14 files changed, 297 insertions, 235 deletions

diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c
index 389fa5c669de..bf0fd48cbd80 100644
--- a/arch/arm/mach-ns9xxx/irq.c
+++ b/arch/arm/mach-ns9xxx/irq.c
@@ -31,17 +31,11 @@ static void ns9xxx_mask_irq(struct irq_data *d)
         __raw_writel(ic, SYS_IC(prio / 4));
 }
 
-static void ns9xxx_ack_irq(struct irq_data *d)
+static void ns9xxx_eoi_irq(struct irq_data *d)
 {
         __raw_writel(0, SYS_ISRADDR);
 }
 
-static void ns9xxx_maskack_irq(struct irq_data *d)
-{
-        ns9xxx_mask_irq(d);
-        ns9xxx_ack_irq(d);
-}
-
 static void ns9xxx_unmask_irq(struct irq_data *d)
 {
         /* XXX: better use cpp symbols */
@@ -52,56 +46,11 @@ static void ns9xxx_unmask_irq(struct irq_data *d)
 }
 
 static struct irq_chip ns9xxx_chip = {
-        .irq_ack        = ns9xxx_ack_irq,
+        .irq_eoi        = ns9xxx_eoi_irq,
         .irq_mask       = ns9xxx_mask_irq,
-        .irq_mask_ack   = ns9xxx_maskack_irq,
         .irq_unmask     = ns9xxx_unmask_irq,
 };
 
-#if 0
-#define handle_irq handle_level_irq
-#else
-static void handle_prio_irq(unsigned int irq, struct irq_desc *desc)
-{
-        struct irqaction *action;
-        irqreturn_t action_ret;
-
-        raw_spin_lock(&desc->lock);
-
-        BUG_ON(desc->status & IRQ_INPROGRESS);
-
-        desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-        kstat_incr_irqs_this_cpu(irq, desc);
-
-        action = desc->action;
-        if (unlikely(!action || (desc->status & IRQ_DISABLED)))
-                goto out_mask;
-
-        desc->status |= IRQ_INPROGRESS;
-        raw_spin_unlock(&desc->lock);
-
-        action_ret = handle_IRQ_event(irq, action);
-
-        /* XXX: There is no direct way to access noirqdebug, so check
-         * unconditionally for spurious irqs...
-         * Maybe this function should go to kernel/irq/chip.c? */
-        note_interrupt(irq, desc, action_ret);
-
-        raw_spin_lock(&desc->lock);
-        desc->status &= ~IRQ_INPROGRESS;
-
-        if (desc->status & IRQ_DISABLED)
-out_mask:
-                desc->irq_data.chip->irq_mask(&desc->irq_data);
-
-        /* ack unconditionally to unmask lower prio irqs */
-        desc->irq_data.chip->irq_ack(&desc->irq_data);
-
-        raw_spin_unlock(&desc->lock);
-}
-#define handle_irq handle_prio_irq
-#endif
-
 void __init ns9xxx_init_irq(void)
 {
         int i;
@@ -119,7 +68,8 @@ void __init ns9xxx_init_irq(void)
 
         for (i = 0; i <= 31; ++i) {
                 set_irq_chip(i, &ns9xxx_chip);
-                set_irq_handler(i, handle_irq);
+                set_irq_handler(i, handle_fasteoi_irq);
                 set_irq_flags(i, IRQF_VALID);
+                irq_set_status_flags(i, IRQ_LEVEL);
         }
 }
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig
index 48cd7d2e1b75..81239ebed83f 100644
--- a/arch/powerpc/platforms/cell/Kconfig
+++ b/arch/powerpc/platforms/cell/Kconfig
@@ -9,6 +9,7 @@ config PPC_CELL_COMMON
         select PPC_INDIRECT_IO
         select PPC_NATIVE
         select PPC_RTAS
+        select IRQ_EDGE_EOI_HANDLER
 
 config PPC_CELL_NATIVE
         bool
diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 624d26e72f1d..ec9fc7d82068 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -235,54 +235,6 @@ static int iic_host_match(struct irq_host *h, struct device_node *node)
                                     "IBM,CBEA-Internal-Interrupt-Controller");
 }
 
-extern int noirqdebug;
-
-static void handle_iic_irq(unsigned int irq, struct irq_desc *desc)
-{
-        struct irq_chip *chip = get_irq_desc_chip(desc);
-
-        raw_spin_lock(&desc->lock);
-
-        desc->status &= ~(IRQ_REPLAY | IRQ_WAITING);
-
-        /*
-         * If we're currently running this IRQ, or its disabled,
-         * we shouldn't process the IRQ. Mark it pending, handle
-         * the necessary masking and go out
-         */
-        if (unlikely((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) ||
-                    !desc->action)) {
-                desc->status |= IRQ_PENDING;
-                goto out_eoi;
-        }
-
-        kstat_incr_irqs_this_cpu(irq, desc);
-
-        /* Mark the IRQ currently in progress.*/
-        desc->status |= IRQ_INPROGRESS;
-
-        do {
-                struct irqaction *action = desc->action;
-                irqreturn_t action_ret;
-
-                if (unlikely(!action))
-                        goto out_eoi;
-
-                desc->status &= ~IRQ_PENDING;
-                raw_spin_unlock(&desc->lock);
-                action_ret = handle_IRQ_event(irq, action);
-                if (!noirqdebug)
-                        note_interrupt(irq, desc, action_ret);
-                raw_spin_lock(&desc->lock);
-
-        } while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
-
-        desc->status &= ~IRQ_INPROGRESS;
-out_eoi:
-        chip->irq_eoi(&desc->irq_data);
-        raw_spin_unlock(&desc->lock);
-}
-
 static int iic_host_map(struct irq_host *h, unsigned int virq,
                         irq_hw_number_t hw)
 {
@@ -295,7 +247,7 @@ static int iic_host_map(struct irq_host *h, unsigned int virq,
                                          handle_iic_irq);
                 break;
         default:
-                set_irq_chip_and_handler(virq, &iic_chip, handle_iic_irq);
+                set_irq_chip_and_handler(virq, &iic_chip, handle_edge_eoi_irq);
         }
         return 0;
 }
diff --git a/drivers/vlynq/vlynq.c b/drivers/vlynq/vlynq.c
index f885c868a04d..aa250cebecd2 100644
--- a/drivers/vlynq/vlynq.c
+++ b/drivers/vlynq/vlynq.c
@@ -135,40 +135,40 @@ static void vlynq_reset(struct vlynq_device *dev)
         msleep(5);
 }
 
