patch-2.4.19 linux-2.4.19/include/asm-ppc64/hw_irq.h

• Lines: 81
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-ppc64/hw_irq.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-ppc64/hw_irq.h linux-2.4.19/include/asm-ppc64/hw_irq.h
@@ -0,0 +1,80 @@
+/*
+ * 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 <asm/irq.h>
+
+int timer_interrupt(struct pt_regs *);
+
+#ifdef CONFIG_PPC_ISERIES
+
+extern void __no_use_sti(void);
+extern void __no_use_cli(void);
+extern void __no_use_restore_flags(unsigned long);
+extern unsigned long __no_use_save_flags(void);
+extern void __no_use_set_lost(unsigned long);
+extern void __no_lpq_restore_flags(unsigned long);
+
+#define __cli()			__no_use_cli()
+#define __sti()			__no_use_sti()
+#define __save_flags(flags)	((flags) = __no_use_save_flags())
+#define __restore_flags(flags)	__no_use_restore_flags((unsigned long)flags)
+#define __save_and_cli(flags)	({__save_flags(flags);__cli();})
+
+#else
+
+#define __save_flags(flags)	((flags) = mfmsr())
+#define __restore_flags(flags)	mtmsrd(flags)
+
+static inline void __cli(void)
+{
+	unsigned long msr;
+	msr = mfmsr();
+	mtmsrd(msr & ~MSR_EE);
+	__asm__ __volatile__("": : :"memory");
+}
+
+static inline void __sti(void)
+{
+	unsigned long msr;
+	__asm__ __volatile__("": : :"memory");
+	msr = mfmsr();
+	mtmsrd(msr | MSR_EE);
+}
+
+static inline void __do_save_and_cli(unsigned long *flags)
+{
+	unsigned long msr;
+	msr = mfmsr();
+	*flags = msr;
+	mtmsrd(msr & ~MSR_EE);
+	__asm__ __volatile__("": : :"memory");
+}
+
+#define __save_and_cli(flags)          __do_save_and_cli(&flags)
+
+#endif /* CONFIG_PPC_ISERIES */
+
+#define mask_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->disable) irq_desc[irq].handler->disable(irq);})
+#define unmask_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->enable) irq_desc[irq].handler->enable(irq);})
+#define ack_irq(irq) ({if (irq_desc[irq].handler && irq_desc[irq].handler->ack) irq_desc[irq].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__ */