On Sunday, August 21, 2005 10:53 AM, Christoph Hellwig wrote: > This is just a brindup helper because the Fusion hardware does a SAS > remote port to target ID mapping in firmware, in fact the firmware > interface only addresses them using this assigned ID, which is a big > shortcoming in the Fusion interface. Once the more basic things are > dealt with that will go away, similarly to how Fusion won't be able > to use their firmware mapping for FC once they fully support the FC > transport class. > Thats incorrect about the Fusion Firmware Interface. The Sas Device Config pages offers three ways to access this config page. They are: (1) GetNextHandle (2) BusTargetID (3) Handle. This is set in config page pageAddr field - bits 28-31. Lets say you want to know all the devices out in the sas domain that is discovered by this HBA, you do the GetNextHandle method. Bits 0-27 is the FormSpecific. In FormSpecific, you pass 0xFFFF for the first request, then you pass the devHandle for the previous config page to get the next. The 3.02.55 code I sent you did this discovery in mptbase.c, in a function called mpt_sas_get_info. All this info is stored in a link list, that currently is used for CSMI. Eric Moore - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
