1 files changed, 0 insertions, 760 deletions

diff --git a/arch/powerpc/platforms/wsp/ics.c b/arch/powerpc/platforms/wsp/ics.c
deleted file mode 100644
index 2d3b1dd9571..00000000000
--- a/arch/powerpc/platforms/wsp/ics.c
+++ /dev/null
@@ -1,760 +0,0 @@
-/*
- * Copyright 2008-2011 IBM Corporation.
- *
- *  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.
- */
-
-#include <linux/cpu.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kernel.h>
-#include <linux/msi.h>
-#include <linux/of.h>
-#include <linux/slab.h>
-#include <linux/smp.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/xics.h>
-
-#include "wsp.h"
-#include "ics.h"
-
-
-/* WSP ICS */
-
-struct wsp_ics {
-	struct ics ics;
-	struct device_node *dn;
-	void __iomem *regs;
-	spinlock_t lock;
-	unsigned long *bitmap;
-	u32 chip_id;
-	u32 lsi_base;
-	u32 lsi_count;
-	u64 hwirq_start;
-	u64 count;
-#ifdef CONFIG_SMP
-	int *hwirq_cpu_map;
-#endif
-};
-
-#define to_wsp_ics(ics)	container_of(ics, struct wsp_ics, ics)
-
-#define INT_SRC_LAYER_BUID_REG(base)	((base) + 0x00)
-#define IODA_TBL_ADDR_REG(base)		((base) + 0x18)
-#define IODA_TBL_DATA_REG(base)		((base) + 0x20)
-#define XIVE_UPDATE_REG(base)		((base) + 0x28)
-#define ICS_INT_CAPS_REG(base)		((base) + 0x30)
-
-#define TBL_AUTO_INCREMENT	((1UL << 63) | (1UL << 15))
-#define TBL_SELECT_XIST		(1UL << 48)
-#define TBL_SELECT_XIVT		(1UL << 49)
-
-#define IODA_IRQ(irq)		((irq) & (0x7FFULL))	/* HRM 5.1.3.4 */
-
-#define XIST_REQUIRED		0x8
-#define XIST_REJECTED		0x4
-#define XIST_PRESENTED		0x2
-#define XIST_PENDING		0x1
-
-#define XIVE_SERVER_SHIFT	42
-#define XIVE_SERVER_MASK	0xFFFFULL
-#define XIVE_PRIORITY_MASK	0xFFULL
-#define XIVE_PRIORITY_SHIFT	32
-#define XIVE_WRITE_ENABLE	(1ULL << 63)
-
-/*
- * The docs refer to a 6 bit field called ChipID, which consists of a
- * 3 bit NodeID and a 3 bit ChipID. On WSP the ChipID is always zero
- * so we ignore it, and every where we use "chip id" in this code we
- * mean the NodeID.
- */
-#define WSP_ICS_CHIP_SHIFT		17
-
-
-static struct wsp_ics *ics_list;
-static int num_ics;
-
-/* ICS Source controller accessors */
-
-static u64 wsp_ics_get_xive(struct wsp_ics *ics, unsigned int irq)
-{
-	unsigned long flags;
-	u64 xive;
-
-	spin_lock_irqsave(&ics->lock, flags);
-	out_be64(IODA_TBL_ADDR_REG(ics->regs), TBL_SELECT_XIVT | IODA_IRQ(irq));
-	xive = in_be64(IODA_TBL_DATA_REG(ics->regs));
-	spin_unlock_irqrestore(&ics->lock, flags);
-
-	return xive;
-}
-
-static void wsp_ics_set_xive(struct wsp_ics *ics, unsigned int irq, u64 xive)
-{
-	xive &= ~XIVE_ADDR_MASK;
-	xive |= (irq & XIVE_ADDR_MASK);
-	xive |= XIVE_WRITE_ENABLE;
-
-	out_be64(XIVE_UPDATE_REG(ics->regs), xive);
-}
-
-static u64 xive_set_server(u64 xive, unsigned int server)
-{
-	u64 mask = ~(XIVE_SERVER_MASK << XIVE_SERVER_SHIFT);
-
-	xive &= mask;
-	xive |= (server & XIVE_SERVER_MASK) << XIVE_SERVER_SHIFT;
-
-	return xive;
-}
-
-static u64 xive_set_priority(u64 xive, unsigned int priority)
-{
-	u64 mask = ~(XIVE_PRIORITY_MASK << XIVE_PRIORITY_SHIFT);
-
-	xive &= mask;
-	xive |= (priority & XIVE_PRIORITY_MASK) << XIVE_PRIORITY_SHIFT;
-
-	return xive;
-}
-
-
-#ifdef CONFIG_SMP