-static void vlynq_irq_unmask(unsigned int irq)
+static void vlynq_irq_unmask(struct irq_data *d)
 {
-        u32 val;
-        struct vlynq_device *dev = get_irq_chip_data(irq);
+        struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
         int virq;
+        u32 val;
 
         BUG_ON(!dev);
-        virq = irq - dev->irq_start;
+        virq = d->irq - dev->irq_start;
         val = readl(&dev->remote->int_device[virq >> 2]);
         val |= (VINT_ENABLE | virq) << VINT_OFFSET(virq);
         writel(val, &dev->remote->int_device[virq >> 2]);
 }
 
-static void vlynq_irq_mask(unsigned int irq)
+static void vlynq_irq_mask(struct irq_data *d)
 {
-        u32 val;
-        struct vlynq_device *dev = get_irq_chip_data(irq);
+        struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
         int virq;
+        u32 val;
 
         BUG_ON(!dev);
-        virq = irq - dev->irq_start;
+        virq = d->irq - dev->irq_start;
         val = readl(&dev->remote->int_device[virq >> 2]);
         val &= ~(VINT_ENABLE << VINT_OFFSET(virq));
         writel(val, &dev->remote->int_device[virq >> 2]);
 }
 
-static int vlynq_irq_type(unsigned int irq, unsigned int flow_type)
+static int vlynq_irq_type(struct irq_data *d, unsigned int flow_type)
 {
-        u32 val;
-        struct vlynq_device *dev = get_irq_chip_data(irq);
+        struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
         int virq;
+        u32 val;
 
         BUG_ON(!dev);
-        virq = irq - dev->irq_start;
+        virq = d->irq - dev->irq_start;
         val = readl(&dev->remote->int_device[virq >> 2]);
         switch (flow_type & IRQ_TYPE_SENSE_MASK) {
         case IRQ_TYPE_EDGE_RISING:
@@ -192,10 +192,9 @@ static int vlynq_irq_type(unsigned int irq, unsigned int flow_type)
         return 0;
 }
 
-static void vlynq_local_ack(unsigned int irq)
+static void vlynq_local_ack(struct irq_data *d)
 {
-        struct vlynq_device *dev = get_irq_chip_data(irq);
-
+        struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
         u32 status = readl(&dev->local->status);
 
         pr_debug("%s: local status: 0x%08x\n",
@@ -203,10 +202,9 @@ static void vlynq_local_ack(unsigned int irq)
         writel(status, &dev->local->status);
 }
 
-static void vlynq_remote_ack(unsigned int irq)
+static void vlynq_remote_ack(struct irq_data *d)
 {
-        struct vlynq_device *dev = get_irq_chip_data(irq);
-
+        struct vlynq_device *dev = irq_data_get_irq_chip_data(d);
         u32 status = readl(&dev->remote->status);
 
         pr_debug("%s: remote status: 0x%08x\n",
@@ -238,23 +236,23 @@ static irqreturn_t vlynq_irq(int irq, void *dev_id)
 
 static struct irq_chip vlynq_irq_chip = {
         .name = "vlynq",
-        .unmask = vlynq_irq_unmask,
-        .mask = vlynq_irq_mask,
-        .set_type = vlynq_irq_type,
+        .irq_unmask = vlynq_irq_unmask,
+        .irq_mask = vlynq_irq_mask,
+        .irq_set_type = vlynq_irq_type,
 };
 
 static struct irq_chip vlynq_local_chip = {
         .name = "vlynq local error",
-        .unmask = vlynq_irq_unmask,
-        .mask = vlynq_irq_mask,
-        .ack = vlynq_local_ack,
+        .irq_unmask = vlynq_irq_unmask,
+        .irq_mask = vlynq_irq_mask,
+        .irq_ack = vlynq_local_ack,
 };
 
 static struct irq_chip vlynq_remote_chip = {
         .name = "vlynq local error",
-        .unmask = vlynq_irq_unmask,
-        .mask = vlynq_irq_mask,
-        .ack = vlynq_remote_ack,
+        .irq_unmask = vlynq_irq_unmask,
+        .irq_mask = vlynq_irq_mask,
+        .irq_ack = vlynq_remote_ack,
 };
 
