patch-2.4.20 linux-2.4.20/include/asm-ppc/open_pic.h

• Lines: 71
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-ppc/open_pic.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/asm-ppc/open_pic.h linux-2.4.20/include/asm-ppc/open_pic.h
@@ -0,0 +1,70 @@
+/*
+ * BK Id: %F% %I% %G% %U% %#%
+ */
+/*
+ *  arch/ppc/kernel/open_pic.h -- OpenPIC Interrupt Handling
+ *
+ *  Copyright (C) 1997 Geert Uytterhoeven
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive
+ *  for more details.
+ *  
+ */
+
+#ifndef _PPC_KERNEL_OPEN_PIC_H
+#define _PPC_KERNEL_OPEN_PIC_H
+
+#include <linux/config.h>
+#include <linux/irq.h>
+
+#define OPENPIC_SIZE	0x40000
+
+/*
+ *  Non-offset'ed vector numbers
+ */
+
+#define OPENPIC_VEC_TIMER	64	/* and up */
+#define OPENPIC_VEC_IPI		72	/* and up */
+#define OPENPIC_VEC_SPURIOUS	127
+
+/* OpenPIC IRQ controller structure */
+extern struct hw_interrupt_type open_pic;
+
+/* OpenPIC IPI controller structure */
+#ifdef CONFIG_SMP
+extern struct hw_interrupt_type open_pic_ipi;
+#endif /* CONFIG_SMP */
+
+extern u_int OpenPIC_NumInitSenses;
+extern u_char *OpenPIC_InitSenses;
+extern void* OpenPIC_Addr;
+
+/* Exported functions */
+extern void openpic_set_sources(int first_irq, int num_irqs, void *isr);
+extern void openpic_init(int, int, unsigned char *, int);
+extern u_int openpic_irq(void);
+extern void openpic_eoi(void);
+extern void openpic_request_IPIs(void);
+extern void do_openpic_setup_cpu(void);
+extern int openpic_get_irq(struct pt_regs *regs);
+extern void openpic_reset_processor_phys(u_int cpumask);
+extern void openpic_setup_ISU(int isu_num, unsigned long addr);
+extern void openpic_cause_IPI(u_int ipi, u_int cpumask);
+extern void smp_openpic_message_pass(int target, int msg, unsigned long data,
+				     int wait);
+
+extern inline int openpic_to_irq(int irq)
+{
+	/* IRQ 0 usually means 'disabled'.. don't mess with it 
+	 * exceptions to this (sandpoint maybe?) 
+	 * shouldn't use openpic_to_irq 
+	 */
+	if (irq != 0){
+		return irq += NUM_8259_INTERRUPTS;
+	} else {
+		return 0;
+	}
+}
+/*extern int open_pic_irq_offset;*/
+#endif /* _PPC_KERNEL_OPEN_PIC_H */