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
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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