Mark Knecht <[email protected]> [11-01-21 20:36]:
> On Fri, Jan 21, 2011 at 11:16 AM, Volker Armin Hemmann
> <[email protected]> wrote:
> <SNIP>
> >>
> >> I'm happy to be corrected (by Volker I'm sure) but that's my guess
> >> as to what you're seeing.
> >
> > you are confusing bios calls and bios programming chips as.... also - is
> > there
> > any good reason to use IDE mode? Any? At all?
>
> I don't believe I'm 'confusing bios calls with bios programming'. The
> BIOS can do whatever it wants to in programming the chips as long as
> grub can still find the kernel. After grub finds the kernel the kernel
> is free to override whatever chip programming the BIOS has done and
> reprogram the chips as it sees best.
>
> I think the issue meino possibly has is that he likely didn't include
> an Int13 type driver in the kernel or most likely his system would
> have booted like it did in the _very_ old days.
>
> I agree that there isn't any good reason I know of to use IDE mode
> unless the other modes the BIOS provides don't work.
>
> I cannot get into my Asus BIOS at the moment, but as I remember it
> Asus gave me something like
>
> IDE
> AHCI
> AHCI + compatibility
>
> IIRC I had to use the last one to get mine to boot but I may be wrong
> about that. I only mention this as meino is also using Asus so he
> might look for similar options.
>
> - Mark
>
Hi,
I switched the BIOS from IDE (kernel is using AHCI) to AHCI (kernel
uses AHCI). The dmesg says (I did a dmesg | grep -i ahci now, previous
check was done with dmesg | grep AHCI only):
solfire:/root>dmesg | grep -i ahci
ahci 0000:00:11.0: version 3.0
*0* ahci 0000:00:11.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19
*1* ahci 0000:00:11.0: irq 78 for MSI/MSI-X
*2* ahci 0000:00:11.0: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x3f impl SATA
mode
*3* ahci 0000:00:11.0: flags: 64bit ncq sntf ilck pm led clo pmp pio slum part
scsi0 : ahci
scsi1 : ahci
scsi2 : ahci
scsi3 : ahci
scsi4 : ahci
scsi5 : ahci
ahci 0000:07:00.0: PCI INT A -> GSI 44 (level, low) -> IRQ 44
*4* ahci 0000:07:00.0: AHCI 0001.0000 32 slots 2 ports 3 Gbps 0x3 impl SATA mode
*5* ahci 0000:07:00.0: flags: 64bit ncq pm led clo pmp pio slum part
*6* ahci 0000:07:00.0: setting latency timer to 64
scsi6 : ahci
scsi7 : ahci
For me bare eye this looks like the kernel ha switched all seven ports
to AHCI. Lines marked with "*n*" are still a riddle to me. May be
Volker will give us some enlightment?
Why is line *1* of the first block missing in the second block,
Volker? Why is line *2* talking about "0x3f" while line *4* is using
"0x3", Volker? Why differ line *5* from line *3*, Volker? What does
all these flags mean?
I find this interesting:
http://www.linuxquestions.org/questions/linux-hardware-18/6-tips-for-improving-hard-drive-performance-835034/
Best regards,
mcc
