14 files changed, 388 insertions, 453 deletions

diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index cf736ca0cf05..84e13253aec5 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_FSL_PCI)		+= fsl_pci.o $(fsl-msi-obj-y)
 obj-$(CONFIG_FSL_PMC)		+= fsl_pmc.o
 obj-$(CONFIG_FSL_LBC)		+= fsl_lbc.o
 obj-$(CONFIG_FSL_GTM)		+= fsl_gtm.o
-obj-$(CONFIG_MPC8xxx_GPIO)	+= mpc8xxx_gpio.o
 obj-$(CONFIG_FSL_85XX_CACHE_SRAM)	+= fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o
 obj-$(CONFIG_SIMPLE_GPIO)	+= simple_gpio.o
 obj-$(CONFIG_FSL_RIO)		+= fsl_rio.o
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
index 265f0f09395a..ba4271919062 100644
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -104,7 +104,7 @@ axon_ram_irq_handler(int irq, void *dev)
  * axon_ram_make_request - make_request() method for block device
  * @queue, @bio: see blk_queue_make_request()
  */
-static int
+static void
 axon_ram_make_request(struct request_queue *queue, struct bio *bio)
 {
 	struct axon_ram_bank *bank = bio->bi_bdev->bd_disk->private_data;
@@ -113,7 +113,6 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio)
 	struct bio_vec *vec;
 	unsigned int transfered;
 	unsigned short idx;
-	int rc = 0;
 
 	phys_mem = bank->io_addr + (bio->bi_sector << AXON_RAM_SECTOR_SHIFT);
 	phys_end = bank->io_addr + bank->size;
@@ -121,8 +120,7 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio)
 	bio_for_each_segment(vec, bio, idx) {
 		if (unlikely(phys_mem + vec->bv_len > phys_end)) {
 			bio_io_error(bio);
-			rc = -ERANGE;
-			break;
+			return;
 		}
 
 		user_mem = page_address(vec->bv_page) + vec->bv_offset;
@@ -135,8 +133,6 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio)
 		transfered += vec->bv_len;
 	}
 	bio_endio(bio, 0);
-
-	return rc;
 }
 
 /**
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index f8488a64771d..bf6c7cc0a6af 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -3,7 +3,7 @@
  *
  * Author: Scott Wood <scottwood@freescale.com>
  *
- * Copyright 2007 Freescale Semiconductor, Inc.
+ * Copyright 2007-2008,2010 Freescale Semiconductor, Inc.
  *
  * Some parts derived from commproc.c/cpm2_common.c, which is:
  * Copyright (c) 1997 Dan error_act (dmalek@jlc.net)
@@ -147,6 +147,7 @@ unsigned long cpm_muram_alloc(unsigned long size, unsigned long align)
 	spin_lock_irqsave(&cpm_muram_lock, flags);
 	cpm_muram_info.alignment = align;
 	start = rh_alloc(&cpm_muram_info, size, "commproc");
+	memset(cpm_muram_addr(start), 0, size);
 	spin_unlock_irqrestore(&cpm_muram_lock, flags);
 
 	return start;
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
index 419a77239bd7..e5c344d336ea 100644
--- a/arch/powerpc/sysdev/fsl_msi.c
+++ b/arch/powerpc/sysdev/fsl_msi.c
@@ -30,7 +30,7 @@ LIST_HEAD(msi_head);
 
 struct fsl_msi_feature {
 	u32 fsl_pic_ip;
-	u32 msiir_offset;
+	u32 msiir_offset; /* Offset of MSIIR, relative to start of MSIR bank */
 };
 
 struct fsl_msi_cascade_data {
@@ -126,10 +126,19 @@ static void fsl_compose_msi_msg(struct pci_dev *pdev, int hwirq,
 {
 	struct fsl_msi *msi_data = fsl_msi_data;
 	struct pci_controller *hose = pci_bus_to_host(pdev->bus);
-	u64 base = fsl_pci_immrbar_base(hose);
+	u64 address; /* Physical address of the MSIIR */
+	int len;
+	const u64 *reg;
+
+	/* If the msi-address-64 property exists, then use it */
+	reg = of_get_property(hose->dn, "msi-address-64", &len);
+	if (reg && (len == sizeof(u64)))
+		address = be64_to_cpup(reg);
+	else
+		address = fsl_pci_immrbar_base(hose) + msi_data->msiir_offset;
 
-	msg->address_lo = msi_data->msi_addr_lo + lower_32_bits(base);
-	msg->address_hi = msi_data->msi_addr_hi + upper_32_bits(base);
+	msg->address_lo = lower_32_bits(address);
+	msg->address_hi = upper_32_bits(address);
 
 	msg->data = hwirq;
 
@@ -296,7 +305,7 @@ static int __devinit fsl_msi_setup_hwirq(struct fsl_msi *msi,
 	}
 
 	msi->msi_virqs[irq_index] = virt_msir;
-	cascade_data->index = offset + irq_index;
+	cascade_data->index = offset;
 	cascade_data->msi_data = msi;
 	irq_set_handler_data(virt_msir, cascade_data);
 	irq_set_chained_handler(virt_msir, fsl_msi_cascade);
@@ -359,8 +368,7 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev)
 
 	msi->irqhost->host_data = msi;
 
-	msi->msi_addr_hi = 0x0;
-	msi->msi_addr_lo = features->msiir_offset + (res.start & 0xfffff);
+	msi->msiir_offset = features->msiir_offset + (res.start & 0xfffff);
 
 	rc = fsl_msi_init_allocator(msi);
 	if (rc) {
@@ -376,8 +384,10 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev)
 		goto error_out;
 	}
 
