Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq updates from Thomas Gleixner:
 "The irq department provides:

   - a major update to the auto affinity management code, which is used
     by multi-queue devices

   - move of the microblaze irq chip driver into the common driver code
     so it can be shared between microblaze, powerpc and MIPS

   - a series of updates to the ARM GICV3 interrupt controller

   - the usual pile of fixes and small improvements all over the place"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
  powerpc/virtex: Use generic xilinx irqchip driver
  irqchip/xilinx: Try to fall back if xlnx,kind-of-intr not provided
  irqchip/xilinx: Add support for parent intc
  irqchip/xilinx: Rename get_irq to xintc_get_irq
  irqchip/xilinx: Restructure and use jump label api
  irqchip/xilinx: Clean up print messages
  microblaze/irqchip: Move intc driver to irqchip
  ARM: virt: Select ARM_GIC_V3_ITS
  ARM: gic-v3-its: Add 32bit support to GICv3 ITS
  irqchip/gic-v3-its: Specialise readq and writeq accesses
  irqchip/gic-v3-its: Specialise flush_dcache operation
  irqchip/gic-v3-its: Narrow down Entry Size when used as a divider
  irqchip/gic-v3-its: Change unsigned types for AArch32 compatibility
  irqchip/gic-v3: Use nops macro for Cavium ThunderX erratum 23154
  irqchip/gic-v3: Convert arm64 GIC accessors to {read,write}_sysreg_s
  genirq/msi: Drop artificial PCI dependency
  irqchip/bcm7038-l1: Implement irq_cpu_offline() callback
  genirq/affinity: Use default affinity mask for reserved vectors
  genirq/affinity: Take reserved vectors into account when spreading irqs
  PCI: Remove the irq_affinity mask from struct pci_dev
  ...

6 files changed, 352 insertions, 73 deletions

diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index bc0af3307bbf..ae96731cd2fb 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -211,6 +211,10 @@ config XTENSA_MX
 	bool
 	select IRQ_DOMAIN
 
+config XILINX_INTC
+	bool
+	select IRQ_DOMAIN
+
 config IRQ_CROSSBAR
 	bool
 	help
diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index e4dbfc85abdb..0e55d94065bf 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_TB10X_IRQC)		+= irq-tb10x.o
 obj-$(CONFIG_TS4800_IRQ)		+= irq-ts4800.o
 obj-$(CONFIG_XTENSA)			+= irq-xtensa-pic.o
 obj-$(CONFIG_XTENSA_MX)			+= irq-xtensa-mx.o
+obj-$(CONFIG_XILINX_INTC)		+= irq-xilinx-intc.o
 obj-$(CONFIG_IRQ_CROSSBAR)		+= irq-crossbar.o
 obj-$(CONFIG_SOC_VF610)			+= irq-vf610-mscm-ir.o
 obj-$(CONFIG_BCM6345_L1_IRQ)		+= irq-bcm6345-l1.o
diff --git a/drivers/irqchip/irq-bcm7038-l1.c b/drivers/irqchip/irq-bcm7038-l1.c
index 353c54986211..c2662a1bfdd3 100644
--- a/drivers/irqchip/irq-bcm7038-l1.c
+++ b/drivers/irqchip/irq-bcm7038-l1.c
@@ -215,6 +215,31 @@ static int bcm7038_l1_set_affinity(struct irq_data *d,
 	return 0;
 }
 
+static void bcm7038_l1_cpu_offline(struct irq_data *d)
+{
+	struct cpumask *mask = irq_data_get_affinity_mask(d);
+	int cpu = smp_processor_id();
+	cpumask_t new_affinity;
+
+	/* This CPU was not on the affinity mask */
+	if (!cpumask_test_cpu(cpu, mask))
+		return;
+
+	if (cpumask_weight(mask) > 1) {
+		/*
+		 * Multiple CPU affinity, remove this CPU from the affinity
+		 * mask
+		 */
+		cpumask_copy(&new_affinity, mask);
+		cpumask_clear_cpu(cpu, &new_affinity);
+	} else {
+		/* Only CPU, put on the lowest online CPU */
+		cpumask_clear(&new_affinity);
+		cpumask_set_cpu(cpumask_first(cpu_online_mask), &new_affinity);
+	}
+	irq_set_affinity_locked(d, &new_affinity, false);
+}
+
 static int __init bcm7038_l1_init_one(struct device_node *dn,
 				      unsigned int idx,
 				      struct bcm7038_l1_chip *intc)
@@ -266,6 +291,7 @@ static struct irq_chip bcm7038_l1_irq_chip = {
 	.irq_mask		= bcm7038_l1_mask,
 	.irq_unmask		= bcm7038_l1_unmask,
 	.irq_set_affinity	= bcm7038_l1_set_affinity,
+	.irq_cpu_offline	= bcm7038_l1_cpu_offline,
 };
 
 static int bcm7038_l1_map(struct irq_domain *d, unsigned int virq,
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index c5dee300e8a3..69b040f47d56 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -37,7 +37,6 @@
 #include <linux/irqchip.h>
 #include <linux/irqchip/arm-gic-v3.h>
 