 static int vlynq_setup_irq(struct vlynq_device *dev)
@@ -291,17 +289,17 @@ static int vlynq_setup_irq(struct vlynq_device *dev)
         for (i = dev->irq_start; i <= dev->irq_end; i++) {
                 virq = i - dev->irq_start;
                 if (virq == dev->local_irq) {
-                        set_irq_chip_and_handler(i, &vlynq_local_chip,
+                        irq_set_chip_and_handler(i, &vlynq_local_chip,
                                                  handle_level_irq);
-                        set_irq_chip_data(i, dev);
+                        irq_set_chip_data(i, dev);
                 } else if (virq == dev->remote_irq) {
-                        set_irq_chip_and_handler(i, &vlynq_remote_chip,
+                        irq_set_chip_and_handler(i, &vlynq_remote_chip,
                                                  handle_level_irq);
-                        set_irq_chip_data(i, dev);
+                        irq_set_chip_data(i, dev);
                 } else {
-                        set_irq_chip_and_handler(i, &vlynq_irq_chip,
+                        irq_set_chip_and_handler(i, &vlynq_irq_chip,
                                                  handle_simple_irq);
-                        set_irq_chip_data(i, dev);
+                        irq_set_chip_data(i, dev);
                         writel(0, &dev->remote->int_device[virq >> 2]);
                 }
         }
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 5d876c9b3a3d..b3741c83774c 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -135,7 +135,7 @@ struct msi_desc;
  * struct irq_data - per irq and irq chip data passed down to chip functions
  * @irq:                interrupt number
  * @node:               node index useful for balancing
- * @state_use_accessor: status information for irq chip functions.
+ * @state_use_accessors: status information for irq chip functions.
  *                      Use accessor functions to deal with it
  * @chip:               low level interrupt hardware access
  * @handler_data:       per-IRQ data for the irq_chip methods
@@ -174,6 +174,9 @@ struct irq_data {
  *                                from suspend
  * IRDQ_MOVE_PCNTXT             - Interrupt can be moved in process
  *                                context
+ * IRQD_IRQ_DISABLED            - Disabled state of the interrupt
+ * IRQD_IRQ_MASKED              - Masked state of the interrupt
+ * IRQD_IRQ_INPROGRESS          - In progress state of the interrupt
  */
 enum {
         IRQD_TRIGGER_MASK               = 0xf,
@@ -184,6 +187,9 @@ enum {
         IRQD_LEVEL                      = (1 << 13),
         IRQD_WAKEUP_STATE               = (1 << 14),
         IRQD_MOVE_PCNTXT                = (1 << 15),
+        IRQD_IRQ_DISABLED               = (1 << 16),
+        IRQD_IRQ_MASKED                 = (1 << 17),
+        IRQD_IRQ_INPROGRESS             = (1 << 18),
 };
 
 static inline bool irqd_is_setaffinity_pending(struct irq_data *d)
@@ -206,6 +212,11 @@ static inline bool irqd_affinity_was_set(struct irq_data *d)
         return d->state_use_accessors & IRQD_AFFINITY_SET;
 }
 
+static inline void irqd_mark_affinity_was_set(struct irq_data *d)
+{
+        d->state_use_accessors |= IRQD_AFFINITY_SET;
+}
+
 static inline u32 irqd_get_trigger_type(struct irq_data *d)
 {
         return d->state_use_accessors & IRQD_TRIGGER_MASK;
@@ -235,6 +246,36 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d)
         return d->state_use_accessors & IRQD_MOVE_PCNTXT;
 }
 
+static inline bool irqd_irq_disabled(struct irq_data *d)
+{
+        return d->state_use_accessors & IRQD_IRQ_DISABLED;
+}
+
+static inline bool irqd_irq_masked(struct irq_data *d)
+{
+        return d->state_use_accessors & IRQD_IRQ_MASKED;
+}
+
+static inline bool irqd_irq_inprogress(struct irq_data *d)
+{
+        return d->state_use_accessors & IRQD_IRQ_INPROGRESS;
+}
+
+/*
+ * Functions for chained handlers which can be enabled/disabled by the
+ * standard disable_irq/enable_irq calls. Must be called with
+ * irq_desc->lock held.
+ */
+static inline void irqd_set_chained_irq_inprogress(struct irq_data *d)
+{
+        d->state_use_accessors |= IRQD_IRQ_INPROGRESS;
+}
+
+static inline void irqd_clr_chained_irq_inprogress(struct irq_data *d)
+{
+        d->state_use_accessors &= ~IRQD_IRQ_INPROGRESS;
+}
+
 /**
  * struct irq_chip - hardware interrupt chip descriptor
  *
@@ -271,6 +312,8 @@ static inline bool irqd_can_move_in_process_context(struct irq_data *d)
  * @irq_set_wake:       enable/disable power-management wake-on of an IRQ
  * @irq_bus_lock:       function to lock access to slow bus (i2c) chips
  * @irq_bus_sync_unlock:function to sync and unlock slow bus (i2c) chips
+ * @irq_cpu_online:     configure an interrupt source for a secondary CPU
+ * @irq_cpu_offline:    un-configure an interrupt source for a secondary CPU
  * @irq_print_chip:     optional to print special chip info in show_interrupts
  * @flags:              chip specific flags
  *
@@ -319,6 +362,9 @@ struct irq_chip {
         void            (*irq_bus_lock)(struct irq_data *data);
         void            (*irq_bus_sync_unlock)(struct irq_data *data);
 
+        void            (*irq_cpu_online)(struct irq_data *data);
+        void            (*irq_cpu_offline)(struct irq_data *data);
+
         void            (*irq_print_chip)(struct irq_data *data, struct seq_file *p);
 
         unsigned long   flags;
@@ -335,11 +381,14 @@ struct irq_chip {
  * IRQCHIP_SET_TYPE_MASKED:     Mask before calling chip.irq_set_type()
  * IRQCHIP_EOI_IF_HANDLED:      Only issue irq_eoi() when irq was handled
  * IRQCHIP_MASK_ON_SUSPEND:     Mask non wake irqs in the suspend path
+ * IRQCHIP_ONOFFLINE_ENABLED:   Only call irq_on/off_line callbacks
+ *                              when irq enabled
  */
 enum {
         IRQCHIP_SET_TYPE_MASKED         = (1 <<  0),
         IRQCHIP_EOI_IF_HANDLED          = (1 <<  1),
         IRQCHIP_MASK_ON_SUSPEND         = (1 <<  2),
+        IRQCHIP_ONOFFLINE_ENABLED       = (1 <<  3),
 };
 