-/* Find logical CPUs within mask on a given chip and store result in ret */
-void cpus_on_chip(int chip_id, cpumask_t *mask, cpumask_t *ret)
-{
-	int cpu, chip;
-	struct device_node *cpu_dn, *dn;
-	const u32 *prop;
-
-	cpumask_clear(ret);
-	for_each_cpu(cpu, mask) {
-		cpu_dn = of_get_cpu_node(cpu, NULL);
-		if (!cpu_dn)
-			continue;
-
-		prop = of_get_property(cpu_dn, "at-node", NULL);
-		if (!prop) {
-			of_node_put(cpu_dn);
-			continue;
-		}
-
-		dn = of_find_node_by_phandle(*prop);
-		of_node_put(cpu_dn);
-
-		chip = wsp_get_chip_id(dn);
-		if (chip == chip_id)
-			cpumask_set_cpu(cpu, ret);
-
-		of_node_put(dn);
-	}
-}
-
-/* Store a suitable CPU to handle a hwirq in the ics->hwirq_cpu_map cache */
-static int cache_hwirq_map(struct wsp_ics *ics, unsigned int hwirq,
-			   const cpumask_t *affinity)
-{
-	cpumask_var_t avail, newmask;
-	int ret = -ENOMEM, cpu, cpu_rover = 0, target;
-	int index = hwirq - ics->hwirq_start;
-	unsigned int nodeid;
-
-	BUG_ON(index < 0 || index >= ics->count);
-
-	if (!ics->hwirq_cpu_map)
-		return -ENOMEM;
-
-	if (!distribute_irqs) {
-		ics->hwirq_cpu_map[hwirq - ics->hwirq_start] = xics_default_server;
-		return 0;
-	}
-
-	/* Allocate needed CPU masks */
-	if (!alloc_cpumask_var(&avail, GFP_KERNEL))
-		goto ret;
-	if (!alloc_cpumask_var(&newmask, GFP_KERNEL))
-		goto freeavail;
-
-	/* Find PBus attached to the source of this IRQ */
-	nodeid = (hwirq >> WSP_ICS_CHIP_SHIFT) & 0x3; /* 12:14 */
-
-	/* Find CPUs that could handle this IRQ */
-	if (affinity)
-		cpumask_and(avail, cpu_online_mask, affinity);
-	else
-		cpumask_copy(avail, cpu_online_mask);
-
-	/* Narrow selection down to logical CPUs on the same chip */
-	cpus_on_chip(nodeid, avail, newmask);
-
-	/* Ensure we haven't narrowed it down to 0 */
-	if (unlikely(cpumask_empty(newmask))) {
-		if (unlikely(cpumask_empty(avail))) {
-			ret = -1;
-			goto out;
-		}
-		cpumask_copy(newmask, avail);
-	}
-
-	/* Choose a CPU out of those we narrowed it down to in round robin */
-	target = hwirq % cpumask_weight(newmask);
-	for_each_cpu(cpu, newmask) {
-		if (cpu_rover++ >= target) {
-			ics->hwirq_cpu_map[index] = get_hard_smp_processor_id(cpu);
-			ret = 0;
-			goto out;
-		}
-	}
-
-	/* Shouldn't happen */
-	WARN_ON(1);
-
-out:
-	free_cpumask_var(newmask);
-freeavail:
-	free_cpumask_var(avail);
-ret:
-	if (ret < 0) {
-		ics->hwirq_cpu_map[index] = cpumask_first(cpu_online_mask);
-		pr_warning("Error, falling hwirq 0x%x routing back to CPU %i\n",
-			   hwirq, ics->hwirq_cpu_map[index]);
-	}
-	return ret;
-}
-
-static void alloc_irq_map(struct wsp_ics *ics)
-{
-	int i;
-
-	ics->hwirq_cpu_map = kmalloc(sizeof(int) * ics->count, GFP_KERNEL);
-	if (!ics->hwirq_cpu_map) {
-		pr_warning("Allocate hwirq_cpu_map failed, "
-			   "IRQ balancing disabled\n");
-		return;
-	}
-
-	for (i=0; i < ics->count; i++)
-		ics->hwirq_cpu_map[i] = xics_default_server;
-}
-
-static int get_irq_server(struct wsp_ics *ics, unsigned int hwirq)
-{
-	int index = hwirq - ics->hwirq_start;
-
-	BUG_ON(index < 0 || index >= ics->count);
-
-	if (!ics->hwirq_cpu_map)
-		return xics_default_server;
-
-	return ics->hwirq_cpu_map[index];
-}
