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If sysflags tells us we have an internal HP-IB interface, don't bother

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reading the DIO device ID at select code 7, but rather hard-wire the ID
to the IHPIB ID.  This prevents us reading what might look like a valid
ID to another device when IHPIB is present.  (IHPIB doesn't always return
a correct device ID, grumble.)
This commit is contained in:
thorpej 1998-07-01 22:46:29 +00:00
parent 06fc3488e2
commit a1e53914d7
1 changed files with 9 additions and 2 deletions
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11
sys/arch/hp300/dev/dio.c
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@ -1,4 +1,4 @@
/* $NetBSD: dio.c,v 1.12 1998/01/12 18:30:49 thorpej Exp $ */
/* $NetBSD: dio.c,v 1.13 1998/07/01 22:46:29 thorpej Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
@ -144,7 +144,14 @@ dioattach(parent, self, aux)
bzero(&da, sizeof(da));
da.da_bst = HP300_BUS_SPACE_DIO;
da.da_scode = scode;
da.da_id = DIO_ID(va);
/*
* Internal HP-IB doesn't always return a device ID,
* so we rely on the sysflags.
*/
if ((scode == 7) && internalhpib)
da.da_id = DIO_DEVICE_ID_IHPIB;
else
da.da_id = DIO_ID(va);
if (DIO_ISFRAMEBUFFER(da.da_id))
da.da_secid = DIO_SECID(va);