-#include <asm/cacheflush.h>
 #include <asm/cputype.h>
 #include <asm/exception.h>
 
@@ -196,7 +195,7 @@ typedef struct its_collection *(*its_cmd_builder_t)(struct its_cmd_block *,
 
 static void its_encode_cmd(struct its_cmd_block *cmd, u8 cmd_nr)
 {
-	cmd->raw_cmd[0] &= ~0xffUL;
+	cmd->raw_cmd[0] &= ~0xffULL;
 	cmd->raw_cmd[0] |= cmd_nr;
 }
 
@@ -208,43 +207,43 @@ static void its_encode_devid(struct its_cmd_block *cmd, u32 devid)
 
 static void its_encode_event_id(struct its_cmd_block *cmd, u32 id)
 {
-	cmd->raw_cmd[1] &= ~0xffffffffUL;
+	cmd->raw_cmd[1] &= ~0xffffffffULL;
 	cmd->raw_cmd[1] |= id;
 }
 
 static void its_encode_phys_id(struct its_cmd_block *cmd, u32 phys_id)
 {
-	cmd->raw_cmd[1] &= 0xffffffffUL;
+	cmd->raw_cmd[1] &= 0xffffffffULL;
 	cmd->raw_cmd[1] |= ((u64)phys_id) << 32;
 }
 
 static void its_encode_size(struct its_cmd_block *cmd, u8 size)
 {
-	cmd->raw_cmd[1] &= ~0x1fUL;
+	cmd->raw_cmd[1] &= ~0x1fULL;
 	cmd->raw_cmd[1] |= size & 0x1f;
 }
 
 static void its_encode_itt(struct its_cmd_block *cmd, u64 itt_addr)
 {
-	cmd->raw_cmd[2] &= ~0xffffffffffffUL;
-	cmd->raw_cmd[2] |= itt_addr & 0xffffffffff00UL;
+	cmd->raw_cmd[2] &= ~0xffffffffffffULL;
+	cmd->raw_cmd[2] |= itt_addr & 0xffffffffff00ULL;
 }
 
 static void its_encode_valid(struct its_cmd_block *cmd, int valid)
 {
-	cmd->raw_cmd[2] &= ~(1UL << 63);
+	cmd->raw_cmd[2] &= ~(1ULL << 63);
 	cmd->raw_cmd[2] |= ((u64)!!valid) << 63;
 }
 
 static void its_encode_target(struct its_cmd_block *cmd, u64 target_addr)
 {
-	cmd->raw_cmd[2] &= ~(0xffffffffUL << 16);
-	cmd->raw_cmd[2] |= (target_addr & (0xffffffffUL << 16));
+	cmd->raw_cmd[2] &= ~(0xffffffffULL << 16);
+	cmd->raw_cmd[2] |= (target_addr & (0xffffffffULL << 16));
 }
 
 static void its_encode_collection(struct its_cmd_block *cmd, u16 col)
 {
-	cmd->raw_cmd[2] &= ~0xffffUL;
+	cmd->raw_cmd[2] &= ~0xffffULL;
 	cmd->raw_cmd[2] |= col;
 }
 
@@ -433,7 +432,7 @@ static void its_flush_cmd(struct its_node *its, struct its_cmd_block *cmd)
 	 * the ITS.
 	 */
 	if (its->flags & ITS_FLAGS_CMDQ_NEEDS_FLUSHING)
-		__flush_dcache_area(cmd, sizeof(*cmd));
+		gic_flush_dcache_to_poc(cmd, sizeof(*cmd));
 	else
 		dsb(ishst);
 }
@@ -602,7 +601,7 @@ static void lpi_set_config(struct irq_data *d, bool enable)
 	 * Humpf...
 	 */
 	if (gic_rdists->flags & RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING)
-		__flush_dcache_area(cfg, sizeof(*cfg));
+		gic_flush_dcache_to_poc(cfg, sizeof(*cfg));
 	else
 		dsb(ishst);
 	its_send_inv(its_dev, id);
@@ -657,8 +656,8 @@ static void its_irq_compose_msi_msg(struct irq_data *d, struct msi_msg *msg)
 	its = its_dev->its;
 	addr = its->phys_base + GITS_TRANSLATER;
 
