1*61598Sbostic.\" Copyright (c) 1983, 1991, 1993 2*61598Sbostic.\" The Regents of the University of California. All rights reserved. 324222Smckusick.\" 443582Strent.\" %sccs.include.redist.man% 536756Sbostic.\" 6*61598Sbostic.\" @(#)hdh.4 8.1 (Berkeley) 06/05/93 736756Sbostic.\" 847674Scael.Dd 947674Scael.Dt HDH 4 vax 1047674Scael.Os BSD 4.3 1147674Scael.Sh NAME 1247674Scael.Nm hdh 1347674Scael.Nd 1447674Scael.Tn ACC 1547674Scael.Tn IF-11/HDH 1647674Scael.Tn IMP 1747674Scaelinterface 1847674Scael.Sh SYNOPSIS 1947674Scael.Cd "pseudo-device imp" 2047674Scael.Cd "device hdh0 at uba0 csr 166740 vector hdhintr" 2147674Scael.Sh DESCRIPTION 2224222SmckusickThe 2347674Scael.Nm hdh 2447674Scaeldevice provides an 2547674Scael.Tn HDLC 2647674ScaelHost 2747674Scael.Pq Tn HDH 2847674Scaelinterface to an 2947674Scael.Tn IMP . 3047674ScaelIt is normally used when participating 3147674Scaelin the 3247674Scael.Tn DARPA 3347674ScaelInternet. The controller itself is not accessible 3447674Scaelto users, but instead provides the hardware support to the 3547674Scael.Tn IMP 3624222Smckusickinterface described in 3747674Scael.Xr imp 4 . 3847674ScaelThe configuration entry for the 3947674Scael.Tn IMP 4047674Scaelmust also include the 4147674Scael.Em pseudo-device 4247674Scaelas shown above in the 4347674Scael.Sx SYNOPSIS . 4447674Scael.Sh DIAGNOSTICS 4547674Scael.Bl -diag 4647674Scael.It hdh%d: not alive. 4724222SmckusickThe initialization routine was entered even though the device 4824222Smckusickdid not autoconfigure. This indicates a system problem. 4947674Scael.Pp 5047674Scael.It hdh%d: cannot get chan %d uba resources. 5147674ScaelInsufficient 5247674Scael.Tn UNIBUS 5347674Scaelresources existed to initialize the device. 5447674ScaelThis is likely to be a shortage of 5547674Scael.Tn UNIBUS 5647674Scaelmapping registers. 5747674Scael.Pp 5847674Scael.It hdh%d: LINE UP. 5947674ScaelThis indicates that both the 6047674Scael.Tn HDLC 6147674Scaeland 6247674Scael.Tn HDH 6347674Scaelprotocols have declared the 6447674Scaellink to the 6547674Scael.Tn IMP 6647674Scaelalive. 6747674Scael.Pp 6847674Scael.It hdh%d: LINE DOWN. 6947674ScaelThis indicates that the link to the 7047674Scael.Tn IMP 7147674Scaelhas died. 7247674Scael.Pp 7347674Scael.It hdh%d: TIMEOUT. 7447674Scael.It hdh%d: HOST DATA ERROR. 7547674Scael.It hdh%d: IMP SEQUENCE ERROR. 7647674Scael.It hdh%d: HOST SEQUENCE ERROR. 7747674ScaelThese errors indicate that an 7847674Scael.Tn HDH 7947674Scaelprotocol error has been detected. 8047674Scael.Pp 8147674Scael.It hdh%d: cannot get supervisor cmnd buffer. 8224222SmckusickThis error indicates that an 8347674Scael.Em mbuf 8447674Scaelcould not be allocated to send a command to the 8547674Scael.Tn IF-11/HDH . 8647674Scael.El 8747674Scael.Pp 8824222SmckusickAny other error message from hdh%d: indicates a serious error 8947674Scaeldetected by either the driver or the 9047674Scael.Tn IF-11/HDH 9147674Scaelfirmware. 9247674Scael.Sh SEE ALSO 9347674Scael.Xr netintro 4 9447674Scael.Sh HISTORY 9547674ScaelThe 9647674Scael.Nm 9747674Scaeldriver appeared in 9847674Scael.Bx 4.3 . 99