-#else /* !CONFIG_SMP */
-static int cache_hwirq_map(struct wsp_ics *ics, unsigned int hwirq,
-			   const cpumask_t *affinity)
-{
-	return 0;
-}
-
-static int get_irq_server(struct wsp_ics *ics, unsigned int hwirq)
-{
-	return xics_default_server;
-}
-
-static void alloc_irq_map(struct wsp_ics *ics) { }
-#endif
-
-static void wsp_chip_unmask_irq(struct irq_data *d)
-{
-	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
-	struct wsp_ics *ics;
-	int server;
-	u64 xive;
-
-	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
-		return;
-
-	ics = d->chip_data;
-	if (WARN_ON(!ics))
-		return;
-
-	server = get_irq_server(ics, hw_irq);
-
-	xive = wsp_ics_get_xive(ics, hw_irq);
-	xive = xive_set_server(xive, server);
-	xive = xive_set_priority(xive, DEFAULT_PRIORITY);
-	wsp_ics_set_xive(ics, hw_irq, xive);
-}
-
-static unsigned int wsp_chip_startup(struct irq_data *d)
-{
-	/* unmask it */
-	wsp_chip_unmask_irq(d);
-	return 0;
-}
-
-static void wsp_mask_real_irq(unsigned int hw_irq, struct wsp_ics *ics)
-{
-	u64 xive;
-
-	if (hw_irq == XICS_IPI)
-		return;
-
-	if (WARN_ON(!ics))
-		return;
-	xive = wsp_ics_get_xive(ics, hw_irq);
-	xive = xive_set_server(xive, xics_default_server);
-	xive = xive_set_priority(xive, LOWEST_PRIORITY);
-	wsp_ics_set_xive(ics, hw_irq, xive);
-}
-
-static void wsp_chip_mask_irq(struct irq_data *d)
-{
-	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
-	struct wsp_ics *ics = d->chip_data;
-
-	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
-		return;
-
-	wsp_mask_real_irq(hw_irq, ics);
-}
-
-static int wsp_chip_set_affinity(struct irq_data *d,
-				 const struct cpumask *cpumask, bool force)
-{
-	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
-	struct wsp_ics *ics;
-	int ret;
-	u64 xive;
-
-	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
-		return -1;
-
-	ics = d->chip_data;
-	if (WARN_ON(!ics))
-		return -1;
-	xive = wsp_ics_get_xive(ics, hw_irq);
-
-	/*
-	 * For the moment only implement delivery to all cpus or one cpu.
-	 * Get current irq_server for the given irq
-	 */
-	ret = cache_hwirq_map(ics, hw_irq, cpumask);
-	if (ret == -1) {
-		char cpulist[128];
-		cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
-		pr_warning("%s: No online cpus in the mask %s for irq %d\n",
-			   __func__, cpulist, d->irq);
-		return -1;
-	} else if (ret == -ENOMEM) {
-		pr_warning("%s: Out of memory\n", __func__);
-		return -1;
-	}
-
-	xive = xive_set_server(xive, get_irq_server(ics, hw_irq));
-	wsp_ics_set_xive(ics, hw_irq, xive);
-
-	return IRQ_SET_MASK_OK;
-}
-
-static struct irq_chip wsp_irq_chip = {
-	.name = "WSP ICS",
-	.irq_startup		= wsp_chip_startup,
-	.irq_mask		= wsp_chip_mask_irq,
-	.irq_unmask		= wsp_chip_unmask_irq,
-	.irq_set_affinity	= wsp_chip_set_affinity
-};
-
-static int wsp_ics_host_match(struct ics *ics, struct device_node *dn)
-{
-	/* All ICSs in the system implement a global irq number space,
-	 * so match against them all. */
-	return of_device_is_compatible(dn, "ibm,ppc-xics");
-}
-
-static int wsp_ics_match_hwirq(struct wsp_ics *wsp_ics, unsigned int hwirq)
-{
-	if (hwirq >= wsp_ics->hwirq_start &&
-	    hwirq <  wsp_ics->hwirq_start + wsp_ics->count)
