On Thu, 2007-07-26 at 23:23 -0700, Andrew Vasquez wrote:
> On Thu, 26 Jul 2007, Andrew Patterson wrote:
>
> > On Thu, 2007-07-26 at 15:36 +0200, Ulrich Windl wrote:
> > > Hi,
> > >
> > > I have a question: The Qlogic ISP2422 chip is said to handle PCI-X 266MHz. So does
> > > the HP Itanium2 server rx6600. Basically that was the reason to select that
> > > server. The FC-HBA is in a 266 MHz capable slot. However when booting SLES10 SP1
> > > for IA64, the logs say:
>
> There's a mixup here in terminology... The QLA2460 card which you
> have does in fact support 'PCI-X 266'...
>
> > > <6>QLogic Fibre Channel HBA Driver
> > > <6>GSI 49 (level, low) -> CPU 3 (0x0300) vector 51
> > > <6>ACPI: PCI Interrupt 0000:0f:01.0[A] -> GSI 49 (level, low) -> IRQ 51
> > > <6>qla2xxx 0000:0f:01.0: Found an ISP2422, irq 51, iobase 0xc0000000b0040000
> > > [...]
> > > <6>qla2xxx 0000:0f:01.0: LOOP UP detected (4 Gbps).
> > > <6>qla2xxx 0000:0f:01.0: Topology - (F_Port), Host Loop address 0x0
> > > <6>scsi0 : qla2xxx
> > > <6>qla2xxx 0000:0f:01.0:
> > > <4> QLogic Fibre Channel HBA Driver: 8.01.07-k3
> > > <4> QLogic HP AB378-60001 -
> > > <4> ISP2422: PCI-X Mode 2 (133 MH4.00.26 [IP] @ 0000:0f:01.0 hdma+, host#=0,
> > > fw=4.00.26 [IP]
>
> 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"?
>
> > > <5> Vendor: HP Model: HSV200 Rev: 6100
> > > <5> Type: RAID ANSI SCSI revision: 02
> > > <5> 0:0:0:0: Attached scsi generic sg0 type 12
> > >
> > > Now does Linux support the speed of 266 MHz, and is it just displayed incorrectly,
> > > or doesn't Linux support the speed of 266MHz yet?
> >
> > This is a bug in the driver. The lookup table only goes to 133 MHz.
> >
> > static char *pci_bus_modes[] = {
> > "33", "66", "100", "133",
> >
> > The same problem exists in the scsi_misc tree.
>
> Regards,
> Andrew Vasquez
--
Andrew Patterson
Hewlett-Packard Company
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