-	msg->address_lo		= addr & ((1UL << 32) - 1);
-	msg->address_hi		= addr >> 32;
+	msg->address_lo		= lower_32_bits(addr);
+	msg->address_hi		= upper_32_bits(addr);
 	msg->data		= its_get_event_id(d);
 
 	iommu_dma_map_msi_msg(d->irq, msg);
@@ -817,7 +816,7 @@ static int __init its_alloc_lpi_tables(void)
 	       LPI_PROPBASE_SZ);
 
 	/* Make sure the GIC will observe the written configuration */
-	__flush_dcache_area(page_address(gic_rdists->prop_page), LPI_PROPBASE_SZ);
+	gic_flush_dcache_to_poc(page_address(gic_rdists->prop_page), LPI_PROPBASE_SZ);
 
 	return 0;
 }
@@ -836,7 +835,7 @@ static u64 its_read_baser(struct its_node *its, struct its_baser *baser)
 {
 	u32 idx = baser - its->tables;
 
-	return readq_relaxed(its->base + GITS_BASER + (idx << 3));
+	return gits_read_baser(its->base + GITS_BASER + (idx << 3));
 }
 
 static void its_write_baser(struct its_node *its, struct its_baser *baser,
@@ -844,7 +843,7 @@ static void its_write_baser(struct its_node *its, struct its_baser *baser,
 {
 	u32 idx = baser - its->tables;
 
-	writeq_relaxed(val, its->base + GITS_BASER + (idx << 3));
+	gits_write_baser(val, its->base + GITS_BASER + (idx << 3));
 	baser->val = its_read_baser(its, baser);
 }
 
@@ -910,7 +909,7 @@ retry_baser:
 		shr = tmp & GITS_BASER_SHAREABILITY_MASK;
 		if (!shr) {
 			cache = GITS_BASER_nC;
-			__flush_dcache_area(base, PAGE_ORDER_TO_SIZE(order));
+			gic_flush_dcache_to_poc(base, PAGE_ORDER_TO_SIZE(order));
 		}
 		goto retry_baser;
 	}
@@ -935,9 +934,9 @@ retry_baser:
 	}
 
 	if (val != tmp) {
-		pr_err("ITS@%pa: %s doesn't stick: %lx %lx\n",
+		pr_err("ITS@%pa: %s doesn't stick: %llx %llx\n",
 		       &its->phys_base, its_base_type_string[type],
-		       (unsigned long) val, (unsigned long) tmp);
+		       val, tmp);
 		free_pages((unsigned long)base, order);
 		return -ENXIO;
 	}
@@ -948,7 +947,7 @@ retry_baser:
 	tmp = indirect ? GITS_LVL1_ENTRY_SIZE : esz;
 
 	pr_info("ITS@%pa: allocated %d %s @%lx (%s, esz %d, psz %dK, shr %d)\n",
-		&its->phys_base, (int)(PAGE_ORDER_TO_SIZE(order) / tmp),
+		&its->phys_base, (int)(PAGE_ORDER_TO_SIZE(order) / (int)tmp),
 		its_base_type_string[type],
 		(unsigned long)virt_to_phys(base),
 		indirect ? "indirect" : "flat", (int)esz,
@@ -983,7 +982,7 @@ static bool its_parse_baser_device(struct its_node *its, struct its_baser *baser
 			 * which is reported by ITS hardware times lvl1 table
 			 * entry size.
 			 */
-			ids -= ilog2(psz / esz);
+			ids -= ilog2(psz / (int)esz);
 			esz = GITS_LVL1_ENTRY_SIZE;
 		}
 	}
@@ -998,7 +997,7 @@ static bool its_parse_baser_device(struct its_node *its, struct its_baser *baser
 	new_order = max_t(u32, get_order(esz << ids), new_order);
 	if (new_order >= MAX_ORDER) {
 		new_order = MAX_ORDER - 1;
-		ids = ilog2(PAGE_ORDER_TO_SIZE(new_order) / esz);
+		ids = ilog2(PAGE_ORDER_TO_SIZE(new_order) / (int)esz);
 		pr_warn("ITS@%pa: Device Table too large, reduce ids %u->%u\n",
 			&its->phys_base, its->device_ids, ids);
 	}
@@ -1102,7 +1101,7 @@ static void its_cpu_init_lpis(void)
 		}
 
