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Subject[PATCH] create header file for i386/kernel/i8259.c
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Hi all,

this trivial patch against 2.5.59 creates header file asm-i386/i8259.h
and exports some prototypes and macros related to i8259 handling into it.

This allows subarches (such as visws) to use some parts of i8259.c for
handling their nonstandard hardware.

Please consider applying.

Best regards.

--
Andrey Panin | Embedded systems software developer
pazke@orbita1.ru | PGP key: wwwkeys.pgp.net
diff -urN -X /usr/share/dontdiff linux-2.5.59.vanilla/arch/i386/kernel/i8259.c linux-2.5.59/arch/i386/kernel/i8259.c
--- linux-2.5.59.vanilla/arch/i386/kernel/i8259.c Wed Jan 15 20:37:20 2003
+++ linux-2.5.59/arch/i386/kernel/i8259.c Sun Jan 19 18:43:10 2003
@@ -22,6 +22,7 @@
#include <asm/desc.h>
#include <asm/apic.h>
#include <asm/arch_hooks.h>
+#include <asm/i8259.h>

#include <linux/irq.h>

@@ -47,7 +48,7 @@

void mask_and_ack_8259A(unsigned int);

-static unsigned int startup_8259A_irq(unsigned int irq)
+unsigned int startup_8259A_irq(unsigned int irq)
{
enable_8259A_irq(irq);
return 0; /* never anything pending */
@@ -71,11 +72,7 @@
/*
* This contains the irq mask for both 8259A irq controllers,
*/
-static unsigned int cached_irq_mask = 0xffff;
-
-#define __byte(x,y) (((unsigned char *)&(y))[x])
-#define cached_21 (__byte(0,cached_irq_mask))
-#define cached_A1 (__byte(1,cached_irq_mask))
+unsigned int cached_irq_mask = 0xffff;

/*
* Not all IRQs can be routed through the IO-APIC, eg. on certain (older)
diff -urN -X /usr/share/dontdiff linux-2.5.59.vanilla/include/asm-i386/i8259.h linux-2.5.59/include/asm-i386/i8259.h
--- linux-2.5.59.vanilla/include/asm-i386/i8259.h Thu Jan 1 03:00:00 1970
+++ linux-2.5.59/include/asm-i386/i8259.h Sun Jan 19 18:43:10 2003
@@ -0,0 +1,17 @@
+#ifndef __ASM_I8259_H__
+#define __ASM_I8259_H__
+
+extern unsigned int cached_irq_mask;
+
+#define __byte(x,y) (((unsigned char *) &(y))[x])
+#define cached_21 (__byte(0, cached_irq_mask))
+#define cached_A1 (__byte(1, cached_irq_mask))
+
+extern spinlock_t i8259A_lock;
+
+extern void init_8259A(int auto_eoi);
+extern void enable_8259A_irq(unsigned int irq);
+extern void disable_8259A_irq(unsigned int irq);
+extern unsigned int startup_8259A_irq(unsigned int irq);
+
+#endif /* __ASM_I8259_H__ */
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