-		return 1;
-
-	return 0;
-}
-
-static int wsp_ics_map(struct ics *ics, unsigned int virq)
-{
-	struct wsp_ics *wsp_ics = to_wsp_ics(ics);
-	unsigned int hw_irq = virq_to_hw(virq);
-	unsigned long flags;
-
-	if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
-		return -ENOENT;
-
-	irq_set_chip_and_handler(virq, &wsp_irq_chip, handle_fasteoi_irq);
-
-	irq_set_chip_data(virq, wsp_ics);
-
-	spin_lock_irqsave(&wsp_ics->lock, flags);
-	bitmap_allocate_region(wsp_ics->bitmap, hw_irq - wsp_ics->hwirq_start, 0);
-	spin_unlock_irqrestore(&wsp_ics->lock, flags);
-
-	return 0;
-}
-
-static void wsp_ics_mask_unknown(struct ics *ics, unsigned long hw_irq)
-{
-	struct wsp_ics *wsp_ics = to_wsp_ics(ics);
-
-	if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
-		return;
-
-	pr_err("%s: IRQ %lu (real) is invalid, disabling it.\n", __func__, hw_irq);
-	wsp_mask_real_irq(hw_irq, wsp_ics);
-}
-
-static long wsp_ics_get_server(struct ics *ics, unsigned long hw_irq)
-{
-	struct wsp_ics *wsp_ics = to_wsp_ics(ics);
-
-	if (!wsp_ics_match_hwirq(wsp_ics, hw_irq))
-		return -ENOENT;
-
-	return get_irq_server(wsp_ics, hw_irq);
-}
-
-/* HW Number allocation API */
-
-static struct wsp_ics *wsp_ics_find_dn_ics(struct device_node *dn)
-{
-	struct device_node *iparent;
-	int i;
-
-	iparent = of_irq_find_parent(dn);
-	if (!iparent) {
-		pr_err("wsp_ics: Failed to find interrupt parent!\n");
-		return NULL;
-	}
-
-	for(i = 0; i < num_ics; i++) {
-		if(ics_list[i].dn == iparent)
-			break;
-	}
-
-	if (i >= num_ics) {
-		pr_err("wsp_ics: Unable to find parent bitmap!\n");
-		return NULL;
-	}
-
-	return &ics_list[i];
-}
-
-int wsp_ics_alloc_irq(struct device_node *dn, int num)
-{
-	struct wsp_ics *ics;
-	int order, offset;
-
-	ics = wsp_ics_find_dn_ics(dn);
-	if (!ics)
-		return -ENODEV;
-
-	/* Fast, but overly strict if num isn't a power of two */
-	order = get_count_order(num);
-
-	spin_lock_irq(&ics->lock);
-	offset = bitmap_find_free_region(ics->bitmap, ics->count, order);
-	spin_unlock_irq(&ics->lock);
-
-	if (offset < 0)
-		return offset;
-
-	return offset + ics->hwirq_start;
-}
-
-void wsp_ics_free_irq(struct device_node *dn, unsigned int irq)
-{
-	struct wsp_ics *ics;
-
-	ics = wsp_ics_find_dn_ics(dn);
-	if (WARN_ON(!ics))
-		return;
-
-	spin_lock_irq(&ics->lock);
-	bitmap_release_region(ics->bitmap, irq, 0);
-	spin_unlock_irq(&ics->lock);
-}
-
-/* Initialisation */
-
-static int __init wsp_ics_bitmap_setup(struct wsp_ics *ics,
-				      struct device_node *dn)
-{
-	int len, i, j, size;
-	u32 start, count;
-	const u32 *p;
-
-	size = BITS_TO_LONGS(ics->count) * sizeof(long);
-	ics->bitmap = kzalloc(size, GFP_KERNEL);
-	if (!ics->bitmap) {
-		pr_err("wsp_ics: ENOMEM allocating IRQ bitmap!\n");
-		return -ENOMEM;
-	}
-
-	spin_lock_init(&ics->lock);
-
-	p = of_get_property(dn, "available-ranges", &len);
-	if (!p || !len) {
-		/* FIXME this should be a WARN() once mambo is updated */
-		pr_err("wsp_ics: No available-ranges defined for %s\n",
-			dn->full_name);
-		return 0;
-	}
-
-	if (len % (2 * sizeof(u32)) != 0) {
-		/* FIXME this should be a WARN() once mambo is updated */