 		/* Make sure the GIC will observe the zero-ed page */
-		__flush_dcache_area(page_address(pend_page), LPI_PENDBASE_SZ);
+		gic_flush_dcache_to_poc(page_address(pend_page), LPI_PENDBASE_SZ);
 
 		paddr = page_to_phys(pend_page);
 		pr_info("CPU%d: using LPI pending table @%pa\n",
@@ -1126,8 +1125,8 @@ static void its_cpu_init_lpis(void)
 	       GICR_PROPBASER_WaWb |
 	       ((LPI_NRBITS - 1) & GICR_PROPBASER_IDBITS_MASK));
 
-	writeq_relaxed(val, rbase + GICR_PROPBASER);
-	tmp = readq_relaxed(rbase + GICR_PROPBASER);
+	gicr_write_propbaser(val, rbase + GICR_PROPBASER);
+	tmp = gicr_read_propbaser(rbase + GICR_PROPBASER);
 
 	if ((tmp ^ val) & GICR_PROPBASER_SHAREABILITY_MASK) {
 		if (!(tmp & GICR_PROPBASER_SHAREABILITY_MASK)) {
@@ -1139,7 +1138,7 @@ static void its_cpu_init_lpis(void)
 			val &= ~(GICR_PROPBASER_SHAREABILITY_MASK |
 				 GICR_PROPBASER_CACHEABILITY_MASK);
 			val |= GICR_PROPBASER_nC;
-			writeq_relaxed(val, rbase + GICR_PROPBASER);
+			gicr_write_propbaser(val, rbase + GICR_PROPBASER);
 		}
 		pr_info_once("GIC: using cache flushing for LPI property table\n");
 		gic_rdists->flags |= RDIST_FLAGS_PROPBASE_NEEDS_FLUSHING;
@@ -1150,8 +1149,8 @@ static void its_cpu_init_lpis(void)
 	       GICR_PENDBASER_InnerShareable |
 	       GICR_PENDBASER_WaWb);
 
-	writeq_relaxed(val, rbase + GICR_PENDBASER);
-	tmp = readq_relaxed(rbase + GICR_PENDBASER);
+	gicr_write_pendbaser(val, rbase + GICR_PENDBASER);
+	tmp = gicr_read_pendbaser(rbase + GICR_PENDBASER);
 
 	if (!(tmp & GICR_PENDBASER_SHAREABILITY_MASK)) {
 		/*
@@ -1161,7 +1160,7 @@ static void its_cpu_init_lpis(void)
 		val &= ~(GICR_PENDBASER_SHAREABILITY_MASK |
 			 GICR_PENDBASER_CACHEABILITY_MASK);
 		val |= GICR_PENDBASER_nC;
-		writeq_relaxed(val, rbase + GICR_PENDBASER);
+		gicr_write_pendbaser(val, rbase + GICR_PENDBASER);
 	}
 
 	/* Enable LPIs */
@@ -1287,13 +1286,13 @@ static bool its_alloc_device_table(struct its_node *its, u32 dev_id)
 
 		/* Flush Lvl2 table to PoC if hw doesn't support coherency */
 		if (!(baser->val & GITS_BASER_SHAREABILITY_MASK))
-			__flush_dcache_area(page_address(page), baser->psz);
+			gic_flush_dcache_to_poc(page_address(page), baser->psz);
 
 		table[idx] = cpu_to_le64(page_to_phys(page) | GITS_BASER_VALID);
 
 		/* Flush Lvl1 entry to PoC if hw doesn't support coherency */
 		if (!(baser->val & GITS_BASER_SHAREABILITY_MASK))
-			__flush_dcache_area(table + idx, GITS_LVL1_ENTRY_SIZE);
+			gic_flush_dcache_to_poc(table + idx, GITS_LVL1_ENTRY_SIZE);
 
 		/* Ensure updated table contents are visible to ITS hardware */
 		dsb(sy);
@@ -1340,7 +1339,7 @@ static struct its_device *its_create_device(struct its_node *its, u32 dev_id,
 		return NULL;
 	}
 
-	__flush_dcache_area(itt, sz);
+	gic_flush_dcache_to_poc(itt, sz);
 
 	dev->its = its;
 	dev->itt = itt;
@@ -1717,8 +1716,8 @@ static int __init its_probe_one(struct resource *res,
 		 (ITS_CMD_QUEUE_SZ / SZ_4K - 1)	|
 		 GITS_CBASER_VALID);
 
