On Wed, 2006-02-22 at 16:18 +0100, Stephan Rattai wrote: > Hi list, > > I would like to bother you with a problem that might be a little discrepancy > in the aic79xx driver. I'm not quite sure if this is a aic79xx problem at > all. I have an Adaptec 29320 controller with a LTO (U320) drive connected. I > needed to turn down the speed to 160 which I did via the adapter bios. After > having booted I found the following output in /proc/scsi/aic79xx/1: > > Target 1 Negotiation Settings > User: 160.000MB/s transfers (80.000MHz DT, 16bit) > Goal: 320.000MB/s transfers (160.000MHz DT|IU|RTI, 16bit) > Curr: 320.000MB/s transfers (160.000MHz DT|IU|RTI, 16bit) > > So the speed for the device is set to 320 despite my bios setting (at least > that's what I'm being told through the proc interface). > > With kernel 2.6.13 I get: > > Target 1 Negotiation Settings > User: 160.000MB/s transfers (80.000MHz RDSTRM|DT, 16bit) > Goal: 160.000MB/s transfers (80.000MHz DT, 16bit) > Curr: 160.000MB/s transfers (80.000MHz DT, 16bit) > > Is this a bug or a feature ? It's definitely a bug. What's supposed to happen in 2.6.16-rc3 is that aic79xx picks the parameters out of the bios and places them into the min_period/max_offset variables. could you look at cat /sys/class/spi_transport/target<whatever>/min_period and tell me what it says. Thanks, James - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
