Merge branch 'cpus4096-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / include / linux / irq.h

diff --git a/include/linux/irq.h b/include/linux/irq.h
index d058c57be02d3508e27382e63980bfb593658649..f899b502f18622dce2c509aac5c656ef8150216f 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -63,7 +63,8 @@ typedef       void (*irq_flow_handler_t)(unsigned int irq,
 #define IRQ_MOVE_PENDING       0x00200000      /* need to re-target IRQ destination */
 #define IRQ_NO_BALANCING       0x00400000      /* IRQ is excluded from balancing */
 #define IRQ_SPURIOUS_DISABLED  0x00800000      /* IRQ was disabled by the spurious trap */
-#define IRQ_MOVE_PCNTXT        0x01000000      /* IRQ migration from process context */
+#define IRQ_MOVE_PCNTXT                0x01000000      /* IRQ migration from process context */
+#define IRQ_AFFINITY_SET       0x02000000      /* IRQ affinity was set from userspace*/
 
 #ifdef CONFIG_IRQ_PER_CPU
 # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)
@@ -112,7 +113,8 @@ struct irq_chip {
        void            (*eoi)(unsigned int irq);
 
        void            (*end)(unsigned int irq);
-       void            (*set_affinity)(unsigned int irq, cpumask_t dest);
+       void            (*set_affinity)(unsigned int irq,
+                                       const struct cpumask *dest);
        int             (*retrigger)(unsigned int irq);
        int             (*set_type)(unsigned int irq, unsigned int flow_type);
        int             (*set_wake)(unsigned int irq, unsigned int on);
@@ -128,9 +130,14 @@ struct irq_chip {
        const char      *typename;
 };
 
+struct timer_rand_state;
+struct irq_2_iommu;
 /**
  * struct irq_desc - interrupt descriptor
- *
+ * @irq:               interrupt number for this descriptor
+ * @timer_rand_state:  pointer to timer rand state struct
+ * @kstat_irqs:                irq stats per cpu
+ * @irq_2_iommu:       iommu with this irq
  * @handle_irq:                highlevel irq-events handler [if NULL, __do_IRQ()]
  * @chip:              low level interrupt hardware access
  * @msi_desc:          MSI descriptor
@@ -142,18 +149,24 @@ struct irq_chip {
  * @depth:             disable-depth, for nested irq_disable() calls
  * @wake_depth:                enable depth, for multiple set_irq_wake() callers
  * @irq_count:         stats field to detect stalled irqs
- * @irqs_unhandled:    stats field for spurious unhandled interrupts
  * @last_unhandled:    aging timer for unhandled count
+ * @irqs_unhandled:    stats field for spurious unhandled interrupts
  * @lock:              locking for SMP
  * @affinity:          IRQ affinity on SMP
  * @cpu:               cpu index useful for balancing
  * @pending_mask:      pending rebalanced interrupts
  * @dir:               /proc/irq/ procfs entry
- * @affinity_entry:    /proc/irq/smp_affinity procfs entry on SMP
  * @name:              flow handler name for /proc/interrupts output
  */
 struct irq_desc {
        unsigned int            irq;
+#ifdef CONFIG_SPARSE_IRQ
+       struct timer_rand_state *timer_rand_state;
+       unsigned int            *kstat_irqs;
+# ifdef CONFIG_INTR_REMAP
+       struct irq_2_iommu      *irq_2_iommu;
+# endif
+#endif
        irq_flow_handler_t      handle_irq;
        struct irq_chip         *chip;
        struct msi_desc         *msi_desc;
@@ -165,8 +178,8 @@ struct irq_desc {
        unsigned int            depth;          /* nested irq disables */
        unsigned int            wake_depth;     /* nested wake enables */
        unsigned int            irq_count;      /* For detecting broken IRQs */
-       unsigned int            irqs_unhandled;
        unsigned long           last_unhandled; /* Aging timer for unhandled count */
+       unsigned int            irqs_unhandled;
        spinlock_t              lock;
 #ifdef CONFIG_SMP
        cpumask_t               affinity;
@@ -181,12 +194,32 @@ struct irq_desc {
        const char              *name;
 } ____cacheline_internodealigned_in_smp;
 
+extern void arch_init_copy_chip_data(struct irq_desc *old_desc,
+                                       struct irq_desc *desc, int cpu);
+extern void arch_free_chip_data(struct irq_desc *old_desc, struct irq_desc *desc);
 
+#ifndef CONFIG_SPARSE_IRQ
 extern struct irq_desc irq_desc[NR_IRQS];
+#else /* CONFIG_SPARSE_IRQ */
+extern struct irq_desc *move_irq_desc(struct irq_desc *old_desc, int cpu);
+
+#define kstat_irqs_this_cpu(DESC) \
+       ((DESC)->kstat_irqs[smp_processor_id()])
+#define kstat_incr_irqs_this_cpu(irqno, DESC) \
+       ((DESC)->kstat_irqs[smp_processor_id()]++)
+
+#endif /* CONFIG_SPARSE_IRQ */
 
-static inline struct irq_desc *irq_to_desc(unsigned int irq)
+extern struct irq_desc *irq_to_desc_alloc_cpu(unsigned int irq, int cpu);
+
+static inline struct irq_desc *
+irq_remap_to_desc(unsigned int irq, struct irq_desc *desc)
 {
-       return (irq < nr_irqs) ? irq_desc + irq : NULL;
+#ifdef CONFIG_NUMA_MIGRATE_IRQ_DESC
+       return irq_to_desc(irq);
+#else
+       return desc;
+#endif
 }
 
 /*
@@ -210,7 +243,6 @@ extern int setup_irq(unsigned int irq, struct irqaction *new);
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 
-void set_pending_irq(unsigned int irq, cpumask_t mask);
 void move_native_irq(int irq);
 void move_masked_irq(int irq);
 
@@ -228,10 +260,6 @@ static inline void move_masked_irq(int irq)
 {
 }
 
-static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
-{
-}
-
 #endif /* CONFIG_GENERIC_PENDING_IRQ */
 
 #else /* CONFIG_SMP */
@@ -385,6 +413,11 @@ extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
 #define get_irq_data(irq)      (irq_to_desc(irq)->handler_data)
 #define get_irq_msi(irq)       (irq_to_desc(irq)->msi_desc)
 
+#define get_irq_desc_chip(desc)                ((desc)->chip)
+#define get_irq_desc_chip_data(desc)   ((desc)->chip_data)
+#define get_irq_desc_data(desc)                ((desc)->handler_data)
+#define get_irq_desc_msi(desc)         ((desc)->msi_desc)
+
 #endif /* CONFIG_GENERIC_HARDIRQS */
 
 #endif /* !CONFIG_S390 */