irqchip: Move ARM GIC to drivers/irqchip

Now that we have drivers/irqchip, move GIC irqchip to drivers/irqchip. This
is necessary to share the GIC with arm and arm64.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>

3 files changed, 0 insertions, 826 deletions

diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index 45ceeb0e93e..7bf52b2b7d3 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -1,11 +1,3 @@
-config ARM_GIC
-	bool
-	select IRQ_DOMAIN
-	select MULTI_IRQ_HANDLER
-
-config GIC_NON_BANKED
-	bool
-
 config ARM_VIC
 	bool
 	select IRQ_DOMAIN
diff --git a/arch/arm/common/Makefile b/arch/arm/common/Makefile
index e8a4e58f1b8..4104b821f86 100644
--- a/arch/arm/common/Makefile
+++ b/arch/arm/common/Makefile
@@ -2,7 +2,6 @@
 # Makefile for the linux kernel.
 #
 
-obj-$(CONFIG_ARM_GIC)		+= gic.o
 obj-$(CONFIG_ARM_VIC)		+= vic.o
 obj-$(CONFIG_ICST)		+= icst.o
 obj-$(CONFIG_SA1111)		+= sa1111.o
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
deleted file mode 100644
index 90eebfeae03..00000000000
--- a/arch/arm/common/gic.c
+++ /dev/null
@@ -1,817 +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/err.h>
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/smp.h>
-#include <linux/cpu_pm.h>
-#include <linux/cpumask.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/irqdomain.h>
-#include <linux/interrupt.h>
-#include <linux/percpu.h>
-#include <linux/slab.h>
-
-#include <asm/irq.h>
-#include <asm/exception.h>
-#include <asm/smp_plat.h>
-#include <asm/mach/irq.h>
-#include <asm/hardware/gic.h>
-
-union gic_base {
-	void __iomem *common_base;
-	void __percpu __iomem **percpu_base;
-};
-
-struct gic_chip_data {
-	union gic_base dist_base;
-	union gic_base cpu_base;
-#ifdef CONFIG_CPU_PM
-	u32 saved_spi_enable[DIV_ROUND_UP(1020, 32)];
-	u32 saved_spi_conf[DIV_ROUND_UP(1020, 16)];
-	u32 saved_spi_target[DIV_ROUND_UP(1020, 4)];
-	u32 __percpu *saved_ppi_enable;
-	u32 __percpu *saved_ppi_conf;
-#endif
-	struct irq_domain *domain;
-	unsigned int gic_irqs;
-#ifdef CONFIG_GIC_NON_BANKED
-	void __iomem *(*get_base)(union gic_base *);
-#endif
-};
-
-static DEFINE_RAW_SPINLOCK(irq_controller_lock);
-
-/*
- * The GIC mapping of CPU interfaces does not necessarily match
- * the logical CPU numbering.  Let's use a mapping as returned
- * by the GIC itself.
- */
-#define NR_GIC_CPU_IF 8
-static u8 gic_cpu_map[NR_GIC_CPU_IF] __read_mostly;
-
-/*
- * Supported arch specific GIC irq extension.
- * Default make them NULL.
