.\"	$OpenBSD: mpt.4,v 1.7 2005/10/20 21:44:42 jmc Exp $
.\"
.\" Copyright (c) 2003 Wasabi Systems, Inc.
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.\" Written by Jason R. Thorpe for Wasabi Systems, Inc.
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.Dd February 25, 2004
.Dt MPT 4
.Os
.Sh NAME
.Nm mpt
.Nd LSI Fusion-MPT SCSI and FibreChannel host adapter driver
.Sh SYNOPSIS
.Cd "mpt* at pci?"
.Cd "scsibus* at mpt?"
.Sh DESCRIPTION
The
.Nm
driver provides support
for the LSI Logic Fusion-MPT family of
.Tn SCSI
and
.Tn Fibre Channel
controllers:
.Pp
.Bl -bullet -compact -offset indent
.It
53c1020
.Pq Single Ultra320 Tn SCSI
.It
53c1030
.Pq Dual Ultra320 Tn SCSI
.It
FC909
.Pq 1Gb/s Tn Fibre Channel
.It
FC909A
.Pq Dual 1Gb/s Tn Fibre Channel
.It
FC919
.Pq 2Gb/s Tn Fibre Channel
.It
FC929
.Pq Dual 2Gb/s Tn Fibre Channel
.It
Emulated in VMWare ESX Server 2
.El
.Pp
The LSI Logic SCSI and Fibre Channel controllers contain firmware that presents
a multiprotocol service layer based on the LSI Logic Fusion-MPT architecture.
The firmware isolates the host drivers from the hardware and controls the
device side of the message passing interface to the host device drivers.
The firmware manages all phases of an I/O request and optimizes the interrupt
management for the system.
For Fibre Channel, the firmware also manages all FC-2 through FC-4 services,
which minimizes the amount of Fibre Channel unique services required with the
host driver.
.Pp
The MPI (Message Passing Interface) definition includes a register-level
transport mechanism and a messaging protocol.
A system doorbell and message queues define the MPI transport interface.
Inbound Message Frames (MF), allocated in host memory, identify I/O operations
to be performed by the IO Controller (IOC).
These operations are queued on the Request Queue by the host driver.
Outbound Message Frames, also in host memory, track I/O operations as they
complete.
These frames are queued on the Reply Queue by the IOC.
A doorbell mechanism is provided for IOC configuration, reset management,
and IOC status.
.Sh SEE ALSO
.Xr cd 4 ,
.Xr ch 4 ,
.Xr intro 4 ,
.Xr pci 4 ,
.Xr scsi 4 ,
.Xr sd 4 ,
.Xr siop 4 ,
.Xr st 4 ,
.Xr uk 4
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 3.5 .
.Sh AUTHORS
The
.Om
driver was ported from
.Nx
by Milos Urbanek, Kenneth R. Westerback and Marco Peereboom.