1.\" $NetBSD: njata.4,v 1.2 2006/09/10 21:53:36 wiz Exp $ 2.\" 3.\" Copyright (c) 2006 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by ITOH Yasufumi. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. All advertising materials mentioning features or use of this software 18.\" must display the following acknowledgement: 19.\" This product includes software developed by the NetBSD 20.\" Foundation, Inc. and its contributors. 21.\" 4. Neither the name of The NetBSD Foundation nor the names of its 22.\" contributors may be used to endorse or promote products derived 23.\" from this software without specific prior written permission. 24.\" 25.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35.\" POSSIBILITY OF SUCH DAMAGE. 36.\" 37.Dd September 7, 2006 38.Dt NJATA 4 39.Os 40.Sh NAME 41.Nm njata 42.Nd Workbit NinjaATA-32 CardBus IDE controller driver 43.Sh SYNOPSIS 44.Cd "njata* at cardbus? function ?" 45.Cd "njata* at cardbus? function ? flags 1 # with wait 1" 46.Sh DESCRIPTION 47The 48.Nm 49driver provides support for the following 50Workbit Bus-Master CardBus IDE controller chips: 51.Pp 52.Bl -tag -width "NinjaATA-32Bi" -offset indent 53.It NinjaATA-32Bi 54CardBus / PCMCIA dual mode IDE controller 55.Pq Dq DuoATA . 56This controller is mainly used for portable drives. 57This driver supports the CardBus mode. 58.It NPATA-32 59CardBus IDE controller. 60This controller is widely used for CardBus CompactFlash adapters. 61.El 62.Pp 63These controllers are capable of bus-mastering 64for ATA PIO transfer. 65The 66.Nm 67driver uses the bus-mastering PIO transfer 68unless transfer buffer is unaligned, 69and significantly reduces CPU usage for PIO-only ATA devices 70compared with usual PIO transfer. 71.Sh CONFIGURATION 72The optional flags parameter is the 73.Dq wait 74value for ATA transfers. 75Some combinations of host and device may fail without flags parameter or 76.Tn flags 0 . 77In this case try wait values between 78.Tn flags 1 79and 80.Tn flags 3 . 81Smaller wait values should be faster. 82Too long waits may cause DMA error. 83.Sh SEE ALSO 84.Xr ata 4 , 85.Xr atapi 4 , 86.Xr cardbus 4 , 87.Xr intro 4 , 88.Xr wd 4 , 89.Xr wdc 4 90.Sh HISTORY 91The 92.Nm 93device driver first appeared in 94.Nx 5.0 . 95.Sh AUTHORS 96.An ITOH Yasufumi Aq itohy@NetBSD.org 97