- */
-struct irq_chip gic_arch_extn = {
-	.irq_eoi	= 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;
-
-#ifdef CONFIG_GIC_NON_BANKED
-static void __iomem *gic_get_percpu_base(union gic_base *base)
-{
-	return *__this_cpu_ptr(base->percpu_base);
-}
-
-static void __iomem *gic_get_common_base(union gic_base *base)
-{
-	return base->common_base;
-}
-
-static inline void __iomem *gic_data_dist_base(struct gic_chip_data *data)
-{
-	return data->get_base(&data->dist_base);
-}
-
-static inline void __iomem *gic_data_cpu_base(struct gic_chip_data *data)
-{
-	return data->get_base(&data->cpu_base);
-}
-
-static inline void gic_set_base_accessor(struct gic_chip_data *data,
-					 void __iomem *(*f)(union gic_base *))
-{
-	data->get_base = f;
-}
-#else
-#define gic_data_dist_base(d)	((d)->dist_base.common_base)
-#define gic_data_cpu_base(d)	((d)->cpu_base.common_base)
-#define gic_set_base_accessor(d,f)
-#endif
-
-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(gic_data);
-}
-
-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(gic_data);
-}
-
-static inline unsigned int gic_irq(struct irq_data *d)
-{
-	return d->hwirq;
-}
-
-/*
- * Routines to acknowledge, disable and enable interrupts
- */
-static void gic_mask_irq(struct irq_data *d)
-{
-	u32 mask = 1 << (gic_irq(d) % 32);
-
-	raw_spin_lock(&irq_controller_lock);
-	writel_relaxed(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);
-	raw_spin_unlock(&irq_controller_lock);
-}
-
-static void gic_unmask_irq(struct irq_data *d)
-{
-	u32 mask = 1 << (gic_irq(d) % 32);
-
-	raw_spin_lock(&irq_controller_lock);
-	if (gic_arch_extn.irq_unmask)
-		gic_arch_extn.irq_unmask(d);
-	writel_relaxed(mask, gic_dist_base(d) + GIC_DIST_ENABLE_SET + (gic_irq(d) / 32) * 4);
-	raw_spin_unlock(&irq_controller_lock);
-}
-
-static void gic_eoi_irq(struct irq_data *d)
-{
-	if (gic_arch_extn.irq_eoi) {
-		raw_spin_lock(&irq_controller_lock);
-		gic_arch_extn.irq_eoi(d);
-		raw_spin_unlock(&irq_controller_lock);
-	}
-
-	writel_relaxed(gic_irq(d), gic_cpu_base(d) + GIC_CPU_EOI);
-}
-
-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;
-
-	raw_spin_lock(&irq_controller_lock);
-
-	if (gic_arch_extn.irq_set_type)
-		gic_arch_extn.irq_set_type(d, type);
-
-	val = readl_relaxed(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_relaxed(base + GIC_DIST_ENABLE_SET + enableoff) & enablemask) {
-		writel_relaxed(enablemask, base + GIC_DIST_ENABLE_CLEAR + enableoff);
-		enabled = true;
-	}
-
-	writel_relaxed(val, base + GIC_DIST_CONFIG + confoff);
-
-	if (enabled)
-		writel_relaxed(enablemask, base + GIC_DIST_ENABLE_SET + enableoff);
-
-	raw_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 = (gic_irq(d) % 4) * 8;
-	unsigned int cpu = cpumask_any_and(mask_val, cpu_online_mask);
-	u32 val, mask, bit;
-
-	if (cpu >= NR_GIC_CPU_IF || cpu >= nr_cpu_ids)
-		return -EINVAL;
-
-	mask = 0xff << shift;
-	bit = gic_cpu_map[cpu] << shift;
-
-	raw_spin_lock(&irq_controller_lock);
-	val = readl_relaxed(reg) & ~mask;
-	writel_relaxed(val | bit, reg);
-	raw_spin_unlock(&irq_controller_lock);
-
-	return IRQ_SET_MASK_OK;
-}
-#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 asmlinkage void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
-{
-	u32 irqstat, irqnr;
-	struct gic_chip_data *gic = &gic_data[0];
-	void __iomem *cpu_base = gic_data_cpu_base(gic);
-
-	do {
-		irqstat = readl_relaxed(cpu_base + GIC_CPU_INTACK);
-		irqnr = irqstat & ~0x1c00;
-
-		if (likely(irqnr > 15 && irqnr < 1021)) {
-			irqnr = irq_find_mapping(gic->domain, irqnr);
-			handle_IRQ(irqnr, regs);
-			continue;
-		}
-		if (irqnr < 16) {
-			writel_relaxed(irqstat, cpu_base + GIC_CPU_EOI);
-#ifdef CONFIG_SMP
-			handle_IPI(irqnr, regs);
-#endif
-			continue;
-		}
-		break;
-	} while (1);
-}
-
-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;
-
-	chained_irq_enter(chip, desc);
-
-	raw_spin_lock(&irq_controller_lock);
-	status = readl_relaxed(gic_data_cpu_base(chip_data) + GIC_CPU_INTACK);
-	raw_spin_unlock(&irq_controller_lock);
-
-	gic_irq = (status & 0x3ff);
-	if (gic_irq == 1023)
-		goto out;
-
-	cascade_irq = irq_find_mapping(chip_data->domain, gic_irq);
-	if (unlikely(gic_irq < 32 || gic_irq > 1020))
-		do_bad_IRQ(cascade_irq, desc);
-	else
-		generic_handle_irq(cascade_irq);
-
- out:
-	chained_irq_exit(chip, desc);
-}
-
-static struct irq_chip gic_chip = {
-	.name			= "GIC",
-	.irq_mask		= gic_mask_irq,
-	.irq_unmask		= gic_unmask_irq,
-	.irq_eoi		= gic_eoi_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 i;
-	u32 cpumask;
-	unsigned int gic_irqs = gic->gic_irqs;
-	void __iomem *base = gic_data_dist_base(gic);
-
-	writel_relaxed(0, base + GIC_DIST_CTRL);
-
-	/*
-	 * Set all global interrupts to be level triggered, active low.