 /* This include will go away once we isolated irq_desc usage to core code */
@@ -364,6 +413,10 @@ struct irqaction;
 extern int setup_irq(unsigned int irq, struct irqaction *new);
 extern void remove_irq(unsigned int irq, struct irqaction *act);
 
+extern void irq_cpu_online(void);
+extern void irq_cpu_offline(void);
+extern int __irq_set_affinity_locked(struct irq_data *data,  const struct cpumask *cpumask);
+
 #ifdef CONFIG_GENERIC_HARDIRQS
 
 #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
@@ -380,9 +433,6 @@ static inline void irq_move_masked_irq(struct irq_data *data) { }
 
 extern int no_irq_affinity;
 
-/* Handle irq action chains: */
-extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
-
 /*
  * Built-in IRQ handlers for various IRQ types,
  * callable via desc->handle_irq()
@@ -390,6 +440,7 @@ extern irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action);
 extern void handle_level_irq(unsigned int irq, struct irq_desc *desc);
 extern void handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc);
 extern void handle_edge_irq(unsigned int irq, struct irq_desc *desc);
+extern void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc);
 extern void handle_simple_irq(unsigned int irq, struct irq_desc *desc);
 extern void handle_percpu_irq(unsigned int irq, struct irq_desc *desc);
 extern void handle_bad_irq(unsigned int irq, struct irq_desc *desc);
diff --git a/kernel/irq/Kconfig b/kernel/irq/Kconfig
index 00f2c037267a..72606ba10b14 100644
--- a/kernel/irq/Kconfig
+++ b/kernel/irq/Kconfig
@@ -51,6 +51,10 @@ config HARDIRQS_SW_RESEND
 config IRQ_PREFLOW_FASTEOI
        bool
 
+# Edge style eoi based handler (cell)
+config IRQ_EDGE_EOI_HANDLER
+       bool
+
 # Support forced irq threading
 config IRQ_FORCED_THREADING
        bool
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index c9c0601f0615..03099d521f5e 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -37,6 +37,12 @@ int irq_set_chip(unsigned int irq, struct irq_chip *chip)
         irq_chip_set_defaults(chip);
         desc->irq_data.chip = chip;
         irq_put_desc_unlock(desc, flags);
+        /*
+         * For !CONFIG_SPARSE_IRQ make the irq show up in
+         * allocated_irqs. For the CONFIG_SPARSE_IRQ case, it is
+         * already marked, and this call is harmless.
+         */
+        irq_reserve_irq(irq);
         return 0;
 }
 EXPORT_SYMBOL(irq_set_chip);
@@ -134,25 +140,25 @@ EXPORT_SYMBOL_GPL(irq_get_irq_data);
 
 static void irq_state_clr_disabled(struct irq_desc *desc)
 {
-        desc->istate &= ~IRQS_DISABLED;
+        irqd_clear(&desc->irq_data, IRQD_IRQ_DISABLED);
         irq_compat_clr_disabled(desc);
 }
 
 static void irq_state_set_disabled(struct irq_desc *desc)
 {
-        desc->istate |= IRQS_DISABLED;
+        irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
         irq_compat_set_disabled(desc);
 }
 
 static void irq_state_clr_masked(struct irq_desc *desc)
 {
-        desc->istate &= ~IRQS_MASKED;
+        irqd_clear(&desc->irq_data, IRQD_IRQ_MASKED);
         irq_compat_clr_masked(desc);
 }
 
 static void irq_state_set_masked(struct irq_desc *desc)
 {
-        desc->istate |= IRQS_MASKED;
+        irqd_set(&desc->irq_data, IRQD_IRQ_MASKED);
         irq_compat_set_masked(desc);
 }
 
@@ -372,11 +378,11 @@ void handle_nested_irq(unsigned int irq)
         kstat_incr_irqs_this_cpu(irq, desc);
 
         action = desc->action;
-        if (unlikely(!action || (desc->istate & IRQS_DISABLED)))
+        if (unlikely(!action || irqd_irq_disabled(&desc->irq_data)))
                 goto out_unlock;
 
         irq_compat_set_progress(desc);
-        desc->istate |= IRQS_INPROGRESS;
+        irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
         raw_spin_unlock_irq(&desc->lock);
 
         action_ret = action->thread_fn(action->irq, action->dev_id);
@@ -384,7 +390,7 @@ void handle_nested_irq(unsigned int irq)
                 note_interrupt(irq, desc, action_ret);
 
         raw_spin_lock_irq(&desc->lock);
-        desc->istate &= ~IRQS_INPROGRESS;
+        irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
         irq_compat_clr_progress(desc);
 
 out_unlock:
@@ -416,14 +422,14 @@ handle_simple_irq(unsigned int irq, struct irq_desc *desc)
 {
         raw_spin_lock(&desc->lock);
 
-        if (unlikely(desc->istate & IRQS_INPROGRESS))
+        if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
                 if (!irq_check_poll(desc))
                         goto out_unlock;
 
         desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
         kstat_incr_irqs_this_cpu(irq, desc);
 
-        if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
+        if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data)))
                 goto out_unlock;
 
         handle_irq_event(desc);
@@ -448,7 +454,7 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
         raw_spin_lock(&desc->lock);
         mask_ack_irq(desc);
 
-        if (unlikely(desc->istate & IRQS_INPROGRESS))
+        if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
                 if (!irq_check_poll(desc))
                         goto out_unlock;
 
