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SubjectRe: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
On 31 Jul 2007 at 9:50, Andrew Vasquez wrote:

> > On Fri, 27 Jul 2007, Andrew Patterson wrote:
> >
> > > On Thu, 2007-07-26 at 23:23 -0700, Andrew Vasquez wrote:
> > >
> > > > The 33/66/100/133 values refer to the bus-clock speed at which the
> > > > card is operating. As is seen here (although a bit truncated --
> > > > separate issue, I'll try to see if I can reproduce this on one of my
> > > > HPQ rigs), the card is inserted into a PCI-X Mode-2 capable 133MHz
> > > > (bus clock) slot. When operating under this mode, each data-phase
> > > > between two devices is divided into 2 sub-phases, effectively doubling
> > > > the transfer-data-rate to 266Mhz.
> > >
> > > I guess the proper terminology would be 266 MT/s (Mega
> > > Transfers/second). Looking through the PSI_SIG PCI-X 2.0 marketing
> > > blurbs, they use MHz a lot when referring to MT/S. So I would still
> > > consider this to be a minor bug. The user wants to know the transfer
> > > rate, not the actual frequency of the bus. Maybe just print out the
> > > mode used instead, e.g., "PCI-X 266"?
>
> Given PCI-X Mode-2 can run at different bus-clock speeds, how about
> this as an alternative?
>
> PCI-X 266 (133Mhz)

To pick up the idea, why not "133" and "133x2" (DDR, Dual Data Rate)?

>
> it's a bit more descriptive than
>
> PCI-X Mode 2 (133Mhz)
>
> then again, I don't want to beat this thing to death...
>
> ---
>
> diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
> index c488996..26f7e54 100644
> --- a/drivers/scsi/qla2xxx/qla_os.c
> +++ b/drivers/scsi/qla2xxx/qla_os.c
> @@ -283,9 +283,9 @@ qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
> } else {
> strcat(str, "-X ");
> if (pci_bus & BIT_2)
> - strcat(str, "Mode 2");
> + strcat(str, "266");
> else
> - strcat(str, "Mode 1");
> + strcat(str, "133");
> strcat(str, " (");
> strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
> }


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