-	 */
-	for (i = 32; i < gic_irqs; i += 16)
-		writel_relaxed(0, base + GIC_DIST_CONFIG + i * 4 / 16);
-
-	/*
-	 * Set all global interrupts to this CPU only.
-	 */
-	cpumask = readl_relaxed(base + GIC_DIST_TARGET + 0);
-	for (i = 32; i < gic_irqs; i += 4)
-		writel_relaxed(cpumask, base + GIC_DIST_TARGET + i * 4 / 4);
-
-	/*
-	 * Set priority on all global interrupts.
-	 */
-	for (i = 32; i < gic_irqs; i += 4)
-		writel_relaxed(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_relaxed(0xffffffff, base + GIC_DIST_ENABLE_CLEAR + i * 4 / 32);
-
-	writel_relaxed(1, base + GIC_DIST_CTRL);
-}
-
-static void __cpuinit gic_cpu_init(struct gic_chip_data *gic)
-{
-	void __iomem *dist_base = gic_data_dist_base(gic);
-	void __iomem *base = gic_data_cpu_base(gic);
-	unsigned int cpu_mask, cpu = smp_processor_id();
-	int i;
-
-	/*
-	 * Get what the GIC says our CPU mask is.
-	 */
-	BUG_ON(cpu >= NR_GIC_CPU_IF);
-	cpu_mask = readl_relaxed(dist_base + GIC_DIST_TARGET + 0);
-	gic_cpu_map[cpu] = cpu_mask;
-
-	/*
-	 * Clear our mask from the other map entries in case they're
-	 * still undefined.
-	 */
-	for (i = 0; i < NR_GIC_CPU_IF; i++)
-		if (i != cpu)
-			gic_cpu_map[i] &= ~cpu_mask;
-
-	/*
-	 * Deal with the banked PPI and SGI interrupts - disable all
-	 * PPI interrupts, ensure all SGI interrupts are enabled.
-	 */
-	writel_relaxed(0xffff0000, dist_base + GIC_DIST_ENABLE_CLEAR);
-	writel_relaxed(0x0000ffff, dist_base + GIC_DIST_ENABLE_SET);
-
-	/*
-	 * Set priority on PPI and SGI interrupts
-	 */
-	for (i = 0; i < 32; i += 4)
-		writel_relaxed(0xa0a0a0a0, dist_base + GIC_DIST_PRI + i * 4 / 4);
-
-	writel_relaxed(0xf0, base + GIC_CPU_PRIMASK);
-	writel_relaxed(1, base + GIC_CPU_CTRL);
-}
-
-#ifdef CONFIG_CPU_PM
-/*
- * Saves the GIC distributor registers during suspend or idle.  Must be called
- * with interrupts disabled but before powering down the GIC.  After calling
- * this function, no interrupts will be delivered by the GIC, and another
- * platform-specific wakeup source must be enabled.
- */
-static void gic_dist_save(unsigned int gic_nr)
-{
-	unsigned int gic_irqs;
-	void __iomem *dist_base;
-	int i;
-
-	if (gic_nr >= MAX_GIC_NR)
-		BUG();
-
-	gic_irqs = gic_data[gic_nr].gic_irqs;
-	dist_base = gic_data_dist_base(&gic_data[gic_nr]);
-
-	if (!dist_base)
-		return;
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 16); i++)
-		gic_data[gic_nr].saved_spi_conf[i] =
-			readl_relaxed(dist_base + GIC_DIST_CONFIG + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 4); i++)
-		gic_data[gic_nr].saved_spi_target[i] =
-			readl_relaxed(dist_base + GIC_DIST_TARGET + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 32); i++)
-		gic_data[gic_nr].saved_spi_enable[i] =
-			readl_relaxed(dist_base + GIC_DIST_ENABLE_SET + i * 4);
-}
-
-/*
- * Restores the GIC distributor registers during resume or when coming out of
- * idle.  Must be called before enabling interrupts.  If a level interrupt
- * that occured while the GIC was suspended is still present, it will be
- * handled normally, but any edge interrupts that occured will not be seen by
- * the GIC and need to be handled by the platform-specific wakeup source.
