patch-2.4.0-test12 linux/include/asm-parisc/irq.h

• Lines: 90
• Date: Tue Dec 5 12:29:39 2000
• Orig file: v2.4.0-test11/linux/include/asm-parisc/irq.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test11/linux/include/asm-parisc/irq.h linux/include/asm-parisc/irq.h
@@ -0,0 +1,89 @@
+#ifndef _ASM_IRQ_H
+#define _ASM_IRQ_H
+
+#include <linux/string.h>
+#include <asm/ptrace.h>
+#include <linux/interrupt.h>
+
+#include <asm/types.h>
+/*
+ *	linux/include/asm/irq.h
+ *
+ *	(C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar,
+ *		Copyright 1999 SuSE GmbH
+ *
+ *	IRQ/IPI changes taken from work by Thomas Radke
+ *	<tomsoft@informatik.tu-chemnitz.de>
+ */
+
+#define CPU_IRQ_REGION	 1
+#define TIMER_IRQ	 (IRQ_FROM_REGION(CPU_IRQ_REGION) | 0)
+#define	IPI_IRQ		 (IRQ_FROM_REGION(CPU_IRQ_REGION) | 1)
+
+/* This should be 31 for PA1.1 binaries and 63 for PA-2.0 wide mode) */
+#define MAX_CPU_IRQ	(BITS_PER_LONG - 1)
+
+#if 1    /* set to 1 to get the new irq offsets, or ...   */
+# if BITS_PER_LONG == 32
+#  define IRQ_REGION_SHIFT 5
+# else
+#  define IRQ_REGION_SHIFT 6
+# endif
+#else   /* 256 irq-entries per region (wastes memory, maybe gains speed? :-))*/
+# define IRQ_REGION_SHIFT 8
+#endif 
+
+#define IRQ_PER_REGION  (1 << IRQ_REGION_SHIFT)
+#define NR_IRQ_REGS	8
+#define NR_IRQS		(NR_IRQ_REGS * IRQ_PER_REGION)
+
+#define IRQ_REGION(irq) 	((irq) >> IRQ_REGION_SHIFT)
+#define IRQ_OFFSET(irq)		((irq) & ((1<<IRQ_REGION_SHIFT)-1))
+#define	IRQ_FROM_REGION(reg)	((reg) << IRQ_REGION_SHIFT)
+
+#define IRQ_REG_DIS	   1	/* support disable_irq / enable_irq */
+#define IRQ_REG_MASK	   2	/* require IRQs to be masked */
+
+struct irq_region_ops {
+	void (*disable_irq)(void *dev, int irq);
+	void (* enable_irq)(void *dev, int irq);
+	void (*   mask_irq)(void *dev, int irq);
+	void (* unmask_irq)(void *dev, int irq);
+};
+
+struct irq_region_data {
+	void *dev;
+	const char *name;
+	unsigned flags;
+	int irqbase;
+};
+
+struct irq_region {
+	struct irq_region_ops ops;
+	struct irq_region_data data;
+
+	struct irqaction *action;
+};
+
+extern struct irq_region *irq_region[NR_IRQ_REGS];
+
+static __inline__ int irq_cannonicalize(int irq)
+{
+	return irq;
+}
+
+extern void disable_irq(int);
+extern void enable_irq(int);
+
+extern void do_irq_mask(unsigned long mask, struct irq_region *region,
+	struct pt_regs *regs);
+
+extern struct irq_region *alloc_irq_region(int count, struct irq_region_ops *ops,
+	unsigned long flags, const char *name, void *dev);
+
+extern int txn_alloc_irq(void);
+extern int txn_claim_irq(int);
+extern unsigned int txn_alloc_data(int, unsigned int);
+extern unsigned long txn_alloc_addr(int);
+
+#endif /* _ASM_IRQ_H */