X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=include%2Flinux%2Firq.h;h=1e50c34f0062854ef167130ad349f1385adcb4d2;hp=eedbb8e5e0ccff99c79594b6485fd9259049d088;hb=d90a7e86401ffea2163a4337f3a47f3909c4e255;hpb=48b1fddbb100a64f3983ca9768b8ea629a09aa20

diff --git a/include/linux/irq.h b/include/linux/irq.h
index eedbb8e5e0cc..ae9653dbcd78 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -69,6 +69,8 @@ typedef	void (*irq_flow_handler_t)(unsigned int irq,
 #define IRQ_MOVE_PCNTXT		0x01000000	/* IRQ migration from process context */
 #define IRQ_AFFINITY_SET	0x02000000	/* IRQ affinity was set from userspace*/
 #define IRQ_SUSPENDED		0x04000000	/* IRQ has gone through suspend sequence */
+#define IRQ_ONESHOT		0x08000000	/* IRQ is not unmasked after hardirq */
+#define IRQ_NESTED_THREAD	0x10000000	/* IRQ is nested into another, no own handler thread */
 
 #ifdef CONFIG_IRQ_PER_CPU
 # define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU)
@@ -100,6 +102,9 @@ struct msi_desc;
  * @set_type:		set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
  * @set_wake:		enable/disable power-management wake-on of an IRQ
  *
+ * @bus_lock:		function to lock access to slow bus (i2c) chips
+ * @bus_sync_unlock:	function to sync and unlock slow bus (i2c) chips
+ *
  * @release:		release function solely used by UML
  * @typename:		obsoleted by name, kept as migration helper
  */
@@ -123,6 +128,9 @@ struct irq_chip {
 	int		(*set_type)(unsigned int irq, unsigned int flow_type);
 	int		(*set_wake)(unsigned int irq, unsigned int on);
 
+	void		(*bus_lock)(unsigned int irq);
+	void		(*bus_sync_unlock)(unsigned int irq);
+
 	/* Currently used only by UML, might disappear one day.*/
 #ifdef CONFIG_IRQ_RELEASE_METHOD
 	void		(*release)(unsigned int irq, void *dev_id);
@@ -157,7 +165,7 @@ struct irq_2_iommu;
  * @irqs_unhandled:	stats field for spurious unhandled interrupts
  * @lock:		locking for SMP
  * @affinity:		IRQ affinity on SMP
- * @cpu:		cpu index useful for balancing
+ * @node:		node index useful for balancing
  * @pending_mask:	pending rebalanced interrupts
  * @threads_active:	number of irqaction threads currently running
  * @wait_for_threads:	wait queue for sync_irq to wait for threaded handlers
@@ -219,13 +227,6 @@ static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
 
 extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node);
 
-/*
- * Migration helpers for obsolete names, they will go away:
- */
-#define hw_interrupt_type	irq_chip
-#define no_irq_type		no_irq_chip
-typedef struct irq_desc		irq_desc_t;
-
 /*
  * Pick up the arch-dependent methods:
  */
@@ -289,6 +290,7 @@ extern void handle_edge_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);
+extern void handle_nested_irq(unsigned int irq);
 
 /*
  * Monolithic do_IRQ implementation.
@@ -379,6 +381,8 @@ set_irq_chained_handler(unsigned int irq,
 	__set_irq_handler(irq, handle, 1, NULL);
 }
 
+extern void set_irq_nested_thread(unsigned int irq, int nest);
+
 extern void set_irq_noprobe(unsigned int irq);
 extern void set_irq_probe(unsigned int irq);
 
@@ -423,30 +427,26 @@ extern int set_irq_msi(unsigned int irq, struct msi_desc *entry);
 /**
  * alloc_desc_masks - allocate cpumasks for irq_desc
  * @desc:	pointer to irq_desc struct
- * @cpu:	cpu which will be handling the cpumasks
+ * @node:	node which will be handling the cpumasks
  * @boot:	true if need bootmem
  *
  * Allocates affinity and pending_mask cpumask if required.
  * Returns true if successful (or not required).
  */
 static inline bool alloc_desc_masks(struct irq_desc *desc, int node,
-								bool boot)
+							bool boot)
 {
-#ifdef CONFIG_CPUMASK_OFFSTACK
-	if (boot) {
-		alloc_bootmem_cpumask_var(&desc->affinity);
+	gfp_t gfp = GFP_ATOMIC;
 
-#ifdef CONFIG_GENERIC_PENDING_IRQ
-		alloc_bootmem_cpumask_var(&desc->pending_mask);
-#endif
-		return true;
-	}
+	if (boot)
+		gfp = GFP_NOWAIT;
 
-	if (!alloc_cpumask_var_node(&desc->affinity, GFP_ATOMIC, node))
+#ifdef CONFIG_CPUMASK_OFFSTACK
+	if (!alloc_cpumask_var_node(&desc->affinity, gfp, node))
 		return false;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
-	if (!alloc_cpumask_var_node(&desc->pending_mask, GFP_ATOMIC, node)) {
+	if (!alloc_cpumask_var_node(&desc->pending_mask, gfp, node)) {
 		free_cpumask_var(desc->affinity);
 		return false;
 	}