1.\" $NetBSD: njata.4,v 1.9 2018/01/13 23:43:46 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.\" 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.Bl -tag -width "NinjaATA-32Bi" -offset indent 45.It NinjaATA-32Bi 46CardBus / PCMCIA dual mode IDE controller 47.Pq Dq DuoATA . 48This controller is mainly used for portable drives. 49This driver supports the CardBus mode. 50.It NPATA-32 51CardBus IDE controller. 52This controller is widely used for CardBus CompactFlash adapters. 53.El 54.Pp 55These controllers are capable of bus-mastering 56for ATA PIO transfer. 57The 58.Nm 59driver uses the bus-mastering PIO transfer 60unless transfer buffer is unaligned, 61and significantly reduces CPU usage for PIO-only ATA devices 62compared with usual PIO transfer. 63.Sh CONFIGURATION 64The optional flags parameter is the 65.Dq wait 66value for ATA transfers. 67Some combinations of host and device may fail without flags parameter or 68.Cd flags 0x00 . 69In this case try adding wait values like 70.Cd flags 0x01 71or 72.Cd flags 0x11 73(the wait parameter is composed of two 4-bit values). 74Smaller wait values should be faster. 75Too long waits may cause transfer errors. 76.Sh SEE ALSO 77.Xr ata 4 , 78.Xr atapi 4 , 79.Xr cardbus 4 , 80.Xr intro 4 , 81.Xr wd 4 , 82.Xr wdc 4 83.Sh HISTORY 84The 85.Nm 86device driver first appeared in 87.Nx 4.0 . 88.Sh AUTHORS 89.An ITOH Yasufumi 90