1 files changed, 0 insertions, 397 deletions
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
deleted file mode 100644
index f70ec7dadeb..00000000000
--- a/arch/arm/common/gic.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
- *  linux/arch/arm/common/gic.c
- *
- *  Copyright (C) 2002 ARM Limited, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Interrupt architecture for the GIC:
- *
- * o There is one Interrupt Distributor, which receives interrupts
- *   from system devices and sends them to the Interrupt Controllers.
- *
- * o There is one CPU Interface per CPU, which sends interrupts sent
- *   by the Distributor, and interrupts generated locally, to the
- *   associated CPU. The base address of the CPU interface is usually
- *   aliased so that the same address points to different chips depending
- *   on the CPU it is accessed from.
- *
- * Note that IRQs 0-31 are special - they are local to each CPU.
- * As such, the enable set/clear, pending set/clear and active bit
- * registers are banked per-cpu for these sources.
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/smp.h>
-#include <linux/cpumask.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <asm/mach/irq.h>
-#include <asm/hardware/gic.h>
-
-static DEFINE_SPINLOCK(irq_controller_lock);
-
-/* Address of GIC 0 CPU interface */
-void __iomem *gic_cpu_base_addr __read_mostly;
-
-struct gic_chip_data {
-	unsigned int irq_offset;
-	void __iomem *dist_base;
-	void __iomem *cpu_base;
-};
-
-/*
- * Supported arch specific GIC irq extension.
- * Default make them NULL.
- */
-struct irq_chip gic_arch_extn = {
-	.irq_ack	= NULL,
-	.irq_mask	= NULL,
-	.irq_unmask	= NULL,
-	.irq_retrigger	= NULL,
-	.irq_set_type	= NULL,
-	.irq_set_wake	= NULL,
-};
-
-#ifndef MAX_GIC_NR
-#define MAX_GIC_NR	1
-#endif
-
-static struct gic_chip_data gic_data[MAX_GIC_NR] __read_mostly;
-
-static inline void __iomem *gic_dist_base(struct irq_data *d)
-{
-	struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
-	return gic_data->dist_base;
-}
-
-static inline void __iomem *gic_cpu_base(struct irq_data *d)
-{
-	struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
-	return gic_data->cpu_base;
-}
-
-static inline unsigned int gic_irq(struct irq_data *d)
-{
-	struct gic_chip_data *gic_data = irq_data_get_irq_chip_data(d);
-	return d->irq - gic_data->irq_offset;
-}
-
-/*
- * Routines to acknowledge, disable and enable interrupts
- */
-static void gic_ack_irq(struct irq_data *d)
-{
-	spin_lock(&irq_controller_lock);
-	if (gic_arch_extn.irq_ack)
-		gic_arch_extn.irq_ack(d);
-	writel(gic_irq(d), gic_cpu_base(d) + GIC_CPU_EOI);
-	spin_unlock(&irq_controller_lock);
-}
-
-static void gic_mask_irq(struct irq_data *d)
-{
-	u32 mask = 1 << (d->irq % 32);
-
-	spin_lock(&irq_controller_lock);
-	writel(mask, gic_dist_base(d) + GIC_DIST_ENABLE_CLEAR + (gic_irq(d) / 32) * 4);
-	if (gic_arch_extn.irq_mask)
-		gic_arch_extn.irq_mask(d);
-	spin_unlock(&irq_controller_lock);
-}
-
-static void gic_unmask_irq(struct irq_data *d)
-{
-	u32 mask = 1 << (d->irq % 32);
-
-	spin_lock(&irq_controller_lock);
-	if (gic_arch_extn.irq_unmask)
-		gic_arch_extn.irq_unmask(d);
-	writel(mask, gic_dist_base(d) + GIC_DIST_ENABLE_SET + (gic_irq(d) / 32) * 4);
-	spin_unlock(&irq_controller_lock);
-}
-
-static int gic_set_type(struct irq_data *d, unsigned int type)
-{
-	void __iomem *base = gic_dist_base(d);
-	unsigned int gicirq = gic_irq(d);
-	u32 enablemask = 1 << (gicirq % 32);
-	u32 enableoff = (gicirq / 32) * 4;
-	u32 confmask = 0x2 << ((gicirq % 16) * 2);
-	u32 confoff = (gicirq / 16) * 4;
-	bool enabled = false;
