1 files changed, 84 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/linux/interrupt.h b/pfinet/linux-src/include/linux/interrupt.h
new file mode 100644
index 00000000..3e3edd8b
--- /dev/null
+++ b/pfinet/linux-src/include/linux/interrupt.h
@@ -0,0 +1,84 @@
+/* interrupt.h */
+#ifndef _LINUX_INTERRUPT_H
+#define _LINUX_INTERRUPT_H
+
+#include <linux/kernel.h>
+#include <asm/bitops.h>
+#include <asm/atomic.h>
+
+struct irqaction {
+	void (*handler)(int, void *, struct pt_regs *);
+	unsigned long flags;
+	unsigned long mask;
+	const char *name;
+	void *dev_id;
+	struct irqaction *next;
+};
+
+extern volatile unsigned char bh_running;
+
+extern atomic_t bh_mask_count[32];
+extern unsigned long bh_active;
+extern unsigned long bh_mask;
+extern void (*bh_base[32])(void);
+
+asmlinkage void do_bottom_half(void);
+
+/* Who gets which entry in bh_base.  Things which will occur most often
+   should come first - in which case NET should be up the top with SERIAL/TQUEUE! */
+   
+enum {
+	TIMER_BH = 0,
+	CONSOLE_BH,
+	TQUEUE_BH,
+	DIGI_BH,
+	SERIAL_BH,
+	RISCOM8_BH,
+	SPECIALIX_BH,
+	AURORA_BH,
+	ESP_BH,
+	NET_BH,
+	SCSI_BH,
+	IMMEDIATE_BH,
+	KEYBOARD_BH,
+	CYCLADES_BH,
+	CM206_BH,
+	JS_BH,
+	MACSERIAL_BH,
+	ISICOM_BH
+};
+
+#include <asm/hardirq.h>
+#include <asm/softirq.h>
+
+/*
+ * Autoprobing for irqs:
+ *
+ * probe_irq_on() and probe_irq_off() provide robust primitives
+ * for accurate IRQ probing during kernel initialization.  They are
+ * reasonably simple to use, are not "fooled" by spurious interrupts,
+ * and, unlike other attempts at IRQ probing, they do not get hung on
+ * stuck interrupts (such as unused PS2 mouse interfaces on ASUS boards).
+ *
+ * For reasonably foolproof probing, use them as follows:
+ *
+ * 1. clear and/or mask the device's internal interrupt.
+ * 2. sti();
+ * 3. irqs = probe_irq_on();      // "take over" all unassigned idle IRQs
+ * 4. enable the device and cause it to trigger an interrupt.
+ * 5. wait for the device to interrupt, using non-intrusive polling or a delay.
+ * 6. irq = probe_irq_off(irqs);  // get IRQ number, 0=none, negative=multiple
+ * 7. service the device to clear its pending interrupt.
+ * 8. loop again if paranoia is required.
+ *
+ * probe_irq_on() returns a mask of allocated irq's.
+ *
+ * probe_irq_off() takes the mask as a parameter,
+ * and returns the irq number which occurred,
+ * or zero if none occurred, or a negative irq number
+ * if more than one irq occurred.
+ */
+extern unsigned long probe_irq_on(void);	/* returns 0 on failure */
+extern int probe_irq_off(unsigned long);	/* returns 0 or negative on failure */
+
+#endif