-	writeq_relaxed(baser, its->base + GITS_CBASER);
-	tmp = readq_relaxed(its->base + GITS_CBASER);
+	gits_write_cbaser(baser, its->base + GITS_CBASER);
+	tmp = gits_read_cbaser(its->base + GITS_CBASER);
 
 	if ((tmp ^ baser) & GITS_CBASER_SHAREABILITY_MASK) {
 		if (!(tmp & GITS_CBASER_SHAREABILITY_MASK)) {
@@ -1730,13 +1729,13 @@ static int __init its_probe_one(struct resource *res,
 			baser &= ~(GITS_CBASER_SHAREABILITY_MASK |
 				   GITS_CBASER_CACHEABILITY_MASK);
 			baser |= GITS_CBASER_nC;
-			writeq_relaxed(baser, its->base + GITS_CBASER);
+			gits_write_cbaser(baser, its->base + GITS_CBASER);
 		}
 		pr_info("ITS: using cache flushing for cmd queue\n");
 		its->flags |= ITS_FLAGS_CMDQ_NEEDS_FLUSHING;
 	}
 
-	writeq_relaxed(0, its->base + GITS_CWRITER);
+	gits_write_cwriter(0, its->base + GITS_CWRITER);
 	writel_relaxed(GITS_CTLR_ENABLE, its->base + GITS_CTLR);
 