-	if (!p)
+	if (!p) {
 		p = all_avail;
+		len = sizeof(all_avail);
+	}
 
 	for (irq_index = 0, i = 0; i < len / (2 * sizeof(u32)); i++) {
 		if (p[i * 2] % IRQS_PER_MSI_REG ||
@@ -393,7 +403,7 @@ static int __devinit fsl_of_msi_probe(struct platform_device *dev)
 		count = p[i * 2 + 1] / IRQS_PER_MSI_REG;
 
 		for (j = 0; j < count; j++, irq_index++) {
-			err = fsl_msi_setup_hwirq(msi, dev, offset, irq_index);
+			err = fsl_msi_setup_hwirq(msi, dev, offset + j, irq_index);
 			if (err)
 				goto error_out;
 		}
diff --git a/arch/powerpc/sysdev/fsl_msi.h b/arch/powerpc/sysdev/fsl_msi.h
index 624580c252d7..1313abbc5200 100644
--- a/arch/powerpc/sysdev/fsl_msi.h
+++ b/arch/powerpc/sysdev/fsl_msi.h
@@ -28,8 +28,7 @@ struct fsl_msi {
 
 	unsigned long cascade_irq;
 
-	u32 msi_addr_lo;
-	u32 msi_addr_hi;
+	u32 msiir_offset; /* Offset of MSIIR, relative to start of CCSR */
 	void __iomem *msi_regs;
 	u32 feature;
 	int msi_virqs[NR_MSI_REG];
diff --git a/arch/powerpc/sysdev/fsl_rio.c b/arch/powerpc/sysdev/fsl_rio.c
index 8d9b9c42260c..de170fd5ba4e 100644
--- a/arch/powerpc/sysdev/fsl_rio.c
+++ b/arch/powerpc/sysdev/fsl_rio.c
@@ -1608,6 +1608,7 @@ int fsl_rio_setup(struct platform_device *dev)
 	return 0;
 err:
 	iounmap(priv->regs_win);
+	release_resource(&port->iores);
 err_res:
 	kfree(priv);
 err_priv:
diff --git a/arch/powerpc/sysdev/mpc8xxx_gpio.c b/arch/powerpc/sysdev/mpc8xxx_gpio.c
deleted file mode 100644
index fb4963abdf55..000000000000
--- a/arch/powerpc/sysdev/mpc8xxx_gpio.c
+++ /dev/null
@@ -1,395 +0,0 @@
-/*
- * GPIOs on MPC512x/8349/8572/8610 and compatible
- *
- * Copyright (C) 2008 Peter Korsgaard <jacmet@sunsite.dk>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2.  This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
-#include <linux/gpio.h>
-#include <linux/slab.h>
-#include <linux/irq.h>
-
-#define MPC8XXX_GPIO_PINS	32
-
-#define GPIO_DIR		0x00
-#define GPIO_ODR		0x04
-#define GPIO_DAT		0x08
-#define GPIO_IER		0x0c
-#define GPIO_IMR		0x10
-#define GPIO_ICR		0x14
-#define GPIO_ICR2		0x18
-
-struct mpc8xxx_gpio_chip {
-	struct of_mm_gpio_chip mm_gc;
-	spinlock_t lock;
-
-	/*
-	 * shadowed data register to be able to clear/set output pins in
-	 * open drain mode safely
-	 */
-	u32 data;
-	struct irq_host *irq;
-	void *of_dev_id_data;
-};
-
-static inline u32 mpc8xxx_gpio2mask(unsigned int gpio)
-{
-	return 1u << (MPC8XXX_GPIO_PINS - 1 - gpio);
-}
-
-static inline struct mpc8xxx_gpio_chip *
-to_mpc8xxx_gpio_chip(struct of_mm_gpio_chip *mm)
-{
-	return container_of(mm, struct mpc8xxx_gpio_chip, mm_gc);
-}
-
-static void mpc8xxx_gpio_save_regs(struct of_mm_gpio_chip *mm)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-
-	mpc8xxx_gc->data = in_be32(mm->regs + GPIO_DAT);
-}
-
-/* Workaround GPIO 1 errata on MPC8572/MPC8536. The status of GPIOs
- * defined as output cannot be determined by reading GPDAT register,
- * so we use shadow data register instead. The status of input pins
- * is determined by reading GPDAT register.
- */
-static int mpc8572_gpio_get(struct gpio_chip *gc, unsigned int gpio)
-{
-	u32 val;
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-
-	val = in_be32(mm->regs + GPIO_DAT) & ~in_be32(mm->regs + GPIO_DIR);
-
-	return (val | mpc8xxx_gc->data) & mpc8xxx_gpio2mask(gpio);
-}
-
-static int mpc8xxx_gpio_get(struct gpio_chip *gc, unsigned int gpio)
-{
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-
-	return in_be32(mm->regs + GPIO_DAT) & mpc8xxx_gpio2mask(gpio);
-}
-
-static void mpc8xxx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
-{
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-	unsigned long flags;
-
-	spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-
-	if (val)
-		mpc8xxx_gc->data |= mpc8xxx_gpio2mask(gpio);
-	else
-		mpc8xxx_gc->data &= ~mpc8xxx_gpio2mask(gpio);
-
-	out_be32(mm->regs + GPIO_DAT, mpc8xxx_gc->data);