@@ -459,12 +465,12 @@ handle_level_irq(unsigned int irq, struct irq_desc *desc)
          * If its disabled or no action available
          * keep it masked and get out of here
          */
-        if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED)))
+        if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data)))
                 goto out_unlock;
 
         handle_irq_event(desc);
 
-        if (!(desc->istate & (IRQS_DISABLED | IRQS_ONESHOT)))
+        if (!irqd_irq_disabled(&desc->irq_data) && !(desc->istate & IRQS_ONESHOT))
                 unmask_irq(desc);
 out_unlock:
         raw_spin_unlock(&desc->lock);
@@ -496,7 +502,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
 {
         raw_spin_lock(&desc->lock);
 
-        if (unlikely(desc->istate & IRQS_INPROGRESS))
+        if (unlikely(irqd_irq_inprogress(&desc->irq_data)))
                 if (!irq_check_poll(desc))
                         goto out;
 
@@ -507,7 +513,7 @@ handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc)
          * If its disabled or no action available
          * then mask it and get out of here:
          */
-        if (unlikely(!desc->action || (desc->istate & IRQS_DISABLED))) {
+        if (unlikely(!desc->action || irqd_irq_disabled(&desc->irq_data))) {
                 irq_compat_set_pending(desc);
                 desc->istate |= IRQS_PENDING;
                 mask_irq(desc);
@@ -558,8 +564,8 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
          * we shouldn't process the IRQ. Mark it pending, handle
          * the necessary masking and go out
          */
-        if (unlikely((desc->istate & (IRQS_DISABLED | IRQS_INPROGRESS) ||
-                      !desc->action))) {
+        if (unlikely(irqd_irq_disabled(&desc->irq_data) ||
+                     irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {
                 if (!irq_check_poll(desc)) {
                         irq_compat_set_pending(desc);
                         desc->istate |= IRQS_PENDING;
@@ -584,20 +590,65 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
                  * Renable it, if it was not disabled in meantime.
                  */
                 if (unlikely(desc->istate & IRQS_PENDING)) {
-                        if (!(desc->istate & IRQS_DISABLED) &&
-                            (desc->istate & IRQS_MASKED))
+                        if (!irqd_irq_disabled(&desc->irq_data) &&
+                            irqd_irq_masked(&desc->irq_data))
                                 unmask_irq(desc);
                 }
 
                 handle_irq_event(desc);
 
         } while ((desc->istate & IRQS_PENDING) &&
-                 !(desc->istate & IRQS_DISABLED));
+                 !irqd_irq_disabled(&desc->irq_data));
 
 out_unlock:
         raw_spin_unlock(&desc->lock);
 }
 
+#ifdef CONFIG_IRQ_EDGE_EOI_HANDLER
+/**
+ *      handle_edge_eoi_irq - edge eoi type IRQ handler
+ *      @irq:   the interrupt number
+ *      @desc:  the interrupt description structure for this irq
+ *
+ * Similar as the above handle_edge_irq, but using eoi and w/o the
+ * mask/unmask logic.
+ */
+void handle_edge_eoi_irq(unsigned int irq, struct irq_desc *desc)
+{
+        struct irq_chip *chip = irq_desc_get_chip(desc);
+
+        raw_spin_lock(&desc->lock);
+
+        desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING);
+        /*
+         * If we're currently running this IRQ, or its disabled,
+         * we shouldn't process the IRQ. Mark it pending, handle
+         * the necessary masking and go out
+         */
+        if (unlikely(irqd_irq_disabled(&desc->irq_data) ||
+                     irqd_irq_inprogress(&desc->irq_data) || !desc->action)) {
+                if (!irq_check_poll(desc)) {
+                        desc->istate |= IRQS_PENDING;
+                        goto out_eoi;
+                }
+        }
+        kstat_incr_irqs_this_cpu(irq, desc);
+
+        do {
+                if (unlikely(!desc->action))
+                        goto out_eoi;
+
+                handle_irq_event(desc);
+
+        } while ((desc->istate & IRQS_PENDING) &&
+                 !irqd_irq_disabled(&desc->irq_data));
+
+out_unlock:
+        chip->irq_eoi(&desc->irq_data);
+        raw_spin_unlock(&desc->lock);
+}
+#endif
+
 /**
  *      handle_percpu_irq - Per CPU local irq handler
  *      @irq:   the interrupt number
@@ -642,8 +693,7 @@ __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
         if (handle == handle_bad_irq) {
                 if (desc->irq_data.chip != &no_irq_chip)
                         mask_ack_irq(desc);
-                irq_compat_set_disabled(desc);
-                desc->istate |= IRQS_DISABLED;
+                irq_state_set_disabled(desc);
                 desc->depth = 1;
         }
         desc->handle_irq = handle;
@@ -684,8 +734,70 @@ void irq_modify_status(unsigned int irq, unsigned long clr, unsigned long set)
                 irqd_set(&desc->irq_data, IRQD_PER_CPU);
         if (irq_settings_can_move_pcntxt(desc))
                 irqd_set(&desc->irq_data, IRQD_MOVE_PCNTXT);
+        if (irq_settings_is_level(desc))
+                irqd_set(&desc->irq_data, IRQD_LEVEL);
 
         irqd_set(&desc->irq_data, irq_settings_get_trigger_mask(desc));
 
