[PATCH] powerpc: merged hw_irq.h

Merged hw_irq.h between ppc32 & ppc64.  Added support to use the Book-E
wrtee[i] instructions that allow modifying MSR[EE] atomically.
Additionally, added get_irq_desc() macros to ppc32 to allow mask_irq(),
unmask_irq(), and ack_irq() to be common between ppc32 & ppc64.

Note: because 64-bit Book-E implementations only have a 32-bit MSR the
macro's for Book-E need to come before the PPC64 macro's to ensure the
right thing happends for 64-bit Book-E processors.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 104 deletions

diff --git a/include/asm-ppc64/hw_irq.h b/include/asm-ppc64/hw_irq.h
deleted file mode 100644
index c483897..0000000
--- a/include/asm-ppc64/hw_irq.h
+++ /dev/null
@@ -1,104 +0,0 @@
-/*
- * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
- *
- * Use inline IRQs where possible - Anton Blanchard <anton@au.ibm.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifdef __KERNEL__
-#ifndef _PPC64_HW_IRQ_H
-#define _PPC64_HW_IRQ_H
-
-#include <linux/config.h>
-#include <linux/errno.h>
-#include <asm/irq.h>
-
-extern void timer_interrupt(struct pt_regs *);
-extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq);
-
-#ifdef CONFIG_PPC_ISERIES
-
-extern unsigned long local_get_flags(void);
-extern unsigned long local_irq_disable(void);
-extern void local_irq_restore(unsigned long);
-
-#define local_irq_enable()	local_irq_restore(1)
-#define local_save_flags(flags)	((flags) = local_get_flags())
-#define local_irq_save(flags)	((flags) = local_irq_disable())
-
-#define irqs_disabled()		(local_get_flags() == 0)
-
-#else
-
-#define local_save_flags(flags)	((flags) = mfmsr())
-#define local_irq_restore(flags) do { \
-	__asm__ __volatile__("": : :"memory"); \
-	__mtmsrd((flags), 1); \
-} while(0)
-
-static inline void local_irq_disable(void)
-{
-	unsigned long msr;
-	msr = mfmsr();
-	__mtmsrd(msr & ~MSR_EE, 1);
-	__asm__ __volatile__("": : :"memory");
-}
-
-static inline void local_irq_enable(void)
-{
-	unsigned long msr;
-	__asm__ __volatile__("": : :"memory");
-	msr = mfmsr();
-	__mtmsrd(msr | MSR_EE, 1);
-}
-
-static inline void __do_save_and_cli(unsigned long *flags)
-{
-	unsigned long msr;
-	msr = mfmsr();
-	*flags = msr;
-	__mtmsrd(msr & ~MSR_EE, 1);
-	__asm__ __volatile__("": : :"memory");
-}
-
-#define local_irq_save(flags)          __do_save_and_cli(&flags)
-
-#define irqs_disabled()				\
-({						\
-	unsigned long flags;			\
-	local_save_flags(flags);		\
-	!(flags & MSR_EE);			\
-})
-
-#endif /* CONFIG_PPC_ISERIES */
-
-#define mask_irq(irq)						\
-	({							\
-	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->disable)	\
-			desc->handler->disable(irq);		\
-	})
-#define unmask_irq(irq)						\
-	({							\
-	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->enable)	\
-			desc->handler->enable(irq);		\
-	})
-#define ack_irq(irq)						\
-	({							\
-	 	irq_desc_t *desc = get_irq_desc(irq);		\
-		if (desc->handler && desc->handler->ack)	\
-			desc->handler->ack(irq);		\
-	})
-
-/* Should we handle this via lost interrupts and IPIs or should we don't care like
- * we do now ? --BenH.
- */
-struct hw_interrupt_type;
-static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
- 
-#endif /* _PPC64_HW_IRQ_H */
-#endif /* __KERNEL__ */