-
-	spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-}
-
-static int mpc8xxx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
-{
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-	unsigned long flags;
-
-	spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-
-	clrbits32(mm->regs + GPIO_DIR, mpc8xxx_gpio2mask(gpio));
-
-	spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-
-	return 0;
-}
-
-static int mpc8xxx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
-{
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-	unsigned long flags;
-
-	mpc8xxx_gpio_set(gc, gpio, val);
-
-	spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-
-	setbits32(mm->regs + GPIO_DIR, mpc8xxx_gpio2mask(gpio));
-
-	spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-
-	return 0;
-}
-
-static int mpc8xxx_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
-{
-	struct of_mm_gpio_chip *mm = to_of_mm_gpio_chip(gc);
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = to_mpc8xxx_gpio_chip(mm);
-
-	if (mpc8xxx_gc->irq && offset < MPC8XXX_GPIO_PINS)
-		return irq_create_mapping(mpc8xxx_gc->irq, offset);
-	else
-		return -ENXIO;
-}
-
-static void mpc8xxx_gpio_irq_cascade(unsigned int irq, struct irq_desc *desc)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-	unsigned int mask;
-
-	mask = in_be32(mm->regs + GPIO_IER) & in_be32(mm->regs + GPIO_IMR);
-	if (mask)
-		generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq,
-						     32 - ffs(mask)));
-}
-
-static void mpc8xxx_irq_unmask(struct irq_data *d)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-	unsigned long flags;
-
-	spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-
-	setbits32(mm->regs + GPIO_IMR, mpc8xxx_gpio2mask(irqd_to_hwirq(d)));
-
-	spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-}
-
-static void mpc8xxx_irq_mask(struct irq_data *d)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-	unsigned long flags;
-
-	spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-
-	clrbits32(mm->regs + GPIO_IMR, mpc8xxx_gpio2mask(irqd_to_hwirq(d)));
-
-	spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-}
-
-static void mpc8xxx_irq_ack(struct irq_data *d)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-
-	out_be32(mm->regs + GPIO_IER, mpc8xxx_gpio2mask(irqd_to_hwirq(d)));
-}
-
-static int mpc8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-	unsigned long flags;
-
-	switch (flow_type) {
-	case IRQ_TYPE_EDGE_FALLING:
-		spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-		setbits32(mm->regs + GPIO_ICR,
-			  mpc8xxx_gpio2mask(irqd_to_hwirq(d)));
-		spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-		break;
-
-	case IRQ_TYPE_EDGE_BOTH:
-		spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-		clrbits32(mm->regs + GPIO_ICR,
-			  mpc8xxx_gpio2mask(irqd_to_hwirq(d)));
-		spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int mpc512x_irq_set_type(struct irq_data *d, unsigned int flow_type)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_data_get_irq_chip_data(d);
-	struct of_mm_gpio_chip *mm = &mpc8xxx_gc->mm_gc;
-	unsigned long gpio = irqd_to_hwirq(d);
-	void __iomem *reg;
-	unsigned int shift;
-	unsigned long flags;
-
-	if (gpio < 16) {
-		reg = mm->regs + GPIO_ICR;
-		shift = (15 - gpio) * 2;
-	} else {
-		reg = mm->regs + GPIO_ICR2;
-		shift = (15 - (gpio % 16)) * 2;
-	}
-
-	switch (flow_type) {
-	case IRQ_TYPE_EDGE_FALLING:
-	case IRQ_TYPE_LEVEL_LOW:
-		spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-		clrsetbits_be32(reg, 3 << shift, 2 << shift);
-		spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-		break;
-
-	case IRQ_TYPE_EDGE_RISING:
-	case IRQ_TYPE_LEVEL_HIGH:
-		spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-		clrsetbits_be32(reg, 3 << shift, 1 << shift);
-		spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-		break;
