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Add a small hack to support the strange antics of the Unisys ELI 4003. This

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machine generates an NMI for each floating point error, just like an old XT.
Since it is ISA only, reading the EISA status port yields 0xff, which would
give a spurious EISA panic.  The simplest thing to do is to ignore the 0xff.
This commit is contained in:
Stephen McKay 1997-09-28 15:48:34 +00:00
parent 3e27c094e4
commit a2575e01e8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=29936
4 changed files with 96 additions and 48 deletions
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36
sys/amd64/isa/intr_machdep.c
View file

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: intr_machdep.c,v 1.5 1997/08/29 18:45:19 fsmp Exp $
* $Id: intr_machdep.c,v 1.6 1997/08/30 08:08:04 fsmp Exp $
*/
#include "opt_auto_eoi.h"
@ -150,20 +150,32 @@ isa_nmi(cd)
#else /* IBM-PC */
int isa_port = inb(0x61);
int eisa_port = inb(0x461);
if(isa_port & NMI_PARITY) {
if (isa_port & NMI_PARITY)
panic("RAM parity error, likely hardware failure.");
} else if(isa_port & NMI_IOCHAN) {
if (isa_port & NMI_IOCHAN)
panic("I/O channel check, likely hardware failure.");
} else if(eisa_port & ENMI_WATCHDOG) {
panic("EISA watchdog timer expired, likely hardware failure.");
} else if(eisa_port & ENMI_BUSTIMER) {
panic("EISA bus timeout, likely hardware failure.");
} else if(eisa_port & ENMI_IOSTATUS) {
panic("EISA I/O port status error.");
} else {
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
/*
* On a real EISA machine, this will never happen. However it can
* happen on ISA machines which implement XT style floating point
* error handling (very rare). Save them from a meaningless panic.
*/
if (eisa_port == 0xff)
return(0);
}
if (eisa_port & ENMI_WATCHDOG)
panic("EISA watchdog timer expired, likely hardware failure.");
if (eisa_port & ENMI_BUSTIMER)
panic("EISA bus timeout, likely hardware failure.");
if (eisa_port & ENMI_IOSTATUS)
panic("EISA I/O port status error.");
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
return(0);
#endif
}

36
sys/amd64/isa/nmi.c
View file

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: intr_machdep.c,v 1.5 1997/08/29 18:45:19 fsmp Exp $
* $Id: intr_machdep.c,v 1.6 1997/08/30 08:08:04 fsmp Exp $
*/
#include "opt_auto_eoi.h"
@ -150,20 +150,32 @@ isa_nmi(cd)
#else /* IBM-PC */
int isa_port = inb(0x61);
int eisa_port = inb(0x461);
if(isa_port & NMI_PARITY) {
if (isa_port & NMI_PARITY)
panic("RAM parity error, likely hardware failure.");
} else if(isa_port & NMI_IOCHAN) {
if (isa_port & NMI_IOCHAN)
panic("I/O channel check, likely hardware failure.");
} else if(eisa_port & ENMI_WATCHDOG) {
panic("EISA watchdog timer expired, likely hardware failure.");
} else if(eisa_port & ENMI_BUSTIMER) {
panic("EISA bus timeout, likely hardware failure.");
} else if(eisa_port & ENMI_IOSTATUS) {
panic("EISA I/O port status error.");
} else {
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
/*
* On a real EISA machine, this will never happen. However it can
* happen on ISA machines which implement XT style floating point
* error handling (very rare). Save them from a meaningless panic.
*/
if (eisa_port == 0xff)
return(0);
}
if (eisa_port & ENMI_WATCHDOG)
panic("EISA watchdog timer expired, likely hardware failure.");
if (eisa_port & ENMI_BUSTIMER)
panic("EISA bus timeout, likely hardware failure.");
if (eisa_port & ENMI_IOSTATUS)
panic("EISA I/O port status error.");
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
return(0);
#endif
}

36
sys/i386/isa/intr_machdep.c
View file

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: intr_machdep.c,v 1.5 1997/08/29 18:45:19 fsmp Exp $
* $Id: intr_machdep.c,v 1.6 1997/08/30 08:08:04 fsmp Exp $
*/
#include "opt_auto_eoi.h"
@ -150,20 +150,32 @@ isa_nmi(cd)
#else /* IBM-PC */
int isa_port = inb(0x61);
int eisa_port = inb(0x461);
if(isa_port & NMI_PARITY) {
if (isa_port & NMI_PARITY)
panic("RAM parity error, likely hardware failure.");
} else if(isa_port & NMI_IOCHAN) {
if (isa_port & NMI_IOCHAN)
panic("I/O channel check, likely hardware failure.");
} else if(eisa_port & ENMI_WATCHDOG) {
panic("EISA watchdog timer expired, likely hardware failure.");
} else if(eisa_port & ENMI_BUSTIMER) {
panic("EISA bus timeout, likely hardware failure.");
} else if(eisa_port & ENMI_IOSTATUS) {
panic("EISA I/O port status error.");
} else {
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
/*
* On a real EISA machine, this will never happen. However it can
* happen on ISA machines which implement XT style floating point
* error handling (very rare). Save them from a meaningless panic.
*/
if (eisa_port == 0xff)
return(0);
}
if (eisa_port & ENMI_WATCHDOG)
panic("EISA watchdog timer expired, likely hardware failure.");
if (eisa_port & ENMI_BUSTIMER)
panic("EISA bus timeout, likely hardware failure.");
if (eisa_port & ENMI_IOSTATUS)
panic("EISA I/O port status error.");
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
return(0);
#endif
}

36
sys/i386/isa/nmi.c
View file

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
* $Id: intr_machdep.c,v 1.5 1997/08/29 18:45:19 fsmp Exp $
* $Id: intr_machdep.c,v 1.6 1997/08/30 08:08:04 fsmp Exp $
*/
#include "opt_auto_eoi.h"
@ -150,20 +150,32 @@ isa_nmi(cd)
#else /* IBM-PC */
int isa_port = inb(0x61);
int eisa_port = inb(0x461);
if(isa_port & NMI_PARITY) {
if (isa_port & NMI_PARITY)
panic("RAM parity error, likely hardware failure.");
} else if(isa_port & NMI_IOCHAN) {
if (isa_port & NMI_IOCHAN)
panic("I/O channel check, likely hardware failure.");
} else if(eisa_port & ENMI_WATCHDOG) {
panic("EISA watchdog timer expired, likely hardware failure.");
} else if(eisa_port & ENMI_BUSTIMER) {
panic("EISA bus timeout, likely hardware failure.");
} else if(eisa_port & ENMI_IOSTATUS) {
panic("EISA I/O port status error.");
} else {
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
/*
* On a real EISA machine, this will never happen. However it can
* happen on ISA machines which implement XT style floating point
* error handling (very rare). Save them from a meaningless panic.
*/
if (eisa_port == 0xff)
return(0);
}
if (eisa_port & ENMI_WATCHDOG)
panic("EISA watchdog timer expired, likely hardware failure.");
if (eisa_port & ENMI_BUSTIMER)
panic("EISA bus timeout, likely hardware failure.");
if (eisa_port & ENMI_IOSTATUS)
panic("EISA I/O port status error.");
printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port);
return(0);
#endif
}