
>> Mark Lord wrote:
>>> I have exactly zero documentation on those chips,
>>> but they are supposedly AHCI compliant.
>>>
>>> Looking in drivers/ata/ahci.c, one can see that the chips are indeed
>>> supported,
>>> and there the AHCI_HFLAG_NO_PMP is *not* set, so one might expect them
>>> to work
>>> with a port-multiplier already. ?
>>
>> I bet it's more like nobody tried yet. :-P
I don't think we have. Patch I just posted won't
address this issue either.
grant
>
>
> Thanks for your explaining, i had tried it already.
>
> Port multiplier of Silicon image 3726 is not supported from 2.6.24 to
> 2.6.26 with 6121 and 6145 which using ahci.c : (
>
> Here is the test envirement:
>
> Port Multipiler : Silicon image 3726. (Marvell 4140 is not fully
> tested, so i don't listed, but it is the same in arm arch.)
>
> arch/kernel 2.6.24 2.6.25 2.6.26
>
> arm Not Work Not tested Not tested
>
> powerpc Not Work Not tested Not tested
>
> x86_64 Not Work Not Work Not Work
>
>
> Should we need disable 6121/6145 pmp support in ahci.c until it is
> fully supported?
>
> Thanks a lot.
> --------------------
>
> Temporal disable pmp support in 6121/6145 until it is fully supported.
>
> Signed-off-by: KueiHuan Chen <khchen@xxxxxxxxxxxx>
> ---
> diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
> index ef3e552..ef65ac0 100644
> --- a/drivers/ata/ahci.c
> +++ b/drivers/ata/ahci.c
> @@ -420,7 +420,7 @@ static const struct ata_port_info ahci_port_info[] = {
> /* board_ahci_mv */
> {
> AHCI_HFLAGS (AHCI_HFLAG_NO_NCQ | AHCI_HFLAG_NO_MSI |
> - AHCI_HFLAG_MV_PATA),
> + AHCI_HFLAG_MV_PATA | AHCI_HFLAG_NO_PMP),
> .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
> ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
> .pio_mask = 0x1f, /* pio0-4 */
>
>
> ---
> Thanks,
> KueiHuan-Chen
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