patch-2.4.19 linux-2.4.19/arch/mips/ddb5xxx/common/irq_cpu.c

• Lines: 116
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips/ddb5xxx/common/irq_cpu.c
• Orig date: Sun Sep 9 10:43:01 2001

diff -urN linux-2.4.18/arch/mips/ddb5xxx/common/irq_cpu.c linux-2.4.19/arch/mips/ddb5xxx/common/irq_cpu.c
@@ -1,115 +0,0 @@
-/***********************************************************************
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- *  arch/mips/ddb5xxx/common/irq_cpu.c
- *     This file define the irq handler for MIPS CPU interrupts.
- *
- * 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.
- ***********************************************************************
- */
-
-/*
- * Almost all MIPS CPUs define 8 interrupt sources.  They are typically
- * level triggered (i.e., cannot be cleared from CPU; must be cleared from
- * device).  The first two are software interrupts.  The last one is 
- * usually cpu timer interrupt if coutner register is present.
- *
- * This file exports one global function:
- *	mips_cpu_irq_init(u32 irq_base);
- */
-
-#include <linux/irq.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <asm/mipsregs.h>
-
-/* [jsun] sooner or later we should move this debug stuff to MIPS common */
-#include <asm/ddb5xxx/debug.h>
-
-static int mips_cpu_irq_base=-1;
-
-static void 
-mips_cpu_irq_enable(unsigned int irq)
-{
-	MIPS_ASSERT(mips_cpu_irq_base != -1);
-	MIPS_ASSERT(irq >= mips_cpu_irq_base);
-	MIPS_ASSERT(irq < mips_cpu_irq_base+8);
-
-	clear_cp0_cause( 1 << (irq - mips_cpu_irq_base + 8));
-	set_cp0_status(1 << (irq - mips_cpu_irq_base + 8));
-}
-
-static void 
-mips_cpu_irq_disable(unsigned int irq)
-{
-	MIPS_ASSERT(mips_cpu_irq_base != -1);
-	MIPS_ASSERT(irq >= mips_cpu_irq_base);
-	MIPS_ASSERT(irq < mips_cpu_irq_base+8);
-
-	clear_cp0_status(1 << (irq - mips_cpu_irq_base + 8));
-}
-
-static unsigned int mips_cpu_irq_startup(unsigned int irq)
-{
-	mips_cpu_irq_enable(irq);
-	return 0;
-}
-
-#define	mips_cpu_irq_shutdown	mips_cpu_irq_disable
-
-static void
-mips_cpu_irq_ack(unsigned int irq)
-{
-	MIPS_ASSERT(mips_cpu_irq_base != -1);
-	MIPS_ASSERT(irq >= mips_cpu_irq_base);
-	MIPS_ASSERT(irq < mips_cpu_irq_base+8);
-
-	/* although we attemp to clear the IP bit in cause reigster, I think
-	 * usually it is cleared by device (irq source)
-	 */
-	clear_cp0_cause( 1 << (irq - mips_cpu_irq_base + 8));
-
-	/* I am not fully convinced that I should disable irq here */
-}
-
-static void
-mips_cpu_irq_end(unsigned int irq)
-{
-	MIPS_ASSERT(mips_cpu_irq_base != -1);
-	MIPS_ASSERT(irq >= mips_cpu_irq_base);
-	MIPS_ASSERT(irq < mips_cpu_irq_base+8);
-	/* I am not fully convinced that I should enable irq here */
-}
-
-static hw_irq_controller mips_cpu_irq_controller = {
-	"CPU_irq",
-	mips_cpu_irq_startup,
-	mips_cpu_irq_shutdown,
-	mips_cpu_irq_enable,
-	mips_cpu_irq_disable,
-	mips_cpu_irq_ack,
-	mips_cpu_irq_end,
-	NULL			/* no affinity stuff for UP */
-};
-
-
-void 
-mips_cpu_irq_init(u32 irq_base)
-{
-	extern irq_desc_t irq_desc[];
-	u32 i;
-
-	for (i= irq_base; i< irq_base+8; i++) {
-		irq_desc[i].status = IRQ_DISABLED;
-		irq_desc[i].action = NULL;
-		irq_desc[i].depth = 1;
-		irq_desc[i].handler = &mips_cpu_irq_controller;
-	}
-
-	mips_cpu_irq_base = irq_base;
-}