1.\" $NetBSD: njata.4,v 1.6 2008/04/30 13:10:54 martin 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.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd September 7, 2006 31.Dt NJATA 4 32.Os 33.Sh NAME 34.Nm njata 35.Nd Workbit NinjaATA-32 CardBus IDE controller driver 36.Sh SYNOPSIS 37.Cd "njata* at cardbus? function ?" 38.Cd "njata* at cardbus? function ? flags 0x01 # with wait 0x01" 39.Sh DESCRIPTION 40The 41.Nm 42driver provides support for the following 43Workbit Bus-Master CardBus IDE controller chips: 44.Pp 45.Bl -tag -width "NinjaATA-32Bi" -offset indent 46.It NinjaATA-32Bi 47CardBus / PCMCIA dual mode IDE controller 48.Pq Dq DuoATA . 49This controller is mainly used for portable drives. 50This driver supports the CardBus mode. 51.It NPATA-32 52CardBus IDE controller. 53This controller is widely used for CardBus CompactFlash adapters. 54.El 55.Pp 56These controllers are capable of bus-mastering 57for ATA PIO transfer. 58The 59.Nm 60driver uses the bus-mastering PIO transfer 61unless transfer buffer is unaligned, 62and significantly reduces CPU usage for PIO-only ATA devices 63compared with usual PIO transfer. 64.Sh CONFIGURATION 65The optional flags parameter is the 66.Dq wait 67value for ATA transfers. 68Some combinations of host and device may fail without flags parameter or 69.Tn flags 0x00 . 70In this case try adding wait values like 71.Tn flags 0x01 72or 73.Tn flags 0x11 74(the wait parameter is composed of two 4bit values). 75Smaller wait values should be faster. 76Too long waits may cause transfer errors. 77.Sh SEE ALSO 78.Xr ata 4 , 79.Xr atapi 4 , 80.Xr cardbus 4 , 81.Xr intro 4 , 82.Xr wd 4 , 83.Xr wdc 4 84.Sh HISTORY 85The 86.Nm 87device driver first appeared in 88.Nx 4.0 . 89.Sh AUTHORS 90.An ITOH Yasufumi Aq itohy@NetBSD.org 91