-		pr_err("wsp_ics: Invalid available-ranges for %s\n",
-			dn->full_name);
-		return 0;
-	}
-
-	bitmap_fill(ics->bitmap, ics->count);
-
-	for (i = 0; i < len / sizeof(u32); i += 2) {
-		start = of_read_number(p + i, 1);
-		count = of_read_number(p + i + 1, 1);
-
-		pr_devel("%s: start: %d count: %d\n", __func__, start, count);
-
-		if ((start + count) > (ics->hwirq_start + ics->count) ||
-		     start < ics->hwirq_start) {
-			pr_err("wsp_ics: Invalid range! -> %d to %d\n",
-					start, start + count);
-			break;
-		}
-
-		for (j = 0; j < count; j++)
-			bitmap_release_region(ics->bitmap,
-				(start + j) - ics->hwirq_start, 0);
-	}
-
-	/* Ensure LSIs are not available for allocation */
-	bitmap_allocate_region(ics->bitmap, ics->lsi_base,
-			       get_count_order(ics->lsi_count));
-
-	return 0;
-}
-
-static int __init wsp_ics_setup(struct wsp_ics *ics, struct device_node *dn)
-{
-	u32 lsi_buid, msi_buid, msi_base, msi_count;
-	void __iomem *regs;
-	const u32 *p;
-	int rc, len, i;
-	u64 caps, buid;
-
-	p = of_get_property(dn, "interrupt-ranges", &len);
-	if (!p || len < (2 * sizeof(u32))) {
-		pr_err("wsp_ics: No/bad interrupt-ranges found on %s\n",
-			dn->full_name);
-		return -ENOENT;
-	}
-
-	if (len > (2 * sizeof(u32))) {
-		pr_err("wsp_ics: Multiple ics ranges not supported.\n");
-		return -EINVAL;
-	}
-
-	regs = of_iomap(dn, 0);
-	if (!regs) {
-		pr_err("wsp_ics: of_iomap(%s) failed\n", dn->full_name);
-		return -ENXIO;
-	}
-
-	ics->hwirq_start = of_read_number(p, 1);
-	ics->count = of_read_number(p + 1, 1);
-	ics->regs = regs;
-
-	ics->chip_id = wsp_get_chip_id(dn);
-	if (WARN_ON(ics->chip_id < 0))
-		ics->chip_id = 0;
-
-	/* Get some informations about the critter */
-	caps = in_be64(ICS_INT_CAPS_REG(ics->regs));
-	buid = in_be64(INT_SRC_LAYER_BUID_REG(ics->regs));
-	ics->lsi_count = caps >> 56;
-	msi_count = (caps >> 44) & 0x7ff;
-
-	/* Note: LSI BUID is 9 bits, but really only 3 are BUID and the
-	 * rest is mixed in the interrupt number. We store the whole
-	 * thing though
-	 */
-	lsi_buid = (buid >> 48) & 0x1ff;
-	ics->lsi_base = (ics->chip_id << WSP_ICS_CHIP_SHIFT) | lsi_buid << 5;
-	msi_buid = (buid >> 37) & 0x7;
-	msi_base = (ics->chip_id << WSP_ICS_CHIP_SHIFT) | msi_buid << 11;
-
-	pr_info("wsp_ics: Found %s\n", dn->full_name);
-	pr_info("wsp_ics:    irq range : 0x%06llx..0x%06llx\n",
-		ics->hwirq_start, ics->hwirq_start + ics->count - 1);
-	pr_info("wsp_ics:    %4d LSIs : 0x%06x..0x%06x\n",
-		ics->lsi_count, ics->lsi_base,
-		ics->lsi_base + ics->lsi_count - 1);
-	pr_info("wsp_ics:    %4d MSIs : 0x%06x..0x%06x\n",
-		msi_count, msi_base,
-		msi_base + msi_count - 1);
-
-	/* Let's check the HW config is sane */
-	if (ics->lsi_base < ics->hwirq_start ||
-	    (ics->lsi_base + ics->lsi_count) > (ics->hwirq_start + ics->count))
-		pr_warning("wsp_ics: WARNING ! LSIs out of interrupt-ranges !\n");
-	if (msi_base < ics->hwirq_start ||
-	    (msi_base + msi_count) > (ics->hwirq_start + ics->count))
-		pr_warning("wsp_ics: WARNING ! MSIs out of interrupt-ranges !\n");
-
-	/* We don't check for overlap between LSI and MSI, which will happen
-	 * if we use the same BUID, I'm not sure yet how legit that is.