 	err = its_init_domain(handle, its);
diff --git a/drivers/irqchip/irq-xilinx-intc.c b/drivers/irqchip/irq-xilinx-intc.c
new file mode 100644
index 000000000000..3db7ab1c9741
--- /dev/null
+++ b/drivers/irqchip/irq-xilinx-intc.c
@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2007-2013 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2012-2013 Xilinx, Inc.
+ * Copyright (C) 2007-2009 PetaLogix
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/irqchip.h>
+#include <linux/irqchip/chained_irq.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/jump_label.h>
+#include <linux/bug.h>
+#include <linux/of_irq.h>
+
+/* No one else should require these constants, so define them locally here. */
+#define ISR 0x00			/* Interrupt Status Register */
+#define IPR 0x04			/* Interrupt Pending Register */
+#define IER 0x08			/* Interrupt Enable Register */
+#define IAR 0x0c			/* Interrupt Acknowledge Register */
+#define SIE 0x10			/* Set Interrupt Enable bits */
+#define CIE 0x14			/* Clear Interrupt Enable bits */
+#define IVR 0x18			/* Interrupt Vector Register */
+#define MER 0x1c			/* Master Enable Register */
+
+#define MER_ME (1<<0)
+#define MER_HIE (1<<1)
+
+static DEFINE_STATIC_KEY_FALSE(xintc_is_be);
+
+struct xintc_irq_chip {
+	void		__iomem *base;
+	struct		irq_domain *root_domain;
+	u32		intr_mask;
+};
+
+static struct xintc_irq_chip *xintc_irqc;
+
+static void xintc_write(int reg, u32 data)
+{
+	if (static_branch_unlikely(&xintc_is_be))
+		iowrite32be(data, xintc_irqc->base + reg);
+	else
+		iowrite32(data, xintc_irqc->base + reg);
+}
+
+static unsigned int xintc_read(int reg)
+{
+	if (static_branch_unlikely(&xintc_is_be))
+		return ioread32be(xintc_irqc->base + reg);
+	else
+		return ioread32(xintc_irqc->base + reg);
+}
+
+static void intc_enable_or_unmask(struct irq_data *d)
+{
+	unsigned long mask = 1 << d->hwirq;
+
+	pr_debug("irq-xilinx: enable_or_unmask: %ld\n", d->hwirq);
+
+	/* ack level irqs because they can't be acked during
+	 * ack function since the handle_level_irq function
+	 * acks the irq before calling the interrupt handler
+	 */
+	if (irqd_is_level_type(d))
+		xintc_write(IAR, mask);
+
+	xintc_write(SIE, mask);
+}
+
+static void intc_disable_or_mask(struct irq_data *d)
+{
+	pr_debug("irq-xilinx: disable: %ld\n", d->hwirq);
+	xintc_write(CIE, 1 << d->hwirq);
+}
+
+static void intc_ack(struct irq_data *d)
+{
+	pr_debug("irq-xilinx: ack: %ld\n", d->hwirq);
+	xintc_write(IAR, 1 << d->hwirq);
+}
+
+static void intc_mask_ack(struct irq_data *d)
+{
+	unsigned long mask = 1 << d->hwirq;
+
+	pr_debug("irq-xilinx: disable_and_ack: %ld\n", d->hwirq);
+	xintc_write(CIE, mask);
+	xintc_write(IAR, mask);
+}
+
+static struct irq_chip intc_dev = {
+	.name = "Xilinx INTC",
+	.irq_unmask = intc_enable_or_unmask,
+	.irq_mask = intc_disable_or_mask,
+	.irq_ack = intc_ack,
+	.irq_mask_ack = intc_mask_ack,
+};
+
+unsigned int xintc_get_irq(void)
+{
+	unsigned int hwirq, irq = -1;
+
+	hwirq = xintc_read(IVR);
+	if (hwirq != -1U)
+		irq = irq_find_mapping(xintc_irqc->root_domain, hwirq);
+
+	pr_debug("irq-xilinx: hwirq=%d, irq=%d\n", hwirq, irq);
+
+	return irq;
+}
+
+static int xintc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
+{
+	if (xintc_irqc->intr_mask & (1 << hw)) {
+		irq_set_chip_and_handler_name(irq, &intc_dev,
+						handle_edge_irq, "edge");
+		irq_clear_status_flags(irq, IRQ_LEVEL);
+	} else {
+		irq_set_chip_and_handler_name(irq, &intc_dev,
+						handle_level_irq, "level");
+		irq_set_status_flags(irq, IRQ_LEVEL);
+	}
+	return 0;
+}
+
+static const struct irq_domain_ops xintc_irq_domain_ops = {
+	.xlate = irq_domain_xlate_onetwocell,
+	.map = xintc_map,
+};
+
+static void xil_intc_irq_handler(struct irq_desc *desc)
+{
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+	u32 pending;
+
+	chained_irq_enter(chip, desc);
+	do {
+		pending = xintc_get_irq();
+		if (pending == -1U)
+			break;
+		generic_handle_irq(pending);
+	} while (true);
+	chained_irq_exit(chip, desc);
+}
+
+static int __init xilinx_intc_of_init(struct device_node *intc,
+					     struct device_node *parent)
+{
+	u32 nr_irq;
+	int ret, irq;
+	struct xintc_irq_chip *irqc;
+
+	if (xintc_irqc) {
+		pr_err("irq-xilinx: Multiple instances aren't supported\n");
+		return -EINVAL;
+	}
+
+	irqc = kzalloc(sizeof(*irqc), GFP_KERNEL);
+	if (!irqc)
+		return -ENOMEM;
+
+	xintc_irqc = irqc;
+
+	irqc->base = of_iomap(intc, 0);
+	BUG_ON(!irqc->base);
+
+	ret = of_property_read_u32(intc, "xlnx,num-intr-inputs", &nr_irq);
+	if (ret < 0) {
+		pr_err("irq-xilinx: unable to read xlnx,num-intr-inputs\n");
+		goto err_alloc;
+	}
+
+	ret = of_property_read_u32(intc, "xlnx,kind-of-intr", &irqc->intr_mask);
+	if (ret < 0) {
+		pr_warn("irq-xilinx: unable to read xlnx,kind-of-intr\n");
+		irqc->intr_mask = 0;
+	}
+
+	if (irqc->intr_mask >> nr_irq)
+		pr_warn("irq-xilinx: mismatch in kind-of-intr param\n");
+
+	pr_info("irq-xilinx: %s: num_irq=%d, edge=0x%x\n",
+		intc->full_name, nr_irq, irqc->intr_mask);
+
+
+	/*
+	 * Disable all external interrupts until they are
+	 * explicity requested.
+	 */
+	xintc_write(IER, 0);
+
+	/* Acknowledge any pending interrupts just in case. */
+	xintc_write(IAR, 0xffffffff);
+
+	/* Turn on the Master Enable. */
+	xintc_write(MER, MER_HIE | MER_ME);
+	if (!(xintc_read(MER) & (MER_HIE | MER_ME))) {
+		static_branch_enable(&xintc_is_be);
+		xintc_write(MER, MER_HIE | MER_ME);
+	}
+
+	irqc->root_domain = irq_domain_add_linear(intc, nr_irq,
+						  &xintc_irq_domain_ops, irqc);
+	if (!irqc->root_domain) {
+		pr_err("irq-xilinx: Unable to create IRQ domain\n");
+		goto err_alloc;
+	}
+
+	if (parent) {
+		irq = irq_of_parse_and_map(intc, 0);
+		if (irq) {
+			irq_set_chained_handler_and_data(irq,
+							 xil_intc_irq_handler,
+							 irqc);
+		} else {
+			pr_err("irq-xilinx: interrupts property not in DT\n");
+			ret = -EINVAL;
+			goto err_alloc;
+		}
+	} else {
+		irq_set_default_host(irqc->root_domain);
+	}
+
+	return 0;
+
+err_alloc:
+	xintc_irqc = NULL;
+	kfree(irqc);
+	return ret;
+
+}
+
+IRQCHIP_DECLARE(xilinx_intc_xps, "xlnx,xps-intc-1.00.a", xilinx_intc_of_init);
+IRQCHIP_DECLARE(xilinx_intc_opb, "xlnx,opb-intc-1.00.c", xilinx_intc_of_init);
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index ad70507cfb56..dd27f73a45fc 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -551,14 +551,14 @@ error_attrs:
 }
 
 static struct msi_desc *
-msi_setup_entry(struct pci_dev *dev, int nvec, bool affinity)
+msi_setup_entry(struct pci_dev *dev, int nvec, const struct irq_affinity *affd)
 {
 	struct cpumask *masks = NULL;
 	struct msi_desc *entry;
 	u16 control;
 
