saeed bishara wrote:
Hi,
I think the 6th port is for the SEMB(Sata Enclosure Management
Bridge) device, this device reportssignature with lbam=0x3c and lbah
0xc3, but the linux classifies it as a disk:
if (((tf->lbam == 0) && (tf->lbah == 0)) ||
((tf->lbam == 0x3c) && (tf->lbah == 0xc3))) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
DPRINTK("found ATA device by sig\n");
return ATA_DEV_ATA;
Can you print the signature of the device on that port?
Anyway, the 0x3C, 0xC3 signature should be classifies as a SEMB device
and not a disk according to the SATA standard.
I haven't actually checked that signature but that's probably the same
class code mix up described for PM in the classification function. For
the time being, libata is just ignoring the extra port. It probably
should be exported as a SCSI device without HLD attached (/dev/sgX
only). I'll try that once hotplug stuff settles.
Thanks.
--
tejun
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