-
-	case IRQ_TYPE_EDGE_BOTH:
-		spin_lock_irqsave(&mpc8xxx_gc->lock, flags);
-		clrbits32(reg, 3 << shift);
-		spin_unlock_irqrestore(&mpc8xxx_gc->lock, flags);
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static struct irq_chip mpc8xxx_irq_chip = {
-	.name		= "mpc8xxx-gpio",
-	.irq_unmask	= mpc8xxx_irq_unmask,
-	.irq_mask	= mpc8xxx_irq_mask,
-	.irq_ack	= mpc8xxx_irq_ack,
-	.irq_set_type	= mpc8xxx_irq_set_type,
-};
-
-static int mpc8xxx_gpio_irq_map(struct irq_host *h, unsigned int virq,
-				irq_hw_number_t hw)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc = h->host_data;
-
-	if (mpc8xxx_gc->of_dev_id_data)
-		mpc8xxx_irq_chip.irq_set_type = mpc8xxx_gc->of_dev_id_data;
-
-	irq_set_chip_data(virq, h->host_data);
-	irq_set_chip_and_handler(virq, &mpc8xxx_irq_chip, handle_level_irq);
-	irq_set_irq_type(virq, IRQ_TYPE_NONE);
-
-	return 0;
-}
-
-static int mpc8xxx_gpio_irq_xlate(struct irq_host *h, struct device_node *ct,
-				  const u32 *intspec, unsigned int intsize,
-				  irq_hw_number_t *out_hwirq,
-				  unsigned int *out_flags)
-
-{
-	/* interrupt sense values coming from the device tree equal either
-	 * EDGE_FALLING or EDGE_BOTH
-	 */
-	*out_hwirq = intspec[0];
-	*out_flags = intspec[1];
-
-	return 0;
-}
-
-static struct irq_host_ops mpc8xxx_gpio_irq_ops = {
-	.map	= mpc8xxx_gpio_irq_map,
-	.xlate	= mpc8xxx_gpio_irq_xlate,
-};
-
-static struct of_device_id mpc8xxx_gpio_ids[] __initdata = {
-	{ .compatible = "fsl,mpc8349-gpio", },
-	{ .compatible = "fsl,mpc8572-gpio", },
-	{ .compatible = "fsl,mpc8610-gpio", },
-	{ .compatible = "fsl,mpc5121-gpio", .data = mpc512x_irq_set_type, },
-	{ .compatible = "fsl,qoriq-gpio",   },
-	{}
-};
-
-static void __init mpc8xxx_add_controller(struct device_node *np)
-{
-	struct mpc8xxx_gpio_chip *mpc8xxx_gc;
-	struct of_mm_gpio_chip *mm_gc;
-	struct gpio_chip *gc;
-	const struct of_device_id *id;
-	unsigned hwirq;
-	int ret;
-
-	mpc8xxx_gc = kzalloc(sizeof(*mpc8xxx_gc), GFP_KERNEL);
-	if (!mpc8xxx_gc) {
-		ret = -ENOMEM;
-		goto err;
-	}
-
-	spin_lock_init(&mpc8xxx_gc->lock);
-
-	mm_gc = &mpc8xxx_gc->mm_gc;
-	gc = &mm_gc->gc;
-
-	mm_gc->save_regs = mpc8xxx_gpio_save_regs;
-	gc->ngpio = MPC8XXX_GPIO_PINS;
-	gc->direction_input = mpc8xxx_gpio_dir_in;
-	gc->direction_output = mpc8xxx_gpio_dir_out;
-	if (of_device_is_compatible(np, "fsl,mpc8572-gpio"))
-		gc->get = mpc8572_gpio_get;
-	else
-		gc->get = mpc8xxx_gpio_get;
-	gc->set = mpc8xxx_gpio_set;
-	gc->to_irq = mpc8xxx_gpio_to_irq;
-
-	ret = of_mm_gpiochip_add(np, mm_gc);
-	if (ret)
-		goto err;
-
-	hwirq = irq_of_parse_and_map(np, 0);
-	if (hwirq == NO_IRQ)
-		goto skip_irq;
-
-	mpc8xxx_gc->irq =
-		irq_alloc_host(np, IRQ_HOST_MAP_LINEAR, MPC8XXX_GPIO_PINS,
-			       &mpc8xxx_gpio_irq_ops, MPC8XXX_GPIO_PINS);
-	if (!mpc8xxx_gc->irq)
-		goto skip_irq;
-
-	id = of_match_node(mpc8xxx_gpio_ids, np);
-	if (id)
-		mpc8xxx_gc->of_dev_id_data = id->data;
-
-	mpc8xxx_gc->irq->host_data = mpc8xxx_gc;
-
-	/* ack and mask all irqs */
-	out_be32(mm_gc->regs + GPIO_IER, 0xffffffff);
-	out_be32(mm_gc->regs + GPIO_IMR, 0);
-
-	irq_set_handler_data(hwirq, mpc8xxx_gc);
-	irq_set_chained_handler(hwirq, mpc8xxx_gpio_irq_cascade);
-
-skip_irq:
-	return;
-
-err:
-	pr_err("%s: registration failed with status %d\n",
-	       np->full_name, ret);
-	kfree(mpc8xxx_gc);
-
-	return;
-}
-
-static int __init mpc8xxx_add_gpiochips(void)
-{
-	struct device_node *np;
-
-	for_each_matching_node(np, mpc8xxx_gpio_ids)
-		mpc8xxx_add_controller(np);
-
-	return 0;
-}
-arch_initcall(mpc8xxx_add_gpiochips);
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index d5d3ff3d757e..0842c6f8a3e6 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1285,13 +1285,11 @@ struct mpic * __init mpic_alloc(struct device_node *node,
 			   mpic_read(mpic->gregs, MPIC_INFO(GREG_GLOBAL_CONF_0))
 			   | MPIC_GREG_GCONF_MCK);
 