-	if (affinity) {
-		masks = irq_create_affinity_masks(dev->irq_affinity, nvec);
+	if (affd) {
+		masks = irq_create_affinity_masks(nvec, affd);
 		if (!masks)
 			pr_err("Unable to allocate affinity masks, ignoring\n");
 	}
@@ -618,7 +618,8 @@ static int msi_verify_entries(struct pci_dev *dev)
  * an error, and a positive return value indicates the number of interrupts
  * which could have been allocated.
  */
-static int msi_capability_init(struct pci_dev *dev, int nvec, bool affinity)
+static int msi_capability_init(struct pci_dev *dev, int nvec,
+			       const struct irq_affinity *affd)
 {
 	struct msi_desc *entry;
 	int ret;
@@ -626,7 +627,7 @@ static int msi_capability_init(struct pci_dev *dev, int nvec, bool affinity)
 
 	pci_msi_set_enable(dev, 0);	/* Disable MSI during set up */
 
-	entry = msi_setup_entry(dev, nvec, affinity);
+	entry = msi_setup_entry(dev, nvec, affd);
 	if (!entry)
 		return -ENOMEM;
 
@@ -690,14 +691,14 @@ static void __iomem *msix_map_region(struct pci_dev *dev, unsigned nr_entries)
 
 static int msix_setup_entries(struct pci_dev *dev, void __iomem *base,
 			      struct msix_entry *entries, int nvec,
-			      bool affinity)
+			      const struct irq_affinity *affd)
 {
 	struct cpumask *curmsk, *masks = NULL;
 	struct msi_desc *entry;
 	int ret, i;
 
-	if (affinity) {
-		masks = irq_create_affinity_masks(dev->irq_affinity, nvec);
+	if (affd) {
+		masks = irq_create_affinity_masks(nvec, affd);
 		if (!masks)
 			pr_err("Unable to allocate affinity masks, ignoring\n");
 	}
@@ -753,14 +754,14 @@ static void msix_program_entries(struct pci_dev *dev,
  * @dev: pointer to the pci_dev data structure of MSI-X device function
  * @entries: pointer to an array of struct msix_entry entries
  * @nvec: number of @entries
- * @affinity: flag to indicate cpu irq affinity mask should be set
+ * @affd: Optional pointer to enable automatic affinity assignement
  *
  * Setup the MSI-X capability structure of device function with a
  * single MSI-X irq. A return of zero indicates the successful setup of
  * requested MSI-X entries with allocated irqs or non-zero for otherwise.
  **/
 static int msix_capability_init(struct pci_dev *dev, struct msix_entry *entries,
-				int nvec, bool affinity)
+				int nvec, const struct irq_affinity *affd)
 {
 	int ret;
 	u16 control;
@@ -775,7 +776,7 @@ static int msix_capability_init(struct pci_dev *dev, struct msix_entry *entries,
 	if (!base)
 		return -ENOMEM;
 
-	ret = msix_setup_entries(dev, base, entries, nvec, affinity);
+	ret = msix_setup_entries(dev, base, entries, nvec, affd);
 	if (ret)
 		return ret;
 
@@ -956,7 +957,7 @@ int pci_msix_vec_count(struct pci_dev *dev)
 EXPORT_SYMBOL(pci_msix_vec_count);
 
 static int __pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries,
-			     int nvec, bool affinity)
+			     int nvec, const struct irq_affinity *affd)
 {
 	int nr_entries;
 	int i, j;
@@ -988,7 +989,7 @@ static int __pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries,
 		dev_info(&dev->dev, "can't enable MSI-X (MSI IRQ already assigned)\n");
 		return -EINVAL;
 	}
-	return msix_capability_init(dev, entries, nvec, affinity);
+	return msix_capability_init(dev, entries, nvec, affd);
 }
 
 /**
@@ -1008,7 +1009,7 @@ static int __pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries,
  **/
 int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
 {
-	return __pci_enable_msix(dev, entries, nvec, false);
+	return __pci_enable_msix(dev, entries, nvec, NULL);
 }
 EXPORT_SYMBOL(pci_enable_msix);
 
@@ -1059,9 +1060,8 @@ int pci_msi_enabled(void)
 EXPORT_SYMBOL(pci_msi_enabled);
 
 static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
-		unsigned int flags)
+				  const struct irq_affinity *affd)
 {
-	bool affinity = flags & PCI_IRQ_AFFINITY;
 	int nvec;
 	int rc;
 