         irq_put_desc_unlock(desc, flags);
 }
+
+/**
+ *      irq_cpu_online - Invoke all irq_cpu_online functions.
+ *
+ *      Iterate through all irqs and invoke the chip.irq_cpu_online()
+ *      for each.
+ */
+void irq_cpu_online(void)
+{
+        struct irq_desc *desc;
+        struct irq_chip *chip;
+        unsigned long flags;
+        unsigned int irq;
+
+        for_each_active_irq(irq) {
+                desc = irq_to_desc(irq);
+                if (!desc)
+                        continue;
+
+                raw_spin_lock_irqsave(&desc->lock, flags);
+
+                chip = irq_data_get_irq_chip(&desc->irq_data);
+                if (chip && chip->irq_cpu_online &&
+                    (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
+                     !irqd_irq_disabled(&desc->irq_data)))
+                        chip->irq_cpu_online(&desc->irq_data);
+
+                raw_spin_unlock_irqrestore(&desc->lock, flags);
+        }
+}
+
+/**
+ *      irq_cpu_offline - Invoke all irq_cpu_offline functions.
+ *
+ *      Iterate through all irqs and invoke the chip.irq_cpu_offline()
+ *      for each.
+ */
+void irq_cpu_offline(void)
+{
+        struct irq_desc *desc;
+        struct irq_chip *chip;
+        unsigned long flags;
+        unsigned int irq;
+
+        for_each_active_irq(irq) {
+                desc = irq_to_desc(irq);
+                if (!desc)
+                        continue;
+
+                raw_spin_lock_irqsave(&desc->lock, flags);
+
+                chip = irq_data_get_irq_chip(&desc->irq_data);
+                if (chip && chip->irq_cpu_offline &&
+                    (!(chip->flags & IRQCHIP_ONOFFLINE_ENABLED) ||
+                     !irqd_irq_disabled(&desc->irq_data)))
+                        chip->irq_cpu_offline(&desc->irq_data);
+
+                raw_spin_unlock_irqrestore(&desc->lock, flags);
+        }
+}
diff --git a/kernel/irq/debug.h b/kernel/irq/debug.h
index d1a33b7fa61d..a0bd875ba3d5 100644
--- a/kernel/irq/debug.h
+++ b/kernel/irq/debug.h
@@ -6,6 +6,8 @@
 
 #define P(f) if (desc->status & f) printk("%14s set\n", #f)
 #define PS(f) if (desc->istate & f) printk("%14s set\n", #f)
+/* FIXME */
+#define PD(f) do { } while (0)
 
 static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
 {
@@ -28,13 +30,15 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc)
         P(IRQ_NOAUTOEN);
 
         PS(IRQS_AUTODETECT);
-        PS(IRQS_INPROGRESS);
         PS(IRQS_REPLAY);
         PS(IRQS_WAITING);
-        PS(IRQS_DISABLED);
         PS(IRQS_PENDING);
-        PS(IRQS_MASKED);
+
+        PD(IRQS_INPROGRESS);
+        PD(IRQS_DISABLED);
+        PD(IRQS_MASKED);
 }
 
 #undef P
 #undef PS
+#undef PD
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index 517561fc7317..1a2fb77f2fd6 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -178,25 +178,13 @@ irqreturn_t handle_irq_event(struct irq_desc *desc)
         irq_compat_clr_pending(desc);
         desc->istate &= ~IRQS_PENDING;
         irq_compat_set_progress(desc);
-        desc->istate |= IRQS_INPROGRESS;
+        irqd_set(&desc->irq_data, IRQD_IRQ_INPROGRESS);
         raw_spin_unlock(&desc->lock);
 
         ret = handle_irq_event_percpu(desc, action);
 
         raw_spin_lock(&desc->lock);
-        desc->istate &= ~IRQS_INPROGRESS;
+        irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
         irq_compat_clr_progress(desc);
         return ret;
 }
-
-/**
- * handle_IRQ_event - irq action chain handler
- * @irq:        the interrupt number
- * @action:     the interrupt action chain for this irq
- *
- * Handles the action chain of an irq event
- */
-irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
-{
-        return handle_irq_event_percpu(irq_to_desc(irq), action);
-}
diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h
index 6c6ec9a49027..6b8b9713e28d 100644
--- a/kernel/irq/internals.h
+++ b/kernel/irq/internals.h
@@ -44,26 +44,20 @@ enum {
  * IRQS_SPURIOUS_DISABLED       - was disabled due to spurious interrupt
  *                                detection
  * IRQS_POLL_INPROGRESS         - polling in progress
- * IRQS_INPROGRESS              - Interrupt in progress
  * IRQS_ONESHOT                 - irq is not unmasked in primary handler
  * IRQS_REPLAY                  - irq is replayed
  * IRQS_WAITING                 - irq is waiting
- * IRQS_DISABLED                - irq is disabled
  * IRQS_PENDING                 - irq is pending and replayed later
- * IRQS_MASKED                  - irq is masked
  * IRQS_SUSPENDED               - irq is suspended
  */
 enum {
         IRQS_AUTODETECT         = 0x00000001,
         IRQS_SPURIOUS_DISABLED  = 0x00000002,
         IRQS_POLL_INPROGRESS    = 0x00000008,
-        IRQS_INPROGRESS         = 0x00000010,
         IRQS_ONESHOT            = 0x00000020,
         IRQS_REPLAY             = 0x00000040,
         IRQS_WAITING            = 0x00000080,
-        IRQS_DISABLED           = 0x00000100,
         IRQS_PENDING            = 0x00000200,
-        IRQS_MASKED             = 0x00000400,
         IRQS_SUSPENDED          = 0x00000800,
 };
 
