Name
ata_id_xfermask — 
     Compute xfermask from the given IDENTIFY data
 
Synopsis
| unsigned long ata_id_xfermask ( | const u16 * id ); | 
 
Arguments
- id
- 
     IDENTIFY data to compute xfer mask from
     
Description
   Compute the xfermask for this device. This is not as trivial
   as it seems if we must consider early devices correctly.
FIXME
   pre IDE drive timing (do we care ?).
RETURNS
   Computed xfermask