-	u32 val;
-
-	/* Interrupt configuration for SGIs can't be changed */
-	if (gicirq < 16)
-		return -EINVAL;
-
-	if (type != IRQ_TYPE_LEVEL_HIGH && type != IRQ_TYPE_EDGE_RISING)
-		return -EINVAL;
-
-	spin_lock(&irq_controller_lock);
-
-	if (gic_arch_extn.irq_set_type)
-		gic_arch_extn.irq_set_type(d, type);
-
-	val = readl(base + GIC_DIST_CONFIG + confoff);
-	if (type == IRQ_TYPE_LEVEL_HIGH)
-		val &= ~confmask;
-	else if (type == IRQ_TYPE_EDGE_RISING)
-		val |= confmask;
-
-	/*
-	 * As recommended by the spec, disable the interrupt before changing
-	 * the configuration
-	 */
-	if (readl(base + GIC_DIST_ENABLE_SET + enableoff) & enablemask) {
-		writel(enablemask, base + GIC_DIST_ENABLE_CLEAR + enableoff);
-		enabled = true;
-	}
-
-	writel(val, base + GIC_DIST_CONFIG + confoff);
-
-	if (enabled)
-		writel(enablemask, base + GIC_DIST_ENABLE_SET + enableoff);
-
-	spin_unlock(&irq_controller_lock);
-
-	return 0;
-}
-
-static int gic_retrigger(struct irq_data *d)
-{
-	if (gic_arch_extn.irq_retrigger)
-		return gic_arch_extn.irq_retrigger(d);
-
-	return -ENXIO;
-}
-
-#ifdef CONFIG_SMP
-static int gic_set_affinity(struct irq_data *d, const struct cpumask *mask_val,
-			    bool force)
-{
-	void __iomem *reg = gic_dist_base(d) + GIC_DIST_TARGET + (gic_irq(d) & ~3);
-	unsigned int shift = (d->irq % 4) * 8;
-	unsigned int cpu = cpumask_first(mask_val);
-	u32 val, mask, bit;
-
-	if (cpu >= 8)
-		return -EINVAL;
-
-	mask = 0xff << shift;
-	bit = 1 << (cpu + shift);
-
-	spin_lock(&irq_controller_lock);
-	d->node = cpu;
-	val = readl(reg) & ~mask;
-	writel(val | bit, reg);
-	spin_unlock(&irq_controller_lock);
-
-	return 0;
-}
-#endif
-
-#ifdef CONFIG_PM
-static int gic_set_wake(struct irq_data *d, unsigned int on)
-{
-	int ret = -ENXIO;
-
-	if (gic_arch_extn.irq_set_wake)
-		ret = gic_arch_extn.irq_set_wake(d, on);
-
-	return ret;
-}
-
-#else
-#define gic_set_wake	NULL
-#endif
-
-static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
-{
-	struct gic_chip_data *chip_data = irq_get_handler_data(irq);
-	struct irq_chip *chip = irq_get_chip(irq);
-	unsigned int cascade_irq, gic_irq;
-	unsigned long status;
-
-	/* primary controller ack'ing */
-	chip->irq_ack(&desc->irq_data);
-
-	spin_lock(&irq_controller_lock);
-	status = readl(chip_data->cpu_base + GIC_CPU_INTACK);
-	spin_unlock(&irq_controller_lock);
-
-	gic_irq = (status & 0x3ff);
-	if (gic_irq == 1023)
-		goto out;
-
-	cascade_irq = gic_irq + chip_data->irq_offset;
-	if (unlikely(gic_irq < 32 || gic_irq > 1020 || cascade_irq >= NR_IRQS))
-		do_bad_IRQ(cascade_irq, desc);
-	else
-		generic_handle_irq(cascade_irq);
-
- out:
-	/* primary controller unmasking */
-	chip->irq_unmask(&desc->irq_data);
-}
-
-static struct irq_chip gic_chip = {
-	.name			= "GIC",
-	.irq_ack		= gic_ack_irq,
-	.irq_mask		= gic_mask_irq,
-	.irq_unmask		= gic_unmask_irq,
-	.irq_set_type		= gic_set_type,
-	.irq_retrigger		= gic_retrigger,
-#ifdef CONFIG_SMP
-	.irq_set_affinity	= gic_set_affinity,
-#endif
-	.irq_set_wake		= gic_set_wake,
-};
-
-void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
-{
-	if (gic_nr >= MAX_GIC_NR)
-		BUG();
-	if (irq_set_handler_data(irq, &gic_data[gic_nr]) != 0)
-		BUG();
-	irq_set_chained_handler(irq, gic_handle_cascade_irq);
-}
-
-static void __init gic_dist_init(struct gic_chip_data *gic,
-	unsigned int irq_start)
-{
-	unsigned int gic_irqs, irq_limit, i;
-	void __iomem *base = gic->dist_base;
-	u32 cpumask = 1 << smp_processor_id();
-
-	cpumask |= cpumask << 8;
-	cpumask |= cpumask << 16;
-
-	writel(0, base + GIC_DIST_CTRL);
-
-	/*
-	 * Find out how many interrupts are supported.