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 6fb014f172f7..2c039c9b9383 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -80,7 +80,7 @@ static void desc_set_defaults(unsigned int irq, struct irq_desc *desc, int node)
         desc->irq_data.handler_data = NULL;
         desc->irq_data.msi_desc = NULL;
         irq_settings_clr_and_set(desc, ~0, _IRQ_DEFAULT_INIT_FLAGS);
-        desc->istate = IRQS_DISABLED;
+        irqd_set(&desc->irq_data, IRQD_IRQ_DISABLED);
         desc->handle_irq = handle_bad_irq;
         desc->depth = 1;
         desc->irq_count = 0;
@@ -238,7 +238,6 @@ int __init early_irq_init(void)
 
 struct irq_desc irq_desc[NR_IRQS] __cacheline_aligned_in_smp = {
         [0 ... NR_IRQS-1] = {
-                .istate         = IRQS_DISABLED,
                 .handle_irq     = handle_bad_irq,
                 .depth          = 1,
                 .lock           = __RAW_SPIN_LOCK_UNLOCKED(irq_desc->lock),
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0a2aa73e536c..acf540768b8f 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -41,7 +41,7 @@ early_param("threadirqs", setup_forced_irqthreads);
 void synchronize_irq(unsigned int irq)
 {
         struct irq_desc *desc = irq_to_desc(irq);
-        unsigned int state;
+        bool inprogress;
 
         if (!desc)
                 return;
@@ -53,16 +53,16 @@ void synchronize_irq(unsigned int irq)
                  * Wait until we're out of the critical section.  This might
                  * give the wrong answer due to the lack of memory barriers.
                  */
-                while (desc->istate & IRQS_INPROGRESS)
+                while (irqd_irq_inprogress(&desc->irq_data))
                         cpu_relax();
 
                 /* Ok, that indicated we're done: double-check carefully. */
                 raw_spin_lock_irqsave(&desc->lock, flags);
-                state = desc->istate;
+                inprogress = irqd_irq_inprogress(&desc->irq_data);
                 raw_spin_unlock_irqrestore(&desc->lock, flags);
 
                 /* Oops, that failed? */
-        } while (state & IRQS_INPROGRESS);
+        } while (inprogress);
 
         /*
          * We made sure that no hardirq handler is running. Now verify
@@ -112,13 +112,13 @@ void irq_set_thread_affinity(struct irq_desc *desc)
 }
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
-static inline bool irq_can_move_pcntxt(struct irq_desc *desc)
+static inline bool irq_can_move_pcntxt(struct irq_data *data)
 {
-        return irq_settings_can_move_pcntxt(desc);
+        return irqd_can_move_in_process_context(data);
 }
-static inline bool irq_move_pending(struct irq_desc *desc)
+static inline bool irq_move_pending(struct irq_data *data)
 {
-        return irqd_is_setaffinity_pending(&desc->irq_data);
+        return irqd_is_setaffinity_pending(data);
 }
 static inline void
 irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask)
@@ -131,43 +131,34 @@ irq_get_pending(struct cpumask *mask, struct irq_desc *desc)
         cpumask_copy(mask, desc->pending_mask);
 }
 #else
-static inline bool irq_can_move_pcntxt(struct irq_desc *desc) { return true; }
-static inline bool irq_move_pending(struct irq_desc *desc) { return false; }
+static inline bool irq_can_move_pcntxt(struct irq_data *data) { return true; }
+static inline bool irq_move_pending(struct irq_desc *data) { return false; }
 static inline void
 irq_copy_pending(struct irq_desc *desc, const struct cpumask *mask) { }
 static inline void
 irq_get_pending(struct cpumask *mask, struct irq_desc *desc) { }
 #endif
 
-/**
- *      irq_set_affinity - Set the irq affinity of a given irq
- *      @irq:           Interrupt to set affinity
- *      @cpumask:       cpumask
- *
- */
-int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
+int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *mask)
 {
-        struct irq_desc *desc = irq_to_desc(irq);
-        struct irq_chip *chip = desc->irq_data.chip;
-        unsigned long flags;
+        struct irq_chip *chip = irq_data_get_irq_chip(data);
+        struct irq_desc *desc = irq_data_to_desc(data);
         int ret = 0;
 
-        if (!chip->irq_set_affinity)
+        if (!chip || !chip->irq_set_affinity)
                 return -EINVAL;
 
-        raw_spin_lock_irqsave(&desc->lock, flags);
-
-        if (irq_can_move_pcntxt(desc)) {
-                ret = chip->irq_set_affinity(&desc->irq_data, mask, false);
+        if (irq_can_move_pcntxt(data)) {
+                ret = chip->irq_set_affinity(data, mask, false);
                 switch (ret) {
                 case IRQ_SET_MASK_OK:
-                        cpumask_copy(desc->irq_data.affinity, mask);
+                        cpumask_copy(data->affinity, mask);
                 case IRQ_SET_MASK_OK_NOCOPY:
                         irq_set_thread_affinity(desc);
                         ret = 0;
                 }
         } else {
-                irqd_set_move_pending(&desc->irq_data);
+                irqd_set_move_pending(data);
                 irq_copy_pending(desc, mask);
         }
 
@@ -176,7 +167,28 @@ int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
                 schedule_work(&desc->affinity_notify->work);
         }
         irq_compat_set_affinity(desc);
-        irqd_set(&desc->irq_data, IRQD_AFFINITY_SET);
+        irqd_set(data, IRQD_AFFINITY_SET);
+
+        return ret;
+}
+
+/**
+ *      irq_set_affinity - Set the irq affinity of a given irq
+ *      @irq:           Interrupt to set affinity
+ *      @mask:          cpumask
+ *
+ */
+int irq_set_affinity(unsigned int irq, const struct cpumask *mask)
+{
+        struct irq_desc *desc = irq_to_desc(irq);
+        unsigned long flags;
+        int ret;
+
+        if (!desc)
+                return -EINVAL;
+
+        raw_spin_lock_irqsave(&desc->lock, flags);
+        ret =  __irq_set_affinity_locked(irq_desc_get_irq_data(desc), mask);
         raw_spin_unlock_irqrestore(&desc->lock, flags);
         return ret;
 }
@@ -206,7 +218,7 @@ static void irq_affinity_notify(struct work_struct *work)
                 goto out;
 