- */
-static void gic_dist_restore(unsigned int gic_nr)
-{
-	unsigned int gic_irqs;
-	unsigned int i;
-	void __iomem *dist_base;
-
-	if (gic_nr >= MAX_GIC_NR)
-		BUG();
-
-	gic_irqs = gic_data[gic_nr].gic_irqs;
-	dist_base = gic_data_dist_base(&gic_data[gic_nr]);
-
-	if (!dist_base)
-		return;
-
-	writel_relaxed(0, dist_base + GIC_DIST_CTRL);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 16); i++)
-		writel_relaxed(gic_data[gic_nr].saved_spi_conf[i],
-			dist_base + GIC_DIST_CONFIG + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 4); i++)
-		writel_relaxed(0xa0a0a0a0,
-			dist_base + GIC_DIST_PRI + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 4); i++)
-		writel_relaxed(gic_data[gic_nr].saved_spi_target[i],
-			dist_base + GIC_DIST_TARGET + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(gic_irqs, 32); i++)
-		writel_relaxed(gic_data[gic_nr].saved_spi_enable[i],
-			dist_base + GIC_DIST_ENABLE_SET + i * 4);
-
-	writel_relaxed(1, dist_base + GIC_DIST_CTRL);
-}
-
-static void gic_cpu_save(unsigned int gic_nr)
-{
-	int i;
-	u32 *ptr;
-	void __iomem *dist_base;
-	void __iomem *cpu_base;
-
-	if (gic_nr >= MAX_GIC_NR)
-		BUG();
-
-	dist_base = gic_data_dist_base(&gic_data[gic_nr]);
-	cpu_base = gic_data_cpu_base(&gic_data[gic_nr]);
-
-	if (!dist_base || !cpu_base)
-		return;
-
-	ptr = __this_cpu_ptr(gic_data[gic_nr].saved_ppi_enable);
-	for (i = 0; i < DIV_ROUND_UP(32, 32); i++)
-		ptr[i] = readl_relaxed(dist_base + GIC_DIST_ENABLE_SET + i * 4);
-
-	ptr = __this_cpu_ptr(gic_data[gic_nr].saved_ppi_conf);
-	for (i = 0; i < DIV_ROUND_UP(32, 16); i++)
-		ptr[i] = readl_relaxed(dist_base + GIC_DIST_CONFIG + i * 4);
-
-}
-
-static void gic_cpu_restore(unsigned int gic_nr)
-{
-	int i;
-	u32 *ptr;
-	void __iomem *dist_base;
-	void __iomem *cpu_base;
-
-	if (gic_nr >= MAX_GIC_NR)
-		BUG();
-
-	dist_base = gic_data_dist_base(&gic_data[gic_nr]);
-	cpu_base = gic_data_cpu_base(&gic_data[gic_nr]);
-
-	if (!dist_base || !cpu_base)
-		return;
-
-	ptr = __this_cpu_ptr(gic_data[gic_nr].saved_ppi_enable);
-	for (i = 0; i < DIV_ROUND_UP(32, 32); i++)
-		writel_relaxed(ptr[i], dist_base + GIC_DIST_ENABLE_SET + i * 4);
-
-	ptr = __this_cpu_ptr(gic_data[gic_nr].saved_ppi_conf);
-	for (i = 0; i < DIV_ROUND_UP(32, 16); i++)
-		writel_relaxed(ptr[i], dist_base + GIC_DIST_CONFIG + i * 4);
-
-	for (i = 0; i < DIV_ROUND_UP(32, 4); i++)
-		writel_relaxed(0xa0a0a0a0, dist_base + GIC_DIST_PRI + i * 4);
-
-	writel_relaxed(0xf0, cpu_base + GIC_CPU_PRIMASK);
-	writel_relaxed(1, cpu_base + GIC_CPU_CTRL);
-}
-
-static int gic_notifier(struct notifier_block *self, unsigned long cmd,	void *v)
-{
-	int i;
-
-	for (i = 0; i < MAX_GIC_NR; i++) {
-#ifdef CONFIG_GIC_NON_BANKED
-		/* Skip over unused GICs */
-		if (!gic_data[i].get_base)
-			continue;
-#endif
-		switch (cmd) {
-		case CPU_PM_ENTER:
-			gic_cpu_save(i);
-			break;
-		case CPU_PM_ENTER_FAILED:
-		case CPU_PM_EXIT:
-			gic_cpu_restore(i);
-			break;
-		case CPU_CLUSTER_PM_ENTER:
-			gic_dist_save(i);
-			break;
-		case CPU_CLUSTER_PM_ENTER_FAILED:
-		case CPU_CLUSTER_PM_EXIT:
-			gic_dist_restore(i);
-			break;
-		}
-	}
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block gic_notifier_block = {
-	.notifier_call = gic_notifier,
-};
-
-static void __init gic_pm_init(struct gic_chip_data *gic)
-{
-	gic->saved_ppi_enable = __alloc_percpu(DIV_ROUND_UP(32, 32) * 4,
-		sizeof(u32));