@@ -1090,14 +1090,13 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
 		nvec = maxvec;
 
 	for (;;) {
-		if (affinity) {
-			nvec = irq_calc_affinity_vectors(dev->irq_affinity,
-					nvec);
+		if (affd) {
+			nvec = irq_calc_affinity_vectors(nvec, affd);
 			if (nvec < minvec)
 				return -ENOSPC;
 		}
 
-		rc = msi_capability_init(dev, nvec, affinity);
+		rc = msi_capability_init(dev, nvec, affd);
 		if (rc == 0)
 			return nvec;
 
@@ -1124,29 +1123,27 @@ static int __pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec,
  **/
 int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec)
 {
-	return __pci_enable_msi_range(dev, minvec, maxvec, 0);
+	return __pci_enable_msi_range(dev, minvec, maxvec, NULL);
 }
 EXPORT_SYMBOL(pci_enable_msi_range);
 
 static int __pci_enable_msix_range(struct pci_dev *dev,
-		struct msix_entry *entries, int minvec, int maxvec,
-		unsigned int flags)
+				   struct msix_entry *entries, int minvec,
+				   int maxvec, const struct irq_affinity *affd)
 {
-	bool affinity = flags & PCI_IRQ_AFFINITY;
 	int rc, nvec = maxvec;
 
 	if (maxvec < minvec)
 		return -ERANGE;
 
 	for (;;) {
-		if (affinity) {
-			nvec = irq_calc_affinity_vectors(dev->irq_affinity,
-					nvec);
+		if (affd) {
+			nvec = irq_calc_affinity_vectors(nvec, affd);
 			if (nvec < minvec)
 				return -ENOSPC;
 		}
 
-		rc = __pci_enable_msix(dev, entries, nvec, affinity);
+		rc = __pci_enable_msix(dev, entries, nvec, affd);
 		if (rc == 0)
 			return nvec;
 
@@ -1177,16 +1174,17 @@ static int __pci_enable_msix_range(struct pci_dev *dev,
 int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
 		int minvec, int maxvec)
 {
-	return __pci_enable_msix_range(dev, entries, minvec, maxvec, 0);
+	return __pci_enable_msix_range(dev, entries, minvec, maxvec, NULL);
 }
 EXPORT_SYMBOL(pci_enable_msix_range);
 
 /**
- * pci_alloc_irq_vectors - allocate multiple IRQs for a device
+ * pci_alloc_irq_vectors_affinity - allocate multiple IRQs for a device
  * @dev:		PCI device to operate on
  * @min_vecs:		minimum number of vectors required (must be >= 1)
  * @max_vecs:		maximum (desired) number of vectors
  * @flags:		flags or quirks for the allocation
+ * @affd:		optional description of the affinity requirements
  *
  * Allocate up to @max_vecs interrupt vectors for @dev, using MSI-X or MSI
  * vectors if available, and fall back to a single legacy vector
@@ -1198,20 +1196,30 @@ EXPORT_SYMBOL(pci_enable_msix_range);
  * To get the Linux IRQ number used for a vector that can be passed to
  * request_irq() use the pci_irq_vector() helper.
  */
-int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
-		unsigned int max_vecs, unsigned int flags)
+int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
+				   unsigned int max_vecs, unsigned int flags,
+				   const struct irq_affinity *affd)
 {
+	static const struct irq_affinity msi_default_affd;
 	int vecs = -ENOSPC;
 
+	if (flags & PCI_IRQ_AFFINITY) {
+		if (!affd)
+			affd = &msi_default_affd;
+	} else {
+		if (WARN_ON(affd))
+			affd = NULL;
+	}
+
 	if (flags & PCI_IRQ_MSIX) {
 		vecs = __pci_enable_msix_range(dev, NULL, min_vecs, max_vecs,
-				flags);
+				affd);
 		if (vecs > 0)
 			return vecs;
 	}
 
 	if (flags & PCI_IRQ_MSI) {
-		vecs = __pci_enable_msi_range(dev, min_vecs, max_vecs, flags);
+		vecs = __pci_enable_msi_range(dev, min_vecs, max_vecs, affd);
 		if (vecs > 0)
 			return vecs;
 	}
@@ -1224,7 +1232,7 @@ int pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
 
 	return vecs;
 }
-EXPORT_SYMBOL(pci_alloc_irq_vectors);
+EXPORT_SYMBOL(pci_alloc_irq_vectors_affinity);
 
 /**
  * pci_free_irq_vectors - free previously allocated IRQs for a device