-	/* Read feature register, calculate num CPUs and, for non-ISU
-	 * MPICs, num sources as well. On ISU MPICs, sources are counted
-	 * as ISUs are added
+	/*
+	 * Read feature register.  For non-ISU MPICs, num sources as well. On
+	 * ISU MPICs, sources are counted as ISUs are added
 	 */
 	greg_feature = mpic_read(mpic->gregs, MPIC_INFO(GREG_FEATURE_0));
-	mpic->num_cpus = ((greg_feature & MPIC_GREG_FEATURE_LAST_CPU_MASK)
-			  >> MPIC_GREG_FEATURE_LAST_CPU_SHIFT) + 1;
 	if (isu_size == 0) {
 		if (flags & MPIC_BROKEN_FRR_NIRQS)
 			mpic->num_sources = mpic->irq_count;
@@ -1301,10 +1299,18 @@ struct mpic * __init mpic_alloc(struct device_node *node,
 				 >> MPIC_GREG_FEATURE_LAST_SRC_SHIFT) + 1;
 	}
 
+	/*
+	 * The MPIC driver will crash if there are more cores than we
+	 * can initialize, so we may as well catch that problem here.
+	 */
+	BUG_ON(num_possible_cpus() > MPIC_MAX_CPUS);
+
 	/* Map the per-CPU registers */
-	for (i = 0; i < mpic->num_cpus; i++) {
-		mpic_map(mpic, node, paddr, &mpic->cpuregs[i],
-			 MPIC_INFO(CPU_BASE) + i * MPIC_INFO(CPU_STRIDE),
+	for_each_possible_cpu(i) {
+		unsigned int cpu = get_hard_smp_processor_id(i);
+
+		mpic_map(mpic, node, paddr, &mpic->cpuregs[cpu],
+			 MPIC_INFO(CPU_BASE) + cpu * MPIC_INFO(CPU_STRIDE),
 			 0x1000);
 	}
 
@@ -1343,7 +1349,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
 	}
 	printk(KERN_INFO "mpic: Setting up MPIC \"%s\" version %s at %llx,"
 	       " max %d CPUs\n",
-	       name, vers, (unsigned long long)paddr, mpic->num_cpus);
+	       name, vers, (unsigned long long)paddr, num_possible_cpus());
 	printk(KERN_INFO "mpic: ISU size: %d, shift: %d, mask: %x\n",
 	       mpic->isu_size, mpic->isu_shift, mpic->isu_mask);
 
@@ -1742,6 +1748,7 @@ void mpic_reset_core(int cpu)
 	struct mpic *mpic = mpic_primary;
 	u32 pir;
 	int cpuid = get_hard_smp_processor_id(cpu);
+	int i;
 
 	/* Set target bit for core reset */
 	pir = mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT));
@@ -1753,6 +1760,15 @@ void mpic_reset_core(int cpu)
 	pir &= ~(1 << cpuid);
 	mpic_write(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT), pir);
 	mpic_read(mpic->gregs, MPIC_INFO(GREG_PROCESSOR_INIT));
+
+	/* Perform 15 EOI on each reset core to clear pending interrupts.
+	 * This is required for FSL CoreNet based devices */
+	if (mpic->flags & MPIC_FSL) {
+		for (i = 0; i < 15; i++) {
+			_mpic_write(mpic->reg_type, &mpic->cpuregs[cpuid],
+				      MPIC_CPU_EOI, 0);
+		}
+	}
 }
 #endif /* CONFIG_SMP */
 
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index dbfe96bc878a..862f11b3821e 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -834,7 +834,7 @@ static int __init ppc440spe_pciex_core_init(struct device_node *np)
 	return 3;
 }
 
-static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 	u32 val = 1 << 24;
 
@@ -872,12 +872,12 @@ static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 	return ppc4xx_pciex_port_reset_sdr(port);
 }
 
-static int ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 	return ppc440spe_pciex_init_port_hw(port);
 }
 
-static int ppc440speB_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc440speB_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 	int rc = ppc440spe_pciex_init_port_hw(port);
 
@@ -936,7 +936,7 @@ static int __init ppc460ex_pciex_core_init(struct device_node *np)
 	return 2;
 }
 
-static int ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 	u32 val;
 	u32 utlset1;
@@ -1092,6 +1092,10 @@ static int __init ppc460sx_pciex_core_init(struct device_node *np)
 	mtdcri(SDR0, PESDR1_460SX_HSSSLEW, 0xFFFF0000);
 	mtdcri(SDR0, PESDR2_460SX_HSSSLEW, 0xFFFF0000);
 
+	/* Set HSS PRBS enabled */
+	mtdcri(SDR0, PESDR0_460SX_HSSCTLSET, 0x00001130);
+	mtdcri(SDR0, PESDR2_460SX_HSSCTLSET, 0x00001130);
+
 	udelay(100);
 
 	/* De-assert PLLRESET */
@@ -1122,7 +1126,7 @@ static int __init ppc460sx_pciex_core_init(struct device_node *np)
 	return 2;
 }
 
-static int ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 
 	if (port->endpoint)
@@ -1132,9 +1136,6 @@ static int ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 		dcri_clrset(SDR0, port->sdr_base + PESDRn_UTLSET2,
 				0, 0x01000000);
 
-	/*Gen-1*/
-	mtdcri(SDR0, port->sdr_base + PESDRn_460SX_RCEI, 0x08000000);
-
 	dcri_clrset(SDR0, port->sdr_base + PESDRn_RCSSET,
 			(PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL),
 			PESDRx_RCSSET_RSTPYN);
@@ -1148,14 +1149,42 @@ static int ppc460sx_pciex_init_utl(struct ppc4xx_pciex_port *port)
 {
 	/* Max 128 Bytes */
 	out_be32 (port->utl_base + PEUTL_PBBSZ,   0x00000000);
+	/* Assert VRB and TXE - per datasheet turn off addr validation */
+	out_be32(port->utl_base + PEUTL_PCTL,  0x80800000);
 	return 0;
 }
 
+static void __init ppc460sx_pciex_check_link(struct ppc4xx_pciex_port *port)
+{
+	void __iomem *mbase;
+	int attempt = 50;
+
+	port->link = 0;
+
+	mbase = ioremap(port->cfg_space.start + 0x10000000, 0x1000);
+	if (mbase == NULL) {
+		printk(KERN_ERR "%s: Can't map internal config space !",
+			port->node->full_name);
+		goto done;
+	}
+
+	while (attempt && (0 == (in_le32(mbase + PECFG_460SX_DLLSTA)
+			& PECFG_460SX_DLLSTA_LINKUP))) {
+		attempt--;
+		mdelay(10);
+	}
+	if (attempt)
+		port->link = 1;
+done:
+	iounmap(mbase);
+
+}
+
 static struct ppc4xx_pciex_hwops ppc460sx_pcie_hwops __initdata = {
 	.core_init	= ppc460sx_pciex_core_init,
 	.port_init_hw	= ppc460sx_pciex_init_port_hw,
 	.setup_utl	= ppc460sx_pciex_init_utl,
-	.check_link	= ppc4xx_pciex_check_link_sdr,
+	.check_link	= ppc460sx_pciex_check_link,
 };
 
