Promise PDC20319 4 ports SATA and the RAID1

[Søren Schmidt]

Claude B. wrote:

> kernel: atapci0: <Promise PDC20319 SATA150 controller> port
> 0xb400-0xb47f,0xb800-0xb80f,0xbc00-0xbc3f mem
> 0xfc960000-0xfc97ffff,0xfc99f000-0xfc99ffff irq 27 at device 5.0 on pci2
> kernel: atapci0: failed: rid 0x20 is memory, requested 4
> kernel: ata2: channel #0 on atapci0
> kernel: ata3: channel #1 on atapci0
> kernel: ata4: channel #2 on atapci0
> kernel: ata5: channel #3 on atapci0
> 
> What means this kernel message :"atapci0: failed: rid 0x20 is memory,
> requested 4" and how to make sure the RAID1 works fine?

Its just a warning from the kernel (which IMHO shouldn't be there).
The reason is that "normal" ATA controllers has port space there and the 
generic part of ATA probes it as part of the generic probe code. Later 
in the probe where ATA knows it deals with a Promise chip it also knows 
how to use that resource as memory space.

-- 

-Søren