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+.\" $NetBSD: njata.4,v 1.9 2018/01/13 23:43:46 wiz Exp $
+.\"
+.\" Copyright (c) 2006 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by ITOH Yasufumi.
+.\"
+.\" 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. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``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 FOUNDATION OR CONTRIBUTORS
+.\" 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.
+.\"
+.Dd September 7, 2006
+.Dt NJATA 4
+.Os
+.Sh NAME
+.Nm njata
+.Nd Workbit NinjaATA-32 CardBus IDE controller driver
+.Sh SYNOPSIS
+.Cd "njata* at cardbus? function ?"
+.Cd "njata* at cardbus? function ? flags 0x01 # with wait 0x01"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides support for the following
+Workbit Bus-Master CardBus IDE controller chips:
+.Bl -tag -width "NinjaATA-32Bi" -offset indent
+.It NinjaATA-32Bi
+CardBus / PCMCIA dual mode IDE controller
+.Pq Dq DuoATA .
+This controller is mainly used for portable drives.
+This driver supports the CardBus mode.
+.It NPATA-32
+CardBus IDE controller.
+This controller is widely used for CardBus CompactFlash adapters.
+.El
+.Pp
+These controllers are capable of bus-mastering
+for ATA PIO transfer.
+The
+.Nm
+driver uses the bus-mastering PIO transfer
+unless transfer buffer is unaligned,
+and significantly reduces CPU usage for PIO-only ATA devices
+compared with usual PIO transfer.
+.Sh CONFIGURATION
+The optional flags parameter is the
+.Dq wait
+value for ATA transfers.
+Some combinations of host and device may fail without flags parameter or
+.Cd flags 0x00 .
+In this case try adding wait values like
+.Cd flags 0x01
+or
+.Cd flags 0x11
+(the wait parameter is composed of two 4-bit values).
+Smaller wait values should be faster.
+Too long waits may cause transfer errors.
+.Sh SEE ALSO
+.Xr ata 4 ,
+.Xr atapi 4 ,
+.Xr cardbus 4 ,
+.Xr intro 4 ,
+.Xr wd 4 ,
+.Xr wdc 4
+.Sh HISTORY
+The
+.Nm
+device driver first appeared in
+.Nx 4.0 .
+.Sh AUTHORS
+.An ITOH Yasufumi