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authorPaul Mackerras <paulus@samba.org>2005-11-10 13:08:55 +1100
committerPaul Mackerras <paulus@samba.org>2005-11-10 13:08:55 +1100
commite130bedb7ce718a8eb6b56a3806b96281f618111 (patch)
treeda5676a4291a79b06da6fe2b005e0058ec03cc2c /arch/powerpc/platforms
parent00557b59c69ce284e5a61bcfcdbcc3dc867cb2da (diff)
parent756e7104fefc82e3ebaa5f1da5ba6659c9c1cae5 (diff)
Merge git://oak/home/sfr/kernels/iseries/work
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/iseries/irq.c24
-rw-r--r--arch/powerpc/platforms/powermac/pic.c3
-rw-r--r--arch/powerpc/platforms/pseries/xics.c1
3 files changed, 23 insertions, 5 deletions
diff --git a/arch/powerpc/platforms/iseries/irq.c b/arch/powerpc/platforms/iseries/irq.c
index a06603d84a4..01090e9ce0c 100644
--- a/arch/powerpc/platforms/iseries/irq.c
+++ b/arch/powerpc/platforms/iseries/irq.c
@@ -103,6 +103,9 @@ static void intReceived(struct XmPciLpEvent *eventParm,
struct pt_regs *regsParm)
{
int irq;
+#ifdef CONFIG_IRQSTACKS
+ struct thread_info *curtp, *irqtp;
+#endif
++Pci_Interrupt_Count;
@@ -110,7 +113,20 @@ static void intReceived(struct XmPciLpEvent *eventParm,
case XmPciLpEvent_SlotInterrupt:
irq = eventParm->hvLpEvent.xCorrelationToken;
/* Dispatch the interrupt handlers for this irq */
- ppc_irq_dispatch_handler(regsParm, irq);
+#ifdef CONFIG_IRQSTACKS
+ /* Switch to the irq stack to handle this */
+ curtp = current_thread_info();
+ irqtp = hardirq_ctx[smp_processor_id()];
+ if (curtp != irqtp) {
+ irqtp->task = curtp->task;
+ irqtp->flags = 0;
+ call___do_IRQ(irq, regsParm, irqtp);
+ irqtp->task = NULL;
+ if (irqtp->flags)
+ set_bits(irqtp->flags, &curtp->flags);
+ } else
+#endif
+ __do_IRQ(irq, regsParm);
HvCallPci_eoi(eventParm->eventData.slotInterrupt.busNumber,
eventParm->eventData.slotInterrupt.subBusNumber,
eventParm->eventData.slotInterrupt.deviceId);
@@ -310,10 +326,8 @@ static void iSeries_disable_IRQ(unsigned int irq)
}
/*
- * Need to define this so ppc_irq_dispatch_handler will NOT call
- * enable_IRQ at the end of interrupt handling. However, this does
- * nothing because there is not enough information provided to do
- * the EOI HvCall. This is done by XmPciLpEvent.c
+ * This does nothing because there is not enough information
+ * provided to do the EOI HvCall. This is done by XmPciLpEvent.c
*/
static void iSeries_end_IRQ(unsigned int irq)
{
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 83a49e80ac2..90040c49494 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -74,6 +74,9 @@ static DEFINE_SPINLOCK(pmac_pic_lock);
#define GATWICK_IRQ_POOL_SIZE 10
static struct interrupt_info gatwick_int_pool[GATWICK_IRQ_POOL_SIZE];
+#define NR_MASK_WORDS ((NR_IRQS + 31) / 32)
+static unsigned long ppc_lost_interrupts[NR_MASK_WORDS];
+
/*
* Mark an irq as "lost". This is only used on the pmac
* since it can lose interrupts (see pmac_set_irq_mask).
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index c72c86f05cb..405c4f3229b 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -567,6 +567,7 @@ nextnode:
xics_8259_pic.enable = i8259_pic.enable;
xics_8259_pic.disable = i8259_pic.disable;
+ xics_8259_pic.end = i8259_pic.end;
for (i = 0; i < 16; ++i)
get_irq_desc(i)->handler = &xics_8259_pic;
for (; i < NR_IRQS; ++i)