 #endif /* CONFIG_44x */
@@ -1189,7 +1218,7 @@ static void ppc405ex_pcie_phy_reset(struct ppc4xx_pciex_port *port)
 	mtdcri(SDR0, port->sdr_base + PESDRn_RCSSET, 0x00101000);
 }
 
-static int ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
+static int __init ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 {
 	u32 val;
 
@@ -1338,15 +1367,15 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
 	if (rc != 0)
 		return rc;
 
-	if (ppc4xx_pciex_hwops->check_link)
-		ppc4xx_pciex_hwops->check_link(port);
-
 	/*
 	 * Initialize mapping: disable all regions and configure
 	 * CFG and REG regions based on resources in the device tree
 	 */
 	ppc4xx_pciex_port_init_mapping(port);
 
+	if (ppc4xx_pciex_hwops->check_link)
+		ppc4xx_pciex_hwops->check_link(port);
+
 	/*
 	 * Map UTL
 	 */
@@ -1360,13 +1389,23 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
 		ppc4xx_pciex_hwops->setup_utl(port);
 
 	/*
-	 * Check for VC0 active and assert RDY.
+	 * Check for VC0 active or PLL Locked and assert RDY.
 	 */
 	if (port->sdr_base) {
-		if (port->link &&
-		    ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS,
-					     1 << 16, 1 << 16, 5000)) {
-			printk(KERN_INFO "PCIE%d: VC0 not active\n", port->index);
+		if (of_device_is_compatible(port->node,
+				"ibm,plb-pciex-460sx")){
+			if (port->link && ppc4xx_pciex_wait_on_sdr(port,
+					PESDRn_RCSSTS,
+					1 << 12, 1 << 12, 5000)) {
+				printk(KERN_INFO "PCIE%d: PLL not locked\n",
+						port->index);
+				port->link = 0;
+			}
+		} else if (port->link &&
+			ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS,
+				1 << 16, 1 << 16, 5000)) {
+			printk(KERN_INFO "PCIE%d: VC0 not active\n",
+					port->index);
 			port->link = 0;
 		}
 
@@ -1573,8 +1612,15 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port	*port,
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAH, lah);
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR1BAL, lal);
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKH, 0x7fffffff);
-		/* Note that 3 here means enabled | single region */
-		dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL, sa | 3);
+		/*Enabled and single region */
+		if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx"))
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL,
+				sa | DCRO_PEGPL_460SX_OMR1MSKL_UOT
+					| DCRO_PEGPL_OMRxMSKL_VAL);
+		else
+			dcr_write(port->dcrs, DCRO_PEGPL_OMR1MSKL,
+				sa | DCRO_PEGPL_OMR1MSKL_UOT
+					| DCRO_PEGPL_OMRxMSKL_VAL);
 		break;
 	case 1:
 		out_le32(mbase + PECFG_POM1LAH, pciah);
@@ -1582,8 +1628,8 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port	*port,
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAH, lah);
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR2BAL, lal);
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKH, 0x7fffffff);
-		/* Note that 3 here means enabled | single region */
-		dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL, sa | 3);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR2MSKL,
+				sa | DCRO_PEGPL_OMRxMSKL_VAL);
 		break;
 	case 2:
 		out_le32(mbase + PECFG_POM2LAH, pciah);
@@ -1592,7 +1638,9 @@ static int __init ppc4xx_setup_one_pciex_POM(struct ppc4xx_pciex_port	*port,
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR3BAL, lal);
 		dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKH, 0x7fffffff);
 		/* Note that 3 here means enabled | IO space !!! */
-		dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL, sa | 3);
+		dcr_write(port->dcrs, DCRO_PEGPL_OMR3MSKL,
+				sa | DCRO_PEGPL_OMR3MSKL_IO
+					| DCRO_PEGPL_OMRxMSKL_VAL);
 		break;
 	}
 
@@ -1693,6 +1741,9 @@ static void __init ppc4xx_configure_pciex_PIMs(struct ppc4xx_pciex_port *port,
 		if (res->flags & IORESOURCE_PREFETCH)
 			sa |= 0x8;
 
+		if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx"))
+			sa |= PCI_BASE_ADDRESS_MEM_TYPE_64;
+
 		out_le32(mbase + PECFG_BAR0HMPA, RES_TO_U32_HIGH(sa));
 		out_le32(mbase + PECFG_BAR0LMPA, RES_TO_U32_LOW(sa));
 
@@ -1854,6 +1905,10 @@ static void __init ppc4xx_pciex_port_setup_hose(struct ppc4xx_pciex_port *port)
 	}
 	out_le16(mbase + 0x202, val);
 
+	/* Enable Bus master, memory, and io space */
+	if (of_device_is_compatible(port->node, "ibm,plb-pciex-460sx"))
+		out_le16(mbase + 0x204, 0x7);
+
 	if (!port->endpoint) {
 		/* Set Class Code to PCI-PCI bridge and Revision Id to 1 */
 		out_le32(mbase + 0x208, 0x06040001);
diff --git a/arch/powerpc/sysdev/ppc4xx_pci.h b/arch/powerpc/sysdev/ppc4xx_pci.h
index c39a134e8684..32ce763a375a 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.h
+++ b/arch/powerpc/sysdev/ppc4xx_pci.h
@@ -464,6 +464,18 @@
 #define PECFG_POM2LAL		0x390
 #define PECFG_POM2LAH		0x394
 
