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The Cyrix cs5530 PCI host bridge does not have a broken latch on the i8254

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clock core, unlike its predecessors the cs5510 and cs5520.

This reverses the setting from i386/1386/identcpu.c where it argueably should
not have been set in the first place, as argued in PR kern/25261

XXX One other thing: the i8254 latch compensation code is only found in
i386/isa/clock.c and NOT in i386/i386/microtime.S where it should also be.
This commit is contained in:
fair 2005-06-26 02:09:59 +00:00
parent 1bffc74f4f
commit 762e4993e8
1 changed files with 20 additions and 2 deletions
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22
sys/arch/i386/pci/pcib.c
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@ -1,4 +1,4 @@
/* $NetBSD: pcib.c,v 1.35 2005/02/03 21:35:44 perry Exp $ */
/* $NetBSD: pcib.c,v 1.36 2005/06/26 02:09:59 fair Exp $ */
/*-
* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.35 2005/02/03 21:35:44 perry Exp $");
__KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.36 2005/06/26 02:09:59 fair Exp $");
#include <sys/types.h>
#include <sys/param.h>
@ -156,6 +156,24 @@ pcibmatch(struct device *parent, struct cfdata *match, void *aux)
*/
return (0);
}
/*
* The Cyrix cs5530 PCI host bridge does not have a broken
* latch on the i8254 clock core, unlike its predecessors
* the cs5510 and cs5520. This reverses the setting from
* i386/1386/identcpu.c where it argueably should not have
* been set in the first place. XXX
*/
case PCI_VENDOR_CYRIX:
switch (PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_CYRIX_CX5530_PCIB:
{
extern int clock_broken_latch;
clock_broken_latch = 0;
}
return(1);
}
break;
}
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&