X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=arch%2Fpowerpc%2Fplatforms%2Fcell%2Finterrupt.c;h=2d5bb22d6c092419cd4582bdbdd8f364135db833;hp=151fd8b82d63b2e0878a7ee48118b3cda0ca0576;hb=9063974cdbc5463528cb6aa60c91bc0267af7bbb;hpb=4fa435018d740cb83d74c92306aa1f796da91ddd

diff --git a/arch/powerpc/platforms/cell/interrupt.c b/arch/powerpc/platforms/cell/interrupt.c
index 151fd8b82d63..2d5bb22d6c09 100644
--- a/arch/powerpc/platforms/cell/interrupt.c
+++ b/arch/powerpc/platforms/cell/interrupt.c
@@ -35,6 +35,7 @@
 #include <linux/percpu.h>
 #include <linux/types.h>
 #include <linux/ioport.h>
+#include <linux/kernel_stat.h>
 
 #include <asm/io.h>
 #include <asm/pgtable.h>
@@ -158,6 +159,18 @@ static unsigned int iic_get_irq(void)
 	return virq;
 }
 
+void iic_setup_cpu(void)
+{
+	out_be64(&__get_cpu_var(iic).regs->prio, 0xff);
+}
+
+u8 iic_get_target_id(int cpu)
+{
+	return per_cpu(iic, cpu).target_id;
+}
+
+EXPORT_SYMBOL_GPL(iic_get_target_id);
+
 #ifdef CONFIG_SMP
 
 /* Use the highest interrupt priorities for IPI */
@@ -166,29 +179,17 @@ static inline int iic_ipi_to_irq(int ipi)
 	return IIC_IRQ_TYPE_IPI + 0xf - ipi;
 }
 
-void iic_setup_cpu(void)
-{
-	out_be64(&__get_cpu_var(iic).regs->prio, 0xff);
-}
-
 void iic_cause_IPI(int cpu, int mesg)
 {
 	out_be64(&per_cpu(iic, cpu).regs->generate, (0xf - mesg) << 4);
 }
 
-u8 iic_get_target_id(int cpu)
-{
-	return per_cpu(iic, cpu).target_id;
-}
-EXPORT_SYMBOL_GPL(iic_get_target_id);
-
 struct irq_host *iic_get_irq_host(int node)
 {
 	return iic_host;
 }
 EXPORT_SYMBOL_GPL(iic_get_irq_host);
 
-
 static irqreturn_t iic_ipi_action(int irq, void *dev_id)
 {
 	int ipi = (int)(long)dev_id;
@@ -217,6 +218,7 @@ void iic_request_IPIs(void)
 {
 	iic_request_ipi(PPC_MSG_CALL_FUNCTION, "IPI-call");
 	iic_request_ipi(PPC_MSG_RESCHEDULE, "IPI-resched");
+	iic_request_ipi(PPC_MSG_CALL_FUNC_SINGLE, "IPI-call-single");
 #ifdef CONFIG_DEBUGGER
 	iic_request_ipi(PPC_MSG_DEBUGGER_BREAK, "IPI-debug");
 #endif /* CONFIG_DEBUGGER */
@@ -231,6 +233,54 @@ 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)
+{
+	const unsigned int cpu = smp_processor_id();
+
+	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_cpu(cpu).irqs[irq]++;
+
+	/* 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;
+		spin_unlock(&desc->lock);
+		action_ret = handle_IRQ_event(irq, action);
+		if (!noirqdebug)
+			note_interrupt(irq, desc, action_ret);
+		spin_lock(&desc->lock);
+
+	} while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
+
+	desc->status &= ~IRQ_INPROGRESS;
+out_eoi:
+	desc->chip->eoi(irq);
+	spin_unlock(&desc->lock);
+}
+
 static int iic_host_map(struct irq_host *h, unsigned int virq,
 			irq_hw_number_t hw)
 {
@@ -240,10 +290,10 @@ static int iic_host_map(struct irq_host *h, unsigned int virq,
 		break;
 	case IIC_IRQ_TYPE_IOEXC:
 		set_irq_chip_and_handler(virq, &iic_ioexc_chip,
-					 handle_fasteoi_irq);
+					 handle_iic_irq);
 		break;
 	default:
-		set_irq_chip_and_handler(virq, &iic_chip, handle_fasteoi_irq);
+		set_irq_chip_and_handler(virq, &iic_chip, handle_iic_irq);
 	}
 	return 0;
 }