+/* 460sx only */
+#define PECFG_460SX_DLLSTA     0x3f8
+
+/* 460sx Bit Mappings */
+#define PECFG_460SX_DLLSTA_LINKUP	 0x00000010
+#define DCRO_PEGPL_460SX_OMR1MSKL_UOT	 0x00000004
+
+/* PEGPL Bit Mappings */
+#define DCRO_PEGPL_OMRxMSKL_VAL	 0x00000001
+#define DCRO_PEGPL_OMR1MSKL_UOT	 0x00000002
+#define DCRO_PEGPL_OMR3MSKL_IO	 0x00000002
+
 /* SDR Bit Mappings */
 #define PESDRx_RCSSET_HLDPLB	0x10000000
 #define PESDRx_RCSSET_RSTGU	0x01000000
diff --git a/arch/powerpc/sysdev/xics/Makefile b/arch/powerpc/sysdev/xics/Makefile
index b75a6059337f..c606aa8ba60a 100644
--- a/arch/powerpc/sysdev/xics/Makefile
+++ b/arch/powerpc/sysdev/xics/Makefile
@@ -4,3 +4,4 @@ obj-y				+= xics-common.o
 obj-$(CONFIG_PPC_ICP_NATIVE)	+= icp-native.o
 obj-$(CONFIG_PPC_ICP_HV)	+= icp-hv.o
 obj-$(CONFIG_PPC_ICS_RTAS)	+= ics-rtas.o
+obj-$(CONFIG_PPC_POWERNV)	+= ics-opal.o
diff --git a/arch/powerpc/sysdev/xics/icp-native.c b/arch/powerpc/sysdev/xics/icp-native.c
index 50e32afe392e..4c79b6fbee1c 100644
--- a/arch/powerpc/sysdev/xics/icp-native.c
+++ b/arch/powerpc/sysdev/xics/icp-native.c
@@ -276,7 +276,7 @@ static const struct icp_ops icp_native_ops = {
 #endif
 };
 
