Subject: Re: scsibus capabilities.
To: Matt Thomas <>
From: Manuel Bouyer <>
List: tech-kern
Date: 05/15/2002 21:12:57
On Wed, May 15, 2002 at 10:11:51AM -0700, Matt Thomas wrote:
> Analagous to the pcibus_attach_hook in the MI pci code, I'd
> to propose that a scsibus_attach_hook be added.
> This would be a function in the scsipi_channel structure that
> if non-null would be called in scsiconf.c:scsibusattach().
> The reason for asking for this is that I'm writing a driver
> for a new SCSI HBA which is fronted by a embedded processor
> (like an I2O IOP but not an I2O IOP) and it presents an
> abstracted HBA interface to the host driver.  It also tells
> things about each SCSI bus (SE, LVD, HVD, FC) that really
> should be printed and/or obtained in the scsibusattach.
> The alternative would be to add a chan_cap field to the
> scsipi_channel and various SCSIBUS_CAP_ bits to describe the
> capability of the channels and then let scsibusattach print
> those out.

Do we want to print the capability, or the current mode (or both) ?
LVD adapters can switch between LVD and SE depending on terminators
on the bus.

Manuel Bouyer <>