-	BUG_ON(!gic->saved_ppi_enable);
-
-	gic->saved_ppi_conf = __alloc_percpu(DIV_ROUND_UP(32, 16) * 4,
-		sizeof(u32));
-	BUG_ON(!gic->saved_ppi_conf);
-
-	if (gic == &gic_data[0])
-		cpu_pm_register_notifier(&gic_notifier_block);
-}
-#else
-static void __init gic_pm_init(struct gic_chip_data *gic)
-{
-}
-#endif
-
-#ifdef CONFIG_SMP
-void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
-{
-	int cpu;
-	unsigned long map = 0;
-
-	/* Convert our logical CPU mask into a physical one. */
-	for_each_cpu(cpu, mask)
-		map |= 1 << cpu_logical_map(cpu);
-
-	/*
-	 * Ensure that stores to Normal memory are visible to the
-	 * other CPUs before issuing the IPI.
-	 */
-	dsb();
-
-	/* this always happens on GIC0 */
-	writel_relaxed(map << 16 | irq, gic_data_dist_base(&gic_data[0]) + GIC_DIST_SOFTINT);
-}
-#endif
-
-static int gic_irq_domain_map(struct irq_domain *d, unsigned int irq,
-				irq_hw_number_t hw)
-{
-	if (hw < 32) {
-		irq_set_percpu_devid(irq);
-		irq_set_chip_and_handler(irq, &gic_chip,
-					 handle_percpu_devid_irq);
-		set_irq_flags(irq, IRQF_VALID | IRQF_NOAUTOEN);
-	} else {
-		irq_set_chip_and_handler(irq, &gic_chip,
-					 handle_fasteoi_irq);
-		set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
-	}
-	irq_set_chip_data(irq, d->host_data);
-	return 0;
-}
-
-static int gic_irq_domain_xlate(struct irq_domain *d,
-				struct device_node *controller,
-				const u32 *intspec, unsigned int intsize,
-				unsigned long *out_hwirq, unsigned int *out_type)
-{
-	if (d->of_node != controller)
-		return -EINVAL;
-	if (intsize < 3)
-		return -EINVAL;
-
-	/* Get the interrupt number and add 16 to skip over SGIs */
-	*out_hwirq = intspec[1] + 16;
-
-	/* For SPIs, we need to add 16 more to get the GIC irq ID number */
-	if (!intspec[0])
-		*out_hwirq += 16;
-
-	*out_type = intspec[2] & IRQ_TYPE_SENSE_MASK;
-	return 0;
-}
-
-const struct irq_domain_ops gic_irq_domain_ops = {
-	.map = gic_irq_domain_map,
-	.xlate = gic_irq_domain_xlate,
-};
-
-void __init gic_init_bases(unsigned int gic_nr, int irq_start,
-			   void __iomem *dist_base, void __iomem *cpu_base,
-			   u32 percpu_offset, struct device_node *node)
-{
-	irq_hw_number_t hwirq_base;
-	struct gic_chip_data *gic;
-	int gic_irqs, irq_base, i;
-
-	BUG_ON(gic_nr >= MAX_GIC_NR);
-
-	gic = &gic_data[gic_nr];
-#ifdef CONFIG_GIC_NON_BANKED
-	if (percpu_offset) { /* Frankein-GIC without banked registers... */
-		unsigned int cpu;
-
-		gic->dist_base.percpu_base = alloc_percpu(void __iomem *);
-		gic->cpu_base.percpu_base = alloc_percpu(void __iomem *);
-		if (WARN_ON(!gic->dist_base.percpu_base ||
-			    !gic->cpu_base.percpu_base)) {
-			free_percpu(gic->dist_base.percpu_base);
-			free_percpu(gic->cpu_base.percpu_base);
-			return;
-		}
-
-		for_each_possible_cpu(cpu) {
-			unsigned long offset = percpu_offset * cpu_logical_map(cpu);
-			*per_cpu_ptr(gic->dist_base.percpu_base, cpu) = dist_base + offset;
-			*per_cpu_ptr(gic->cpu_base.percpu_base, cpu) = cpu_base + offset;
-		}
-
-		gic_set_base_accessor(gic, gic_get_percpu_base);
-	} else
-#endif
-	{			/* Normal, sane GIC... */
-		WARN(percpu_offset,
-		     "GIC_NON_BANKED not enabled, ignoring %08x offset!",
-		     percpu_offset);
-		gic->dist_base.common_base = dist_base;
-		gic->cpu_base.common_base = cpu_base;
-		gic_set_base_accessor(gic, gic_get_common_base);
-	}
-
-	/*
-	 * Initialize the CPU interface map to all CPUs.
