Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 97 insertions, 0 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
new file mode 100644
index 0000000..c3ff4d1
--- /dev/null
+++ b/include/linux/irq.h
@@ -0,0 +1,97 @@
+#ifndef __irq_h
+#define __irq_h
+
+/*
+ * Please do not include this file in generic code.  There is currently
+ * no requirement for any architecture to implement anything held
+ * within this file.
+ *
+ * Thanks. --rmk
+ */
+
+#include <linux/config.h>
+
+#if !defined(CONFIG_ARCH_S390)
+
+#include <linux/linkage.h>
+#include <linux/cache.h>
+#include <linux/spinlock.h>
+#include <linux/cpumask.h>
+
+#include <asm/irq.h>
+#include <asm/ptrace.h>
+
+/*
+ * IRQ line status.
+ */
+#define IRQ_INPROGRESS	1	/* IRQ handler active - do not enter! */
+#define IRQ_DISABLED	2	/* IRQ disabled - do not enter! */
+#define IRQ_PENDING	4	/* IRQ pending - replay on enable */
+#define IRQ_REPLAY	8	/* IRQ has been replayed but not acked yet */
+#define IRQ_AUTODETECT	16	/* IRQ is being autodetected */
+#define IRQ_WAITING	32	/* IRQ not yet seen - for autodetection */
+#define IRQ_LEVEL	64	/* IRQ level triggered */
+#define IRQ_MASKED	128	/* IRQ masked - shouldn't be seen again */
+#define IRQ_PER_CPU	256	/* IRQ is per CPU */
+
+/*
+ * Interrupt controller descriptor. This is all we need
+ * to describe about the low-level hardware. 
+ */
+struct hw_interrupt_type {
+	const char * typename;
+	unsigned int (*startup)(unsigned int irq);
+	void (*shutdown)(unsigned int irq);
+	void (*enable)(unsigned int irq);
+	void (*disable)(unsigned int irq);
+	void (*ack)(unsigned int irq);
+	void (*end)(unsigned int irq);
+	void (*set_affinity)(unsigned int irq, cpumask_t dest);
+};
+
+typedef struct hw_interrupt_type  hw_irq_controller;
+
+/*
+ * This is the "IRQ descriptor", which contains various information
+ * about the irq, including what kind of hardware handling it has,
+ * whether it is disabled etc etc.
+ *
+ * Pad this out to 32 bytes for cache and indexing reasons.
+ */
+typedef struct irq_desc {
+	hw_irq_controller *handler;
+	void *handler_data;
+	struct irqaction *action;	/* IRQ action list */
+	unsigned int status;		/* IRQ status */
+	unsigned int depth;		/* nested irq disables */
+	unsigned int irq_count;		/* For detecting broken interrupts */
+	unsigned int irqs_unhandled;
+	spinlock_t lock;
+} ____cacheline_aligned irq_desc_t;
+
+extern irq_desc_t irq_desc [NR_IRQS];
+
+#include <asm/hw_irq.h> /* the arch dependent stuff */
+
+extern int setup_irq(unsigned int irq, struct irqaction * new);
+
+#ifdef CONFIG_GENERIC_HARDIRQS
+extern cpumask_t irq_affinity[NR_IRQS];
+extern int no_irq_affinity;
+extern int noirqdebug_setup(char *str);
+
+extern fastcall int handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
+				       struct irqaction *action);
+extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
+extern void note_interrupt(unsigned int irq, irq_desc_t *desc, int action_ret);
+extern void report_bad_irq(unsigned int irq, irq_desc_t *desc, int action_ret);
+extern int can_request_irq(unsigned int irq, unsigned long irqflags);
+
+extern void init_irq_proc(void);
+#endif
+
+extern hw_irq_controller no_irq_type;  /* needed in every arch ? */
+
+#endif
+
+#endif /* __irq_h */