-int icp_native_init(void)
+int __init icp_native_init(void)
 {
 	struct device_node *np;
 	u32 indx = 0;
diff --git a/arch/powerpc/sysdev/xics/ics-opal.c b/arch/powerpc/sysdev/xics/ics-opal.c
new file mode 100644
index 000000000000..f7e8609df0d5
--- /dev/null
+++ b/arch/powerpc/sysdev/xics/ics-opal.c
@@ -0,0 +1,244 @@
+/*
+ * ICS backend for OPAL managed interrupts.
+ *
+ * Copyright 2011 IBM Corp.
+ *
+ * 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.
+ */
+
+#undef DEBUG
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/irq.h>
+#include <linux/smp.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/cpu.h>
+#include <linux/of.h>
+#include <linux/spinlock.h>
+#include <linux/msi.h>
+
+#include <asm/prom.h>
+#include <asm/smp.h>
+#include <asm/machdep.h>
+#include <asm/irq.h>
+#include <asm/errno.h>
+#include <asm/xics.h>
+#include <asm/opal.h>
+#include <asm/firmware.h>
+
+static int ics_opal_mangle_server(int server)
+{
+	/* No link for now */
+	return server << 2;
+}
+
+static int ics_opal_unmangle_server(int server)
+{
+	/* No link for now */
+	return server >> 2;
+}
+
+static void ics_opal_unmask_irq(struct irq_data *d)
+{
+	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
+	int64_t rc;
+	int server;
+
+	pr_devel("ics-hal: unmask virq %d [hw 0x%x]\n", d->irq, hw_irq);
+
+	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
+		return;
+
+	server = xics_get_irq_server(d->irq, d->affinity, 0);
+	server = ics_opal_mangle_server(server);
+
+	rc = opal_set_xive(hw_irq, server, DEFAULT_PRIORITY);
+	if (rc != OPAL_SUCCESS)
+		pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)"
+		       " error %lld\n",
+		       __func__, d->irq, hw_irq, server, rc);
+}
+
+static unsigned int ics_opal_startup(struct irq_data *d)
+{
+#ifdef CONFIG_PCI_MSI
+	/*
+	 * The generic MSI code returns with the interrupt disabled on the
+	 * card, using the MSI mask bits. Firmware doesn't appear to unmask
+	 * at that level, so we do it here by hand.
+	 */
+	if (d->msi_desc)
+		unmask_msi_irq(d);
+#endif
+
+	/* unmask it */
+	ics_opal_unmask_irq(d);
+	return 0;
+}
+
+static void ics_opal_mask_real_irq(unsigned int hw_irq)
+{
+	int server = ics_opal_mangle_server(xics_default_server);
+	int64_t rc;
+
+	if (hw_irq == XICS_IPI)
+		return;
+
+	/* Have to set XIVE to 0xff to be able to remove a slot */
+	rc = opal_set_xive(hw_irq, server, 0xff);
+	if (rc != OPAL_SUCCESS)
+		pr_err("%s: opal_set_xive(0xff) irq=%u returned %lld\n",
+		       __func__, hw_irq, rc);
+}
+
+static void ics_opal_mask_irq(struct irq_data *d)
+{
+	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
+
+	pr_devel("ics-hal: mask virq %d [hw 0x%x]\n", d->irq, hw_irq);
+
+	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
+		return;
+	ics_opal_mask_real_irq(hw_irq);
+}
+
+static int ics_opal_set_affinity(struct irq_data *d,
+				 const struct cpumask *cpumask,
+				 bool force)
+{
+	unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d);
+	int16_t server;
+	int8_t priority;
+	int64_t rc;
+	int wanted_server;
+
+	if (hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS)
+		return -1;
+
+	rc = opal_get_xive(hw_irq, &server, &priority);
+	if (rc != OPAL_SUCCESS) {
+		pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)"
+		       " error %lld\n",
+		       __func__, d->irq, hw_irq, server, rc);
+		return -1;
+	}
+
+	wanted_server = xics_get_irq_server(d->irq, cpumask, 1);
+	if (wanted_server < 0) {
+		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;
+	}
+	server = ics_opal_mangle_server(wanted_server);
+
+	pr_devel("ics-hal: set-affinity irq %d [hw 0x%x] server: 0x%x/0x%x\n",
+		 d->irq, hw_irq, wanted_server, server);
+
+	rc = opal_set_xive(hw_irq, server, priority);
+	if (rc != OPAL_SUCCESS) {
+		pr_err("%s: opal_set_xive(irq=%d [hw 0x%x] server=%x)"
+		       " error %lld\n",
+		       __func__, d->irq, hw_irq, server, rc);
+		return -1;
+	}
+	return 0;
+}
+
+static struct irq_chip ics_opal_irq_chip = {
+	.name = "OPAL ICS",
+	.irq_startup = ics_opal_startup,
+	.irq_mask = ics_opal_mask_irq,
+	.irq_unmask = ics_opal_unmask_irq,
+	.irq_eoi = NULL, /* Patched at init time */
+	.irq_set_affinity = ics_opal_set_affinity
+};
+
+static int ics_opal_map(struct ics *ics, unsigned int virq);
+static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec);
+static long ics_opal_get_server(struct ics *ics, unsigned long vec);
+
+static int ics_opal_host_match(struct ics *ics, struct device_node *node)
+{
+	return 1;
+}
+
+/* Only one global & state struct ics */
+static struct ics ics_hal = {
+	.map		= ics_opal_map,
+	.mask_unknown	= ics_opal_mask_unknown,
+	.get_server	= ics_opal_get_server,
+	.host_match	= ics_opal_host_match,
+};
+
+static int ics_opal_map(struct ics *ics, unsigned int virq)
+{
+	unsigned int hw_irq = (unsigned int)virq_to_hw(virq);
+	int64_t rc;
+	int16_t server;
+	int8_t priority;
+
+	if (WARN_ON(hw_irq == XICS_IPI || hw_irq == XICS_IRQ_SPURIOUS))
+		return -EINVAL;
+
+	/* Check if HAL knows about this interrupt */
+	rc = opal_get_xive(hw_irq, &server, &priority);
+	if (rc != OPAL_SUCCESS)
+		return -ENXIO;
+
+	irq_set_chip_and_handler(virq, &ics_opal_irq_chip, handle_fasteoi_irq);
+	irq_set_chip_data(virq, &ics_hal);
+
+	return 0;
+}
+
+static void ics_opal_mask_unknown(struct ics *ics, unsigned long vec)
+{
+	int64_t rc;
+	int16_t server;
+	int8_t priority;
+
+	/* Check if HAL knows about this interrupt */
+	rc = opal_get_xive(vec, &server, &priority);
+	if (rc != OPAL_SUCCESS)
+		return;
+
+	ics_opal_mask_real_irq(vec);
+}
+
+static long ics_opal_get_server(struct ics *ics, unsigned long vec)
+{
+	int64_t rc;
+	int16_t server;
+	int8_t priority;
+
+	/* Check if HAL knows about this interrupt */
+	rc = opal_get_xive(vec, &server, &priority);
+	if (rc != OPAL_SUCCESS)
+		return -1;
+	return ics_opal_unmangle_server(server);
+}
+
+int __init ics_opal_init(void)
+{
+	if (!firmware_has_feature(FW_FEATURE_OPAL))
+		return -ENODEV;
+
+	/* We need to patch our irq chip's EOI to point to the
+	 * right ICP
+	 */
+	ics_opal_irq_chip.irq_eoi = icp_ops->eoi;
+
+	/* Register ourselves */
+	xics_register_ics(&ics_hal);
+
+	pr_info("ICS OPAL backend registered\n");
+
+	return 0;
+}
diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c
index 445c5a01b766..3d93a8ded0f8 100644
--- a/arch/powerpc/sysdev/xics/xics-common.c
+++ b/arch/powerpc/sysdev/xics/xics-common.c
@@ -409,14 +409,10 @@ void __init xics_init(void)
 	int rc = -1;
 
 	/* Fist locate ICP */
-#ifdef CONFIG_PPC_ICP_HV
 	if (firmware_has_feature(FW_FEATURE_LPAR))
 		rc = icp_hv_init();
-#endif
-#ifdef CONFIG_PPC_ICP_NATIVE
 	if (rc < 0)
 		rc = icp_native_init();
-#endif
 	if (rc < 0) {
 		pr_warning("XICS: Cannot find a Presentation Controller !\n");
 		return;
@@ -429,9 +425,9 @@ void __init xics_init(void)
 	xics_ipi_chip.irq_eoi = icp_ops->eoi;
 
 	/* Now locate ICS */
-#ifdef CONFIG_PPC_ICS_RTAS
 	rc = ics_rtas_init();
-#endif
+	if (rc < 0)
+		rc = ics_opal_init();
 	if (rc < 0)
 		pr_warning("XICS: Cannot find a Source Controller !\n");