-	 * It will be refined as each CPU probes its ID.
-	 */
-	for (i = 0; i < NR_GIC_CPU_IF; i++)
-		gic_cpu_map[i] = 0xff;
-
-	/*
-	 * For primary GICs, skip over SGIs.
-	 * For secondary GICs, skip over PPIs, too.
-	 */
-	if (gic_nr == 0 && (irq_start & 31) > 0) {
-		hwirq_base = 16;
-		if (irq_start != -1)
-			irq_start = (irq_start & ~31) + 16;
-	} else {
-		hwirq_base = 32;
-	}
-
-	/*
-	 * Find out how many interrupts are supported.
-	 * The GIC only supports up to 1020 interrupt sources.
-	 */
-	gic_irqs = readl_relaxed(gic_data_dist_base(gic) + GIC_DIST_CTR) & 0x1f;
-	gic_irqs = (gic_irqs + 1) * 32;
-	if (gic_irqs > 1020)
-		gic_irqs = 1020;
-	gic->gic_irqs = gic_irqs;
-
-	gic_irqs -= hwirq_base; /* calculate # of irqs to allocate */
-	irq_base = irq_alloc_descs(irq_start, 16, gic_irqs, numa_node_id());
-	if (IS_ERR_VALUE(irq_base)) {
-		WARN(1, "Cannot allocate irq_descs @ IRQ%d, assuming pre-allocated\n",
-		     irq_start);
-		irq_base = irq_start;
-	}
-	gic->domain = irq_domain_add_legacy(node, gic_irqs, irq_base,
-				    hwirq_base, &gic_irq_domain_ops, gic);
-	if (WARN_ON(!gic->domain))
-		return;
-
-#ifdef CONFIG_SMP
-	set_smp_cross_call(gic_raise_softirq);
-#endif
-
-	set_handle_irq(gic_handle_irq);
-
-	gic_chip.flags |= gic_arch_extn.flags;
-	gic_dist_init(gic);
-	gic_cpu_init(gic);
-	gic_pm_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]);
-}
-
-#ifdef CONFIG_OF
-static int gic_cnt __initdata = 0;
-
-int __init gic_of_init(struct device_node *node, struct device_node *parent)
-{
-	void __iomem *cpu_base;
-	void __iomem *dist_base;
-	u32 percpu_offset;
-	int irq;
-
-	if (WARN_ON(!node))
-		return -ENODEV;
-
-	dist_base = of_iomap(node, 0);
-	WARN(!dist_base, "unable to map gic dist registers\n");
-
-	cpu_base = of_iomap(node, 1);
-	WARN(!cpu_base, "unable to map gic cpu registers\n");
-
-	if (of_property_read_u32(node, "cpu-offset", &percpu_offset))
-		percpu_offset = 0;
-
-	gic_init_bases(gic_cnt, -1, dist_base, cpu_base, percpu_offset, node);
-
-	if (parent) {
-		irq = irq_of_parse_and_map(node, 0);
-		gic_cascade_irq(gic_cnt, irq);
-	}
-	gic_cnt++;
-	return 0;
-}
-#endif