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Re: port-mac68k/2921 (Some SCSI devices do not work in interrupt driven xfer mode)
The following reply was made to PR port-mac68k/2921; it has been noted by GNATS.
From: Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost>
Cc: bouyer%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost,
Subject: Re: port-mac68k/2921 (Some SCSI devices do not work in interrupt
driven xfer mode)
Date: Thu, 27 Mar 2008 21:02:53 +0100
At 13:36 Uhr +0000 27.3.2008, dholland%NetBSD.org@localhost wrote:
>Synopsis: Some SCSI devices do not work in interrupt driven xfer mode
>Is this issue still relevant? The world's changed quite a lot in the
>interim (e.g. scsipi...)
Like Scott said, it's a hardware issue, in that case with the ncrscsi
driver, AFAICS. NetBSD/mac68k has two drivers for the 53c80 still, because
each of them works with different devices (they both do not have a man
page, is that right?). The MD code hasn't changed much throughout the years.
That said, the sbc driver has the flags
# SBC_PDMA 0x01 Use PDMA for polled transfers
# SBC_INTR 0x02 Allow SCSI IRQ/DRQ interrupts
# SBC_RESELECT 0x04 Allow disconnect/reselect
They are not per-device, though, but globally.
"It's never straight up and down" (DEVO)
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