Linux-libre 4.2-gnu

1 files changed, 0 insertions, 169 deletions

diff --git a/arch/mips/kernel/irq_cpu.c b/arch/mips/kernel/irq_cpu.c
deleted file mode 100644
index 6eb7a3f51..000000000
--- a/arch/mips/kernel/irq_cpu.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * Copyright (C) 2001 Ralf Baechle
- * Copyright (C) 2005  MIPS Technologies, Inc.	All rights reserved.
- *	Author: Maciej W. Rozycki <macro@mips.com>
- *
- * 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 which we don't really
- * use or support.  The last one is usually the CPU timer interrupt if
- * counter register is present or, for CPUs with an external FPU, by
- * convention it's the FPU exception interrupt.
- *
- * Don't even think about using this on SMP.  You have been warned.
- *
- * This file exports one global function:
- *	void mips_cpu_irq_init(void);
- */
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-
-#include <asm/irq_cpu.h>
-#include <asm/mipsregs.h>
-#include <asm/mipsmtregs.h>
-#include <asm/setup.h>
-
-static inline void unmask_mips_irq(struct irq_data *d)
-{
-	set_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	irq_enable_hazard();
-}
-
-static inline void mask_mips_irq(struct irq_data *d)
-{
-	clear_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	irq_disable_hazard();
-}
-
-static struct irq_chip mips_cpu_irq_controller = {
-	.name		= "MIPS",
-	.irq_ack	= mask_mips_irq,
-	.irq_mask	= mask_mips_irq,
-	.irq_mask_ack	= mask_mips_irq,
-	.irq_unmask	= unmask_mips_irq,
-	.irq_eoi	= unmask_mips_irq,
-	.irq_disable	= mask_mips_irq,
-	.irq_enable	= unmask_mips_irq,
-};
-
-/*
- * Basically the same as above but taking care of all the MT stuff
- */
-
-static unsigned int mips_mt_cpu_irq_startup(struct irq_data *d)
-{
-	unsigned int vpflags = dvpe();
-
-	clear_c0_cause(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	evpe(vpflags);
-	unmask_mips_irq(d);
-	return 0;
-}
-
-/*
- * While we ack the interrupt interrupts are disabled and thus we don't need
- * to deal with concurrency issues.  Same for mips_cpu_irq_end.
- */
-static void mips_mt_cpu_irq_ack(struct irq_data *d)
-{
-	unsigned int vpflags = dvpe();
-	clear_c0_cause(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	evpe(vpflags);
-	mask_mips_irq(d);
-}
-
-static struct irq_chip mips_mt_cpu_irq_controller = {
-	.name		= "MIPS",
-	.irq_startup	= mips_mt_cpu_irq_startup,
-	.irq_ack	= mips_mt_cpu_irq_ack,
-	.irq_mask	= mask_mips_irq,
-	.irq_mask_ack	= mips_mt_cpu_irq_ack,
-	.irq_unmask	= unmask_mips_irq,
-	.irq_eoi	= unmask_mips_irq,
-	.irq_disable	= mask_mips_irq,
-	.irq_enable	= unmask_mips_irq,
-};
-
-asmlinkage void __weak plat_irq_dispatch(void)
-{
-	unsigned long pending = read_c0_cause() & read_c0_status() & ST0_IM;
-	int irq;
-
-	if (!pending) {
-		spurious_interrupt();
-		return;
-	}
-
-	pending >>= CAUSEB_IP;
-	while (pending) {
-		irq = fls(pending) - 1;
-		do_IRQ(MIPS_CPU_IRQ_BASE + irq);
-		pending &= ~BIT(irq);
-	}
-}
-
-static int mips_cpu_intc_map(struct irq_domain *d, unsigned int irq,
-			     irq_hw_number_t hw)
-{
-	static struct irq_chip *chip;
-
-	if (hw < 2 && cpu_has_mipsmt) {
-		/* Software interrupts are used for MT/CMT IPI */
-		chip = &mips_mt_cpu_irq_controller;
-	} else {
-		chip = &mips_cpu_irq_controller;
-	}
-
-	if (cpu_has_vint)
-		set_vi_handler(hw, plat_irq_dispatch);
-
-	irq_set_chip_and_handler(irq, chip, handle_percpu_irq);
-
-	return 0;
-}
-
-static const struct irq_domain_ops mips_cpu_intc_irq_domain_ops = {
-	.map = mips_cpu_intc_map,
-	.xlate = irq_domain_xlate_onecell,
-};
-
-static void __init __mips_cpu_irq_init(struct device_node *of_node)
-{
-	struct irq_domain *domain;
-
-	/* Mask interrupts. */
-	clear_c0_status(ST0_IM);
-	clear_c0_cause(CAUSEF_IP);
-
-	domain = irq_domain_add_legacy(of_node, 8, MIPS_CPU_IRQ_BASE, 0,
-				       &mips_cpu_intc_irq_domain_ops, NULL);
-	if (!domain)
-		panic("Failed to add irqdomain for MIPS CPU");
-}
-
-void __init mips_cpu_irq_init(void)
-{
-	__mips_cpu_irq_init(NULL);
-}
-
-int __init mips_cpu_irq_of_init(struct device_node *of_node,
-				struct device_node *parent)
-{
-	__mips_cpu_irq_init(of_node);
-	return 0;
-}