This is additional patch to support NEC PC-9800 subarchitecture
against 2.5.62-ac1. (21/21)
Support difference of NMI handling, using mach-* scheme.
Regards,
Osamu Tomita
diff -Nru linux-2.5.62-ac1/arch/i386/kernel/traps.c linux98-2.5.62-ac1/arch/i386/kernel/traps.c
--- linux-2.5.62-ac1/arch/i386/kernel/traps.c 2003-02-21 10:00:45.000000000 +0900
+++ linux98-2.5.62-ac1/arch/i386/kernel/traps.c 2003-02-21 11:18:20.000000000 +0900
@@ -51,6 +51,8 @@
#include <linux/irq.h>
#include <linux/module.h>
+#include "mach_traps.h"
+
asmlinkage int system_call(void);
asmlinkage void lcall7(void);
asmlinkage void lcall27(void);
@@ -388,8 +390,7 @@
printk("You probably have a hardware problem with your RAM chips\n");
/* Clear and disable the memory parity error line. */
- reason = (reason & 0xf) | 4;
- outb(reason, 0x61);
+ clear_mem_error(reason);
}
static void io_check_error(unsigned char reason, struct pt_regs * regs)
@@ -426,7 +427,7 @@
static void default_do_nmi(struct pt_regs * regs)
{
- unsigned char reason = inb(0x61);
+ unsigned char reason = get_nmi_reason();
if (!(reason & 0xc0)) {
#if CONFIG_X86_LOCAL_APIC
@@ -450,10 +451,7 @@
* Reassert NMI in case it became active meanwhile
* as it's edge-triggered.
*/
- outb(0x8f, 0x70);
- inb(0x71); /* dummy */
- outb(0x0f, 0x70);
- inb(0x71); /* dummy */
+ reassert_nmi();
}
static int dummy_nmi_callback(struct pt_regs * regs, int cpu)
diff -Nru linux/include/asm-i386/mach-default/mach_traps.h linux98/include/asm-i386/mach-default/mach_traps.h
--- linux/include/asm-i386/mach-default/mach_traps.h 1970-01-01 09:00:00.000000000 +0900
+++ linux98/include/asm-i386/mach-default/mach_traps.h 2002-11-05 22:42:05.000000000 +0900
@@ -0,0 +1,29 @@
+/*
+ * include/asm-i386/mach-default/mach_traps.h
+ *
+ * Machine specific NMI handling for generic.
+ * Split out from traps.c by Osamu Tomita <tomita@cinet.co.jp>
+ */
+#ifndef _MACH_TRAPS_H
+#define _MACH_TRAPS_H
+
+static inline void clear_mem_error(unsigned char reason)
+{
+ reason = (reason & 0xf) | 4;
+ outb(reason, 0x61);
+}
+
+static inline unsigned char get_nmi_reason(void)
+{
+ return inb(0x61);
+}
+
+static inline void reassert_nmi(void)
+{
+ outb(0x8f, 0x70);
+ inb(0x71); /* dummy */
+ outb(0x0f, 0x70);
+ inb(0x71); /* dummy */
+}
+
+#endif /* !_MACH_TRAPS_H */
diff -Nru linux/include/asm-i386/mach-pc9800/mach_traps.h linux98/include/asm-i386/mach-pc9800/mach_traps.h
--- linux/include/asm-i386/mach-pc9800/mach_traps.h 1970-01-01 09:00:00.000000000 +0900
+++ linux98/include/asm-i386/mach-pc9800/mach_traps.h 2002-11-05 22:46:55.000000000 +0900
@@ -0,0 +1,27 @@
+/*
+ * include/asm-i386/mach-pc9800/mach_traps.h
+ *
+ * Machine specific NMI handling for PC-9800.
+ * Written by Osamu Tomita <tomita@cinet.co.jp>
+ */
+#ifndef _MACH_TRAPS_H
+#define _MACH_TRAPS_H
+
+static inline void clear_mem_error(unsigned char reason)
+{
+ outb(0x08, 0x37);
+ outb(0x09, 0x37);
+}
+
+static inline unsigned char get_nmi_reason(void)
+{
+ return (inb(0x33) & 6) ? 0x80 : 0;
+}
+
+static inline void reassert_nmi(void)
+{
+ outb(0x09, 0x50); /* disable NMI once */
+ outb(0x09, 0x52); /* re-enable it */
+}
+
+#endif /* !_MACH_TRAPS_H */
-
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This archive was generated by hypermail 2b29 : Sun Feb 23 2003 - 22:00:38 EST