mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
146 lines
4.8 KiB
Groff
146 lines
4.8 KiB
Groff
.\"
|
|
.\" Copyright (c) 2000 Michael Smith
|
|
.\" Copyright (c) 2000 BSDi
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd April 10, 2000
|
|
.Dt TWE 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm twe
|
|
.Nd 3ware Escalade ATA RAID adapter driver
|
|
.Sh SYNOPSIS
|
|
.Cd device pci
|
|
.Cd device twe
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for the Escalade 3W-5x00 series of ATA RAID
|
|
controllers. These devices support 2, 4 or 8 ATA disk drives and provide
|
|
RAID0 (striping) and RAID1 (mirroring) functionality.
|
|
.Sh DIAGNOSTICS
|
|
Controller initialisation phase:
|
|
.Bl -diag
|
|
.It twe%d: microcontroller not ready
|
|
.El
|
|
.Pp
|
|
The controller's onboard CPU is not reporting that it is ready; this may be
|
|
due to either a board or system failure. Initialisation has failed.
|
|
.Bl -diag
|
|
.It twe%d: no attention interrupt
|
|
.It twe%d: can't drain AEN queue
|
|
.It twe%d: reset not reported
|
|
.It twe%d: controller errors detected
|
|
.It twe%d: can't drain response queue
|
|
.It twe%d: reset %d failed, trying again
|
|
.El
|
|
.Pp
|
|
The controller is not responding correctly to the driver's attempts to reset
|
|
and initialise it. This process is retried several times.
|
|
.Bl -diag
|
|
.It twe%d: can't initialise controller, giving up
|
|
.El
|
|
.Pp
|
|
Several attempts to reset and initialise the controller have failed;
|
|
initialisation has failed and the driver will not attach to this controller.
|
|
.Pp
|
|
Driver initialisation/shutdown phase:
|
|
.Bl -diag
|
|
.It twe%d: register window not available
|
|
.It twe%d: can't allocate register window
|
|
.It twe%d: can't allocate parent DMA tag
|
|
.It twe%d: can't allocate interrupt
|
|
.It twe%d: can't set up interrupt
|
|
.It twe%d: can't establish configuration hook
|
|
.El
|
|
.Pp
|
|
A resource allocation error occurred while initialising the driver;
|
|
initialisation has failed and the driver will not attach to this
|
|
controller.
|
|
.Bl -diag
|
|
.It twe%d: can't detect attached units
|
|
.El
|
|
.Pp
|
|
Fetching the list of attached units failed; initialisation has failed.
|
|
.Bl -diag
|
|
.It twe%d: error fetching capacity for unit %d
|
|
.It twe%d: device_add_child failed
|
|
.It twe%d: bus_generic_attach returned %d
|
|
.El
|
|
.Pp
|
|
Creation of the disk devices failed; attachment of one or more units may have
|
|
been aborted.
|
|
.Bl -diag
|
|
.It twe%d: command failed - 0x%x
|
|
.It twe%d: command failed - controller wedged
|
|
.El
|
|
.Pp
|
|
A command was reported as failed by the controller, or could not be delivered to
|
|
the controller.
|
|
.Bl -diag
|
|
.It twe%d: host interrupt
|
|
.El
|
|
.Pp
|
|
The controller has signalled a host interrupt. This serves an unknown purpose
|
|
and is ignored.
|
|
.Bl -diag
|
|
.It twe%d: command interrupt
|
|
.El
|
|
.Pp
|
|
The controller has signalled a command interrupt. This is not used, and will
|
|
be disabled.
|
|
.Bl -diag
|
|
.It twe%d: error polling for signalled AENs
|
|
.El
|
|
.Pp
|
|
The controller has reported that one or more status messages are ready for the
|
|
driver, but attempting to fetch one of these has returned an error.
|
|
.Bl -diag
|
|
.It twe%d: AEN queue overflow, lost AEN <%s>
|
|
.El
|
|
.Pp
|
|
A status message was retrieved from the controller, but there is no more room
|
|
to queue it in the driver. The message is lost.
|
|
.Bl -diag
|
|
.It twe%d: missing expected status bits %s
|
|
.It twe%d: unexpected status bits %s
|
|
.El
|
|
.Pp
|
|
A check of the controller's status bits indicates an unexpected condition.
|
|
.Sh BUGS
|
|
Much of the controller's status cannot currently be interpreted due to
|
|
lack of information from 3ware.
|
|
.Pp
|
|
The controller cannot handle I/O transfers that are not aligned to a 512-byte
|
|
boundary. In order to support raw device access from user-space, the driver will
|
|
perform alignment fixup on non-aligned data. This process is inefficient, and
|
|
thus in order to obtain best performance user-space applications accessing the
|
|
device should do so with aligned buffers.
|
|
.Sh AUTHORS
|
|
The
|
|
.Nm
|
|
driver and manpage were written by
|
|
.An Michael Smith
|
|
.Aq msmith@FreeBSD.org .
|