Re: Booting from SATA disables IDE?

[Daniel Egger <de@axiros.com>]

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On 01.04.2005, at 19:04, Jeff Garzik wrote:

> Well, sata_via never touches the VIA PATA side of things.  Probably a 
> config or BIOS error, or similar.

So I though but since since the device is visible on the PCI
bus at all times that strikes me a bit odd.

> Where's the IDE driver output?

...
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with 
idebus=xx
vesafb: probe of vesafb0 failed with error -6
NET: Registered protocol family 1
SCSI subsystem initialized
libata version 1.10 loaded.
sata_via version 1.0
ACPI: PCI interrupt 0000:00:0f.0[B] -> GSI 20 (level, low) -> IRQ 169
sata_via(0000:00:0f.0): routed to hard irq line 11
...

That's all.

One thing is pretty strange though which would support your
guess with the BIOS problem: I modified the Debian initrd
system to forcefully load the via82cxxx module before the
libata and sata_via driver but it still does not work, so
at least it doesn't seem to be the order in which the drivers
are loaded.

One other thing I find somewhat irritating is that the driver
and the PCI setup disagree about the IRQ assignment:

0000:00:0f.1 IDE interface: VIA Technologies, Inc. 
VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 
(prog-if 8a [Master SecP PriP])
         Subsystem: Unknown device 1849:0571
         Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
ParErr- Stepping- SERR- FastB2B-
         Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium 
 >TAbort- <TAbort- <MAbort- >SERR- <PERR-
         Latency: 32
         Interrupt: pin A routed to IRQ 255
         Region 4: I/O ports at fc00 [size=16]
         Capabilities: [c0] Power Management version 2
                 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                 Status: D0 PME-Enable- DSel=0 DScale=0 PME-

egger@karin:~$ cat /proc/interrupts
            CPU0
   0:   18784226    IO-APIC-edge  timer
   1:        256    IO-APIC-edge  i8042
   8:          1    IO-APIC-edge  rtc
   9:          0   IO-APIC-level  acpi
169:      19176   IO-APIC-level  libata
177:       9373   IO-APIC-level  eth0
185:       1291   IO-APIC-level  eth1
193:      39017   IO-APIC-level  eth2
201:          2   IO-APIC-level  ohci1394
209:        532   IO-APIC-level  uhci_hcd, uhci_hcd, uhci_hcd, 
uhci_hcd, ehci_hcd
217:          0   IO-APIC-level  via82cxxx

Servus,
       Daniel

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