AHCI driver port update - working with hot-plug

[Hasso Tepper]

Matthew Dillon wrote:
>     It's fairly easy to get it wrong and for the system to not be able
> to find the root mount, in which case carefully specifying it on the
> kernel's mountroot> line should get you into single-user.

AFAICS it just continues - ie if you wanted to boot into multi-user, 
you'll get this one.

>     I am particularly interested in systems which have a separate,
>     traditional non-AHCI ATA device as well as one or more AHCI
> devices, I'd like to know that AHCI picks up the AHCI devices and NATA
> picks up the non-AHCI devices properly.

Seems to work here on my laptop. I'm not brave enough to do any stress 
tests though ;).

. ..
atapci0: <Intel ATA controller> port 
0x18e0-0x18ef,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
ata0: <ATA channel 0> on atapci0
acd0: DVDR <MATSHITADVD-RAM UJ-852/RB02> at ata0-master UDMA33
ata1: <ATA channel 1> on atapci0
match generic sata
match generic sata
ahci0: <AHCI-PCI-SATA> port 
0x1c00-0x1c1f,0x1c20-0x1c23,0x1c28-0x1c2f,0x1c24-0x1c27,0x1c30-0x1c37 mem 
0xf8426000-0xf84267ff irq 10 at device 31.2 on pci0
match generic sata
ahci0: AHCI 1.1 capabilities 
0xe710ff82<S64A,NCQ,SSNTF,SALP,SAL,SCLO,PMD,SSC,PSC,CCCS>, 3 ports, 32 
tags/port, gen 1 (1.5Gbps)
ahci0.0: Found DISK "WDC WD5000BEVT-00ZAT0 01.01A01" serial="     
WD-WXN109NH2596"
ahci0.0: tags=32/32 satacaps=1f06 satafeat=004c capacity=476940.02MB
ahci0.0: f85=7469 f86=bc09 f87=6163 WC=enabled RA=enabled SEC=frozen
ahci0.2: No device detected
. ..


-- 
Hasso Tepper