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Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
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From:
Ulrich Windl <ulrich.windl@...>
To: Andrew Vasquez <andrew.vasquez@...>
Cc: Ulrich Windl <ulrich.windl@...>, <linux-kernel@...>
Subject:
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
Date: Wednesday, August 1, 2007 - 2:13 am
On 31 Jul 2007 at 9:50, Andrew Vasquez wrote:
quoted text
> > 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)?
quoted text
> > 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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Messages in current thread:
Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Ulrich Windl
, (Thu Jul 26, 9:36 am)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Andrew Patterson
, (Thu Jul 26, 6:03 pm)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Andrew Vasquez
, (Fri Jul 27, 2:23 am)
[PATCH] qla2xxx: allocate enough space for the full PCI desc...
, Andrew Vasquez
, (Wed Aug 1, 6:13 pm)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Andrew Patterson
, (Fri Jul 27, 11:46 am)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Ulrich Windl
, (Mon Jul 30, 2:40 am)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Andrew Vasquez
, (Fri Jul 27, 12:11 pm)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Andrew Vasquez
, (Tue Jul 31, 12:50 pm)
Re: Q: PCI-X @ 266MHz on HP rx6600 (Qlogic 4Gb FC HBA)
, Ulrich Windl
, (Wed Aug 1, 2:13 am)
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