Re: port-mac68k/2921 (Some SCSI devices do not work in interrupt driven xfer mode)

[Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost>]

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>
To: gnats-bugs%NetBSD.org@localhost
Cc: bouyer%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost, 
dholland%NetBSD.org@localhost,
        paul%whooppee.com@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.
 
        hauke
 
 --
 "It's never straight up and down"     (DEVO)