NAME
wdsc —
Western Digital WD33c93 SCSI Bus
Interface Controller
SYNOPSIS
wdsc* at hpc? offset ?
DESCRIPTION
The
wdsc driver provides an abstraction layer between the SCSI
hardware found in multitudinous SGI machines (including Personal Iris series,
Indigo, Indy, Challenge S, Indigo2, and Challenge M) and the machine
independent SCSI drivers described in
scsibus(4).
In addition to sending the required SCSI commands to target devices on the SCSI
bus, the
wdsc driver deals with DMA, device interrupts,
sync/async negotiation, and target disconnects/reconnects.
SEE ALSO
scsibus(4),
sgimips/hpc(4)
HISTORY
Wayne Knowles ported the sgimips incarnation of the
wdsc
driver from the amiga and atari ports. It first appeared in
NetBSD 1.6.