-	 * The GIC only supports up to 1020 interrupt sources.
-	 */
-	gic_irqs = readl(base + GIC_DIST_CTR) & 0x1f;
-	gic_irqs = (gic_irqs + 1) * 32;
-	if (gic_irqs > 1020)
-		gic_irqs = 1020;
-
-	/*
-	 * Set all global interrupts to be level triggered, active low.
-	 */
-	for (i = 32; i < gic_irqs; i += 16)
-		writel(0, base + GIC_DIST_CONFIG + i * 4 / 16);
-
-	/*
-	 * Set all global interrupts to this CPU only.
-	 */
-	for (i = 32; i < gic_irqs; i += 4)
-		writel(cpumask, base + GIC_DIST_TARGET + i * 4 / 4);
-
-	/*
-	 * Set priority on all global interrupts.
-	 */
-	for (i = 32; i < gic_irqs; i += 4)
-		writel(0xa0a0a0a0, base + GIC_DIST_PRI + i * 4 / 4);
-
-	/*
-	 * Disable all interrupts.  Leave the PPI and SGIs alone
-	 * as these enables are banked registers.
-	 */
-	for (i = 32; i < gic_irqs; i += 32)
-		writel(0xffffffff, base + GIC_DIST_ENABLE_CLEAR + i * 4 / 32);
-
-	/*
-	 * Limit number of interrupts registered to the platform maximum
-	 */
-	irq_limit = gic->irq_offset + gic_irqs;
-	if (WARN_ON(irq_limit > NR_IRQS))
-		irq_limit = NR_IRQS;
-
-	/*
-	 * Setup the Linux IRQ subsystem.
-	 */
-	for (i = irq_start; i < irq_limit; i++) {
-		irq_set_chip_and_handler(i, &gic_chip, handle_level_irq);
-		irq_set_chip_data(i, gic);
-		set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
-	}
-
-	writel(1, base + GIC_DIST_CTRL);
-}
-
-static void __cpuinit gic_cpu_init(struct gic_chip_data *gic)
-{
-	void __iomem *dist_base = gic->dist_base;
-	void __iomem *base = gic->cpu_base;
-	int i;
-
-	/*
-	 * Deal with the banked PPI and SGI interrupts - disable all
-	 * PPI interrupts, ensure all SGI interrupts are enabled.
-	 */
-	writel(0xffff0000, dist_base + GIC_DIST_ENABLE_CLEAR);
-	writel(0x0000ffff, dist_base + GIC_DIST_ENABLE_SET);
-
-	/*
-	 * Set priority on PPI and SGI interrupts
-	 */
-	for (i = 0; i < 32; i += 4)
-		writel(0xa0a0a0a0, dist_base + GIC_DIST_PRI + i * 4 / 4);
-
-	writel(0xf0, base + GIC_CPU_PRIMASK);
-	writel(1, base + GIC_CPU_CTRL);
-}
-
-void __init gic_init(unsigned int gic_nr, unsigned int irq_start,
-	void __iomem *dist_base, void __iomem *cpu_base)
-{
-	struct gic_chip_data *gic;
-
-	BUG_ON(gic_nr >= MAX_GIC_NR);
-
-	gic = &gic_data[gic_nr];
-	gic->dist_base = dist_base;
-	gic->cpu_base = cpu_base;
-	gic->irq_offset = (irq_start - 1) & ~31;
-
-	if (gic_nr == 0)
-		gic_cpu_base_addr = cpu_base;
-
-	gic_dist_init(gic, irq_start);
-	gic_cpu_init(gic);
-}
-
-void __cpuinit gic_secondary_init(unsigned int gic_nr)
-{
-	BUG_ON(gic_nr >= MAX_GIC_NR);
-
-	gic_cpu_init(&gic_data[gic_nr]);
-}
-
-void __cpuinit gic_enable_ppi(unsigned int irq)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	irq_set_status_flags(irq, IRQ_NOPROBE);
-	gic_unmask_irq(irq_get_irq_data(irq));
-	local_irq_restore(flags);
-}
-
-#ifdef CONFIG_SMP
-void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
-{
-	unsigned long map = *cpus_addr(*mask);
-
-	/* this always happens on GIC0 */
-	writel(map << 16 | irq, gic_data[0].dist_base + GIC_DIST_SOFTINT);
-}
-#endif