-	 */
-
-	rc = wsp_ics_bitmap_setup(ics, dn);
-	if (rc) {
-		iounmap(regs);
-		return rc;
-	}
-
-	ics->dn = of_node_get(dn);
-	alloc_irq_map(ics);
-
-	for(i = 0; i < ics->count; i++)
-		wsp_mask_real_irq(ics->hwirq_start + i, ics);
-
-	ics->ics.map = wsp_ics_map;
-	ics->ics.mask_unknown = wsp_ics_mask_unknown;
-	ics->ics.get_server = wsp_ics_get_server;
-	ics->ics.host_match = wsp_ics_host_match;
-
-	xics_register_ics(&ics->ics);
-
-	return 0;
-}
-
-static void __init wsp_ics_set_default_server(void)
-{
-	struct device_node *np;
-	u32 hwid;
-
-	/* Find the server number for the boot cpu. */
-	np = of_get_cpu_node(boot_cpuid, NULL);
-	BUG_ON(!np);
-
-	hwid = get_hard_smp_processor_id(boot_cpuid);
-
-	pr_info("wsp_ics: default server is %#x, CPU %s\n", hwid, np->full_name);
-	xics_default_server = hwid;
-
-	of_node_put(np);
-}
-
-static int __init wsp_ics_init(void)
-{
-	struct device_node *dn;
-	struct wsp_ics *ics;
-	int rc, found;
-
-	wsp_ics_set_default_server();
-
-	found = 0;
-	for_each_compatible_node(dn, NULL, "ibm,ppc-xics")
-		found++;
-
-	if (found == 0) {
-		pr_err("wsp_ics: No ICS's found!\n");
-		return -ENODEV;
-	}
-
-	ics_list = kmalloc(sizeof(*ics) * found, GFP_KERNEL);
-	if (!ics_list) {
-		pr_err("wsp_ics: No memory for structs.\n");
-		return -ENOMEM;
-	}
-
-	num_ics = 0;
-	ics = ics_list;
-	for_each_compatible_node(dn, NULL, "ibm,wsp-xics") {
-		rc = wsp_ics_setup(ics, dn);
-		if (rc == 0) {
-			ics++;
-			num_ics++;
-		}
-	}
-
-	if (found != num_ics) {
-		pr_err("wsp_ics: Failed setting up %d ICS's\n",
-			found - num_ics);
-		return -1;
-	}
-
-	return 0;
-}
-
-void __init wsp_init_irq(void)
-{
-	wsp_ics_init();
-	xics_init();
-
-	/* We need to patch our irq chip's EOI to point to the right ICP */
-	wsp_irq_chip.irq_eoi = icp_ops->eoi;
-}
-
-#ifdef CONFIG_PCI_MSI
-static void wsp_ics_msi_unmask_irq(struct irq_data *d)
-{
-	wsp_chip_unmask_irq(d);
-	unmask_msi_irq(d);
-}
-
-static unsigned int wsp_ics_msi_startup(struct irq_data *d)
-{
-	wsp_ics_msi_unmask_irq(d);
-	return 0;
-}
-
-static void wsp_ics_msi_mask_irq(struct irq_data *d)
-{
-	mask_msi_irq(d);
-	wsp_chip_mask_irq(d);
-}
-
-/*
- * we do it this way because we reassinge default EOI handling in
- * irq_init() above
- */
-static void wsp_ics_eoi(struct irq_data *data)
-{
-	wsp_irq_chip.irq_eoi(data);
-}
-
-static struct irq_chip wsp_ics_msi = {
-	.name = "WSP ICS MSI",
-	.irq_startup = wsp_ics_msi_startup,
-	.irq_mask = wsp_ics_msi_mask_irq,
-	.irq_unmask = wsp_ics_msi_unmask_irq,
-	.irq_eoi = wsp_ics_eoi,
-	.irq_set_affinity = wsp_chip_set_affinity
-};
-
-void wsp_ics_set_msi_chip(unsigned int irq)
-{
-	irq_set_chip(irq, &wsp_ics_msi);
-}
-
-void wsp_ics_set_std_chip(unsigned int irq)
-{
-	irq_set_chip(irq, &wsp_irq_chip);
-}
-#endif /* CONFIG_PCI_MSI */