         raw_spin_lock_irqsave(&desc->lock, flags);
-        if (irq_move_pending(desc))
+        if (irq_move_pending(&desc->irq_data))
                 irq_get_pending(cpumask, desc);
         else
                 cpumask_copy(cpumask, desc->irq_data.affinity);
@@ -551,9 +563,9 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned int irq,
         flags &= IRQ_TYPE_SENSE_MASK;
 
         if (chip->flags & IRQCHIP_SET_TYPE_MASKED) {
-                if (!(desc->istate & IRQS_MASKED))
+                if (!irqd_irq_masked(&desc->irq_data))
                         mask_irq(desc);
-                if (!(desc->istate & IRQS_DISABLED))
+                if (!irqd_irq_disabled(&desc->irq_data))
                         unmask = 1;
         }
 
@@ -651,7 +663,7 @@ again:
          * irq_wake_thread(). See the comment there which explains the
          * serialization.
          */
-        if (unlikely(desc->istate & IRQS_INPROGRESS)) {
+        if (unlikely(irqd_irq_inprogress(&desc->irq_data))) {
                 raw_spin_unlock_irq(&desc->lock);
                 chip_bus_sync_unlock(desc);
                 cpu_relax();
@@ -668,12 +680,10 @@ again:
 
         desc->threads_oneshot &= ~action->thread_mask;
 
-        if (!desc->threads_oneshot && !(desc->istate & IRQS_DISABLED) &&
-            (desc->istate & IRQS_MASKED)) {
-                irq_compat_clr_masked(desc);
-                desc->istate &= ~IRQS_MASKED;
-                desc->irq_data.chip->irq_unmask(&desc->irq_data);
-        }
+        if (!desc->threads_oneshot && !irqd_irq_disabled(&desc->irq_data) &&
+            irqd_irq_masked(&desc->irq_data))
+                unmask_irq(desc);
+
 out_unlock:
         raw_spin_unlock_irq(&desc->lock);
         chip_bus_sync_unlock(desc);
@@ -767,7 +777,7 @@ static int irq_thread(void *data)
                 atomic_inc(&desc->threads_active);
 
                 raw_spin_lock_irq(&desc->lock);
-                if (unlikely(desc->istate & IRQS_DISABLED)) {
+                if (unlikely(irqd_irq_disabled(&desc->irq_data))) {
                         /*
                          * CHECKME: We might need a dedicated
                          * IRQ_THREAD_PENDING flag here, which
@@ -985,8 +995,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
                 }
 
                 desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \
-                                  IRQS_INPROGRESS | IRQS_ONESHOT | \
-                                  IRQS_WAITING);
+                                  IRQS_ONESHOT | IRQS_WAITING);
+                irqd_clear(&desc->irq_data, IRQD_IRQ_INPROGRESS);
 
                 if (new->flags & IRQF_PERCPU) {
                         irqd_set(&desc->irq_data, IRQD_PER_CPU);
diff --git a/kernel/irq/migration.c b/kernel/irq/migration.c
index ec4806d4778b..e33d9c8d5089 100644
--- a/kernel/irq/migration.c
+++ b/kernel/irq/migration.c
@@ -60,13 +60,12 @@ void move_masked_irq(int irq)
 
 void irq_move_irq(struct irq_data *idata)
 {
-        struct irq_desc *desc = irq_data_to_desc(idata);
         bool masked;
 
         if (likely(!irqd_is_setaffinity_pending(idata)))
                 return;
 
-        if (unlikely(desc->istate & IRQS_DISABLED))
+        if (unlikely(irqd_irq_disabled(idata)))
                 return;
 
         /*
@@ -74,7 +73,7 @@ void irq_move_irq(struct irq_data *idata)
          * threaded interrupt with ONESHOT set, we can end up with an
          * interrupt storm.
          */
-        masked = desc->istate & IRQS_MASKED;
+        masked = irqd_irq_masked(idata);
         if (!masked)
                 idata->chip->irq_mask(idata);
         irq_move_masked_irq(idata);
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index dd586ebf9c8c..83f4799f46be 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -45,12 +45,12 @@ bool irq_wait_for_poll(struct irq_desc *desc)
 #ifdef CONFIG_SMP
         do {
                 raw_spin_unlock(&desc->lock);
-                while (desc->istate & IRQS_INPROGRESS)
+                while (irqd_irq_inprogress(&desc->irq_data))
                         cpu_relax();
                 raw_spin_lock(&desc->lock);
-        } while (desc->istate & IRQS_INPROGRESS);
+        } while (irqd_irq_inprogress(&desc->irq_data));
         /* Might have been disabled in meantime */
-        return !(desc->istate & IRQS_DISABLED) && desc->action;
+        return !irqd_irq_disabled(&desc->irq_data) && desc->action;
 #else
         return false;
 #endif
@@ -75,7 +75,7 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
          * Do not poll disabled interrupts unless the spurious
          * disabled poller asks explicitely.
          */
-        if ((desc->istate & IRQS_DISABLED) && !force)
+        if (irqd_irq_disabled(&desc->irq_data) && !force)
                 goto out;
 
         /*
@@ -88,7 +88,7 @@ static int try_one_irq(int irq, struct irq_desc *desc, bool force)
                 goto out;
 
         /* Already running on another processor */
-        if (desc->istate & IRQS_INPROGRESS) {
+        if (irqd_irq_inprogress(&desc->irq_data)) {
                 /*
                  * Already running: If it is shared get the other
                  * CPU to go looking for our mystery interrupt too